5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Initial version of POST overhaul. Add POST callback to allow the status
8 of POST to be monitored and/or failures induced. Modify fips_test_suite
9 to use callback. Always run all selftests even if one fails.
12 *) Provisional XTS support. Note: this does increase the maximum key
13 length from 32 to 64 bytes but there should be no binary compatibility
14 issues as existing applications will never use XTS mode.
17 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
18 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
19 performs algorithm blocking for unapproved PRNG types. Also do not
20 set PRNG type in FIPS_mode_set(): leave this to the application.
21 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
22 the standard OpenSSL PRNG: set additional data to a date time vector.
25 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
26 This shouldn't present any incompatibility problems because applications
27 shouldn't be using these directly and any that are will need to rethink
28 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
31 *) Extensive self tests and health checking required by SP800-90 DRBG.
32 Remove strength parameter from FIPS_drbg_instantiate and always
33 instantiate at maximum supported strength.
37 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
39 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
42 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
45 *) New function DH_compute_key_padded() to compute a DH key and pad with
46 leading zeroes if needed: this complies with SP800-56A et al.
49 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
50 anything, incomplete, subject to change and largely untested at present.
53 *) Modify fipscanisteronly build option to only build the necessary object
54 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
57 *) Add experimental option FIPSSYMS to give all symbols in
58 fipscanister.o and FIPS or fips prefix. This will avoid
59 conflicts with future versions of OpenSSL. Add perl script
60 util/fipsas.pl to preprocess assembly language source files
61 and rename any affected symbols.
64 *) Add selftest checks and algorithm block of non-fips algorithms in
65 FIPS mode. Remove DES2 from selftests.
68 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
69 return internal method without any ENGINE dependencies. Add new
70 tiny fips sign and verify functions.
73 *) New build option no-ec2m to disable characteristic 2 code.
76 *) New build option "fipscanisteronly". This only builds fipscanister.o
77 and (currently) associated fips utilities. Uses the file Makefile.fips
78 instead of Makefile.org as the prototype.
81 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
82 Update fips_gcmtest to use IV generator.
85 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
86 setting output buffer to NULL. The *Final function must be
87 called although it will not retrieve any additional data. The tag
88 can be set or retrieved with a ctrl. The IV length is by default 12
89 bytes (96 bits) but can be set to an alternative value. If the IV
90 length exceeds the maximum IV length (currently 16 bytes) it cannot be
94 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
95 underlying do_cipher function handles all cipher semantics itself
96 including padding and finalisation. This is useful if (for example)
97 an ENGINE cipher handles block padding itself. The behaviour of
98 do_cipher is subtly changed if this flag is set: the return value
99 is the number of characters written to the output buffer (zero is
100 no longer an error code) or a negative error code. Also if the
101 input buffer is NULL and length 0 finalisation should be performed.
104 *) If a candidate issuer certificate is already part of the constructed
105 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
108 *) Improve forward-security support: add functions
110 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
111 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
113 for use by SSL/TLS servers; the callback function will be called whenever a
114 new session is created, and gets to decide whether the session may be
115 cached to make it resumable (return 0) or not (return 1). (As by the
116 SSL/TLS protocol specifications, the session_id sent by the server will be
117 empty to indicate that the session is not resumable; also, the server will
118 not generate RFC 4507 (RFC 5077) session tickets.)
120 A simple reasonable callback implementation is to return is_forward_secure.
121 This parameter will be set to 1 or 0 depending on the ciphersuite selected
122 by the SSL/TLS server library, indicating whether it can provide forward
124 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
126 *) Add Next Protocol Negotiation,
127 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
128 disabled with a no-npn flag to config or Configure. Code donated
130 [Adam Langley <agl@google.com> and Ben Laurie]
132 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
133 all platforms. Move ssize_t definition from e_os.h to the public
134 header file e_os2.h as it now appears in public header file cms.h
137 *) New function OPENSSL_gmtime_diff to find the difference in days
138 and seconds between two tm structures. This will be used to provide
139 additional functionality for ASN1_TIME.
142 *) New -sigopt option to the ca, req and x509 utilities. Additional
143 signature parameters can be passed using this option and in
147 *) Add RSA PSS signing function. This will generate and set the
148 appropriate AlgorithmIdentifiers for PSS based on those in the
149 corresponding EVP_MD_CTX structure. No application support yet.
152 *) Support for companion algorithm specific ASN1 signing routines.
153 New function ASN1_item_sign_ctx() signs a pre-initialised
154 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
155 the appropriate parameters.
158 *) Add new algorithm specific ASN1 verification initialisation function
159 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
160 handling will be the same no matter what EVP_PKEY_METHOD is used.
161 Add a PSS handler to support verification of PSS signatures: checked
162 against a number of sample certificates.
165 *) Add signature printing for PSS. Add PSS OIDs.
166 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
168 *) Add algorithm specific signature printing. An individual ASN1 method
169 can now print out signatures instead of the standard hex dump.
171 More complex signatures (e.g. PSS) can print out more meaningful
172 information. Include DSA version that prints out the signature
176 *) Add -trusted_first option which attempts to find certificates in the
177 trusted store even if an untrusted chain is also supplied.
180 *) Initial experimental support for explicitly trusted non-root CAs.
181 OpenSSL still tries to build a complete chain to a root but if an
182 intermediate CA has a trust setting included that is used. The first
183 setting is used: whether to trust or reject.
186 *) New -verify_name option in command line utilities to set verification
190 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
191 Add CMAC pkey methods.
194 *) Experiemental regnegotiation in s_server -www mode. If the client
195 browses /reneg connection is renegotiated. If /renegcert it is
196 renegotiated requesting a certificate.
199 *) Add an "external" session cache for debugging purposes to s_server. This
200 should help trace issues which normally are only apparent in deployed
201 multi-process servers.
204 *) Experiemental password based recipient info support for CMS library:
205 implementing RFC3211.
208 *) Split password based encryption into PBES2 and PBKDF2 functions. This
209 neatly separates the code into cipher and PBE sections and is required
210 for some algorithms that split PBES2 into separate pieces (such as
214 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
215 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
216 BIO_set_cipher() and some obscure PEM functions were changed so they
217 can now return an error. The RAND changes required a change to the
218 RAND_METHOD structure.
221 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
222 a gcc attribute to warn if the result of a function is ignored. This
223 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
224 whose return value is often ignored.
227 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
229 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
232 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
233 elliptic curve NIST-P224 with constant-time single point multiplication on
234 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
235 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
236 flexible implementations).
238 The implementation requires support for the nonstandard type __uint128_t,
239 and so is disabled by default. To include this in your build of OpenSSL,
240 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
241 and run "make depend" (or "make update").
242 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
244 *) Permit abbreviated handshakes when renegotiating using the function
245 SSL_renegotiate_abbreviated().
246 [Robin Seggelmann <seggelmann@fh-muenster.de>]
248 *) Add call to ENGINE_register_all_complete() to
249 ENGINE_load_builtin_engines(), so some implementations get used
250 automatically instead of needing explicit application support.
253 *) Add support for TLS key exporter as described in RFC5705.
254 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
256 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
257 a few changes are required:
259 Add SSL_OP_NO_TLSv1_1 flag.
261 Update version checking logic to handle version 1.1.
262 Add explicit IV handling (ported from DTLS code).
263 Add command line options to s_client/s_server.
266 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
268 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
269 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
271 *) Fix bug in string printing code: if *any* escaping is enabled we must
272 escape the escape character (backslash) or the resulting string is
276 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
278 *) Disable code workaround for ancient and obsolete Netscape browsers
279 and servers: an attacker can use it in a ciphersuite downgrade attack.
280 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
283 *) Fixed J-PAKE implementation error, originally discovered by
284 Sebastien Martini, further info and confirmation from Stefan
285 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
288 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
290 *) Fix extension code to avoid race conditions which can result in a buffer
291 overrun vulnerability: resumed sessions must not be modified as they can
292 be shared by multiple threads. CVE-2010-3864
295 *) Fix WIN32 build system to correctly link an ENGINE directory into
299 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
301 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
303 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
305 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
307 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
308 context. The operation can be customised via the ctrl mechanism in
309 case ENGINEs want to include additional functionality.
312 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
315 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
316 output hashes compatible with older versions of OpenSSL.
317 [Willy Weisz <weisz@vcpc.univie.ac.at>]
319 *) Fix compression algorithm handling: if resuming a session use the
320 compression algorithm of the resumed session instead of determining
321 it from client hello again. Don't allow server to change algorithm.
324 *) Add load_crls() function to apps tidying load_certs() too. Add option
325 to verify utility to allow additional CRLs to be included.
328 *) Update OCSP request code to permit adding custom headers to the request:
329 some responders need this.
332 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
334 [Julia Lawall <julia@diku.dk>]
336 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
337 needlessly dereferenced structures, used obsolete functions and
338 didn't handle all updated verify codes correctly.
341 *) Disable MD2 in the default configuration.
344 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
345 indicate the initial BIO being pushed or popped. This makes it possible
346 to determine whether the BIO is the one explicitly called or as a result
347 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
348 it handles reference counts correctly and doesn't zero out the I/O bio
349 when it is not being explicitly popped. WARNING: applications which
350 included workarounds for the old buggy behaviour will need to be modified
351 or they could free up already freed BIOs.
354 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
355 renaming to all platforms (within the 0.9.8 branch, this was
356 done conditionally on Netware platforms to avoid a name clash).
357 [Guenter <lists@gknw.net>]
359 *) Add ECDHE and PSK support to DTLS.
360 [Michael Tuexen <tuexen@fh-muenster.de>]
362 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
366 *) Add "missing" function EVP_MD_flags() (without this the only way to
367 retrieve a digest flags is by accessing the structure directly. Update
368 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
369 or cipher is registered as in the "from" argument. Print out all
370 registered digests in the dgst usage message instead of manually
371 attempting to work them out.
374 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
375 this allows the use of compression and extensions. Change default cipher
376 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
377 by default unless an application cipher string requests it.
380 *) Alter match criteria in PKCS12_parse(). It used to try to use local
381 key ids to find matching certificates and keys but some PKCS#12 files
382 don't follow the (somewhat unwritten) rules and this strategy fails.
383 Now just gather all certificates together and the first private key
384 then look for the first certificate that matches the key.
387 *) Support use of registered digest and cipher names for dgst and cipher
388 commands instead of having to add each one as a special case. So now
395 openssl dgst -sha256 foo
397 and this works for ENGINE based algorithms too.
401 *) Update Gost ENGINE to support parameter files.
402 [Victor B. Wagner <vitus@cryptocom.ru>]
404 *) Support GeneralizedTime in ca utility.
405 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
407 *) Enhance the hash format used for certificate directory links. The new
408 form uses the canonical encoding (meaning equivalent names will work
409 even if they aren't identical) and uses SHA1 instead of MD5. This form
410 is incompatible with the older format and as a result c_rehash should
411 be used to rebuild symbolic links.
414 *) Make PKCS#8 the default write format for private keys, replacing the
415 traditional format. This form is standardised, more secure and doesn't
416 include an implicit MD5 dependency.
419 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
420 committed to OpenSSL should pass this lot as a minimum.
423 *) Add session ticket override functionality for use by EAP-FAST.
424 [Jouni Malinen <j@w1.fi>]
426 *) Modify HMAC functions to return a value. Since these can be implemented
427 in an ENGINE errors can occur.
430 *) Type-checked OBJ_bsearch_ex.
433 *) Type-checked OBJ_bsearch. Also some constification necessitated
434 by type-checking. Still to come: TXT_DB, bsearch(?),
435 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
439 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
440 seconds to a tm structure directly, instead of going through OS
441 specific date routines. This avoids any issues with OS routines such
442 as the year 2038 bug. New *_adj() functions for ASN1 time structures
443 and X509_time_adj_ex() to cover the extended range. The existing
444 X509_time_adj() is still usable and will no longer have any date issues.
447 *) Delta CRL support. New use deltas option which will attempt to locate
448 and search any appropriate delta CRLs available.
450 This work was sponsored by Google.
453 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
454 code and add additional score elements. Validate alternate CRL paths
455 as part of the CRL checking and indicate a new error "CRL path validation
456 error" in this case. Applications wanting additional details can use
457 the verify callback and check the new "parent" field. If this is not
458 NULL CRL path validation is taking place. Existing applications wont
459 see this because it requires extended CRL support which is off by
462 This work was sponsored by Google.
465 *) Support for freshest CRL extension.
467 This work was sponsored by Google.
470 *) Initial indirect CRL support. Currently only supported in the CRLs
471 passed directly and not via lookup. Process certificate issuer
472 CRL entry extension and lookup CRL entries by bother issuer name
473 and serial number. Check and process CRL issuer entry in IDP extension.
475 This work was sponsored by Google.
478 *) Add support for distinct certificate and CRL paths. The CRL issuer
479 certificate is validated separately in this case. Only enabled if
480 an extended CRL support flag is set: this flag will enable additional
481 CRL functionality in future.
483 This work was sponsored by Google.
486 *) Add support for policy mappings extension.
488 This work was sponsored by Google.
491 *) Fixes to pathlength constraint, self issued certificate handling,
492 policy processing to align with RFC3280 and PKITS tests.
494 This work was sponsored by Google.
497 *) Support for name constraints certificate extension. DN, email, DNS
498 and URI types are currently supported.
500 This work was sponsored by Google.
503 *) To cater for systems that provide a pointer-based thread ID rather
504 than numeric, deprecate the current numeric thread ID mechanism and
505 replace it with a structure and associated callback type. This
506 mechanism allows a numeric "hash" to be extracted from a thread ID in
507 either case, and on platforms where pointers are larger than 'long',
508 mixing is done to help ensure the numeric 'hash' is usable even if it
509 can't be guaranteed unique. The default mechanism is to use "&errno"
510 as a pointer-based thread ID to distinguish between threads.
512 Applications that want to provide their own thread IDs should now use
513 CRYPTO_THREADID_set_callback() to register a callback that will call
514 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
516 Note that ERR_remove_state() is now deprecated, because it is tied
517 to the assumption that thread IDs are numeric. ERR_remove_state(0)
518 to free the current thread's error state should be replaced by
519 ERR_remove_thread_state(NULL).
521 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
522 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
523 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
524 application was previously providing a numeric thread callback that
525 was inappropriate for distinguishing threads, then uniqueness might
526 have been obtained with &errno that happened immediately in the
527 intermediate development versions of OpenSSL; this is no longer the
528 case, the numeric thread callback will now override the automatic use
530 [Geoff Thorpe, with help from Bodo Moeller]
532 *) Initial support for different CRL issuing certificates. This covers a
533 simple case where the self issued certificates in the chain exist and
534 the real CRL issuer is higher in the existing chain.
536 This work was sponsored by Google.
539 *) Removed effectively defunct crypto/store from the build.
542 *) Revamp of STACK to provide stronger type-checking. Still to come:
543 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
544 ASN1_STRING, CONF_VALUE.
547 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
548 RAM on SSL connections. This option can save about 34k per idle SSL.
551 *) Revamp of LHASH to provide stronger type-checking. Still to come:
552 STACK, TXT_DB, bsearch, qsort.
555 *) Initial support for Cryptographic Message Syntax (aka CMS) based
556 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
557 support for data, signedData, compressedData, digestedData and
558 encryptedData, envelopedData types included. Scripts to check against
559 RFC4134 examples draft and interop and consistency checks of many
560 content types and variants.
563 *) Add options to enc utility to support use of zlib compression BIO.
566 *) Extend mk1mf to support importing of options and assembly language
567 files from Configure script, currently only included in VC-WIN32.
568 The assembly language rules can now optionally generate the source
569 files from the associated perl scripts.
572 *) Implement remaining functionality needed to support GOST ciphersuites.
573 Interop testing has been performed using CryptoPro implementations.
574 [Victor B. Wagner <vitus@cryptocom.ru>]
576 *) s390x assembler pack.
579 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
583 *) Implement Opaque PRF Input TLS extension as specified in
584 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
585 official specification yet and no extension type assignment by
586 IANA exists, this extension (for now) will have to be explicitly
587 enabled when building OpenSSL by providing the extension number
588 to use. For example, specify an option
590 -DTLSEXT_TYPE_opaque_prf_input=0x9527
592 to the "config" or "Configure" script to enable the extension,
593 assuming extension number 0x9527 (which is a completely arbitrary
594 and unofficial assignment based on the MD5 hash of the Internet
595 Draft). Note that by doing so, you potentially lose
596 interoperability with other TLS implementations since these might
597 be using the same extension number for other purposes.
599 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
600 opaque PRF input value to use in the handshake. This will create
601 an interal copy of the length-'len' string at 'src', and will
602 return non-zero for success.
604 To get more control and flexibility, provide a callback function
607 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
608 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
612 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
615 Callback function 'cb' will be called in handshakes, and is
616 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
617 Argument 'arg' is for application purposes (the value as given to
618 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
619 be provided to the callback function). The callback function
620 has to return non-zero to report success: usually 1 to use opaque
621 PRF input just if possible, or 2 to enforce use of the opaque PRF
622 input. In the latter case, the library will abort the handshake
623 if opaque PRF input is not successfully negotiated.
625 Arguments 'peerinput' and 'len' given to the callback function
626 will always be NULL and 0 in the case of a client. A server will
627 see the client's opaque PRF input through these variables if
628 available (NULL and 0 otherwise). Note that if the server
629 provides an opaque PRF input, the length must be the same as the
630 length of the client's opaque PRF input.
632 Note that the callback function will only be called when creating
633 a new session (session resumption can resume whatever was
634 previously negotiated), and will not be called in SSL 2.0
635 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
636 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
637 for applications that need to enforce opaque PRF input.
641 *) Update ssl code to support digests other than SHA1+MD5 for handshake
644 [Victor B. Wagner <vitus@cryptocom.ru>]
646 *) Add RFC4507 support to OpenSSL. This includes the corrections in
647 RFC4507bis. The encrypted ticket format is an encrypted encoded
648 SSL_SESSION structure, that way new session features are automatically
651 If a client application caches session in an SSL_SESSION structure
652 support is transparent because tickets are now stored in the encoded
655 The SSL_CTX structure automatically generates keys for ticket
656 protection in servers so again support should be possible
657 with no application modification.
659 If a client or server wishes to disable RFC4507 support then the option
660 SSL_OP_NO_TICKET can be set.
662 Add a TLS extension debugging callback to allow the contents of any client
663 or server extensions to be examined.
665 This work was sponsored by Google.
668 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
669 OpenSSL should now compile cleanly on gcc 4.2
670 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
672 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
673 support including streaming MAC support: this is required for GOST
675 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
677 *) Add option -stream to use PKCS#7 streaming in smime utility. New
678 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
679 to output in BER and PEM format.
682 *) Experimental support for use of HMAC via EVP_PKEY interface. This
683 allows HMAC to be handled via the EVP_DigestSign*() interface. The
684 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
685 ENGINE support for HMAC keys which are unextractable. New -mac and
686 -macopt options to dgst utility.
689 *) New option -sigopt to dgst utility. Update dgst to use
690 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
691 alternative signing paramaters such as X9.31 or PSS in the dgst
695 *) Change ssl_cipher_apply_rule(), the internal function that does
696 the work each time a ciphersuite string requests enabling
697 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
698 removing ("!foo+bar") a class of ciphersuites: Now it maintains
699 the order of disabled ciphersuites such that those ciphersuites
700 that most recently went from enabled to disabled not only stay
701 in order with respect to each other, but also have higher priority
702 than other disabled ciphersuites the next time ciphersuites are
705 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
706 the same ciphersuites as with "HIGH" alone, but in a specific
707 order where the PSK ciphersuites come first (since they are the
708 most recently disabled ciphersuites when "HIGH" is parsed).
710 Also, change ssl_create_cipher_list() (using this new
711 funcionality) such that between otherwise identical
712 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
716 *) Change ssl_create_cipher_list() so that it automatically
717 arranges the ciphersuites in reasonable order before starting
718 to process the rule string. Thus, the definition for "DEFAULT"
719 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
720 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
721 This makes it much easier to arrive at a reasonable default order
722 in applications for which anonymous ciphers are OK (meaning
723 that you can't actually use DEFAULT).
724 [Bodo Moeller; suggested by Victor Duchovni]
726 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
727 processing) into multiple integers instead of setting
728 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
729 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
730 (These masks as well as the individual bit definitions are hidden
731 away into the non-exported interface ssl/ssl_locl.h, so this
732 change to the definition of the SSL_CIPHER structure shouldn't
733 affect applications.) This give us more bits for each of these
734 categories, so there is no longer a need to coagulate AES128 and
735 AES256 into a single algorithm bit, and to coagulate Camellia128
736 and Camellia256 into a single algorithm bit, which has led to all
739 Thus, among other things, the kludge introduced in 0.9.7m and
740 0.9.8e for masking out AES256 independently of AES128 or masking
741 out Camellia256 independently of AES256 is not needed here in 0.9.9.
743 With the change, we also introduce new ciphersuite aliases that
744 so far were missing: "AES128", "AES256", "CAMELLIA128", and
748 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
749 Use the leftmost N bytes of the signature input if the input is
750 larger than the prime q (with N being the size in bytes of q).
753 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
754 it yet and it is largely untested.
757 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
760 *) Initial incomplete changes to avoid need for function casts in OpenSSL
761 some compilers (gcc 4.2 and later) reject their use. Safestack is
762 reimplemented. Update ASN1 to avoid use of legacy functions.
765 *) Win32/64 targets are linked with Winsock2.
768 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
769 to external functions. This can be used to increase CRL handling
770 efficiency especially when CRLs are very large by (for example) storing
771 the CRL revoked certificates in a database.
774 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
775 new CRLs added to a directory can be used. New command line option
776 -verify_return_error to s_client and s_server. This causes real errors
777 to be returned by the verify callback instead of carrying on no matter
778 what. This reflects the way a "real world" verify callback would behave.
781 *) GOST engine, supporting several GOST algorithms and public key formats.
782 Kindly donated by Cryptocom.
785 *) Partial support for Issuing Distribution Point CRL extension. CRLs
786 partitioned by DP are handled but no indirect CRL or reason partitioning
787 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
788 selected via a scoring technique which handles IDP and AKID in CRLs.
791 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
792 will ultimately be used for all verify operations: this will remove the
793 X509_STORE dependency on certificate verification and allow alternative
794 lookup methods. X509_STORE based implementations of these two callbacks.
797 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
798 Modify get_crl() to find a valid (unexpired) CRL if possible.
801 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
802 this would be called X509_CRL_cmp() but that name is already used by
803 a function that just compares CRL issuer names. Cache several CRL
804 extensions in X509_CRL structure and cache CRLDP in X509.
807 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
808 this maps equivalent X509_NAME structures into a consistent structure.
809 Name comparison can then be performed rapidly using memcmp().
812 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
816 *) Allow digests to supply their own micalg string for S/MIME type using
817 the ctrl EVP_MD_CTRL_MICALG.
820 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
821 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
822 ctrl. It can then customise the structure before and/or after signing
826 *) New function OBJ_add_sigid() to allow application defined signature OIDs
827 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
828 to free up any added signature OIDs.
831 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
832 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
833 digest and cipher tables. New options added to openssl utility:
834 list-message-digest-algorithms and list-cipher-algorithms.
837 *) Change the array representation of binary polynomials: the list
838 of degrees of non-zero coefficients is now terminated with -1.
839 Previously it was terminated with 0, which was also part of the
840 value; thus, the array representation was not applicable to
841 polynomials where t^0 has coefficient zero. This change makes
842 the array representation useful in a more general context.
845 *) Various modifications and fixes to SSL/TLS cipher string
846 handling. For ECC, the code now distinguishes between fixed ECDH
847 with RSA certificates on the one hand and with ECDSA certificates
848 on the other hand, since these are separate ciphersuites. The
849 unused code for Fortezza ciphersuites has been removed.
851 For consistency with EDH, ephemeral ECDH is now called "EECDH"
852 (not "ECDHE"). For consistency with the code for DH
853 certificates, use of ECDH certificates is now considered ECDH
854 authentication, not RSA or ECDSA authentication (the latter is
855 merely the CA's signing algorithm and not actively used in the
858 The temporary ciphersuite alias "ECCdraft" is no longer
859 available, and ECC ciphersuites are no longer excluded from "ALL"
860 and "DEFAULT". The following aliases now exist for RFC 4492
861 ciphersuites, most of these by analogy with the DH case:
863 kECDHr - ECDH cert, signed with RSA
864 kECDHe - ECDH cert, signed with ECDSA
865 kECDH - ECDH cert (signed with either RSA or ECDSA)
866 kEECDH - ephemeral ECDH
867 ECDH - ECDH cert or ephemeral ECDH
873 AECDH - anonymous ECDH
874 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
878 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
879 Use correct micalg parameters depending on digest(s) in signed message.
882 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
883 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
886 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
887 an engine to register a method. Add ENGINE lookups for methods and
888 functional reference processing.
891 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
892 EVP_{Sign,Verify}* which allow an application to customise the signature
896 *) New -resign option to smime utility. This adds one or more signers
897 to an existing PKCS#7 signedData structure. Also -md option to use an
898 alternative message digest algorithm for signing.
901 *) Tidy up PKCS#7 routines and add new functions to make it easier to
902 create PKCS7 structures containing multiple signers. Update smime
903 application to support multiple signers.
906 *) New -macalg option to pkcs12 utility to allow setting of an alternative
910 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
911 Reorganize PBE internals to lookup from a static table using NIDs,
912 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
913 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
914 PRF which will be automatically used with PBES2.
917 *) Replace the algorithm specific calls to generate keys in "req" with the
921 *) Update PKCS#7 enveloped data routines to use new API. This is now
922 supported by any public key method supporting the encrypt operation. A
923 ctrl is added to allow the public key algorithm to examine or modify
924 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
928 *) Add a ctrl to asn1 method to allow a public key algorithm to express
929 a default digest type to use. In most cases this will be SHA1 but some
930 algorithms (such as GOST) need to specify an alternative digest. The
931 return value indicates how strong the prefernce is 1 means optional and
932 2 is mandatory (that is it is the only supported type). Modify
933 ASN1_item_sign() to accept a NULL digest argument to indicate it should
934 use the default md. Update openssl utilities to use the default digest
935 type for signing if it is not explicitly indicated.
938 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
939 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
940 signing method from the key type. This effectively removes the link
941 between digests and public key types.
944 *) Add an OID cross reference table and utility functions. Its purpose is to
945 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
946 rsaEncryption. This will allow some of the algorithm specific hackery
947 needed to use the correct OID to be removed.
950 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
951 structures for PKCS7_sign(). They are now set up by the relevant public
955 *) Add provisional EC pkey method with support for ECDSA and ECDH.
958 *) Add support for key derivation (agreement) in the API, DH method and
962 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
963 public and private key formats. As a side effect these add additional
964 command line functionality not previously available: DSA signatures can be
965 generated and verified using pkeyutl and DH key support and generation in
970 [Oliver Tappe <zooey@hirschkaefer.de>]
972 *) New make target "install_html_docs" installs HTML renditions of the
974 [Oliver Tappe <zooey@hirschkaefer.de>]
976 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
977 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
978 support key and parameter generation and add initial key generation
979 functionality for RSA.
982 *) Add functions for main EVP_PKEY_method operations. The undocumented
983 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
984 EVP_PKEY_{encrypt,decrypt}_old.
987 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
988 key API, doesn't do much yet.
991 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
992 public key algorithms. New option to openssl utility:
993 "list-public-key-algorithms" to print out info.
996 *) Implement the Supported Elliptic Curves Extension for
997 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1000 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1001 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1004 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1005 utilities such as rsa, dsa, dsaparam etc except they process any key
1009 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1010 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1011 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1015 *) Initial support for pluggable public key ASN1.
1016 De-spaghettify the public key ASN1 handling. Move public and private
1017 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1018 algorithm specific handling to a single module within the relevant
1019 algorithm directory. Add functions to allow (near) opaque processing
1020 of public and private key structures.
1023 *) Implement the Supported Point Formats Extension for
1024 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1027 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1028 for the psk identity [hint] and the psk callback functions to the
1029 SSL_SESSION, SSL and SSL_CTX structure.
1032 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1036 SSL_CTX_use_psk_identity_hint
1037 SSL_get_psk_identity_hint
1038 SSL_get_psk_identity
1039 SSL_use_psk_identity_hint
1041 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1043 *) Add RFC 3161 compliant time stamp request creation, response generation
1044 and response verification functionality.
1045 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1047 *) Add initial support for TLS extensions, specifically for the server_name
1048 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1049 have new members for a host name. The SSL data structure has an
1050 additional member SSL_CTX *initial_ctx so that new sessions can be
1051 stored in that context to allow for session resumption, even after the
1052 SSL has been switched to a new SSL_CTX in reaction to a client's
1053 server_name extension.
1055 New functions (subject to change):
1057 SSL_get_servername()
1058 SSL_get_servername_type()
1061 New CTRL codes and macros (subject to change):
1063 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1064 - SSL_CTX_set_tlsext_servername_callback()
1065 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1066 - SSL_CTX_set_tlsext_servername_arg()
1067 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1069 openssl s_client has a new '-servername ...' option.
1071 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1072 '-key2 ...', '-servername_fatal' (subject to change). This allows
1073 testing the HostName extension for a specific single host name ('-cert'
1074 and '-key' remain fallbacks for handshakes without HostName
1075 negotiation). If the unrecogninzed_name alert has to be sent, this by
1076 default is a warning; it becomes fatal with the '-servername_fatal'
1079 [Peter Sylvester, Remy Allais, Christophe Renou]
1081 *) Whirlpool hash implementation is added.
1084 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1085 bn(64,32). Because of instruction set limitations it doesn't have
1086 any negative impact on performance. This was done mostly in order
1087 to make it possible to share assembler modules, such as bn_mul_mont
1088 implementations, between 32- and 64-bit builds without hassle.
1091 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1092 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1096 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1097 dedicated Montgomery multiplication procedure, is introduced.
1098 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1099 "64-bit" performance on certain 32-bit targets.
1102 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1103 in SSL structures. New SSL ctrl to set maximum send fragment size.
1104 Save memory by seeting the I/O buffer sizes dynamically instead of
1105 using the maximum available value.
1108 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1109 in addition to the text details.
1112 *) Very, very preliminary EXPERIMENTAL support for printing of general
1113 ASN1 structures. This currently produces rather ugly output and doesn't
1114 handle several customised structures at all.
1117 *) Integrated support for PVK file format and some related formats such
1118 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1119 these in the 'rsa' and 'dsa' utilities.
1122 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1125 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1126 place for the (very old) "NETSCAPE" format certificates which are now
1127 handled using new ASN1 code equivalents.
1130 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1131 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1132 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1135 *) Modify CRL distribution points extension code to print out previously
1136 unsupported fields. Enhance extension setting code to allow setting of
1140 *) Add print and set support for Issuing Distribution Point CRL extension.
1143 *) Change 'Configure' script to enable Camellia by default.
1146 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1148 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1149 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1151 *) Fix bug in string printing code: if *any* escaping is enabled we must
1152 escape the escape character (backslash) or the resulting string is
1156 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1158 *) Disable code workaround for ancient and obsolete Netscape browsers
1159 and servers: an attacker can use it in a ciphersuite downgrade attack.
1160 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1163 *) Fixed J-PAKE implementation error, originally discovered by
1164 Sebastien Martini, further info and confirmation from Stefan
1165 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1168 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1170 *) Fix extension code to avoid race conditions which can result in a buffer
1171 overrun vulnerability: resumed sessions must not be modified as they can
1172 be shared by multiple threads. CVE-2010-3864
1175 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1178 *) Don't reencode certificate when calculating signature: cache and use
1179 the original encoding instead. This makes signature verification of
1180 some broken encodings work correctly.
1183 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1184 is also one of the inputs.
1185 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1187 *) Don't repeatedly append PBE algorithms to table if they already exist.
1188 Sort table on each new add. This effectively makes the table read only
1189 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1193 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1195 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1198 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1199 access or freeing data twice (CVE-2010-0742)
1200 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1202 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1203 common in certificates and some applications which only call
1204 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1208 Reduce copying into .apps and .test in makevms.com
1209 Don't try to use blank CA certificate in CA.com
1210 Allow use of C files from original directories in maketests.com
1211 [Steven M. Schweda" <sms@antinode.info>]
1213 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1215 *) When rejecting SSL/TLS records due to an incorrect version number, never
1216 update s->server with a new major version number. As of
1217 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1218 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1219 the previous behavior could result in a read attempt at NULL when
1220 receiving specific incorrect SSL/TLS records once record payload
1221 protection is active. (CVE-2010-0740)
1222 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1224 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1225 could be crashed if the relevant tables were not present (e.g. chrooted).
1226 [Tomas Hoger <thoger@redhat.com>]
1228 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1230 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1231 [Martin Olsson, Neel Mehta]
1233 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1234 accommodate for stack sorting, always a write lock!).
1237 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1238 excessive delays in the RAND_poll(): over a minute. As a workaround
1239 include a time check in the inner Heap32Next loop too.
1242 *) The code that handled flushing of data in SSL/TLS originally used the
1243 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1244 the problem outlined in PR#1949. The fix suggested there however can
1245 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1246 of Apache). So instead simplify the code to flush unconditionally.
1247 This should be fine since flushing with no data to flush is a no op.
1250 *) Handle TLS versions 2.0 and later properly and correctly use the
1251 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1252 off ancient servers have a habit of sticking around for a while...
1255 *) Modify compression code so it frees up structures without using the
1256 ex_data callbacks. This works around a problem where some applications
1257 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1258 restarting) then use compression (e.g. SSL with compression) later.
1259 This results in significant per-connection memory leaks and
1260 has caused some security issues including CVE-2008-1678 and
1264 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1265 change when encrypting or decrypting.
1268 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1269 connect and renegotiate with servers which do not support RI.
1270 Until RI is more widely deployed this option is enabled by default.
1273 *) Add "missing" ssl ctrls to clear options and mode.
1276 *) If client attempts to renegotiate and doesn't support RI respond with
1277 a no_renegotiation alert as required by RFC5746. Some renegotiating
1278 TLS clients will continue a connection gracefully when they receive
1279 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1280 waiting for a server hello which it will never receive. Now we treat a
1281 received no_renegotiation alert as a fatal error. This is because
1282 applications requesting a renegotiation might well expect it to succeed
1283 and would have no code in place to handle the server denying it so the
1284 only safe thing to do is to terminate the connection.
1287 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1288 peer supports secure renegotiation and 0 otherwise. Print out peer
1289 renegotiation support in s_client/s_server.
1292 *) Replace the highly broken and deprecated SPKAC certification method with
1293 the updated NID creation version. This should correctly handle UTF8.
1296 *) Implement RFC5746. Re-enable renegotiation but require the extension
1297 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1298 turns out to be a bad idea. It has been replaced by
1299 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1300 SSL_CTX_set_options(). This is really not recommended unless you
1301 know what you are doing.
1302 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1304 *) Fixes to stateless session resumption handling. Use initial_ctx when
1305 issuing and attempting to decrypt tickets in case it has changed during
1306 servername handling. Use a non-zero length session ID when attempting
1307 stateless session resumption: this makes it possible to determine if
1308 a resumption has occurred immediately after receiving server hello
1309 (several places in OpenSSL subtly assume this) instead of later in
1313 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1314 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1315 fixes for a few places where the return code is not checked
1317 [Julia Lawall <julia@diku.dk>]
1319 *) Add --strict-warnings option to Configure script to include devteam
1320 warnings in other configurations.
1323 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1324 makes it possible to install openssl libraries in locations which
1325 have names other than "lib", for example "/usr/lib64" which some
1327 [Steve Henson, based on patch from Jeremy Utley]
1329 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1330 X690 8.9.12 and can produce some misleading textual output of OIDs.
1331 [Steve Henson, reported by Dan Kaminsky]
1333 *) Delete MD2 from algorithm tables. This follows the recommendation in
1334 several standards that it is not used in new applications due to
1335 several cryptographic weaknesses. For binary compatibility reasons
1336 the MD2 API is still compiled in by default.
1339 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1343 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1344 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1346 [Guenter <lists@gknw.net>]
1348 *) Fix the server certificate chain building code to use X509_verify_cert(),
1349 it used to have an ad-hoc builder which was unable to cope with anything
1350 other than a simple chain.
1351 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1353 *) Don't check self signed certificate signatures in X509_verify_cert()
1354 by default (a flag can override this): it just wastes time without
1355 adding any security. As a useful side effect self signed root CAs
1356 with non-FIPS digests are now usable in FIPS mode.
1359 *) In dtls1_process_out_of_seq_message() the check if the current message
1360 is already buffered was missing. For every new message was memory
1361 allocated, allowing an attacker to perform an denial of service attack
1362 with sending out of seq handshake messages until there is no memory
1363 left. Additionally every future messege was buffered, even if the
1364 sequence number made no sense and would be part of another handshake.
1365 So only messages with sequence numbers less than 10 in advance will be
1366 buffered. (CVE-2009-1378)
1367 [Robin Seggelmann, discovered by Daniel Mentz]
1369 *) Records are buffered if they arrive with a future epoch to be
1370 processed after finishing the corresponding handshake. There is
1371 currently no limitation to this buffer allowing an attacker to perform
1372 a DOS attack with sending records with future epochs until there is no
1373 memory left. This patch adds the pqueue_size() function to detemine
1374 the size of a buffer and limits the record buffer to 100 entries.
1376 [Robin Seggelmann, discovered by Daniel Mentz]
1378 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1379 parent structure is freed. (CVE-2009-1379)
1382 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1383 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1386 [Ilya O. <vrghost@gmail.com>]
1388 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1390 *) Disable renegotiation completely - this fixes a severe security
1391 problem (CVE-2009-3555) at the cost of breaking all
1392 renegotiation. Renegotiation can be re-enabled by setting
1393 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1394 run-time. This is really not recommended unless you know what
1398 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1400 *) Don't set val to NULL when freeing up structures, it is freed up by
1401 underlying code. If sizeof(void *) > sizeof(long) this can result in
1402 zeroing past the valid field. (CVE-2009-0789)
1403 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1405 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1406 checked correctly. This would allow some invalid signed attributes to
1407 appear to verify correctly. (CVE-2009-0591)
1408 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1410 *) Reject UniversalString and BMPString types with invalid lengths. This
1411 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1412 a legal length. (CVE-2009-0590)
1415 *) Set S/MIME signing as the default purpose rather than setting it
1416 unconditionally. This allows applications to override it at the store
1420 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1421 to handle some structures.
1424 *) Improve efficiency of mem_gets: don't search whole buffer each time
1426 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1428 *) New -hex option for openssl rand.
1431 *) Print out UTF8String and NumericString when parsing ASN1.
1434 *) Support NumericString type for name components.
1437 *) Allow CC in the environment to override the automatically chosen
1438 compiler. Note that nothing is done to ensure flags work with the
1442 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1444 *) Properly check EVP_VerifyFinal() and similar return values
1446 [Ben Laurie, Bodo Moeller, Google Security Team]
1448 *) Enable TLS extensions by default.
1451 *) Allow the CHIL engine to be loaded, whether the application is
1452 multithreaded or not. (This does not release the developer from the
1453 obligation to set up the dynamic locking callbacks.)
1454 [Sander Temme <sander@temme.net>]
1456 *) Use correct exit code if there is an error in dgst command.
1457 [Steve Henson; problem pointed out by Roland Dirlewanger]
1459 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1460 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1463 *) Add experimental JPAKE support, including demo authentication in
1464 s_client and s_server.
1467 *) Set the comparison function in v3_addr_canonize().
1468 [Rob Austein <sra@hactrn.net>]
1470 *) Add support for XMPP STARTTLS in s_client.
1471 [Philip Paeps <philip@freebsd.org>]
1473 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1474 to ensure that even with this option, only ciphersuites in the
1475 server's preference list will be accepted. (Note that the option
1476 applies only when resuming a session, so the earlier behavior was
1477 just about the algorithm choice for symmetric cryptography.)
1480 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1482 *) Fix NULL pointer dereference if a DTLS server received
1483 ChangeCipherSpec as first record (CVE-2009-1386).
1486 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1487 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1490 *) The fix in 0.9.8c that supposedly got rid of unsafe
1491 double-checked locking was incomplete for RSA blinding,
1492 addressing just one layer of what turns out to have been
1493 doubly unsafe triple-checked locking.
1495 So now fix this for real by retiring the MONT_HELPER macro
1496 in crypto/rsa/rsa_eay.c.
1498 [Bodo Moeller; problem pointed out by Marius Schilder]
1500 *) Various precautionary measures:
1502 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1504 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1505 (NB: This would require knowledge of the secret session ticket key
1506 to exploit, in which case you'd be SOL either way.)
1508 - Change bn_nist.c so that it will properly handle input BIGNUMs
1509 outside the expected range.
1511 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1514 [Neel Mehta, Bodo Moeller]
1516 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1517 the load fails. Useful for distros.
1518 [Ben Laurie and the FreeBSD team]
1520 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1523 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1526 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1528 This work was sponsored by Logica.
1531 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1532 keystores. Support for SSL/TLS client authentication too.
1533 Not compiled unless enable-capieng specified to Configure.
1535 This work was sponsored by Logica.
1538 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1539 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1540 attribute creation routines such as certifcate requests and PKCS#12
1544 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1546 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1547 handshake which could lead to a cilent crash as found using the
1548 Codenomicon TLS test suite (CVE-2008-1672)
1549 [Steve Henson, Mark Cox]
1551 *) Fix double free in TLS server name extensions which could lead to
1552 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1555 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1557 Clear the error queue to ensure that error entries left from
1558 older function calls do not interfere with the correct operation.
1559 [Lutz Jaenicke, Erik de Castro Lopo]
1561 *) Remove root CA certificates of commercial CAs:
1563 The OpenSSL project does not recommend any specific CA and does not
1564 have any policy with respect to including or excluding any CA.
1565 Therefore it does not make any sense to ship an arbitrary selection
1566 of root CA certificates with the OpenSSL software.
1569 *) RSA OAEP patches to fix two separate invalid memory reads.
1570 The first one involves inputs when 'lzero' is greater than
1571 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1572 before the beginning of from). The second one involves inputs where
1573 the 'db' section contains nothing but zeroes (there is a one-byte
1574 invalid read after the end of 'db').
1575 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1577 *) Partial backport from 0.9.9-dev:
1579 Introduce bn_mul_mont (dedicated Montgomery multiplication
1580 procedure) as a candidate for BIGNUM assembler implementation.
1581 While 0.9.9-dev uses assembler for various architectures, only
1582 x86_64 is available by default here in the 0.9.8 branch, and
1583 32-bit x86 is available through a compile-time setting.
1585 To try the 32-bit x86 assembler implementation, use Configure
1586 option "enable-montasm" (which exists only for this backport).
1588 As "enable-montasm" for 32-bit x86 disclaims code stability
1589 anyway, in this constellation we activate additional code
1590 backported from 0.9.9-dev for further performance improvements,
1591 namely BN_from_montgomery_word. (To enable this otherwise,
1592 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1594 [Andy Polyakov (backport partially by Bodo Moeller)]
1596 *) Add TLS session ticket callback. This allows an application to set
1597 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1598 values. This is useful for key rollover for example where several key
1599 sets may exist with different names.
1602 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1603 This was broken until now in 0.9.8 releases, such that the only way
1604 a registered ENGINE could be used (assuming it initialises
1605 successfully on the host) was to explicitly set it as the default
1606 for the relevant algorithms. This is in contradiction with 0.9.7
1607 behaviour and the documentation. With this fix, when an ENGINE is
1608 registered into a given algorithm's table of implementations, the
1609 'uptodate' flag is reset so that auto-discovery will be used next
1610 time a new context for that algorithm attempts to select an
1612 [Ian Lister (tweaked by Geoff Thorpe)]
1614 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1615 implemention in the following ways:
1617 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1620 Lack of BER streaming support means one pass streaming processing is
1621 only supported if data is detached: setting the streaming flag is
1622 ignored for embedded content.
1624 CMS support is disabled by default and must be explicitly enabled
1625 with the enable-cms configuration option.
1628 *) Update the GMP engine glue to do direct copies between BIGNUM and
1629 mpz_t when openssl and GMP use the same limb size. Otherwise the
1630 existing "conversion via a text string export" trick is still used.
1631 [Paul Sheer <paulsheer@gmail.com>]
1633 *) Zlib compression BIO. This is a filter BIO which compressed and
1634 uncompresses any data passed through it.
1637 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1638 RFC3394 compatible AES key wrapping.
1641 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1642 sets string data without copying. X509_ALGOR_set0() and
1643 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1644 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1645 from an X509_ATTRIBUTE structure optionally checking it occurs only
1646 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1650 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1651 to get the expected BN_FLG_CONSTTIME behavior.
1652 [Bodo Moeller (Google)]
1656 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1657 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1658 - added some more tests to do_tests.pl
1659 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1660 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1661 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1662 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1663 - various changes to netware.pl to enable gcc-cross builds on Win32
1665 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1666 - various changes to fix missing prototype warnings
1667 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1668 - added AES, WHIRLPOOL and CPUID assembler code to build files
1669 - added missing AES assembler make rules to mk1mf.pl
1670 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1671 [Guenter Knauf <eflash@gmx.net>]
1673 *) Implement certificate status request TLS extension defined in RFC3546.
1674 A client can set the appropriate parameters and receive the encoded
1675 OCSP response via a callback. A server can query the supplied parameters
1676 and set the encoded OCSP response in the callback. Add simplified examples
1677 to s_client and s_server.
1680 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1682 *) Fix various bugs:
1683 + Binary incompatibility of ssl_ctx_st structure
1684 + DTLS interoperation with non-compliant servers
1685 + Don't call get_session_cb() without proposed session
1686 + Fix ia64 assembler code
1687 [Andy Polyakov, Steve Henson]
1689 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1691 *) DTLS Handshake overhaul. There were longstanding issues with
1692 OpenSSL DTLS implementation, which were making it impossible for
1693 RFC 4347 compliant client to communicate with OpenSSL server.
1694 Unfortunately just fixing these incompatibilities would "cut off"
1695 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1696 server keeps tolerating non RFC compliant syntax. The opposite is
1697 not true, 0.9.8f client can not communicate with earlier server.
1698 This update even addresses CVE-2007-4995.
1701 *) Changes to avoid need for function casts in OpenSSL: some compilers
1702 (gcc 4.2 and later) reject their use.
1703 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1706 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1707 RFC4507bis. The encrypted ticket format is an encrypted encoded
1708 SSL_SESSION structure, that way new session features are automatically
1711 If a client application caches session in an SSL_SESSION structure
1712 support is transparent because tickets are now stored in the encoded
1715 The SSL_CTX structure automatically generates keys for ticket
1716 protection in servers so again support should be possible
1717 with no application modification.
1719 If a client or server wishes to disable RFC4507 support then the option
1720 SSL_OP_NO_TICKET can be set.
1722 Add a TLS extension debugging callback to allow the contents of any client
1723 or server extensions to be examined.
1725 This work was sponsored by Google.
1728 *) Add initial support for TLS extensions, specifically for the server_name
1729 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1730 have new members for a host name. The SSL data structure has an
1731 additional member SSL_CTX *initial_ctx so that new sessions can be
1732 stored in that context to allow for session resumption, even after the
1733 SSL has been switched to a new SSL_CTX in reaction to a client's
1734 server_name extension.
1736 New functions (subject to change):
1738 SSL_get_servername()
1739 SSL_get_servername_type()
1742 New CTRL codes and macros (subject to change):
1744 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1745 - SSL_CTX_set_tlsext_servername_callback()
1746 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1747 - SSL_CTX_set_tlsext_servername_arg()
1748 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1750 openssl s_client has a new '-servername ...' option.
1752 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1753 '-key2 ...', '-servername_fatal' (subject to change). This allows
1754 testing the HostName extension for a specific single host name ('-cert'
1755 and '-key' remain fallbacks for handshakes without HostName
1756 negotiation). If the unrecogninzed_name alert has to be sent, this by
1757 default is a warning; it becomes fatal with the '-servername_fatal'
1760 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1762 *) Add AES and SSE2 assembly language support to VC++ build.
1765 *) Mitigate attack on final subtraction in Montgomery reduction.
1768 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1769 (which previously caused an internal error).
1772 *) Squeeze another 10% out of IGE mode when in != out.
1775 *) AES IGE mode speedup.
1776 [Dean Gaudet (Google)]
1778 *) Add the Korean symmetric 128-bit cipher SEED (see
1779 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1780 add SEED ciphersuites from RFC 4162:
1782 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1783 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1784 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1785 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1787 To minimize changes between patchlevels in the OpenSSL 0.9.8
1788 series, SEED remains excluded from compilation unless OpenSSL
1789 is configured with 'enable-seed'.
1790 [KISA, Bodo Moeller]
1792 *) Mitigate branch prediction attacks, which can be practical if a
1793 single processor is shared, allowing a spy process to extract
1794 information. For detailed background information, see
1795 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1796 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1797 and Necessary Software Countermeasures"). The core of the change
1798 are new versions BN_div_no_branch() and
1799 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1800 respectively, which are slower, but avoid the security-relevant
1801 conditional branches. These are automatically called by BN_div()
1802 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1803 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1804 remove a conditional branch.
1806 BN_FLG_CONSTTIME is the new name for the previous
1807 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1808 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1809 in the exponent causes BN_mod_exp_mont() to use the alternative
1810 implementation in BN_mod_exp_mont_consttime().) The old name
1811 remains as a deprecated alias.
1813 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1814 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1815 constant-time implementations for more than just exponentiation.
1816 Here too the old name is kept as a deprecated alias.
1818 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1819 the BN_BLINDING structure gets an independent copy of the
1820 modulus. This means that the previous "BIGNUM *m" argument to
1821 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1822 essentially becomes "const BIGNUM *m", although we can't actually
1823 change this in the header file before 0.9.9. It allows
1824 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1825 enable BN_FLG_CONSTTIME.
1827 [Matthew D Wood (Intel Corp)]
1829 *) In the SSL/TLS server implementation, be strict about session ID
1830 context matching (which matters if an application uses a single
1831 external cache for different purposes). Previously,
1832 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1833 set. This did ensure strict client verification, but meant that,
1834 with applications using a single external cache for quite
1835 different requirements, clients could circumvent ciphersuite
1836 restrictions for a given session ID context by starting a session
1837 in a different context.
1840 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1841 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1842 authentication-only ciphersuites.
1845 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1846 not complete and could lead to a possible single byte overflow
1847 (CVE-2007-5135) [Ben Laurie]
1849 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1851 *) Since AES128 and AES256 (and similarly Camellia128 and
1852 Camellia256) share a single mask bit in the logic of
1853 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1854 kludge to work properly if AES128 is available and AES256 isn't
1855 (or if Camellia128 is available and Camellia256 isn't).
1858 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1859 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1860 When a point or a seed is encoded in a BIT STRING, we need to
1861 prevent the removal of trailing zero bits to get the proper DER
1862 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1863 of a NamedBitList, for which trailing 0 bits need to be removed.)
1866 *) Have SSL/TLS server implementation tolerate "mismatched" record
1867 protocol version while receiving ClientHello even if the
1868 ClientHello is fragmented. (The server can't insist on the
1869 particular protocol version it has chosen before the ServerHello
1870 message has informed the client about his choice.)
1873 *) Add RFC 3779 support.
1874 [Rob Austein for ARIN, Ben Laurie]
1876 *) Load error codes if they are not already present instead of using a
1877 static variable. This allows them to be cleanly unloaded and reloaded.
1878 Improve header file function name parsing.
1881 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1882 or CAPABILITY handshake as required by RFCs.
1885 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1887 *) Introduce limits to prevent malicious keys being able to
1888 cause a denial of service. (CVE-2006-2940)
1889 [Steve Henson, Bodo Moeller]
1891 *) Fix ASN.1 parsing of certain invalid structures that can result
1892 in a denial of service. (CVE-2006-2937) [Steve Henson]
1894 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1895 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1897 *) Fix SSL client code which could crash if connecting to a
1898 malicious SSLv2 server. (CVE-2006-4343)
1899 [Tavis Ormandy and Will Drewry, Google Security Team]
1901 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1902 match only those. Before that, "AES256-SHA" would be interpreted
1903 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1904 the same strength classification in 0.9.7h) as we currently only
1905 have a single AES bit in the ciphersuite description bitmap.
1906 That change, however, also applied to ciphersuite strings such as
1907 "RC4-MD5" that intentionally matched multiple ciphersuites --
1908 namely, SSL 2.0 ciphersuites in addition to the more common ones
1909 from SSL 3.0/TLS 1.0.
1911 So we change the selection algorithm again: Naming an explicit
1912 ciphersuite selects this one ciphersuite, and any other similar
1913 ciphersuite (same bitmap) from *other* protocol versions.
1914 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1915 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1917 Since SSL 2.0 does not have any ciphersuites for which the
1918 128/256 bit distinction would be relevant, this works for now.
1919 The proper fix will be to use different bits for AES128 and
1920 AES256, which would have avoided the problems from the beginning;
1921 however, bits are scarce, so we can only do this in a new release
1922 (not just a patchlevel) when we can change the SSL_CIPHER
1923 definition to split the single 'unsigned long mask' bitmap into
1924 multiple values to extend the available space.
1928 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1930 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1931 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1933 *) Add AES IGE and biIGE modes.
1936 *) Change the Unix randomness entropy gathering to use poll() when
1937 possible instead of select(), since the latter has some
1938 undesirable limitations.
1939 [Darryl Miles via Richard Levitte and Bodo Moeller]
1941 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1942 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1943 cannot be implicitly activated as part of, e.g., the "AES" alias.
1944 However, please upgrade to OpenSSL 0.9.9[-dev] for
1945 non-experimental use of the ECC ciphersuites to get TLS extension
1946 support, which is required for curve and point format negotiation
1947 to avoid potential handshake problems.
1950 *) Disable rogue ciphersuites:
1952 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1953 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1954 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1956 The latter two were purportedly from
1957 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1960 Also deactivate the remaining ciphersuites from
1961 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1962 unofficial, and the ID has long expired.
1965 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1966 dual-core machines) and other potential thread-safety issues.
1969 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1970 versions), which is now available for royalty-free use
1971 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1972 Also, add Camellia TLS ciphersuites from RFC 4132.
1974 To minimize changes between patchlevels in the OpenSSL 0.9.8
1975 series, Camellia remains excluded from compilation unless OpenSSL
1976 is configured with 'enable-camellia'.
1979 *) Disable the padding bug check when compression is in use. The padding
1980 bug check assumes the first packet is of even length, this is not
1981 necessarily true if compresssion is enabled and can result in false
1982 positives causing handshake failure. The actual bug test is ancient
1983 code so it is hoped that implementations will either have fixed it by
1984 now or any which still have the bug do not support compression.
1987 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1989 *) When applying a cipher rule check to see if string match is an explicit
1990 cipher suite and only match that one cipher suite if it is.
1993 *) Link in manifests for VC++ if needed.
1994 [Austin Ziegler <halostatue@gmail.com>]
1996 *) Update support for ECC-based TLS ciphersuites according to
1997 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1998 TLS extensions, which are supported starting with the 0.9.9
1999 branch, not in the OpenSSL 0.9.8 branch).
2002 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2003 opaque EVP_CIPHER_CTX handling.
2006 *) Fixes and enhancements to zlib compression code. We now only use
2007 "zlib1.dll" and use the default __cdecl calling convention on Win32
2008 to conform with the standards mentioned here:
2009 http://www.zlib.net/DLL_FAQ.txt
2010 Static zlib linking now works on Windows and the new --with-zlib-include
2011 --with-zlib-lib options to Configure can be used to supply the location
2012 of the headers and library. Gracefully handle case where zlib library
2016 *) Several fixes and enhancements to the OID generation code. The old code
2017 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2018 handle numbers larger than ULONG_MAX, truncated printing and had a
2019 non standard OBJ_obj2txt() behaviour.
2022 *) Add support for building of engines under engine/ as shared libraries
2023 under VC++ build system.
2026 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2027 Hopefully, we will not see any false combination of paths any more.
2030 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2032 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2033 (part of SSL_OP_ALL). This option used to disable the
2034 countermeasure against man-in-the-middle protocol-version
2035 rollback in the SSL 2.0 server implementation, which is a bad
2036 idea. (CVE-2005-2969)
2038 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2039 for Information Security, National Institute of Advanced Industrial
2040 Science and Technology [AIST], Japan)]
2042 *) Add two function to clear and return the verify parameter flags.
2045 *) Keep cipherlists sorted in the source instead of sorting them at
2046 runtime, thus removing the need for a lock.
2049 *) Avoid some small subgroup attacks in Diffie-Hellman.
2050 [Nick Mathewson and Ben Laurie]
2052 *) Add functions for well-known primes.
2055 *) Extended Windows CE support.
2056 [Satoshi Nakamura and Andy Polyakov]
2058 *) Initialize SSL_METHOD structures at compile time instead of during
2059 runtime, thus removing the need for a lock.
2062 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2063 attempting to decrypt each encrypted key in turn. Add support to
2067 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2069 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2072 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2075 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2076 key into the same file any more.
2079 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2082 *) Add -utf8 command line and config file option to 'ca'.
2083 [Stefan <stf@udoma.org]
2085 *) Removed the macro des_crypt(), as it seems to conflict with some
2086 libraries. Use DES_crypt().
2089 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2090 involves renaming the source and generated shared-libs for
2091 both. The engines will accept the corrected or legacy ids
2092 ('ncipher' and '4758_cca' respectively) when binding. NB,
2093 this only applies when building 'shared'.
2094 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2096 *) Add attribute functions to EVP_PKEY structure. Modify
2097 PKCS12_create() to recognize a CSP name attribute and
2098 use it. Make -CSP option work again in pkcs12 utility.
2101 *) Add new functionality to the bn blinding code:
2102 - automatic re-creation of the BN_BLINDING parameters after
2103 a fixed number of uses (currently 32)
2104 - add new function for parameter creation
2105 - introduce flags to control the update behaviour of the
2106 BN_BLINDING parameters
2107 - hide BN_BLINDING structure
2108 Add a second BN_BLINDING slot to the RSA structure to improve
2109 performance when a single RSA object is shared among several
2113 *) Add support for DTLS.
2114 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2116 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2117 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2120 *) Remove buggy and incompletet DH cert support from
2121 ssl/ssl_rsa.c and ssl/s3_both.c
2124 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2125 the apps/openssl applications.
2128 *) Compile clean with "-Wall -Wmissing-prototypes
2129 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2130 DEBUG_SAFESTACK must also be set.
2133 *) Change ./Configure so that certain algorithms can be disabled by default.
2134 The new counterpiece to "no-xxx" is "enable-xxx".
2136 The patented RC5 and MDC2 algorithms will now be disabled unless
2137 "enable-rc5" and "enable-mdc2", respectively, are specified.
2139 (IDEA remains enabled despite being patented. This is because IDEA
2140 is frequently required for interoperability, and there is no license
2141 fee for non-commercial use. As before, "no-idea" can be used to
2142 avoid this algorithm.)
2146 *) Add processing of proxy certificates (see RFC 3820). This work was
2147 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2148 EGEE (Enabling Grids for E-science in Europe).
2151 *) RC4 performance overhaul on modern architectures/implementations, such
2152 as Intel P4, IA-64 and AMD64.
2155 *) New utility extract-section.pl. This can be used specify an alternative
2156 section number in a pod file instead of having to treat each file as
2157 a separate case in Makefile. This can be done by adding two lines to the
2160 =for comment openssl_section:XXX
2162 The blank line is mandatory.
2166 *) New arguments -certform, -keyform and -pass for s_client and s_server
2167 to allow alternative format key and certificate files and passphrase
2171 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2172 update associated structures and add various utility functions.
2174 Add new policy related verify parameters, include policy checking in
2175 standard verify code. Enhance 'smime' application with extra parameters
2176 to support policy checking and print out.
2179 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2180 Nehemiah processors. These extensions support AES encryption in hardware
2181 as well as RNG (though RNG support is currently disabled).
2182 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2184 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2187 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2188 [Andy Polyakov and a number of other people]
2190 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2191 implementation contributed by IBM.
2192 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2194 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2195 exponent rather than 'unsigned long'. There is a corresponding change to
2196 the new 'rsa_keygen' element of the RSA_METHOD structure.
2197 [Jelte Jansen, Geoff Thorpe]
2199 *) Functionality for creating the initial serial number file is now
2200 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2202 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2203 number file to 1, which is bound to cause problems. To avoid
2204 the problems while respecting compatibility between different 0.9.7
2205 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2206 CA.pl for serial number initialization. With the new release 0.9.8,
2207 we can fix the problem directly in the 'ca' utility.)
2210 *) Reduced header interdepencies by declaring more opaque objects in
2211 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2212 give fewer recursive includes, which could break lazy source code - so
2213 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2214 developers should define this symbol when building and using openssl to
2215 ensure they track the recommended behaviour, interfaces, [etc], but
2216 backwards-compatible behaviour prevails when this isn't defined.
2219 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2222 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2223 This will generate a random key of the appropriate length based on the
2224 cipher context. The EVP_CIPHER can provide its own random key generation
2225 routine to support keys of a specific form. This is used in the des and
2226 3des routines to generate a key of the correct parity. Update S/MIME
2227 code to use new functions and hence generate correct parity DES keys.
2228 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2229 valid (weak or incorrect parity).
2232 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2233 as looking them up. This is useful when the verified structure may contain
2234 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2235 present unless the new PKCS7_NO_CRL flag is asserted.
2238 *) Extend ASN1 oid configuration module. It now additionally accepts the
2241 shortName = some long name, 1.2.3.4
2244 *) Reimplemented the BN_CTX implementation. There is now no more static
2245 limitation on the number of variables it can handle nor the depth of the
2246 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2247 information can now expand as required, and rather than having a single
2248 static array of bignums, BN_CTX now uses a linked-list of such arrays
2249 allowing it to expand on demand whilst maintaining the usefulness of
2250 BN_CTX's "bundling".
2253 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2254 to allow all RSA operations to function using a single BN_CTX.
2257 *) Preliminary support for certificate policy evaluation and checking. This
2258 is initially intended to pass the tests outlined in "Conformance Testing
2259 of Relying Party Client Certificate Path Processing Logic" v1.07.
2262 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2263 remained unused and not that useful. A variety of other little bignum
2264 tweaks and fixes have also been made continuing on from the audit (see
2268 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2269 associated ASN1, EVP and SSL functions and old ASN1 macros.
2272 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2273 and this should never fail. So the return value from the use of
2274 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2275 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2278 *) BN_CTX_get() should return zero-valued bignums, providing the same
2279 initialised value as BN_new().
2280 [Geoff Thorpe, suggested by Ulf Möller]
2282 *) Support for inhibitAnyPolicy certificate extension.
2285 *) An audit of the BIGNUM code is underway, for which debugging code is
2286 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2287 is considered valid when processing BIGNUMs, and causes execution to
2288 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2289 further steps are taken to deliberately pollute unused data in BIGNUM
2290 structures to try and expose faulty code further on. For now, openssl will
2291 (in its default mode of operation) continue to tolerate the inconsistent
2292 forms that it has tolerated in the past, but authors and packagers should
2293 consider trying openssl and their own applications when compiled with
2294 these debugging symbols defined. It will help highlight potential bugs in
2295 their own code, and will improve the test coverage for OpenSSL itself. At
2296 some point, these tighter rules will become openssl's default to improve
2297 maintainability, though the assert()s and other overheads will remain only
2298 in debugging configurations. See bn.h for more details.
2299 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2301 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2302 that can only be obtained through BN_CTX_new() (which implicitly
2303 initialises it). The presence of this function only made it possible
2304 to overwrite an existing structure (and cause memory leaks).
2307 *) Because of the callback-based approach for implementing LHASH as a
2308 template type, lh_insert() adds opaque objects to hash-tables and
2309 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2310 to clean up those corresponding objects before destroying the hash table
2311 (and losing the object pointers). So some over-zealous constifications in
2312 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2313 objects as "const" and the lh_doall[_arg] callback wrappers are not
2314 prototyped to have "const" restrictions on the object pointers they are
2315 given (and so aren't required to cast them away any more).
2318 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2319 (speed) prefers to use its own implementation. The two implementations
2320 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2321 its object type properly exposed (MS_TM) instead of casting to/from "char
2322 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2323 aren't necessarily the greatest nomenclatures - but this is what was used
2324 internally to the implementation so I've used that for now.
2327 *) Ensure that deprecated functions do not get compiled when
2328 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2329 the self-tests were still using deprecated key-generation functions so
2330 these have been updated also.
2333 *) Reorganise PKCS#7 code to separate the digest location functionality
2334 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2335 New function PKCS7_set_digest() to set the digest type for PKCS#7
2336 digestedData type. Add additional code to correctly generate the
2337 digestedData type and add support for this type in PKCS7 initialization
2341 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2342 structure of type "other".
2345 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2346 sure the loop does correctly stop and breaking ("division by zero")
2347 modulus operations are not performed. The (pre-generated) prime
2348 table crypto/bn/bn_prime.h was already correct, but it could not be
2349 re-generated on some platforms because of the "division by zero"
2350 situation in the script.
2351 [Ralf S. Engelschall]
2353 *) Update support for ECC-based TLS ciphersuites according to
2354 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2355 SHA-1 now is only used for "small" curves (where the
2356 representation of a field element takes up to 24 bytes); for
2357 larger curves, the field element resulting from ECDH is directly
2358 used as premaster secret.
2359 [Douglas Stebila (Sun Microsystems Laboratories)]
2361 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2362 curve secp160r1 to the tests.
2363 [Douglas Stebila (Sun Microsystems Laboratories)]
2365 *) Add the possibility to load symbols globally with DSO.
2366 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2368 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2369 control of the error stack.
2372 *) Add support for STORE in ENGINE.
2375 *) Add the STORE type. The intention is to provide a common interface
2376 to certificate and key stores, be they simple file-based stores, or
2377 HSM-type store, or LDAP stores, or...
2378 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2381 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2382 pass a list of arguments to any function as well as provide a way
2383 for a function to pass data back to the caller.
2386 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2387 works like BUF_strdup() but can be used to duplicate a portion of
2388 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2392 *) Add the function sk_find_ex() which works like sk_find(), but will
2393 return an index to an element even if an exact match couldn't be
2394 found. The index is guaranteed to point at the element where the
2395 searched-for key would be inserted to preserve sorting order.
2398 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2399 takes an extra flags argument for optional functionality. Currently,
2400 the following flags are defined:
2402 OBJ_BSEARCH_VALUE_ON_NOMATCH
2403 This one gets OBJ_bsearch_ex() to return a pointer to the first
2404 element where the comparing function returns a negative or zero
2407 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2408 This one gets OBJ_bsearch_ex() to return a pointer to the first
2409 element where the comparing function returns zero. This is useful
2410 if there are more than one element where the comparing function
2414 *) Make it possible to create self-signed certificates with 'openssl ca'
2415 in such a way that the self-signed certificate becomes part of the
2416 CA database and uses the same mechanisms for serial number generation
2417 as all other certificate signing. The new flag '-selfsign' enables
2418 this functionality. Adapt CA.sh and CA.pl.in.
2421 *) Add functionality to check the public key of a certificate request
2422 against a given private. This is useful to check that a certificate
2423 request can be signed by that key (self-signing).
2426 *) Make it possible to have multiple active certificates with the same
2427 subject in the CA index file. This is done only if the keyword
2428 'unique_subject' is set to 'no' in the main CA section (default
2429 if 'CA_default') of the configuration file. The value is saved
2430 with the database itself in a separate index attribute file,
2431 named like the index file with '.attr' appended to the name.
2434 *) Generate muti valued AVAs using '+' notation in config files for
2438 *) Support for nameConstraints certificate extension.
2441 *) Support for policyConstraints certificate extension.
2444 *) Support for policyMappings certificate extension.
2447 *) Make sure the default DSA_METHOD implementation only uses its
2448 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2449 and change its own handlers to be NULL so as to remove unnecessary
2450 indirection. This lets alternative implementations fallback to the
2451 default implementation more easily.
2454 *) Support for directoryName in GeneralName related extensions
2458 *) Make it possible to link applications using Makefile.shared.
2459 Make that possible even when linking against static libraries!
2462 *) Support for single pass processing for S/MIME signing. This now
2463 means that S/MIME signing can be done from a pipe, in addition
2464 cleartext signing (multipart/signed type) is effectively streaming
2465 and the signed data does not need to be all held in memory.
2467 This is done with a new flag PKCS7_STREAM. When this flag is set
2468 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2469 is done after the data is output (and digests calculated) in
2470 SMIME_write_PKCS7().
2473 *) Add full support for -rpath/-R, both in shared libraries and
2474 applications, at least on the platforms where it's known how
2478 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2479 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2480 will now compute a table of multiples of the generator that
2481 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2482 faster (notably in the case of a single point multiplication,
2483 scalar * generator).
2484 [Nils Larsch, Bodo Moeller]
2486 *) IPv6 support for certificate extensions. The various extensions
2487 which use the IP:a.b.c.d can now take IPv6 addresses using the
2488 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2492 *) Added an ENGINE that implements RSA by performing private key
2493 exponentiations with the GMP library. The conversions to and from
2494 GMP's mpz_t format aren't optimised nor are any montgomery forms
2495 cached, and on x86 it appears OpenSSL's own performance has caught up.
2496 However there are likely to be other architectures where GMP could
2497 provide a boost. This ENGINE is not built in by default, but it can be
2498 specified at Configure time and should be accompanied by the necessary
2499 linker additions, eg;
2500 ./config -DOPENSSL_USE_GMP -lgmp
2503 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2504 testing availability of engines with "-t" - the old behaviour is
2505 produced by increasing the feature's verbosity with "-tt".
2508 *) ECDSA routines: under certain error conditions uninitialized BN objects
2509 could be freed. Solution: make sure initialization is performed early
2510 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2514 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2515 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2516 software implementations. For DSA and DH, parameter generation can
2517 also be overriden by providing the appropriate method callbacks.
2520 *) Change the "progress" mechanism used in key-generation and
2521 primality testing to functions that take a new BN_GENCB pointer in
2522 place of callback/argument pairs. The new API functions have "_ex"
2523 postfixes and the older functions are reimplemented as wrappers for
2524 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2525 declarations of the old functions to help (graceful) attempts to
2526 migrate to the new functions. Also, the new key-generation API
2527 functions operate on a caller-supplied key-structure and return
2528 success/failure rather than returning a key or NULL - this is to
2529 help make "keygen" another member function of RSA_METHOD etc.
2531 Example for using the new callback interface:
2533 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2537 BN_GENCB_set(&my_cb, my_callback, my_arg);
2539 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2540 /* For the meaning of a, b in calls to my_callback(), see the
2541 * documentation of the function that calls the callback.
2542 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2543 * my_callback should return 1 if it wants BN_is_prime_ex()
2544 * to continue, or 0 to stop.
2549 *) Change the ZLIB compression method to be stateful, and make it
2550 available to TLS with the number defined in
2551 draft-ietf-tls-compression-04.txt.
2554 *) Add the ASN.1 structures and functions for CertificatePair, which
2555 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2557 CertificatePair ::= SEQUENCE {
2558 forward [0] Certificate OPTIONAL,
2559 reverse [1] Certificate OPTIONAL,
2560 -- at least one of the pair shall be present -- }
2562 Also implement the PEM functions to read and write certificate
2563 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2565 This needed to be defined, mostly for the sake of the LDAP
2566 attribute crossCertificatePair, but may prove useful elsewhere as
2570 *) Make it possible to inhibit symlinking of shared libraries in
2571 Makefile.shared, for Cygwin's sake.
2574 *) Extend the BIGNUM API by creating a function
2575 void BN_set_negative(BIGNUM *a, int neg);
2576 and a macro that behave like
2577 int BN_is_negative(const BIGNUM *a);
2579 to avoid the need to access 'a->neg' directly in applications.
2582 *) Implement fast modular reduction for pseudo-Mersenne primes
2583 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2584 EC_GROUP_new_curve_GFp() will now automatically use this
2586 [Nils Larsch <nla@trustcenter.de>]
2588 *) Add new lock type (CRYPTO_LOCK_BN).
2591 *) Change the ENGINE framework to automatically load engines
2592 dynamically from specific directories unless they could be
2593 found to already be built in or loaded. Move all the
2594 current engines except for the cryptodev one to a new
2596 The engines in engines/ are built as shared libraries if
2597 the "shared" options was given to ./Configure or ./config.
2598 Otherwise, they are inserted in libcrypto.a.
2599 /usr/local/ssl/engines is the default directory for dynamic
2600 engines, but that can be overriden at configure time through
2601 the usual use of --prefix and/or --openssldir, and at run
2602 time with the environment variable OPENSSL_ENGINES.
2603 [Geoff Thorpe and Richard Levitte]
2605 *) Add Makefile.shared, a helper makefile to build shared
2606 libraries. Addapt Makefile.org.
2609 *) Add version info to Win32 DLLs.
2610 [Peter 'Luna' Runestig" <peter@runestig.com>]
2612 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2613 can be added using this API to created arbitrary PKCS#12
2614 files while avoiding the low level API.
2616 New options to PKCS12_create(), key or cert can be NULL and
2617 will then be omitted from the output file. The encryption
2618 algorithm NIDs can be set to -1 for no encryption, the mac
2619 iteration count can be set to 0 to omit the mac.
2621 Enhance pkcs12 utility by making the -nokeys and -nocerts
2622 options work when creating a PKCS#12 file. New option -nomac
2623 to omit the mac, NONE can be set for an encryption algorithm.
2624 New code is modified to use the enhanced PKCS12_create()
2625 instead of the low level API.
2628 *) Extend ASN1 encoder to support indefinite length constructed
2629 encoding. This can output sequences tags and octet strings in
2630 this form. Modify pk7_asn1.c to support indefinite length
2631 encoding. This is experimental and needs additional code to
2632 be useful, such as an ASN1 bio and some enhanced streaming
2635 Extend template encode functionality so that tagging is passed
2636 down to the template encoder.
2639 *) Let 'openssl req' fail if an argument to '-newkey' is not
2640 recognized instead of using RSA as a default.
2643 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2644 As these are not official, they are not included in "ALL";
2645 the "ECCdraft" ciphersuite group alias can be used to select them.
2646 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2648 *) Add ECDH engine support.
2649 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2651 *) Add ECDH in new directory crypto/ecdh/.
2652 [Douglas Stebila (Sun Microsystems Laboratories)]
2654 *) Let BN_rand_range() abort with an error after 100 iterations
2655 without success (which indicates a broken PRNG).
2658 *) Change BN_mod_sqrt() so that it verifies that the input value
2659 is really the square of the return value. (Previously,
2660 BN_mod_sqrt would show GIGO behaviour.)
2663 *) Add named elliptic curves over binary fields from X9.62, SECG,
2664 and WAP/WTLS; add OIDs that were still missing.
2666 [Sheueling Chang Shantz and Douglas Stebila
2667 (Sun Microsystems Laboratories)]
2669 *) Extend the EC library for elliptic curves over binary fields
2670 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2673 EC_GF2m_simple_method
2677 EC_GROUP_new_curve_GF2m
2678 EC_GROUP_set_curve_GF2m
2679 EC_GROUP_get_curve_GF2m
2680 EC_POINT_set_affine_coordinates_GF2m
2681 EC_POINT_get_affine_coordinates_GF2m
2682 EC_POINT_set_compressed_coordinates_GF2m
2684 Point compression for binary fields is disabled by default for
2685 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2688 As binary polynomials are represented as BIGNUMs, various members
2689 of the EC_GROUP and EC_POINT data structures can be shared
2690 between the implementations for prime fields and binary fields;
2691 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2692 are essentially identical to their ..._GFp counterparts.
2693 (For simplicity, the '..._GFp' prefix has been dropped from
2694 various internal method names.)
2696 An internal 'field_div' method (similar to 'field_mul' and
2697 'field_sqr') has been added; this is used only for binary fields.
2699 [Sheueling Chang Shantz and Douglas Stebila
2700 (Sun Microsystems Laboratories)]
2702 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2703 through methods ('mul', 'precompute_mult').
2705 The generic implementations (now internally called 'ec_wNAF_mul'
2706 and 'ec_wNAF_precomputed_mult') remain the default if these
2707 methods are undefined.
2709 [Sheueling Chang Shantz and Douglas Stebila
2710 (Sun Microsystems Laboratories)]
2712 *) New function EC_GROUP_get_degree, which is defined through
2713 EC_METHOD. For curves over prime fields, this returns the bit
2714 length of the modulus.
2716 [Sheueling Chang Shantz and Douglas Stebila
2717 (Sun Microsystems Laboratories)]
2719 *) New functions EC_GROUP_dup, EC_POINT_dup.
2720 (These simply call ..._new and ..._copy).
2722 [Sheueling Chang Shantz and Douglas Stebila
2723 (Sun Microsystems Laboratories)]
2725 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2726 Polynomials are represented as BIGNUMs (where the sign bit is not
2727 used) in the following functions [macros]:
2730 BN_GF2m_sub [= BN_GF2m_add]
2731 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2732 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2733 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2735 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2736 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2737 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2738 BN_GF2m_cmp [= BN_ucmp]
2740 (Note that only the 'mod' functions are actually for fields GF(2^m).
2741 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2743 For some functions, an the irreducible polynomial defining a
2744 field can be given as an 'unsigned int[]' with strictly
2745 decreasing elements giving the indices of those bits that are set;
2746 i.e., p[] represents the polynomial
2747 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2749 p[0] > p[1] > ... > p[k] = 0.
2750 This applies to the following functions:
2755 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2756 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2758 BN_GF2m_mod_sqrt_arr
2759 BN_GF2m_mod_solve_quad_arr
2763 Conversion can be performed by the following functions:
2768 bntest.c has additional tests for binary polynomial arithmetic.
2770 Two implementations for BN_GF2m_mod_div() are available.
2771 The default algorithm simply uses BN_GF2m_mod_inv() and
2772 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2773 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2774 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2776 [Sheueling Chang Shantz and Douglas Stebila
2777 (Sun Microsystems Laboratories)]
2779 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2780 functionality is disabled at compile-time.
2781 [Douglas Stebila <douglas.stebila@sun.com>]
2783 *) Change default behaviour of 'openssl asn1parse' so that more
2784 information is visible when viewing, e.g., a certificate:
2786 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2787 mode the content of non-printable OCTET STRINGs is output in a
2788 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2789 avoid the appearance of a printable string.
2790 [Nils Larsch <nla@trustcenter.de>]
2792 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2794 EC_GROUP_set_asn1_flag()
2795 EC_GROUP_get_asn1_flag()
2796 EC_GROUP_set_point_conversion_form()
2797 EC_GROUP_get_point_conversion_form()
2798 These control ASN1 encoding details:
2799 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2800 has been set to OPENSSL_EC_NAMED_CURVE.
2801 - Points are encoded in uncompressed form by default; options for
2802 asn1_for are as for point2oct, namely
2803 POINT_CONVERSION_COMPRESSED
2804 POINT_CONVERSION_UNCOMPRESSED
2805 POINT_CONVERSION_HYBRID
2807 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2810 EC_GROUP_get0_seed()
2811 EC_GROUP_get_seed_len()
2812 This is used only for ASN1 purposes (so far).
2813 [Nils Larsch <nla@trustcenter.de>]
2815 *) Add 'field_type' member to EC_METHOD, which holds the NID
2816 of the appropriate field type OID. The new function
2817 EC_METHOD_get_field_type() returns this value.
2818 [Nils Larsch <nla@trustcenter.de>]
2823 EC_POINT_point2hex()
2824 EC_POINT_hex2point()
2825 providing useful interfaces to EC_POINT_point2oct() and
2826 EC_POINT_oct2point().
2827 [Nils Larsch <nla@trustcenter.de>]
2829 *) Change internals of the EC library so that the functions
2830 EC_GROUP_set_generator()
2831 EC_GROUP_get_generator()
2832 EC_GROUP_get_order()
2833 EC_GROUP_get_cofactor()
2834 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2835 to methods, which would lead to unnecessary code duplication when
2836 adding different types of curves.
2837 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2839 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2840 arithmetic, and such that modified wNAFs are generated
2841 (which avoid length expansion in many cases).
2844 *) Add a function EC_GROUP_check_discriminant() (defined via
2845 EC_METHOD) that verifies that the curve discriminant is non-zero.
2847 Add a function EC_GROUP_check() that makes some sanity tests
2848 on a EC_GROUP, its generator and order. This includes
2849 EC_GROUP_check_discriminant().
2850 [Nils Larsch <nla@trustcenter.de>]
2852 *) Add ECDSA in new directory crypto/ecdsa/.
2854 Add applications 'openssl ecparam' and 'openssl ecdsa'
2855 (these are based on 'openssl dsaparam' and 'openssl dsa').
2857 ECDSA support is also included in various other files across the
2858 library. Most notably,
2859 - 'openssl req' now has a '-newkey ecdsa:file' option;
2860 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2861 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2862 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2863 them suitable for ECDSA where domain parameters must be
2864 extracted before the specific public key;
2865 - ECDSA engine support has been added.
2866 [Nils Larsch <nla@trustcenter.de>]
2868 *) Include some named elliptic curves, and add OIDs from X9.62,
2869 SECG, and WAP/WTLS. Each curve can be obtained from the new
2871 EC_GROUP_new_by_curve_name(),
2872 and the list of available named curves can be obtained with
2873 EC_get_builtin_curves().
2874 Also add a 'curve_name' member to EC_GROUP objects, which can be
2876 EC_GROUP_set_curve_name()
2877 EC_GROUP_get_curve_name()
2878 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2880 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2881 was actually never needed) and in BN_mul(). The removal in BN_mul()
2882 required a small change in bn_mul_part_recursive() and the addition
2883 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2884 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2885 bn_sub_words() and bn_add_words() except they take arrays with
2889 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2891 *) Cleanse PEM buffers before freeing them since they may contain
2893 [Benjamin Bennett <ben@psc.edu>]
2895 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2896 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2897 authentication-only ciphersuites.
2900 *) Since AES128 and AES256 share a single mask bit in the logic of
2901 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2902 kludge to work properly if AES128 is available and AES256 isn't.
2905 *) Expand security boundary to match 1.1.1 module.
2908 *) Remove redundant features: hash file source, editing of test vectors
2909 modify fipsld to use external fips_premain.c signature.
2912 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2913 run algorithm test programs.
2916 *) Make algorithm test programs more tolerant of whitespace.
2919 *) Have SSL/TLS server implementation tolerate "mismatched" record
2920 protocol version while receiving ClientHello even if the
2921 ClientHello is fragmented. (The server can't insist on the
2922 particular protocol version it has chosen before the ServerHello
2923 message has informed the client about his choice.)
2926 *) Load error codes if they are not already present instead of using a
2927 static variable. This allows them to be cleanly unloaded and reloaded.
2930 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2932 *) Introduce limits to prevent malicious keys being able to
2933 cause a denial of service. (CVE-2006-2940)
2934 [Steve Henson, Bodo Moeller]
2936 *) Fix ASN.1 parsing of certain invalid structures that can result
2937 in a denial of service. (CVE-2006-2937) [Steve Henson]
2939 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2940 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2942 *) Fix SSL client code which could crash if connecting to a
2943 malicious SSLv2 server. (CVE-2006-4343)
2944 [Tavis Ormandy and Will Drewry, Google Security Team]
2946 *) Change ciphersuite string processing so that an explicit
2947 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2948 will no longer include "AES128-SHA"), and any other similar
2949 ciphersuite (same bitmap) from *other* protocol versions (so that
2950 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2951 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2952 changes from 0.9.8b and 0.9.8d.
2955 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2957 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2958 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2960 *) Change the Unix randomness entropy gathering to use poll() when
2961 possible instead of select(), since the latter has some
2962 undesirable limitations.
2963 [Darryl Miles via Richard Levitte and Bodo Moeller]
2965 *) Disable rogue ciphersuites:
2967 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2968 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2969 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2971 The latter two were purportedly from
2972 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2975 Also deactive the remaining ciphersuites from
2976 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2977 unofficial, and the ID has long expired.
2980 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2981 dual-core machines) and other potential thread-safety issues.
2984 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2986 *) Adapt fipsld and the build system to link against the validated FIPS
2987 module in FIPS mode.
2990 *) Fixes for VC++ 2005 build under Windows.
2993 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2994 from a Windows bash shell such as MSYS. It is autodetected from the
2995 "config" script when run from a VC++ environment. Modify standard VC++
2996 build to use fipscanister.o from the GNU make build.
2999 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3001 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3002 The value now differs depending on if you build for FIPS or not.
3003 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3004 safely run with a non-FIPSed libcrypto, as it may crash because of
3005 the difference induced by this change.
3008 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3010 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3011 (part of SSL_OP_ALL). This option used to disable the
3012 countermeasure against man-in-the-middle protocol-version
3013 rollback in the SSL 2.0 server implementation, which is a bad
3014 idea. (CVE-2005-2969)
3016 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3017 for Information Security, National Institute of Advanced Industrial
3018 Science and Technology [AIST], Japan)]
3020 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3021 mainly for FIPS compliance and not fully integrated at this stage.
3024 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3025 the exponentiation using a fixed-length exponent. (Otherwise,
3026 the information leaked through timing could expose the secret key
3027 after many signatures; cf. Bleichenbacher's attack on DSA with
3031 *) Make a new fixed-window mod_exp implementation the default for
3032 RSA, DSA, and DH private-key operations so that the sequence of
3033 squares and multiplies and the memory access pattern are
3034 independent of the particular secret key. This will mitigate
3035 cache-timing and potential related attacks.
3037 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3038 and this is automatically used by BN_mod_exp_mont() if the new flag
3039 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3040 will use this BN flag for private exponents unless the flag
3041 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3042 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3044 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3046 *) Change the client implementation for SSLv23_method() and
3047 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3048 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3049 (Previously, the SSL 2.0 backwards compatible Client Hello
3050 message format would be used even with SSL_OP_NO_SSLv2.)
3053 *) Add support for smime-type MIME parameter in S/MIME messages which some
3057 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3058 a threadsafe manner. Modify rsa code to use new function and add calls
3059 to dsa and dh code (which had race conditions before).
3062 *) Include the fixed error library code in the C error file definitions
3063 instead of fixing them up at runtime. This keeps the error code
3064 structures constant.
3067 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3069 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3072 *) Fixes for newer kerberos headers. NB: the casts are needed because
3073 the 'length' field is signed on one version and unsigned on another
3074 with no (?) obvious way to tell the difference, without these VC++
3075 complains. Also the "definition" of FAR (blank) is no longer included
3076 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3077 some needed definitions.
3080 *) Undo Cygwin change.
3083 *) Added support for proxy certificates according to RFC 3820.
3084 Because they may be a security thread to unaware applications,
3085 they must be explicitely allowed in run-time. See
3086 docs/HOWTO/proxy_certificates.txt for further information.
3089 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3091 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3092 server and client random values. Previously
3093 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3094 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3096 This change has negligible security impact because:
3098 1. Server and client random values still have 24 bytes of pseudo random
3101 2. Server and client random values are sent in the clear in the initial
3104 3. The master secret is derived using the premaster secret (48 bytes in
3105 size for static RSA ciphersuites) as well as client server and random
3108 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3111 [Stephen Henson, reported by UK NISCC]
3113 *) Use Windows randomness collection on Cygwin.
3116 *) Fix hang in EGD/PRNGD query when communication socket is closed
3117 prematurely by EGD/PRNGD.
3118 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3120 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3123 *) Back-port of selected performance improvements from development
3124 branch, as well as improved support for PowerPC platforms.
3127 *) Add lots of checks for memory allocation failure, error codes to indicate
3128 failure and freeing up memory if a failure occurs.
3129 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3131 *) Add new -passin argument to dgst.
3134 *) Perform some character comparisons of different types in X509_NAME_cmp:
3135 this is needed for some certificates that reencode DNs into UTF8Strings
3136 (in violation of RFC3280) and can't or wont issue name rollover
3140 *) Make an explicit check during certificate validation to see that
3141 the CA setting in each certificate on the chain is correct. As a
3142 side effect always do the following basic checks on extensions,
3143 not just when there's an associated purpose to the check:
3145 - if there is an unhandled critical extension (unless the user
3146 has chosen to ignore this fault)
3147 - if the path length has been exceeded (if one is set at all)
3148 - that certain extensions fit the associated purpose (if one has
3152 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3154 *) Avoid a race condition when CRLs are checked in a multi threaded
3155 environment. This would happen due to the reordering of the revoked
3156 entries during signature checking and serial number lookup. Now the
3157 encoding is cached and the serial number sort performed under a lock.
3158 Add new STACK function sk_is_sorted().
3161 *) Add Delta CRL to the extension code.
3164 *) Various fixes to s3_pkt.c so alerts are sent properly.
3165 [David Holmes <d.holmes@f5.com>]
3167 *) Reduce the chances of duplicate issuer name and serial numbers (in
3168 violation of RFC3280) using the OpenSSL certificate creation utilities.
3169 This is done by creating a random 64 bit value for the initial serial
3170 number when a serial number file is created or when a self signed
3171 certificate is created using 'openssl req -x509'. The initial serial
3172 number file is created using 'openssl x509 -next_serial' in CA.pl
3173 rather than being initialized to 1.
3176 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3178 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3179 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3180 [Joe Orton, Steve Henson]
3182 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3184 [Joe Orton, Steve Henson]
3186 *) Make it possible to have multiple active certificates with the same
3187 subject in the CA index file. This is done only if the keyword
3188 'unique_subject' is set to 'no' in the main CA section (default
3189 if 'CA_default') of the configuration file. The value is saved
3190 with the database itself in a separate index attribute file,
3191 named like the index file with '.attr' appended to the name.
3194 *) X509 verify fixes. Disable broken certificate workarounds when
3195 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3196 keyUsage extension present. Don't accept CRLs with unhandled critical
3197 extensions: since verify currently doesn't process CRL extensions this
3198 rejects a CRL with *any* critical extensions. Add new verify error codes
3202 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3203 A clarification of RFC2560 will require the use of OCTET STRINGs and
3204 some implementations cannot handle the current raw format. Since OpenSSL
3205 copies and compares OCSP nonces as opaque blobs without any attempt at
3206 parsing them this should not create any compatibility issues.
3209 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3210 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3211 this HMAC (and other) operations are several times slower than OpenSSL
3215 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3216 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3218 *) Use the correct content when signing type "other".
3221 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3223 *) Fix various bugs revealed by running the NISCC test suite:
3225 Stop out of bounds reads in the ASN1 code when presented with
3226 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3228 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3230 If verify callback ignores invalid public key errors don't try to check
3231 certificate signature with the NULL public key.
3235 *) New -ignore_err option in ocsp application to stop the server
3236 exiting on the first error in a request.
3239 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3240 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3244 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3245 extra data after the compression methods not only for TLS 1.0
3246 but also for SSL 3.0 (as required by the specification).
3247 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3249 *) Change X509_certificate_type() to mark the key as exported/exportable
3250 when it's 512 *bits* long, not 512 bytes.
3253 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3254 blocks during encryption.
3257 *) Various fixes to base64 BIO and non blocking I/O. On write
3258 flushes were not handled properly if the BIO retried. On read
3259 data was not being buffered properly and had various logic bugs.
3260 This also affects blocking I/O when the data being decoded is a
3264 *) Various S/MIME bugfixes and compatibility changes:
3265 output correct application/pkcs7 MIME type if
3266 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3267 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3268 of files as .eml work). Correctly handle very long lines in MIME
3272 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3274 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3275 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3276 a protocol version number mismatch like a decryption error
3277 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3280 *) Turn on RSA blinding by default in the default implementation
3281 to avoid a timing attack. Applications that don't want it can call
3282 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3283 They would be ill-advised to do so in most cases.
3284 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3286 *) Change RSA blinding code so that it works when the PRNG is not
3287 seeded (in this case, the secret RSA exponent is abused as
3288 an unpredictable seed -- if it is not unpredictable, there
3289 is no point in blinding anyway). Make RSA blinding thread-safe
3290 by remembering the creator's thread ID in rsa->blinding and
3291 having all other threads use local one-time blinding factors
3292 (this requires more computation than sharing rsa->blinding, but
3293 avoids excessive locking; and if an RSA object is not shared
3294 between threads, blinding will still be very fast).
3297 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3298 ENGINE as defaults for all supported algorithms irrespective of
3299 the 'flags' parameter. 'flags' is now honoured, so applications
3300 should make sure they are passing it correctly.
3303 *) Target "mingw" now allows native Windows code to be generated in
3304 the Cygwin environment as well as with the MinGW compiler.
3307 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3309 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3310 via timing by performing a MAC computation even if incorrrect
3311 block cipher padding has been found. This is a countermeasure
3312 against active attacks where the attacker has to distinguish
3313 between bad padding and a MAC verification error. (CVE-2003-0078)
3315 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3316 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3317 Martin Vuagnoux (EPFL, Ilion)]
3319 *) Make the no-err option work as intended. The intention with no-err
3320 is not to have the whole error stack handling routines removed from
3321 libcrypto, it's only intended to remove all the function name and
3322 reason texts, thereby removing some of the footprint that may not
3323 be interesting if those errors aren't displayed anyway.
3325 NOTE: it's still possible for any application or module to have it's
3326 own set of error texts inserted. The routines are there, just not
3327 used by default when no-err is given.
3330 *) Add support for FreeBSD on IA64.
3331 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3333 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3334 Kerberos function mit_des_cbc_cksum(). Before this change,
3335 the value returned by DES_cbc_cksum() was like the one from
3336 mit_des_cbc_cksum(), except the bytes were swapped.
3337 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3339 *) Allow an application to disable the automatic SSL chain building.
3340 Before this a rather primitive chain build was always performed in
3341 ssl3_output_cert_chain(): an application had no way to send the
3342 correct chain if the automatic operation produced an incorrect result.
3344 Now the chain builder is disabled if either:
3346 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3348 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3350 The reasoning behind this is that an application would not want the
3351 auto chain building to take place if extra chain certificates are
3352 present and it might also want a means of sending no additional
3353 certificates (for example the chain has two certificates and the
3357 *) Add the possibility to build without the ENGINE framework.
3358 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3360 *) Under Win32 gmtime() can return NULL: check return value in
3361 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3364 *) DSA routines: under certain error conditions uninitialized BN objects
3365 could be freed. Solution: make sure initialization is performed early
3366 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3367 Nils Larsch <nla@trustcenter.de> via PR#459)
3370 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3371 checked on reconnect on the client side, therefore session resumption
3372 could still fail with a "ssl session id is different" error. This
3373 behaviour is masked when SSL_OP_ALL is used due to
3374 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3375 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3376 followup to PR #377.
3379 *) IA-32 assembler support enhancements: unified ELF targets, support
3380 for SCO/Caldera platforms, fix for Cygwin shared build.
3383 *) Add support for FreeBSD on sparc64. As a consequence, support for
3384 FreeBSD on non-x86 processors is separate from x86 processors on
3385 the config script, much like the NetBSD support.
3386 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3388 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3390 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3393 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3394 code (06) was taken as the first octet of the session ID and the last
3395 octet was ignored consequently. As a result SSLv2 client side session
3396 caching could not have worked due to the session ID mismatch between
3398 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3402 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3403 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3407 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3408 seems that in spite of existing for more than a year, many application
3409 author have done nothing to provide the necessary callbacks, which
3410 means that this particular engine will not work properly anywhere.
3411 This is a very unfortunate situation which forces us, in the name
3412 of usability, to give the hw_ncipher.c a static lock, which is part
3414 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3415 appear in 0.9.8 or later. We EXPECT application authors to have
3416 dealt properly with this when 0.9.8 is released (unless we actually
3417 make such changes in the libcrypto locking code that changes will
3418 have to be made anyway).
3421 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3422 octets have been read, EOF or an error occurs. Without this change
3423 some truncated ASN1 structures will not produce an error.
3426 *) Disable Heimdal support, since it hasn't been fully implemented.
3427 Still give the possibility to force the use of Heimdal, but with
3428 warnings and a request that patches get sent to openssl-dev.
3431 *) Add the VC-CE target, introduce the WINCE sysname, and add
3432 INSTALL.WCE and appropriate conditionals to make it build.
3433 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3435 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3436 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3437 edit numbers of the version.
3438 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3440 *) Introduce safe string copy and catenation functions
3441 (BUF_strlcpy() and BUF_strlcat()).
3442 [Ben Laurie (CHATS) and Richard Levitte]
3444 *) Avoid using fixed-size buffers for one-line DNs.
3445 [Ben Laurie (CHATS)]
3447 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3448 resizing buffers containing secrets, and use where appropriate.
3449 [Ben Laurie (CHATS)]
3451 *) Avoid using fixed size buffers for configuration file location.
3452 [Ben Laurie (CHATS)]
3454 *) Avoid filename truncation for various CA files.
3455 [Ben Laurie (CHATS)]
3457 *) Use sizeof in preference to magic numbers.
3458 [Ben Laurie (CHATS)]
3460 *) Avoid filename truncation in cert requests.
3461 [Ben Laurie (CHATS)]
3463 *) Add assertions to check for (supposedly impossible) buffer
3465 [Ben Laurie (CHATS)]
3467 *) Don't cache truncated DNS entries in the local cache (this could
3468 potentially lead to a spoofing attack).
3469 [Ben Laurie (CHATS)]
3471 *) Fix various buffers to be large enough for hex/decimal
3472 representations in a platform independent manner.
3473 [Ben Laurie (CHATS)]
3475 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3476 resizing buffers containing secrets, and use where appropriate.
3477 [Ben Laurie (CHATS)]
3479 *) Add BIO_indent() to avoid much slightly worrying code to do
3481 [Ben Laurie (CHATS)]
3483 *) Convert sprintf()/BIO_puts() to BIO_printf().
3484 [Ben Laurie (CHATS)]
3486 *) buffer_gets() could terminate with the buffer only half
3488 [Ben Laurie (CHATS)]
3490 *) Add assertions to prevent user-supplied crypto functions from
3491 overflowing internal buffers by having large block sizes, etc.
3492 [Ben Laurie (CHATS)]
3494 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3496 [Ben Laurie (CHATS)]
3498 *) Eliminate unused copy of key in RC4.
3499 [Ben Laurie (CHATS)]
3501 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3502 [Ben Laurie (CHATS)]
3504 *) Fix off-by-one error in EGD path.
3505 [Ben Laurie (CHATS)]
3507 *) If RANDFILE path is too long, ignore instead of truncating.
3508 [Ben Laurie (CHATS)]
3510 *) Eliminate unused and incorrectly sized X.509 structure
3512 [Ben Laurie (CHATS)]
3514 *) Eliminate unused and dangerous function knumber().
3515 [Ben Laurie (CHATS)]
3517 *) Eliminate unused and dangerous structure, KSSL_ERR.
3518 [Ben Laurie (CHATS)]
3520 *) Protect against overlong session ID context length in an encoded
3521 session object. Since these are local, this does not appear to be
3523 [Ben Laurie (CHATS)]
3525 *) Change from security patch (see 0.9.6e below) that did not affect
3526 the 0.9.6 release series:
3528 Remote buffer overflow in SSL3 protocol - an attacker could
3529 supply an oversized master key in Kerberos-enabled versions.
3531 [Ben Laurie (CHATS)]
3533 *) Change the SSL kerb5 codes to match RFC 2712.
3536 *) Make -nameopt work fully for req and add -reqopt switch.
3537 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3539 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3540 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3542 *) Make sure tests can be performed even if the corresponding algorithms
3543 have been removed entirely. This was also the last step to make
3544 OpenSSL compilable with DJGPP under all reasonable conditions.
3545 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3547 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3548 to allow version independent disabling of normally unselected ciphers,
3549 which may be activated as a side-effect of selecting a single cipher.
3551 (E.g., cipher list string "RSA" enables ciphersuites that are left
3552 out of "ALL" because they do not provide symmetric encryption.
3553 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3554 [Lutz Jaenicke, Bodo Moeller]
3556 *) Add appropriate support for separate platform-dependent build
3557 directories. The recommended way to make a platform-dependent
3558 build directory is the following (tested on Linux), maybe with
3561 # Place yourself outside of the OpenSSL source tree. In
3562 # this example, the environment variable OPENSSL_SOURCE
3563 # is assumed to contain the absolute OpenSSL source directory.
3564 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3565 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3566 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3567 mkdir -p `dirname $F`
3568 ln -s $OPENSSL_SOURCE/$F $F
3571 To be absolutely sure not to disturb the source tree, a "make clean"
3572 is a good thing. If it isn't successfull, don't worry about it,
3573 it probably means the source directory is very clean.
3576 *) Make sure any ENGINE control commands make local copies of string
3577 pointers passed to them whenever necessary. Otherwise it is possible
3578 the caller may have overwritten (or deallocated) the original string
3579 data when a later ENGINE operation tries to use the stored values.
3580 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3582 *) Improve diagnostics in file reading and command-line digests.
3583 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3585 *) Add AES modes CFB and OFB to the object database. Correct an
3586 error in AES-CFB decryption.
3589 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3590 allows existing EVP_CIPHER_CTX structures to be reused after
3591 calling EVP_*Final(). This behaviour is used by encryption
3592 BIOs and some applications. This has the side effect that
3593 applications must explicitly clean up cipher contexts with
3594 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3597 *) Check the values of dna and dnb in bn_mul_recursive before calling
3598 bn_mul_comba (a non zero value means the a or b arrays do not contain
3599 n2 elements) and fallback to bn_mul_normal if either is not zero.
3602 *) Fix escaping of non-ASCII characters when using the -subj option
3603 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3606 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3607 form for "surname", serialNumber has no short form.
3608 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3609 therefore remove "mail" short name for "internet 7".
3610 The OID for unique identifiers in X509 certificates is
3611 x500UniqueIdentifier, not uniqueIdentifier.
3612 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3615 *) Add an "init" command to the ENGINE config module and auto initialize
3616 ENGINEs. Without any "init" command the ENGINE will be initialized
3617 after all ctrl commands have been executed on it. If init=1 the
3618 ENGINE is initailized at that point (ctrls before that point are run
3619 on the uninitialized ENGINE and after on the initialized one). If
3620 init=0 then the ENGINE will not be iniatialized at all.
3623 *) Fix the 'app_verify_callback' interface so that the user-defined
3624 argument is actually passed to the callback: In the
3625 SSL_CTX_set_cert_verify_callback() prototype, the callback
3626 declaration has been changed from
3629 int (*cb)(X509_STORE_CTX *,void *);
3630 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3631 i=s->ctx->app_verify_callback(&ctx)
3632 has been changed into
3633 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3635 To update applications using SSL_CTX_set_cert_verify_callback(),
3636 a dummy argument can be added to their callback functions.
3637 [D. K. Smetters <smetters@parc.xerox.com>]
3639 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3640 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3642 *) Add and OPENSSL_LOAD_CONF define which will cause
3643 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3644 This allows older applications to transparently support certain
3645 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3646 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3647 load the config file and OPENSSL_add_all_algorithms_conf() which will
3648 always load it have also been added.
3651 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3652 Adjust NIDs and EVP layer.
3653 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3655 *) Config modules support in openssl utility.
3657 Most commands now load modules from the config file,
3658 though in a few (such as version) this isn't done
3659 because it couldn't be used for anything.
3661 In the case of ca and req the config file used is
3662 the same as the utility itself: that is the -config
3663 command line option can be used to specify an
3667 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3668 use "openssl_conf" if filename is NULL use default openssl config file.
3671 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3672 config section name. Add a new flag to tolerate a missing config file
3673 and move code to CONF_modules_load_file().
3676 *) Support for crypto accelerator cards from Accelerated Encryption
3677 Processing, www.aep.ie. (Use engine 'aep')
3678 The support was copied from 0.9.6c [engine] and adapted/corrected
3679 to work with the new engine framework.
3680 [AEP Inc. and Richard Levitte]
3682 *) Support for SureWare crypto accelerator cards from Baltimore
3683 Technologies. (Use engine 'sureware')
3684 The support was copied from 0.9.6c [engine] and adapted
3685 to work with the new engine framework.
3688 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3689 make the newer ENGINE framework commands for the CHIL engine work.
3690 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3692 *) Make it possible to produce shared libraries on ReliantUNIX.
3693 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3695 *) Add the configuration target debug-linux-ppro.
3696 Make 'openssl rsa' use the general key loading routines
3697 implemented in apps.c, and make those routines able to
3698 handle the key format FORMAT_NETSCAPE and the variant
3700 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3702 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3703 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3705 *) Add -keyform to rsautl, and document -engine.
3706 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3708 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3709 BIO_R_NO_SUCH_FILE error code rather than the generic
3710 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3713 *) Add new functions
3715 ERR_peek_last_error_line
3716 ERR_peek_last_error_line_data.
3717 These are similar to
3720 ERR_peek_error_line_data,
3721 but report on the latest error recorded rather than the first one
3722 still in the error queue.
3723 [Ben Laurie, Bodo Moeller]
3725 *) default_algorithms option in ENGINE config module. This allows things
3727 default_algorithms = ALL
3728 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3731 *) Prelminary ENGINE config module.
3734 *) New experimental application configuration code.
3737 *) Change the AES code to follow the same name structure as all other
3738 symmetric ciphers, and behave the same way. Move everything to
3739 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3740 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3742 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3743 [Ben Laurie and Theo de Raadt]
3745 *) Add option to output public keys in req command.
3746 [Massimiliano Pala madwolf@openca.org]
3748 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3749 (up to about 10% better than before for P-192 and P-224).
3752 *) New functions/macros
3754 SSL_CTX_set_msg_callback(ctx, cb)
3755 SSL_CTX_set_msg_callback_arg(ctx, arg)
3756 SSL_set_msg_callback(ssl, cb)
3757 SSL_set_msg_callback_arg(ssl, arg)
3759 to request calling a callback function
3761 void cb(int write_p, int version, int content_type,
3762 const void *buf, size_t len, SSL *ssl, void *arg)
3764 whenever a protocol message has been completely received
3765 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3766 protocol version according to which the SSL library interprets
3767 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3768 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3769 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3770 specification (change_cipher_spec(20), alert(21), handshake(22)).
3771 'buf' and 'len' point to the actual message, 'ssl' to the
3772 SSL object, and 'arg' is the application-defined value set by
3773 SSL[_CTX]_set_msg_callback_arg().
3775 'openssl s_client' and 'openssl s_server' have new '-msg' options
3776 to enable a callback that displays all protocol messages.
3779 *) Change the shared library support so shared libraries are built as
3780 soon as the corresponding static library is finished, and thereby get
3781 openssl and the test programs linked against the shared library.
3782 This still only happens when the keyword "shard" has been given to
3783 the configuration scripts.
3785 NOTE: shared library support is still an experimental thing, and
3786 backward binary compatibility is still not guaranteed.
3787 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3789 *) Add support for Subject Information Access extension.
3790 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3792 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3793 additional bytes when new memory had to be allocated, not just
3794 when reusing an existing buffer.
3797 *) New command line and configuration option 'utf8' for the req command.
3798 This allows field values to be specified as UTF8 strings.
3801 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3802 runs for the former and machine-readable output for the latter.
3805 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3806 of the e-mail address in the DN (i.e., it will go into a certificate
3807 extension only). The new configuration file option 'email_in_dn = no'
3808 has the same effect.
3809 [Massimiliano Pala madwolf@openca.org]
3811 *) Change all functions with names starting with des_ to be starting
3812 with DES_ instead. Add wrappers that are compatible with libdes,
3813 but are named _ossl_old_des_*. Finally, add macros that map the
3814 des_* symbols to the corresponding _ossl_old_des_* if libdes
3815 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3816 desired, the des_* symbols will be mapped to DES_*, with one
3819 Since we provide two compatibility mappings, the user needs to
3820 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3821 compatibility is desired. The default (i.e., when that macro
3822 isn't defined) is OpenSSL 0.9.6c compatibility.
3824 There are also macros that enable and disable the support of old
3825 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3826 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3827 are defined, the default will apply: to support the old des routines.
3829 In either case, one must include openssl/des.h to get the correct
3830 definitions. Do not try to just include openssl/des_old.h, that
3833 NOTE: This is a major break of an old API into a new one. Software
3834 authors are encouraged to switch to the DES_ style functions. Some
3835 time in the future, des_old.h and the libdes compatibility functions
3836 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3837 default), and then completely removed.
3840 *) Test for certificates which contain unsupported critical extensions.
3841 If such a certificate is found during a verify operation it is
3842 rejected by default: this behaviour can be overridden by either
3843 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3844 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3845 X509_supported_extension() has also been added which returns 1 if a
3846 particular extension is supported.
3849 *) Modify the behaviour of EVP cipher functions in similar way to digests
3850 to retain compatibility with existing code.
3853 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3854 compatibility with existing code. In particular the 'ctx' parameter does
3855 not have to be to be initialized before the call to EVP_DigestInit() and
3856 it is tidied up after a call to EVP_DigestFinal(). New function
3857 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3858 EVP_MD_CTX_copy() changed to not require the destination to be
3859 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3860 requires the destination to be valid.
3862 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3863 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3866 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3867 so that complete 'Handshake' protocol structures are kept in memory
3868 instead of overwriting 'msg_type' and 'length' with 'body' data.
3871 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3872 [Massimo Santin via Richard Levitte]
3874 *) Major restructuring to the underlying ENGINE code. This includes
3875 reduction of linker bloat, separation of pure "ENGINE" manipulation
3876 (initialisation, etc) from functionality dealing with implementations
3877 of specific crypto iterfaces. This change also introduces integrated
3878 support for symmetric ciphers and digest implementations - so ENGINEs
3879 can now accelerate these by providing EVP_CIPHER and EVP_MD
3880 implementations of their own. This is detailed in crypto/engine/README
3881 as it couldn't be adequately described here. However, there are a few
3882 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3883 were changed in the original introduction of ENGINE code have now
3884 reverted back - the hooking from this code to ENGINE is now a good
3885 deal more passive and at run-time, operations deal directly with
3886 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3887 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3888 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3889 they were not being used by the framework as there is no concept of a
3890 BIGNUM_METHOD and they could not be generalised to the new
3891 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3892 ENGINE_cpy() has been removed as it cannot be consistently defined in
3896 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3899 *) Change mkdef.pl to sort symbols that get the same entry number,
3900 and make sure the automatically generated functions ERR_load_*
3901 become part of libeay.num as well.
3904 *) New function SSL_renegotiate_pending(). This returns true once
3905 renegotiation has been requested (either SSL_renegotiate() call
3906 or HelloRequest/ClientHello receveived from the peer) and becomes
3907 false once a handshake has been completed.
3908 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3909 sends a HelloRequest, but does not ensure that a handshake takes
3910 place. SSL_renegotiate_pending() is useful for checking if the
3911 client has followed the request.)
3914 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3915 By default, clients may request session resumption even during
3916 renegotiation (if session ID contexts permit); with this option,
3917 session resumption is possible only in the first handshake.
3919 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3920 more bits available for options that should not be part of
3921 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3924 *) Add some demos for certificate and certificate request creation.
3927 *) Make maximum certificate chain size accepted from the peer application
3928 settable (SSL*_get/set_max_cert_list()), as proposed by
3929 "Douglas E. Engert" <deengert@anl.gov>.
3932 *) Add support for shared libraries for Unixware-7
3933 (Boyd Lynn Gerber <gerberb@zenez.com>).
3936 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3937 be done prior to destruction. Use this to unload error strings from
3938 ENGINEs that load their own error strings. NB: This adds two new API
3939 functions to "get" and "set" this destroy handler in an ENGINE.
3942 *) Alter all existing ENGINE implementations (except "openssl" and
3943 "openbsd") to dynamically instantiate their own error strings. This
3944 makes them more flexible to be built both as statically-linked ENGINEs
3945 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3946 Also, add stub code to each that makes building them as self-contained
3947 shared-libraries easier (see README.ENGINE).
3950 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3951 implementations into applications that are completely implemented in
3952 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3953 commands that can be used to configure what shared-library to load and
3954 to control aspects of the way it is handled. Also, made an update to
3955 the README.ENGINE file that brings its information up-to-date and
3956 provides some information and instructions on the "dynamic" ENGINE
3957 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3960 *) Make it possible to unload ranges of ERR strings with a new
3961 "ERR_unload_strings" function.
3964 *) Add a copy() function to EVP_MD.
3967 *) Make EVP_MD routines take a context pointer instead of just the
3968 md_data void pointer.
3971 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3972 that the digest can only process a single chunk of data
3973 (typically because it is provided by a piece of
3974 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3975 is only going to provide a single chunk of data, and hence the
3976 framework needn't accumulate the data for oneshot drivers.
3979 *) As with "ERR", make it possible to replace the underlying "ex_data"
3980 functions. This change also alters the storage and management of global
3981 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3982 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3983 index counters. The API functions that use this state have been changed
3984 to take a "class_index" rather than pointers to the class's local STACK
3985 and counter, and there is now an API function to dynamically create new
3986 classes. This centralisation allows us to (a) plug a lot of the
3987 thread-safety problems that existed, and (b) makes it possible to clean
3988 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3989 such data would previously have always leaked in application code and
3990 workarounds were in place to make the memory debugging turn a blind eye
3991 to it. Application code that doesn't use this new function will still
3992 leak as before, but their memory debugging output will announce it now
3993 rather than letting it slide.
3995 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3996 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3997 has a return value to indicate success or failure.
4000 *) Make it possible to replace the underlying "ERR" functions such that the
4001 global state (2 LHASH tables and 2 locks) is only used by the "default"
4002 implementation. This change also adds two functions to "get" and "set"
4003 the implementation prior to it being automatically set the first time
4004 any other ERR function takes place. Ie. an application can call "get",
4005 pass the return value to a module it has just loaded, and that module
4006 can call its own "set" function using that value. This means the
4007 module's "ERR" operations will use (and modify) the error state in the
4008 application and not in its own statically linked copy of OpenSSL code.
4011 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4012 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4013 the operation, and provides a more encapsulated way for external code
4014 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4015 to use these functions rather than manually incrementing the counts.
4017 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4020 *) Add EVP test program.
4023 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4026 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4027 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4028 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4029 These allow a CRL to be built without having to access X509_CRL fields
4030 directly. Modify 'ca' application to use new functions.
4033 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4034 bug workarounds. Rollback attack detection is a security feature.
4035 The problem will only arise on OpenSSL servers when TLSv1 is not
4036 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4037 Software authors not wanting to support TLSv1 will have special reasons
4038 for their choice and can explicitly enable this option.
4039 [Bodo Moeller, Lutz Jaenicke]
4041 *) Rationalise EVP so it can be extended: don't include a union of
4042 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4043 (similar to those existing for EVP_CIPHER_CTX).
4048 EVP_MD_CTX_init(&md); /* new function call */
4049 EVP_DigestInit(&md, EVP_sha1());
4050 EVP_DigestUpdate(&md, in, len);
4051 EVP_DigestFinal(&md, out, NULL);
4052 EVP_MD_CTX_cleanup(&md); /* new function call */
4056 *) Make DES key schedule conform to the usual scheme, as well as
4057 correcting its structure. This means that calls to DES functions
4058 now have to pass a pointer to a des_key_schedule instead of a
4059 plain des_key_schedule (which was actually always a pointer
4062 des_key_schedule ks;
4064 des_set_key_checked(..., &ks);
4065 des_ncbc_encrypt(..., &ks, ...);
4067 (Note that a later change renames 'des_...' into 'DES_...'.)
4070 *) Initial reduction of linker bloat: the use of some functions, such as
4071 PEM causes large amounts of unused functions to be linked in due to
4072 poor organisation. For example pem_all.c contains every PEM function
4073 which has a knock on effect of linking in large amounts of (unused)
4074 ASN1 code. Grouping together similar functions and splitting unrelated
4075 functions prevents this.
4078 *) Cleanup of EVP macros.
4081 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4082 correct _ecb suffix.
4085 *) Add initial OCSP responder support to ocsp application. The
4086 revocation information is handled using the text based index
4087 use by the ca application. The responder can either handle
4088 requests generated internally, supplied in files (for example
4089 via a CGI script) or using an internal minimal server.
4092 *) Add configuration choices to get zlib compression for TLS.
4095 *) Changes to Kerberos SSL for RFC 2712 compliance:
4096 1. Implemented real KerberosWrapper, instead of just using
4097 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4098 2. Implemented optional authenticator field of KerberosWrapper.
4100 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4101 and authenticator structs; see crypto/krb5/.
4103 Generalized Kerberos calls to support multiple Kerberos libraries.
4104 [Vern Staats <staatsvr@asc.hpc.mil>,
4105 Jeffrey Altman <jaltman@columbia.edu>
4106 via Richard Levitte]
4108 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4109 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4110 values for each of the key sizes rather than having just
4111 parameters (and 'speed' generating keys each time).
4114 *) Speed up EVP routines.
4117 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4118 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4119 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4120 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4122 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4123 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4124 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4127 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4129 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4132 *) Added the OS2-EMX target.
4133 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4135 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4136 to support NCONF routines in extension code. New function CONF_set_nconf()
4137 to allow functions which take an NCONF to also handle the old LHASH
4138 structure: this means that the old CONF compatible routines can be
4139 retained (in particular wrt extensions) without having to duplicate the
4140 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4143 *) Enhance the general user interface with mechanisms for inner control
4144 and with possibilities to have yes/no kind of prompts.
4147 *) Change all calls to low level digest routines in the library and
4148 applications to use EVP. Add missing calls to HMAC_cleanup() and
4149 don't assume HMAC_CTX can be copied using memcpy().
4150 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4152 *) Add the possibility to control engines through control names but with
4153 arbitrary arguments instead of just a string.
4154 Change the key loaders to take a UI_METHOD instead of a callback
4155 function pointer. NOTE: this breaks binary compatibility with earlier
4156 versions of OpenSSL [engine].
4157 Adapt the nCipher code for these new conditions and add a card insertion
4161 *) Enhance the general user interface with mechanisms to better support
4162 dialog box interfaces, application-defined prompts, the possibility
4163 to use defaults (for example default passwords from somewhere else)
4164 and interrupts/cancellations.
4167 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4168 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4171 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4172 tidy up some unnecessarily weird code in 'sk_new()').
4173 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4175 *) Change the key loading routines for ENGINEs to use the same kind
4176 callback (pem_password_cb) as all other routines that need this
4180 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4181 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4182 than this minimum value is recommended.
4185 *) New random seeder for OpenVMS, using the system process statistics
4186 that are easily reachable.
4189 *) Windows apparently can't transparently handle global
4190 variables defined in DLLs. Initialisations such as:
4192 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4194 wont compile. This is used by the any applications that need to
4195 declare their own ASN1 modules. This was fixed by adding the option
4196 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4197 needed for static libraries under Win32.
4200 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4201 setting of purpose and trust fields. New X509_STORE trust and
4202 purpose functions and tidy up setting in other SSL functions.
4205 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4206 structure. These are inherited by X509_STORE_CTX when it is
4207 initialised. This allows various defaults to be set in the
4208 X509_STORE structure (such as flags for CRL checking and custom
4209 purpose or trust settings) for functions which only use X509_STORE_CTX
4210 internally such as S/MIME.
4212 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4213 trust settings if they are not set in X509_STORE. This allows X509_STORE
4214 purposes and trust (in S/MIME for example) to override any set by default.
4216 Add command line options for CRL checking to smime, s_client and s_server
4220 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4221 are set then the CRL is looked up in the X509_STORE structure and
4222 its validity and signature checked, then if the certificate is found
4223 in the CRL the verify fails with a revoked error.
4225 Various new CRL related callbacks added to X509_STORE_CTX structure.
4227 Command line options added to 'verify' application to support this.
4229 This needs some additional work, such as being able to handle multiple
4230 CRLs with different times, extension based lookup (rather than just
4231 by subject name) and ultimately more complete V2 CRL extension
4235 *) Add a general user interface API (crypto/ui/). This is designed
4236 to replace things like des_read_password and friends (backward
4237 compatibility functions using this new API are provided).
4238 The purpose is to remove prompting functions from the DES code
4239 section as well as provide for prompting through dialog boxes in
4240 a window system and the like.
4243 *) Add "ex_data" support to ENGINE so implementations can add state at a
4244 per-structure level rather than having to store it globally.
4247 *) Make it possible for ENGINE structures to be copied when retrieved by
4248 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4249 This causes the "original" ENGINE structure to act like a template,
4250 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4251 operational state can be localised to each ENGINE structure, despite the
4252 fact they all share the same "methods". New ENGINE structures returned in
4253 this case have no functional references and the return value is the single
4254 structural reference. This matches the single structural reference returned
4255 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4259 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4260 needs to match any other type at all we need to manually clear the
4264 *) Changes to the "openssl engine" utility to include;
4265 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4266 about an ENGINE's available control commands.
4267 - executing control commands from command line arguments using the
4268 '-pre' and '-post' switches. '-post' is only used if '-t' is
4269 specified and the ENGINE is successfully initialised. The syntax for
4270 the individual commands are colon-separated, for example;
4271 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4274 *) New dynamic control command support for ENGINEs. ENGINEs can now
4275 declare their own commands (numbers), names (strings), descriptions,
4276 and input types for run-time discovery by calling applications. A
4277 subset of these commands are implicitly classed as "executable"
4278 depending on their input type, and only these can be invoked through
4279 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4280 can be based on user input, config files, etc). The distinction is
4281 that "executable" commands cannot return anything other than a boolean
4282 result and can only support numeric or string input, whereas some
4283 discoverable commands may only be for direct use through
4284 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4285 pointers, or other custom uses. The "executable" commands are to
4286 support parameterisations of ENGINE behaviour that can be
4287 unambiguously defined by ENGINEs and used consistently across any
4288 OpenSSL-based application. Commands have been added to all the
4289 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4290 control over shared-library paths without source code alterations.
4293 *) Changed all ENGINE implementations to dynamically allocate their
4294 ENGINEs rather than declaring them statically. Apart from this being
4295 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4296 this also allows the implementations to compile without using the
4297 internal engine_int.h header.
4300 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4301 'const' value. Any code that should be able to modify a RAND_METHOD
4302 should already have non-const pointers to it (ie. they should only
4303 modify their own ones).
4306 *) Made a variety of little tweaks to the ENGINE code.
4307 - "atalla" and "ubsec" string definitions were moved from header files
4308 to C code. "nuron" string definitions were placed in variables
4309 rather than hard-coded - allowing parameterisation of these values
4310 later on via ctrl() commands.
4311 - Removed unused "#if 0"'d code.
4312 - Fixed engine list iteration code so it uses ENGINE_free() to release
4313 structural references.
4314 - Constified the RAND_METHOD element of ENGINE structures.
4315 - Constified various get/set functions as appropriate and added
4316 missing functions (including a catch-all ENGINE_cpy that duplicates
4317 all ENGINE values onto a new ENGINE except reference counts/state).
4318 - Removed NULL parameter checks in get/set functions. Setting a method
4319 or function to NULL is a way of cancelling out a previously set
4320 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4321 and doesn't justify the extra error symbols and code.
4322 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4323 flags from engine_int.h to engine.h.
4324 - Changed prototypes for ENGINE handler functions (init(), finish(),
4325 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4328 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4329 to the algorithm using long division. The binary algorithm can be
4330 used only if the modulus is odd. On 32-bit systems, it is faster
4331 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4332 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4333 up to 450 bits. In 64-bit environments, the binary algorithm
4334 appears to be advantageous for much longer moduli; here we use it
4335 for moduli up to 2048 bits.
4338 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4339 could not support the combine flag in choice fields.
4342 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4343 extensions from a certificate request to the certificate.
4346 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4347 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4348 file: this allows the display of the certificate about to be
4349 signed to be customised, to allow certain fields to be included
4350 or excluded and extension details. The old system didn't display
4351 multicharacter strings properly, omitted fields not in the policy
4352 and couldn't display additional details such as extensions.
4355 *) Function EC_POINTs_mul for multiple scalar multiplication
4356 of an arbitrary number of elliptic curve points
4357 \sum scalars[i]*points[i],
4358 optionally including the generator defined for the EC_GROUP:
4359 scalar*generator + \sum scalars[i]*points[i].
4361 EC_POINT_mul is a simple wrapper function for the typical case
4362 that the point list has just one item (besides the optional
4366 *) First EC_METHODs for curves over GF(p):
4368 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4369 operations and provides various method functions that can also
4370 operate with faster implementations of modular arithmetic.
4372 EC_GFp_mont_method() reuses most functions that are part of
4373 EC_GFp_simple_method, but uses Montgomery arithmetic.
4375 [Bodo Moeller; point addition and point doubling
4376 implementation directly derived from source code provided by
4377 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4379 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4380 crypto/ec/ec_lib.c):
4382 Curves are EC_GROUP objects (with an optional group generator)
4383 based on EC_METHODs that are built into the library.
4385 Points are EC_POINT objects based on EC_GROUP objects.
4387 Most of the framework would be able to handle curves over arbitrary
4388 finite fields, but as there are no obvious types for fields other
4389 than GF(p), some functions are limited to that for now.
4392 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4393 that the file contains a complete HTTP response.
4396 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4397 change the def and num file printf format specifier from "%-40sXXX"
4398 to "%-39s XXX". The latter will always guarantee a space after the
4399 field while the former will cause them to run together if the field
4400 is 40 of more characters long.
4403 *) Constify the cipher and digest 'method' functions and structures
4404 and modify related functions to take constant EVP_MD and EVP_CIPHER
4408 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4409 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4412 *) Modify EVP_Digest*() routines so they now return values. Although the
4413 internal software routines can never fail additional hardware versions
4417 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4419 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4420 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4423 ERR_R_NESTED_ASN1_ERROR
4425 ERR_R_MISSING_ASN1_EOS
4426 were 4 .. 9, conflicting with
4427 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4429 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4430 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4432 Add new error code 'ERR_R_INTERNAL_ERROR'.
4435 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4439 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4440 sets the subject name for a new request or supersedes the
4441 subject name in a given request. Formats that can be parsed are
4442 'CN=Some Name, OU=myOU, C=IT'
4444 'CN=Some Name/OU=myOU/C=IT'.
4446 Add options '-batch' and '-verbose' to 'openssl req'.
4447 [Massimiliano Pala <madwolf@hackmasters.net>]
4449 *) Introduce the possibility to access global variables through
4450 functions on platform were that's the best way to handle exporting
4451 global variables in shared libraries. To enable this functionality,
4452 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4453 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4454 is normally done by Configure or something similar).
4456 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4457 in the source file (foo.c) like this:
4459 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4460 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4462 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4463 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4465 OPENSSL_DECLARE_GLOBAL(int,foo);
4466 #define foo OPENSSL_GLOBAL_REF(foo)
4467 OPENSSL_DECLARE_GLOBAL(double,bar);
4468 #define bar OPENSSL_GLOBAL_REF(bar)
4470 The #defines are very important, and therefore so is including the
4471 header file everywhere where the defined globals are used.
4473 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4474 of ASN.1 items, but that structure is a bit different.
4476 The largest change is in util/mkdef.pl which has been enhanced with
4477 better and easier to understand logic to choose which symbols should
4478 go into the Windows .def files as well as a number of fixes and code
4479 cleanup (among others, algorithm keywords are now sorted
4480 lexicographically to avoid constant rewrites).
4483 *) In BN_div() keep a copy of the sign of 'num' before writing the
4484 result to 'rm' because if rm==num the value will be overwritten
4485 and produce the wrong result if 'num' is negative: this caused
4486 problems with BN_mod() and BN_nnmod().
4489 *) Function OCSP_request_verify(). This checks the signature on an
4490 OCSP request and verifies the signer certificate. The signer
4491 certificate is just checked for a generic purpose and OCSP request
4495 *) Add OCSP_check_validity() function to check the validity of OCSP
4496 responses. OCSP responses are prepared in real time and may only
4497 be a few seconds old. Simply checking that the current time lies
4498 between thisUpdate and nextUpdate max reject otherwise valid responses
4499 caused by either OCSP responder or client clock inaccuracy. Instead
4500 we allow thisUpdate and nextUpdate to fall within a certain period of
4501 the current time. The age of the response can also optionally be
4502 checked. Two new options -validity_period and -status_age added to
4506 *) If signature or public key algorithm is unrecognized print out its
4507 OID rather that just UNKNOWN.
4510 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4511 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4512 ID to be generated from the issuer certificate alone which can then be
4513 passed to OCSP_id_issuer_cmp().
4516 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4517 ASN1 modules to export functions returning ASN1_ITEM pointers
4518 instead of the ASN1_ITEM structures themselves. This adds several
4519 new macros which allow the underlying ASN1 function/structure to
4520 be accessed transparently. As a result code should not use ASN1_ITEM
4521 references directly (such as &X509_it) but instead use the relevant
4522 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4523 use of the new ASN1 code on platforms where exporting structures
4524 is problematical (for example in shared libraries) but exporting
4525 functions returning pointers to structures is not.
4528 *) Add support for overriding the generation of SSL/TLS session IDs.
4529 These callbacks can be registered either in an SSL_CTX or per SSL.
4530 The purpose of this is to allow applications to control, if they wish,
4531 the arbitrary values chosen for use as session IDs, particularly as it
4532 can be useful for session caching in multiple-server environments. A
4533 command-line switch for testing this (and any client code that wishes
4534 to use such a feature) has been added to "s_server".
4535 [Geoff Thorpe, Lutz Jaenicke]
4537 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4538 of the form '#if defined(...) || defined(...) || ...' and
4539 '#if !defined(...) && !defined(...) && ...'. This also avoids
4540 the growing number of special cases it was previously handling.
4543 *) Make all configuration macros available for application by making
4544 sure they are available in opensslconf.h, by giving them names starting
4545 with "OPENSSL_" to avoid conflicts with other packages and by making
4546 sure e_os2.h will cover all platform-specific cases together with
4548 Additionally, it is now possible to define configuration/platform-
4549 specific names (called "system identities"). In the C code, these
4550 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4551 macro with the name beginning with "OPENSSL_SYS_", which is determined
4552 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
4556 *) New option -set_serial to 'req' and 'x509' this allows the serial
4557 number to use to be specified on the command line. Previously self
4558 signed certificates were hard coded with serial number 0 and the
4559 CA options of 'x509' had to use a serial number in a file which was
4563 *) New options to 'ca' utility to support V2 CRL entry extensions.
4564 Currently CRL reason, invalidity date and hold instruction are
4565 supported. Add new CRL extensions to V3 code and some new objects.
4568 *) New function EVP_CIPHER_CTX_set_padding() this is used to
4569 disable standard block padding (aka PKCS#5 padding) in the EVP
4570 API, which was previously mandatory. This means that the data is
4571 not padded in any way and so the total length much be a multiple
4572 of the block size, otherwise an error occurs.
4575 *) Initial (incomplete) OCSP SSL support.
4578 *) New function OCSP_parse_url(). This splits up a URL into its host,
4579 port and path components: primarily to parse OCSP URLs. New -url
4580 option to ocsp utility.
4583 *) New nonce behavior. The return value of OCSP_check_nonce() now
4584 reflects the various checks performed. Applications can decide
4585 whether to tolerate certain situations such as an absent nonce
4586 in a response when one was present in a request: the ocsp application
4587 just prints out a warning. New function OCSP_add1_basic_nonce()
4588 this is to allow responders to include a nonce in a response even if
4589 the request is nonce-less.
4592 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
4593 skipped when using openssl x509 multiple times on a single input file,
4594 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
4597 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
4598 set string type: to handle setting ASN1_TIME structures. Fix ca
4599 utility to correctly initialize revocation date of CRLs.
4602 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
4603 the clients preferred ciphersuites and rather use its own preferences.
4604 Should help to work around M$ SGC (Server Gated Cryptography) bug in
4605 Internet Explorer by ensuring unchanged hash method during stepup.
4606 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
4609 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
4610 to aes and add a new 'exist' option to print out symbols that don't
4614 *) Additional options to ocsp utility to allow flags to be set and
4615 additional certificates supplied.
4618 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
4619 OCSP client a number of certificate to only verify the response
4623 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
4624 handle the new API. Currently only ECB, CBC modes supported. Add new
4627 Add TLS AES ciphersuites as described in RFC3268, "Advanced
4628 Encryption Standard (AES) Ciphersuites for Transport Layer
4629 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
4630 not enabled by default and were not part of the "ALL" ciphersuite
4631 alias because they were not yet official; they could be
4632 explicitly requested by specifying the "AESdraft" ciphersuite
4633 group alias. In the final release of OpenSSL 0.9.7, the group
4634 alias is called "AES" and is part of "ALL".)
4635 [Ben Laurie, Steve Henson, Bodo Moeller]
4637 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
4638 request to response.
4641 *) Functions for OCSP responders. OCSP_request_onereq_count(),
4642 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
4643 extract information from a certificate request. OCSP_response_create()
4644 creates a response and optionally adds a basic response structure.
4645 OCSP_basic_add1_status() adds a complete single response to a basic
4646 response and returns the OCSP_SINGLERESP structure just added (to allow
4647 extensions to be included for example). OCSP_basic_add1_cert() adds a
4648 certificate to a basic response and OCSP_basic_sign() signs a basic
4649 response with various flags. New helper functions ASN1_TIME_check()
4650 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
4651 (converts ASN1_TIME to GeneralizedTime).
4654 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
4655 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
4656 structure from a certificate. X509_pubkey_digest() digests the public_key
4657 contents: this is used in various key identifiers.
4660 *) Make sk_sort() tolerate a NULL argument.
4661 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
4663 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
4664 passed by the function are trusted implicitly. If any of them signed the
4665 response then it is assumed to be valid and is not verified.
4668 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
4669 to data. This was previously part of the PKCS7 ASN1 code. This
4670 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
4671 [Steve Henson, reported by Kenneth R. Robinette
4672 <support@securenetterm.com>]
4674 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
4675 routines: without these tracing memory leaks is very painful.
4676 Fix leaks in PKCS12 and PKCS7 routines.
4679 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
4680 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
4681 effectively meant GeneralizedTime would never be used. Now it
4682 is initialised to -1 but X509_time_adj() now has to check the value
4683 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
4684 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
4685 [Steve Henson, reported by Kenneth R. Robinette
4686 <support@securenetterm.com>]
4688 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
4689 result in a zero length in the ASN1_INTEGER structure which was
4690 not consistent with the structure when d2i_ASN1_INTEGER() was used
4691 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
4692 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
4693 where it did not print out a minus for negative ASN1_INTEGER.
4696 *) Add summary printout to ocsp utility. The various functions which
4697 convert status values to strings have been renamed to:
4698 OCSP_response_status_str(), OCSP_cert_status_str() and
4699 OCSP_crl_reason_str() and are no longer static. New options
4700 to verify nonce values and to disable verification. OCSP response
4701 printout format cleaned up.
4704 *) Add additional OCSP certificate checks. These are those specified
4705 in RFC2560. This consists of two separate checks: the CA of the
4706 certificate being checked must either be the OCSP signer certificate
4707 or the issuer of the OCSP signer certificate. In the latter case the
4708 OCSP signer certificate must contain the OCSP signing extended key
4709 usage. This check is performed by attempting to match the OCSP
4710 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
4711 in the OCSP_CERTID structures of the response.
4714 *) Initial OCSP certificate verification added to OCSP_basic_verify()
4715 and related routines. This uses the standard OpenSSL certificate
4716 verify routines to perform initial checks (just CA validity) and
4717 to obtain the certificate chain. Then additional checks will be
4718 performed on the chain. Currently the root CA is checked to see
4719 if it is explicitly trusted for OCSP signing. This is used to set
4720 a root CA as a global signing root: that is any certificate that
4721 chains to that CA is an acceptable OCSP signing certificate.
4724 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
4725 extensions from a separate configuration file.
4726 As when reading extensions from the main configuration file,
4727 the '-extensions ...' option may be used for specifying the
4729 [Massimiliano Pala <madwolf@comune.modena.it>]
4731 *) New OCSP utility. Allows OCSP requests to be generated or
4732 read. The request can be sent to a responder and the output
4733 parsed, outputed or printed in text form. Not complete yet:
4734 still needs to check the OCSP response validity.
4737 *) New subcommands for 'openssl ca':
4738 'openssl ca -status <serial>' prints the status of the cert with
4739 the given serial number (according to the index file).
4740 'openssl ca -updatedb' updates the expiry status of certificates
4742 [Massimiliano Pala <madwolf@comune.modena.it>]
4744 *) New '-newreq-nodes' command option to CA.pl. This is like
4745 '-newreq', but calls 'openssl req' with the '-nodes' option
4746 so that the resulting key is not encrypted.
4747 [Damien Miller <djm@mindrot.org>]
4749 *) New configuration for the GNU Hurd.
4750 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
4752 *) Initial code to implement OCSP basic response verify. This
4753 is currently incomplete. Currently just finds the signer's
4754 certificate and verifies the signature on the response.
4757 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4758 value of OPENSSLDIR. This is available via the new '-d' option
4759 to 'openssl version', and is also included in 'openssl version -a'.
4762 *) Allowing defining memory allocation callbacks that will be given
4763 file name and line number information in additional arguments
4764 (a const char* and an int). The basic functionality remains, as
4765 well as the original possibility to just replace malloc(),
4766 realloc() and free() by functions that do not know about these
4767 additional arguments. To register and find out the current
4768 settings for extended allocation functions, the following
4769 functions are provided:
4771 CRYPTO_set_mem_ex_functions
4772 CRYPTO_set_locked_mem_ex_functions
4773 CRYPTO_get_mem_ex_functions
4774 CRYPTO_get_locked_mem_ex_functions
4776 These work the same way as CRYPTO_set_mem_functions and friends.
4777 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4778 extended allocation function is enabled.
4779 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4780 a conventional allocation function is enabled.
4781 [Richard Levitte, Bodo Moeller]
4783 *) Finish off removing the remaining LHASH function pointer casts.
4784 There should no longer be any prototype-casting required when using
4785 the LHASH abstraction, and any casts that remain are "bugs". See
4786 the callback types and macros at the head of lhash.h for details
4787 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4790 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4791 If /dev/[u]random devices are not available or do not return enough
4792 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4794 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4795 /etc/entropy will be queried once each in this sequence, quering stops
4796 when enough entropy was collected without querying more sockets.
4799 *) Change the Unix RAND_poll() variant to be able to poll several
4800 random devices, as specified by DEVRANDOM, until a sufficient amount
4801 of data has been collected. We spend at most 10 ms on each file
4802 (select timeout) and read in non-blocking mode. DEVRANDOM now
4803 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4804 (previously it was just the string "/dev/urandom"), so on typical
4805 platforms the 10 ms delay will never occur.
4806 Also separate out the Unix variant to its own file, rand_unix.c.
4807 For VMS, there's a currently-empty rand_vms.c.
4810 *) Move OCSP client related routines to ocsp_cl.c. These
4811 provide utility functions which an application needing
4812 to issue a request to an OCSP responder and analyse the
4813 response will typically need: as opposed to those which an
4814 OCSP responder itself would need which will be added later.
4816 OCSP_request_sign() signs an OCSP request with an API similar
4817 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4818 response. OCSP_response_get1_basic() extracts basic response
4819 from response. OCSP_resp_find_status(): finds and extracts status
4820 information from an OCSP_CERTID structure (which will be created
4821 when the request structure is built). These are built from lower
4822 level functions which work on OCSP_SINGLERESP structures but
4823 wont normally be used unless the application wishes to examine
4824 extensions in the OCSP response for example.
4826 Replace nonce routines with a pair of functions.
4827 OCSP_request_add1_nonce() adds a nonce value and optionally
4828 generates a random value. OCSP_check_nonce() checks the
4829 validity of the nonce in an OCSP response.
4832 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4833 This doesn't copy the supplied OCSP_CERTID and avoids the
4834 need to free up the newly created id. Change return type
4835 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4836 This can then be used to add extensions to the request.
4837 Deleted OCSP_request_new(), since most of its functionality
4838 is now in OCSP_REQUEST_new() (and the case insensitive name
4839 clash) apart from the ability to set the request name which
4840 will be added elsewhere.
4843 *) Update OCSP API. Remove obsolete extensions argument from
4844 various functions. Extensions are now handled using the new
4845 OCSP extension code. New simple OCSP HTTP function which
4846 can be used to send requests and parse the response.
4849 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4850 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4851 uses the special reorder version of SET OF to sort the attributes
4852 and reorder them to match the encoded order. This resolves a long
4853 standing problem: a verify on a PKCS7 structure just after signing
4854 it used to fail because the attribute order did not match the
4855 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4856 it uses the received order. This is necessary to tolerate some broken
4857 software that does not order SET OF. This is handled by encoding
4858 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4859 to produce the required SET OF.
4862 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4863 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4864 files to get correct declarations of the ASN.1 item variables.
4867 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4868 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4869 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4870 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4871 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4872 ASN1_ITEM and no wrapper functions.
4875 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4876 replace the old function pointer based I/O routines. Change most of
4877 the *_d2i_bio() and *_d2i_fp() functions to use these.
4880 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4881 lines, recognice more "algorithms" that can be deselected, and make
4882 it complain about algorithm deselection that isn't recognised.
4885 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4886 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4887 to use new functions. Add NO_ASN1_OLD which can be set to remove
4888 some old style ASN1 functions: this can be used to determine if old
4889 code will still work when these eventually go away.
4892 *) New extension functions for OCSP structures, these follow the
4893 same conventions as certificates and CRLs.
4896 *) New function X509V3_add1_i2d(). This automatically encodes and
4897 adds an extension. Its behaviour can be customised with various
4898 flags to append, replace or delete. Various wrappers added for
4899 certifcates and CRLs.
4902 *) Fix to avoid calling the underlying ASN1 print routine when
4903 an extension cannot be parsed. Correct a typo in the
4904 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4907 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4908 entries for variables.
4911 *) Add functionality to apps/openssl.c for detecting locking
4912 problems: As the program is single-threaded, all we have
4913 to do is register a locking callback using an array for
4914 storing which locks are currently held by the program.
4917 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4918 SSL_get_ex_data_X509_STORE_idx(), which is used in
4919 ssl_verify_cert_chain() and thus can be called at any time
4920 during TLS/SSL handshakes so that thread-safety is essential.
4921 Unfortunately, the ex_data design is not at all suited
4922 for multi-threaded use, so it probably should be abolished.
4925 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4926 [Broadcom, tweaked and integrated by Geoff Thorpe]
4928 *) Move common extension printing code to new function
4929 X509V3_print_extensions(). Reorganise OCSP print routines and
4930 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4933 *) New function X509_signature_print() to remove duplication in some
4937 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4938 set (this was treated exactly the same as SET OF previously). This
4939 is used to reorder the STACK representing the structure to match the
4940 encoding. This will be used to get round a problem where a PKCS7
4941 structure which was signed could not be verified because the STACK
4942 order did not reflect the encoded order.
4945 *) Reimplement the OCSP ASN1 module using the new code.
4948 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4949 for its ASN1 operations. The old style function pointers still exist
4950 for now but they will eventually go away.
4953 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4954 completely replaces the old ASN1 functionality with a table driven
4955 encoder and decoder which interprets an ASN1_ITEM structure describing
4956 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4957 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4958 has also been converted to the new form.
4961 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4962 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4963 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4964 for negative moduli.
4967 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4968 of not touching the result's sign bit.
4971 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4975 *) Changed the LHASH code to use prototypes for callbacks, and created
4976 macros to declare and implement thin (optionally static) functions
4977 that provide type-safety and avoid function pointer casting for the
4978 type-specific callbacks.
4981 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4983 [Veers Staats <staatsvr@asc.hpc.mil>,
4984 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4986 *) Reformat the FAQ so the different questions and answers can be divided
4987 in sections depending on the subject.
4990 *) Have the zlib compression code load ZLIB.DLL dynamically under
4994 *) New function BN_mod_sqrt for computing square roots modulo a prime
4995 (using the probabilistic Tonelli-Shanks algorithm unless
4996 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4997 be handled deterministically).
4998 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5000 *) Make BN_mod_inverse faster by explicitly handling small quotients
5001 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
5002 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5005 *) New function BN_kronecker.
5008 *) Fix BN_gcd so that it works on negative inputs; the result is
5009 positive unless both parameters are zero.
5010 Previously something reasonably close to an infinite loop was
5011 possible because numbers could be growing instead of shrinking
5012 in the implementation of Euclid's algorithm.
5015 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5016 sign of the number in question.
5018 Fix BN_is_word(a,w) to work correctly for w == 0.
5020 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5021 because its test if the absolute value of 'a' equals 'w'.
5022 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5023 it exists mostly for use in the implementations of BN_is_zero(),
5024 BN_is_one(), and BN_is_word().
5027 *) New function BN_swap.
5030 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5031 the exponentiation functions are more likely to produce reasonable
5032 results on negative inputs.
5035 *) Change BN_mod_mul so that the result is always non-negative.
5036 Previously, it could be negative if one of the factors was negative;
5037 I don't think anyone really wanted that behaviour.
5040 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5041 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5042 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5043 and add new functions:
5052 BN_mod_lshift1_quick
5056 These functions always generate non-negative results.
5058 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5059 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5061 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5062 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5063 be reduced modulo m.
5064 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5067 The following entry accidentily appeared in the CHANGES file
5068 distributed with OpenSSL 0.9.7. The modifications described in
5069 it do *not* apply to OpenSSL 0.9.7.
5071 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5072 was actually never needed) and in BN_mul(). The removal in BN_mul()
5073 required a small change in bn_mul_part_recursive() and the addition
5074 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5075 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5076 bn_sub_words() and bn_add_words() except they take arrays with
5081 *) In 'openssl passwd', verify passwords read from the terminal
5082 unless the '-salt' option is used (which usually means that
5083 verification would just waste user's time since the resulting
5084 hash is going to be compared with some given password hash)
5085 or the new '-noverify' option is used.
5087 This is an incompatible change, but it does not affect
5088 non-interactive use of 'openssl passwd' (passwords on the command
5089 line, '-stdin' option, '-in ...' option) and thus should not
5093 *) Remove all references to RSAref, since there's no more need for it.
5096 *) Make DSO load along a path given through an environment variable
5097 (SHLIB_PATH) with shl_load().
5100 *) Constify the ENGINE code as a result of BIGNUM constification.
5101 Also constify the RSA code and most things related to it. In a
5102 few places, most notable in the depth of the ASN.1 code, ugly
5103 casts back to non-const were required (to be solved at a later
5107 *) Make it so the openssl application has all engines loaded by default.
5110 *) Constify the BIGNUM routines a little more.
5113 *) Add the following functions:
5115 ENGINE_load_cswift()
5117 ENGINE_load_atalla()
5119 ENGINE_load_builtin_engines()
5121 That way, an application can itself choose if external engines that
5122 are built-in in OpenSSL shall ever be used or not. The benefit is
5123 that applications won't have to be linked with libdl or other dso
5124 libraries unless it's really needed.
5126 Changed 'openssl engine' to load all engines on demand.
5127 Changed the engine header files to avoid the duplication of some
5128 declarations (they differed!).
5131 *) 'openssl engine' can now list capabilities.
5134 *) Better error reporting in 'openssl engine'.
5137 *) Never call load_dh_param(NULL) in s_server.
5140 *) Add engine application. It can currently list engines by name and
5141 identity, and test if they are actually available.
5144 *) Improve RPM specification file by forcing symbolic linking and making
5145 sure the installed documentation is also owned by root.root.
5146 [Damien Miller <djm@mindrot.org>]
5148 *) Give the OpenSSL applications more possibilities to make use of
5149 keys (public as well as private) handled by engines.
5152 *) Add OCSP code that comes from CertCo.
5155 *) Add VMS support for the Rijndael code.
5158 *) Added untested support for Nuron crypto accelerator.
5161 *) Add support for external cryptographic devices. This code was
5162 previously distributed separately as the "engine" branch.
5163 [Geoff Thorpe, Richard Levitte]
5165 *) Rework the filename-translation in the DSO code. It is now possible to
5166 have far greater control over how a "name" is turned into a filename
5167 depending on the operating environment and any oddities about the
5168 different shared library filenames on each system.
5171 *) Support threads on FreeBSD-elf in Configure.
5174 *) Fix for SHA1 assembly problem with MASM: it produces
5175 warnings about corrupt line number information when assembling
5176 with debugging information. This is caused by the overlapping
5178 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5181 NCONF_get_number() has no error checking at all. As a replacement,
5182 NCONF_get_number_e() is defined (_e for "error checking") and is
5183 promoted strongly. The old NCONF_get_number is kept around for
5184 binary backward compatibility.
5185 Make it possible for methods to load from something other than a BIO,
5186 by providing a function pointer that is given a name instead of a BIO.
5187 For example, this could be used to load configuration data from an
5191 *) Fix for non blocking accept BIOs. Added new I/O special reason
5192 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5193 with non blocking I/O was not possible because no retry code was
5194 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5198 *) Added the beginnings of Rijndael support.
5201 *) Fix for bug in DirectoryString mask setting. Add support for
5202 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5203 to allow certificate printing to more controllable, additional
5204 'certopt' option to 'x509' to allow new printing options to be
5208 *) Clean old EAY MD5 hack from e_os.h.
5211 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5213 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5214 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5215 [Joe Orton, Steve Henson]
5217 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5219 *) Fix additional bug revealed by the NISCC test suite:
5221 Stop bug triggering large recursion when presented with
5222 certain ASN.1 tags (CVE-2003-0851)
5225 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5227 *) Fix various bugs revealed by running the NISCC test suite:
5229 Stop out of bounds reads in the ASN1 code when presented with
5230 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5232 If verify callback ignores invalid public key errors don't try to check
5233 certificate signature with the NULL public key.
5237 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5238 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5242 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5243 extra data after the compression methods not only for TLS 1.0
5244 but also for SSL 3.0 (as required by the specification).
5245 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5247 *) Change X509_certificate_type() to mark the key as exported/exportable
5248 when it's 512 *bits* long, not 512 bytes.
5251 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5253 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5254 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5255 a protocol version number mismatch like a decryption error
5256 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5259 *) Turn on RSA blinding by default in the default implementation
5260 to avoid a timing attack. Applications that don't want it can call
5261 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5262 They would be ill-advised to do so in most cases.
5263 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5265 *) Change RSA blinding code so that it works when the PRNG is not
5266 seeded (in this case, the secret RSA exponent is abused as
5267 an unpredictable seed -- if it is not unpredictable, there
5268 is no point in blinding anyway). Make RSA blinding thread-safe
5269 by remembering the creator's thread ID in rsa->blinding and
5270 having all other threads use local one-time blinding factors
5271 (this requires more computation than sharing rsa->blinding, but
5272 avoids excessive locking; and if an RSA object is not shared
5273 between threads, blinding will still be very fast).
5276 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5278 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5279 via timing by performing a MAC computation even if incorrrect
5280 block cipher padding has been found. This is a countermeasure
5281 against active attacks where the attacker has to distinguish
5282 between bad padding and a MAC verification error. (CVE-2003-0078)
5284 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5285 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5286 Martin Vuagnoux (EPFL, Ilion)]
5288 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5290 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5291 memory from it's contents. This is done with a counter that will
5292 place alternating values in each byte. This can be used to solve
5293 two issues: 1) the removal of calls to memset() by highly optimizing
5294 compilers, and 2) cleansing with other values than 0, since those can
5295 be read through on certain media, for example a swap space on disk.
5298 *) Bugfix: client side session caching did not work with external caching,
5299 because the session->cipher setting was not restored when reloading
5300 from the external cache. This problem was masked, when
5301 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5302 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5305 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5306 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5307 [Zeev Lieber <zeev-l@yahoo.com>]
5309 *) Undo an undocumented change introduced in 0.9.6e which caused
5310 repeated calls to OpenSSL_add_all_ciphers() and
5311 OpenSSL_add_all_digests() to be ignored, even after calling
5315 *) Change the default configuration reader to deal with last line not
5316 being properly terminated.
5319 *) Change X509_NAME_cmp() so it applies the special rules on handling
5320 DN values that are of type PrintableString, as well as RDNs of type
5321 emailAddress where the value has the type ia5String.
5322 [stefank@valicert.com via Richard Levitte]
5324 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5325 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5326 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5327 the bitwise-OR of the two for use by the majority of applications
5328 wanting this behaviour, and update the docs. The documented
5329 behaviour and actual behaviour were inconsistent and had been
5330 changing anyway, so this is more a bug-fix than a behavioural
5332 [Geoff Thorpe, diagnosed by Nadav Har'El]
5334 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5335 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5338 *) Fix initialization code race conditions in
5339 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5340 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5341 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5342 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5343 ssl2_get_cipher_by_char(),
5344 ssl3_get_cipher_by_char().
5345 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5347 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5348 the cached sessions are flushed, as the remove_cb() might use ex_data
5349 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5350 (see [openssl.org #212]).
5351 [Geoff Thorpe, Lutz Jaenicke]
5353 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5354 length, instead of the encoding length to d2i_ASN1_OBJECT.
5357 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5359 *) [In 0.9.6g-engine release:]
5360 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5361 [Lynn Gazis <lgazis@rainbow.com>]
5363 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5365 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5366 and get fix the header length calculation.
5367 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5368 Alon Kantor <alonk@checkpoint.com> (and others),
5371 *) Use proper error handling instead of 'assertions' in buffer
5372 overflow checks added in 0.9.6e. This prevents DoS (the
5373 assertions could call abort()).
5374 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5376 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5378 *) Add various sanity checks to asn1_get_length() to reject
5379 the ASN1 length bytes if they exceed sizeof(long), will appear
5380 negative or the content length exceeds the length of the
5382 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5384 *) Fix cipher selection routines: ciphers without encryption had no flags
5385 for the cipher strength set and where therefore not handled correctly
5386 by the selection routines (PR #130).
5389 *) Fix EVP_dsa_sha macro.
5393 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5394 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5395 that was added in OpenSSL 0.9.6d.
5397 As the countermeasure turned out to be incompatible with some
5398 broken SSL implementations, the new option is part of SSL_OP_ALL.
5399 SSL_OP_ALL is usually employed when compatibility with weird SSL
5400 implementations is desired (e.g. '-bugs' option to 's_client' and
5401 's_server'), so the new option is automatically set in many
5405 *) Changes in security patch:
5407 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5408 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5409 Air Force Materiel Command, USAF, under agreement number
5412 *) Add various sanity checks to asn1_get_length() to reject
5413 the ASN1 length bytes if they exceed sizeof(long), will appear
5414 negative or the content length exceeds the length of the
5415 supplied buffer. (CVE-2002-0659)
5416 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5418 *) Assertions for various potential buffer overflows, not known to
5420 [Ben Laurie (CHATS)]
5422 *) Various temporary buffers to hold ASCII versions of integers were
5423 too small for 64 bit platforms. (CVE-2002-0655)
5424 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5426 *) Remote buffer overflow in SSL3 protocol - an attacker could
5427 supply an oversized session ID to a client. (CVE-2002-0656)
5428 [Ben Laurie (CHATS)]
5430 *) Remote buffer overflow in SSL2 protocol - an attacker could
5431 supply an oversized client master key. (CVE-2002-0656)
5432 [Ben Laurie (CHATS)]
5434 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5436 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5437 encoded as NULL) with id-dsa-with-sha1.
5438 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5440 *) Check various X509_...() return values in apps/req.c.
5441 [Nils Larsch <nla@trustcenter.de>]
5443 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5444 an end-of-file condition would erronously be flagged, when the CRLF
5445 was just at the end of a processed block. The bug was discovered when
5446 processing data through a buffering memory BIO handing the data to a
5447 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5448 <ptsekov@syntrex.com> and Nedelcho Stanev.
5451 *) Implement a countermeasure against a vulnerability recently found
5452 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5453 before application data chunks to avoid the use of known IVs
5454 with data potentially chosen by the attacker.
5457 *) Fix length checks in ssl3_get_client_hello().
5460 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5461 to prevent ssl3_read_internal() from incorrectly assuming that
5462 ssl3_read_bytes() found application data while handshake
5463 processing was enabled when in fact s->s3->in_read_app_data was
5464 merely automatically cleared during the initial handshake.
5465 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5467 *) Fix object definitions for Private and Enterprise: they were not
5468 recognized in their shortname (=lowercase) representation. Extend
5469 obj_dat.pl to issue an error when using undefined keywords instead
5470 of silently ignoring the problem (Svenning Sorensen
5471 <sss@sss.dnsalias.net>).
5474 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5475 generators, i.e. generators other than 2 and 5. (Previously, the
5476 code did not properly initialise the 'add' and 'rem' values to
5477 BN_generate_prime().)
5479 In the new general case, we do not insist that 'generator' is
5480 actually a primitive root: This requirement is rather pointless;
5481 a generator of the order-q subgroup is just as good, if not
5485 *) Map new X509 verification errors to alerts. Discovered and submitted by
5486 Tom Wu <tom@arcot.com>.
5489 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
5490 returning non-zero before the data has been completely received
5491 when using non-blocking I/O.
5492 [Bodo Moeller; problem pointed out by John Hughes]
5494 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
5495 [Ben Laurie, Lutz Jaenicke]
5497 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
5498 Yoram Zahavi <YoramZ@gilian.com>).
5501 *) Add information about CygWin 1.3 and on, and preserve proper
5502 configuration for the versions before that.
5503 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5505 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
5506 check whether we deal with a copy of a session and do not delete from
5507 the cache in this case. Problem reported by "Izhar Shoshani Levi"
5508 <izhar@checkpoint.com>.
5511 *) Do not store session data into the internal session cache, if it
5512 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
5513 flag is set). Proposed by Aslam <aslam@funk.com>.
5516 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
5520 *) [In 0.9.6d-engine release:]
5521 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5522 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5524 *) Add the configuration target linux-s390x.
5525 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
5527 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
5528 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
5529 variable as an indication that a ClientHello message has been
5530 received. As the flag value will be lost between multiple
5531 invocations of ssl3_accept when using non-blocking I/O, the
5532 function may not be aware that a handshake has actually taken
5533 place, thus preventing a new session from being added to the
5536 To avoid this problem, we now set s->new_session to 2 instead of
5537 using a local variable.
5538 [Lutz Jaenicke, Bodo Moeller]
5540 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
5541 if the SSL_R_LENGTH_MISMATCH error is detected.
5542 [Geoff Thorpe, Bodo Moeller]
5544 *) New 'shared_ldflag' column in Configure platform table.
5547 *) Fix EVP_CIPHER_mode macro.
5548 ["Dan S. Camper" <dan@bti.net>]
5550 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
5551 type, we must throw them away by setting rr->length to 0.
5552 [D P Chang <dpc@qualys.com>]
5554 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
5556 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
5557 <Dominikus.Scherkl@biodata.com>. (The previous implementation
5558 worked incorrectly for those cases where range = 10..._2 and
5559 3*range is two bits longer than range.)
5562 *) Only add signing time to PKCS7 structures if it is not already
5566 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
5567 OBJ_ld_ce should be OBJ_id_ce.
5568 Also some ip-pda OIDs in crypto/objects/objects.txt were
5569 incorrect (cf. RFC 3039).
5570 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
5572 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
5573 returns early because it has nothing to do.
5574 [Andy Schneider <andy.schneider@bjss.co.uk>]
5576 *) [In 0.9.6c-engine release:]
5577 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
5578 [Andy Schneider <andy.schneider@bjss.co.uk>]
5580 *) [In 0.9.6c-engine release:]
5581 Add support for Cryptographic Appliance's keyserver technology.
5582 (Use engine 'keyclient')
5583 [Cryptographic Appliances and Geoff Thorpe]
5585 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
5586 is called via tools/c89.sh because arguments have to be
5587 rearranged (all '-L' options must appear before the first object
5589 [Richard Shapiro <rshapiro@abinitio.com>]
5591 *) [In 0.9.6c-engine release:]
5592 Add support for Broadcom crypto accelerator cards, backported
5594 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
5596 *) [In 0.9.6c-engine release:]
5597 Add support for SureWare crypto accelerator cards from
5598 Baltimore Technologies. (Use engine 'sureware')
5599 [Baltimore Technologies and Mark Cox]
5601 *) [In 0.9.6c-engine release:]
5602 Add support for crypto accelerator cards from Accelerated
5603 Encryption Processing, www.aep.ie. (Use engine 'aep')
5604 [AEP Inc. and Mark Cox]
5606 *) Add a configuration entry for gcc on UnixWare.
5607 [Gary Benson <gbenson@redhat.com>]
5609 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
5610 messages are stored in a single piece (fixed-length part and
5611 variable-length part combined) and fix various bugs found on the way.
5614 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
5615 instead. BIO_gethostbyname() does not know what timeouts are
5616 appropriate, so entries would stay in cache even when they have
5618 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
5620 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
5621 faced with a pathologically small ClientHello fragment that does
5622 not contain client_version: Instead of aborting with an error,
5623 simply choose the highest available protocol version (i.e.,
5624 TLS 1.0 unless it is disabled). In practice, ClientHello
5625 messages are never sent like this, but this change gives us
5626 strictly correct behaviour at least for TLS.
5629 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
5630 never resets s->method to s->ctx->method when called from within
5631 one of the SSL handshake functions.
5632 [Bodo Moeller; problem pointed out by Niko Baric]
5634 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
5635 (sent using the client's version number) if client_version is
5636 smaller than the protocol version in use. Also change
5637 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
5638 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
5639 the client will at least see that alert.
5642 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
5646 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
5647 client receives HelloRequest while in a handshake.
5648 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
5650 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
5651 should end in 'break', not 'goto end' which circuments various
5652 cleanups done in state SSL_ST_OK. But session related stuff
5653 must be disabled for SSL_ST_OK in the case that we just sent a
5656 Also avoid some overhead by not calling ssl_init_wbio_buffer()
5657 before just sending a HelloRequest.
5658 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
5660 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
5661 reveal whether illegal block cipher padding was found or a MAC
5662 verification error occured. (Neither SSLerr() codes nor alerts
5663 are directly visible to potential attackers, but the information
5664 may leak via logfiles.)
5666 Similar changes are not required for the SSL 2.0 implementation
5667 because the number of padding bytes is sent in clear for SSL 2.0,
5668 and the extra bytes are just ignored. However ssl/s2_pkt.c
5669 failed to verify that the purported number of padding bytes is in
5673 *) Add OpenUNIX-8 support including shared libraries
5674 (Boyd Lynn Gerber <gerberb@zenez.com>).
5677 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
5678 'wristwatch attack' using huge encoding parameters (cf.
5679 James H. Manger's CRYPTO 2001 paper). Note that the
5680 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
5681 encoding parameters and hence was not vulnerable.
5684 *) BN_sqr() bug fix.
5685 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
5687 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
5688 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
5689 followed by modular reduction.
5690 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
5692 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
5693 equivalent based on BN_pseudo_rand() instead of BN_rand().
5696 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
5697 This function was broken, as the check for a new client hello message
5698 to handle SGC did not allow these large messages.
5699 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
5702 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
5705 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
5706 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
5709 *) Rework the configuration and shared library support for Tru64 Unix.
5710 The configuration part makes use of modern compiler features and
5711 still retains old compiler behavior for those that run older versions
5712 of the OS. The shared library support part includes a variant that
5713 uses the RPATH feature, and is available through the special
5714 configuration target "alpha-cc-rpath", which will never be selected
5716 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
5718 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
5719 with the same message size as in ssl3_get_certificate_request().
5720 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
5721 messages might inadvertently be reject as too long.
5722 [Petr Lampa <lampa@fee.vutbr.cz>]
5724 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
5727 *) Modified SSL library such that the verify_callback that has been set
5728 specificly for an SSL object with SSL_set_verify() is actually being
5729 used. Before the change, a verify_callback set with this function was
5730 ignored and the verify_callback() set in the SSL_CTX at the time of
5731 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
5732 to allow the necessary settings.
5735 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
5736 explicitly to NULL, as at least on Solaris 8 this seems not always to be
5737 done automatically (in contradiction to the requirements of the C
5738 standard). This made problems when used from OpenSSH.
5741 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
5742 dh->length and always used
5744 BN_rand_range(priv_key, dh->p).
5746 BN_rand_range() is not necessary for Diffie-Hellman, and this
5747 specific range makes Diffie-Hellman unnecessarily inefficient if
5748 dh->length (recommended exponent length) is much smaller than the
5749 length of dh->p. We could use BN_rand_range() if the order of
5750 the subgroup was stored in the DH structure, but we only have
5755 BN_rand(priv_key, l, ...)
5757 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5763 RSA_eay_public_encrypt
5764 RSA_eay_private_decrypt
5765 RSA_eay_private_encrypt (signing)
5766 RSA_eay_public_decrypt (signature verification)
5768 (default implementations for RSA_public_encrypt,
5769 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5770 always reject numbers >= n.
5773 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5774 to synchronize access to 'locking_thread'. This is necessary on
5775 systems where access to 'locking_thread' (an 'unsigned long'
5776 variable) is not atomic.
5779 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5780 *before* setting the 'crypto_lock_rand' flag. The previous code had
5781 a race condition if 0 is a valid thread ID.
5782 [Travis Vitek <vitek@roguewave.com>]
5784 *) Add support for shared libraries under Irix.
5785 [Albert Chin-A-Young <china@thewrittenword.com>]
5787 *) Add configuration option to build on Linux on both big-endian and
5789 [Ralf Baechle <ralf@uni-koblenz.de>]
5791 *) Add the possibility to create shared libraries on HP-UX.
5794 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5796 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5797 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5798 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5799 PRNG state recovery was possible based on the output of
5800 one PRNG request appropriately sized to gain knowledge on
5801 'md' followed by enough consecutive 1-byte PRNG requests
5802 to traverse all of 'state'.
5804 1. When updating 'md_local' (the current thread's copy of 'md')
5805 during PRNG output generation, hash all of the previous
5806 'md_local' value, not just the half used for PRNG output.
5808 2. Make the number of bytes from 'state' included into the hash
5809 independent from the number of PRNG bytes requested.
5811 The first measure alone would be sufficient to avoid
5812 Markku-Juhani's attack. (Actually it had never occurred
5813 to me that the half of 'md_local' used for chaining was the
5814 half from which PRNG output bytes were taken -- I had always
5815 assumed that the secret half would be used.) The second
5816 measure makes sure that additional data from 'state' is never
5817 mixed into 'md_local' in small portions; this heuristically
5818 further strengthens the PRNG.
5821 *) Fix crypto/bn/asm/mips3.s.
5824 *) When only the key is given to "enc", the IV is undefined. Print out
5825 an error message in this case.
5828 *) Handle special case when X509_NAME is empty in X509 printing routines.
5831 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5832 positive and less than q.
5835 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5836 used: it isn't thread safe and the add_lock_callback should handle
5838 [Paul Rose <Paul.Rose@bridge.com>]
5840 *) Verify that incoming data obeys the block size in
5841 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5845 [Ulf Möller, Bodo Möller]
5847 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5848 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5849 when fixing the server behaviour for backwards-compatible 'client
5850 hello' messages. (Note that the attack is impractical against
5851 SSL 3.0 and TLS 1.0 anyway because length and version checking
5852 means that the probability of guessing a valid ciphertext is
5853 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5856 Before 0.9.5, the countermeasure (hide the error by generating a
5857 random 'decryption result') did not work properly because
5858 ERR_clear_error() was missing, meaning that SSL_get_error() would
5859 detect the supposedly ignored error.
5861 Both problems are now fixed.
5864 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5865 (previously it was 1024).
5868 *) Fix for compatibility mode trust settings: ignore trust settings
5869 unless some valid trust or reject settings are present.
5872 *) Fix for blowfish EVP: its a variable length cipher.
5875 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5876 parameters in DSA public key structures and return an error in the
5877 DSA routines if parameters are absent.
5880 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5881 in the current directory if neither $RANDFILE nor $HOME was set.
5882 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5883 caused some confusion to Windows users who haven't defined $HOME.
5884 Thus RAND_file_name() is changed again: e_os.h can define a
5885 DEFAULT_HOME, which will be used if $HOME is not set.
5886 For Windows, we use "C:"; on other platforms, we still require
5887 environment variables.
5889 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5890 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5891 having multiple threads call RAND_poll() concurrently.
5894 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5895 combination of a flag and a thread ID variable.
5896 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5897 flag), *other* threads can enter ssleay_add_bytes without obeying
5898 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5899 that they do not hold after the first thread unsets add_do_not_lock).
5902 *) Change bctest again: '-x' expressions are not available in all
5906 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5908 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5909 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5911 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5912 the default extension for executables, if any. Also, make the perl
5913 scripts that use symlink() to test if it really exists and use "cp"
5914 if it doesn't. All this made OpenSSL compilable and installable in
5918 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5919 If SEQUENCE is length is indefinite just set c->slen to the total
5920 amount of data available.
5921 [Steve Henson, reported by shige@FreeBSD.org]
5922 [This change does not apply to 0.9.7.]
5924 *) Change bctest to avoid here-documents inside command substitution
5925 (workaround for FreeBSD /bin/sh bug).
5926 For compatibility with Ultrix, avoid shell functions (introduced
5927 in the bctest version that searches along $PATH).
5930 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5931 with des_encrypt() defined on some operating systems, like Solaris
5935 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5936 On the Importance of Eliminating Errors in Cryptographic
5937 Computations, J. Cryptology 14 (2001) 2, 101-119,
5938 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5941 *) MIPS assembler BIGNUM division bug fix.
5944 *) Disabled incorrect Alpha assembler code.
5947 *) Fix PKCS#7 decode routines so they correctly update the length
5948 after reading an EOC for the EXPLICIT tag.
5950 [This change does not apply to 0.9.7.]
5952 *) Fix bug in PKCS#12 key generation routines. This was triggered
5953 if a 3DES key was generated with a 0 initial byte. Include
5954 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5955 (but broken) behaviour.
5958 *) Enhance bctest to search for a working bc along $PATH and print
5960 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5962 *) Fix memory leaks in err.c: free err_data string if necessary;
5963 don't write to the wrong index in ERR_set_error_data.
5966 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5970 *) Replace rdtsc with _emit statements for VC++ version 5.
5971 [Jeremy Cooper <jeremy@baymoo.org>]
5973 *) Make it possible to reuse SSLv2 sessions.
5976 *) In copy_email() check for >= 0 as a return value for
5977 X509_NAME_get_index_by_NID() since 0 is a valid index.
5978 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5980 *) Avoid coredump with unsupported or invalid public keys by checking if
5981 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5982 PKCS7_verify() fails with non detached data.
5985 *) Don't use getenv in library functions when run as setuid/setgid.
5986 New function OPENSSL_issetugid().
5989 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5990 due to incorrect handling of multi-threading:
5992 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5994 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5996 3. Count how many times MemCheck_off() has been called so that
5997 nested use can be treated correctly. This also avoids
5998 inband-signalling in the previous code (which relied on the
5999 assumption that thread ID 0 is impossible).
6002 *) Add "-rand" option also to s_client and s_server.
6005 *) Fix CPU detection on Irix 6.x.
6006 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6007 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6009 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6012 [This change does not apply to 0.9.7.]
6014 *) Use the cached encoding of an X509_NAME structure rather than
6015 copying it. This is apparently the reason for the libsafe "errors"
6016 but the code is actually correct.
6019 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6020 Bleichenbacher's DSA attack.
6021 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6022 to be set and top=0 forces the highest bit to be set; top=-1 is new
6023 and leaves the highest bit random.
6024 [Ulf Moeller, Bodo Moeller]
6026 *) In the NCONF_...-based implementations for CONF_... queries
6027 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6028 a temporary CONF structure with the data component set to NULL
6029 (which gives segmentation faults in lh_retrieve).
6030 Instead, use NULL for the CONF pointer in CONF_get_string and
6031 CONF_get_number (which may use environment variables) and directly
6032 return NULL from CONF_get_section.
6035 *) Fix potential buffer overrun for EBCDIC.
6038 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6039 keyUsage if basicConstraints absent for a CA.
6042 *) Make SMIME_write_PKCS7() write mail header values with a format that
6043 is more generally accepted (no spaces before the semicolon), since
6044 some programs can't parse those values properly otherwise. Also make
6045 sure BIO's that break lines after each write do not create invalid
6049 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6050 macros previously used would not encode an empty SEQUENCE OF
6051 and break the signature.
6053 [This change does not apply to 0.9.7.]
6055 *) Zero the premaster secret after deriving the master secret in
6059 *) Add some EVP_add_digest_alias registrations (as found in
6060 OpenSSL_add_all_digests()) to SSL_library_init()
6061 aka OpenSSL_add_ssl_algorithms(). This provides improved
6062 compatibility with peers using X.509 certificates
6063 with unconventional AlgorithmIdentifier OIDs.
6066 *) Fix for Irix with NO_ASM.
6067 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6069 *) ./config script fixes.
6070 [Ulf Moeller, Richard Levitte]
6072 *) Fix 'openssl passwd -1'.
6075 *) Change PKCS12_key_gen_asc() so it can cope with non null
6076 terminated strings whose length is passed in the passlen
6077 parameter, for example from PEM callbacks. This was done
6078 by adding an extra length parameter to asc2uni().
6079 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6081 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6082 call failed, free the DSA structure.
6085 *) Fix to uni2asc() to cope with zero length Unicode strings.
6086 These are present in some PKCS#12 files.
6089 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6090 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6091 when writing a 32767 byte record.
6092 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6094 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6095 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6097 (RSA objects have a reference count access to which is protected
6098 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6099 so they are meant to be shared between threads.)
6100 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6101 "Reddie, Steven" <Steven.Reddie@ca.com>]
6103 *) Fix a deadlock in CRYPTO_mem_leaks().
6106 *) Use better test patterns in bntest.
6109 *) rand_win.c fix for Borland C.
6112 *) BN_rshift bugfix for n == 0.
6115 *) Add a 'bctest' script that checks for some known 'bc' bugs
6116 so that 'make test' does not abort just because 'bc' is broken.
6119 *) Store verify_result within SSL_SESSION also for client side to
6120 avoid potential security hole. (Re-used sessions on the client side
6121 always resulted in verify_result==X509_V_OK, not using the original
6122 result of the server certificate verification.)
6125 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6126 SSL3_RT_APPLICATION_DATA, return 0.
6127 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6131 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6132 releases, have been re-implemented by renaming the previous
6133 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6134 and ssl3_read_internal, respectively, and adding 'peek' parameters
6135 to them. The new ssl[23]_{read,peek} functions are calls to
6136 ssl[23]_read_internal with the 'peek' flag set appropriately.
6137 A 'peek' parameter has also been added to ssl3_read_bytes, which
6138 does the actual work for ssl3_read_internal.
6141 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6142 the method-specific "init()" handler. Also clean up ex_data after
6143 calling the method-specific "finish()" handler. Previously, this was
6144 happening the other way round.
6147 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6148 The previous value, 12, was not always sufficient for BN_mod_exp().
6151 *) Make sure that shared libraries get the internal name engine with
6152 the full version number and not just 0. This should mark the
6153 shared libraries as not backward compatible. Of course, this should
6154 be changed again when we can guarantee backward binary compatibility.
6157 *) Fix typo in get_cert_by_subject() in by_dir.c
6158 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6160 *) Rework the system to generate shared libraries:
6162 - Make note of the expected extension for the shared libraries and
6163 if there is a need for symbolic links from for example libcrypto.so.0
6164 to libcrypto.so.0.9.7. There is extended info in Configure for
6167 - Make as few rebuilds of the shared libraries as possible.
6169 - Still avoid linking the OpenSSL programs with the shared libraries.
6171 - When installing, install the shared libraries separately from the
6175 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6177 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6178 and not in SSL_clear because the latter is also used by the
6179 accept/connect functions; previously, the settings made by
6180 SSL_set_read_ahead would be lost during the handshake.
6181 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6183 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6184 Previously, it would create entries for disableed algorithms no
6188 *) Added several new manual pages for SSL_* function.
6191 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6193 *) In ssl23_get_client_hello, generate an error message when faced
6194 with an initial SSL 3.0/TLS record that is too small to contain the
6195 first two bytes of the ClientHello message, i.e. client_version.
6196 (Note that this is a pathologic case that probably has never happened
6197 in real life.) The previous approach was to use the version number
6198 from the record header as a substitute; but our protocol choice
6199 should not depend on that one because it is not authenticated
6200 by the Finished messages.
6203 *) More robust randomness gathering functions for Windows.
6204 [Jeffrey Altman <jaltman@columbia.edu>]
6206 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6207 not set then we don't setup the error code for issuer check errors
6208 to avoid possibly overwriting other errors which the callback does
6209 handle. If an application does set the flag then we assume it knows
6210 what it is doing and can handle the new informational codes
6214 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6215 a general "ANY" type, as such it should be able to decode anything
6216 including tagged types. However it didn't check the class so it would
6217 wrongly interpret tagged types in the same way as their universal
6218 counterpart and unknown types were just rejected. Changed so that the
6219 tagged and unknown types are handled in the same way as a SEQUENCE:
6220 that is the encoding is stored intact. There is also a new type
6221 "V_ASN1_OTHER" which is used when the class is not universal, in this
6222 case we have no idea what the actual type is so we just lump them all
6226 *) On VMS, stdout may very well lead to a file that is written to
6227 in a record-oriented fashion. That means that every write() will
6228 write a separate record, which will be read separately by the
6229 programs trying to read from it. This can be very confusing.
6231 The solution is to put a BIO filter in the way that will buffer
6232 text until a linefeed is reached, and then write everything a
6233 line at a time, so every record written will be an actual line,
6234 not chunks of lines and not (usually doesn't happen, but I've
6235 seen it once) several lines in one record. BIO_f_linebuffer() is
6238 Currently, it's a VMS-only method, because that's where it has
6239 been tested well enough.
6242 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6243 it can return incorrect results.
6244 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6245 but it was in 0.9.6-beta[12].)
6248 *) Disable the check for content being present when verifying detached
6249 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6250 include zero length content when signing messages.
6253 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6254 BIO_ctrl (for BIO pairs).
6257 *) Add DSO method for VMS.
6260 *) Bug fix: Montgomery multiplication could produce results with the
6264 *) Add RPM specification openssl.spec and modify it to build three
6265 packages. The default package contains applications, application
6266 documentation and run-time libraries. The devel package contains
6267 include files, static libraries and function documentation. The
6268 doc package contains the contents of the doc directory. The original
6269 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6272 *) Add a large number of documentation files for many SSL routines.
6273 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6275 *) Add a configuration entry for Sony News 4.
6276 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6278 *) Don't set the two most significant bits to one when generating a
6279 random number < q in the DSA library.
6282 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6283 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6284 the underlying transport is blocking) if a handshake took place.
6285 (The default behaviour is needed by applications such as s_client
6286 and s_server that use select() to determine when to use SSL_read;
6287 but for applications that know in advance when to expect data, it
6288 just makes things more complicated.)
6291 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6295 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6296 work better on such systems.
6297 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6299 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6300 Update PKCS12_parse() so it copies the friendlyName and the
6301 keyid to the certificates aux info.
6304 *) Fix bug in PKCS7_verify() which caused an infinite loop
6305 if there was more than one signature.
6306 [Sven Uszpelkat <su@celocom.de>]
6308 *) Major change in util/mkdef.pl to include extra information
6309 about each symbol, as well as presentig variables as well
6310 as functions. This change means that there's n more need
6311 to rebuild the .num files when some algorithms are excluded.
6314 *) Allow the verify time to be set by an application,
6315 rather than always using the current time.
6318 *) Phase 2 verify code reorganisation. The certificate
6319 verify code now looks up an issuer certificate by a
6320 number of criteria: subject name, authority key id
6321 and key usage. It also verifies self signed certificates
6322 by the same criteria. The main comparison function is
6323 X509_check_issued() which performs these checks.
6325 Lot of changes were necessary in order to support this
6326 without completely rewriting the lookup code.
6328 Authority and subject key identifier are now cached.
6330 The LHASH 'certs' is X509_STORE has now been replaced
6331 by a STACK_OF(X509_OBJECT). This is mainly because an
6332 LHASH can't store or retrieve multiple objects with
6333 the same hash value.
6335 As a result various functions (which were all internal
6336 use only) have changed to handle the new X509_STORE
6337 structure. This will break anything that messed round
6338 with X509_STORE internally.
6340 The functions X509_STORE_add_cert() now checks for an
6341 exact match, rather than just subject name.
6343 The X509_STORE API doesn't directly support the retrieval
6344 of multiple certificates matching a given criteria, however
6345 this can be worked round by performing a lookup first
6346 (which will fill the cache with candidate certificates)
6347 and then examining the cache for matches. This is probably
6348 the best we can do without throwing out X509_LOOKUP
6349 entirely (maybe later...).
6351 The X509_VERIFY_CTX structure has been enhanced considerably.
6353 All certificate lookup operations now go via a get_issuer()
6354 callback. Although this currently uses an X509_STORE it
6355 can be replaced by custom lookups. This is a simple way
6356 to bypass the X509_STORE hackery necessary to make this
6357 work and makes it possible to use more efficient techniques
6358 in future. A very simple version which uses a simple
6359 STACK for its trusted certificate store is also provided
6360 using X509_STORE_CTX_trusted_stack().
6362 The verify_cb() and verify() callbacks now have equivalents
6363 in the X509_STORE_CTX structure.
6365 X509_STORE_CTX also has a 'flags' field which can be used
6366 to customise the verify behaviour.
6369 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6370 excludes S/MIME capabilities.
6373 *) When a certificate request is read in keep a copy of the
6374 original encoding of the signed data and use it when outputing
6375 again. Signatures then use the original encoding rather than
6376 a decoded, encoded version which may cause problems if the
6377 request is improperly encoded.
6380 *) For consistency with other BIO_puts implementations, call
6381 buffer_write(b, ...) directly in buffer_puts instead of calling
6384 In BIO_puts, increment b->num_write as in BIO_write.
6385 [Peter.Sylvester@EdelWeb.fr]
6387 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6388 BN_zero, we may not return a BIGNUM with an array consisting of
6392 *) Avoid calling abort() from within the library when problems are
6393 detected, except if preprocessor symbols have been defined
6394 (such as REF_CHECK, BN_DEBUG etc.).
6397 *) New openssl application 'rsautl'. This utility can be
6398 used for low level RSA operations. DER public key
6399 BIO/fp routines also added.
6402 *) New Configure entry and patches for compiling on QNX 4.
6403 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6405 *) A demo state-machine implementation was sponsored by
6406 Nuron (http://www.nuron.com/) and is now available in
6407 demos/state_machine.
6410 *) New options added to the 'dgst' utility for signature
6411 generation and verification.
6414 *) Unrecognized PKCS#7 content types are now handled via a
6415 catch all ASN1_TYPE structure. This allows unsupported
6416 types to be stored as a "blob" and an application can
6417 encode and decode it manually.
6420 *) Fix various signed/unsigned issues to make a_strex.c
6422 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6424 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6425 length if passed a buffer. ASN1_INTEGER_to_BN failed
6426 if passed a NULL BN and its argument was negative.
6427 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6429 *) Modification to PKCS#7 encoding routines to output definite
6430 length encoding. Since currently the whole structures are in
6431 memory there's not real point in using indefinite length
6432 constructed encoding. However if OpenSSL is compiled with
6433 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6436 *) Added BIO_vprintf() and BIO_vsnprintf().
6439 *) Added more prefixes to parse for in the the strings written
6440 through a logging bio, to cover all the levels that are available
6441 through syslog. The prefixes are now:
6443 PANIC, EMERG, EMR => LOG_EMERG
6444 ALERT, ALR => LOG_ALERT
6445 CRIT, CRI => LOG_CRIT
6446 ERROR, ERR => LOG_ERR
6447 WARNING, WARN, WAR => LOG_WARNING
6448 NOTICE, NOTE, NOT => LOG_NOTICE
6449 INFO, INF => LOG_INFO
6450 DEBUG, DBG => LOG_DEBUG
6452 and as before, if none of those prefixes are present at the
6453 beginning of the string, LOG_ERR is chosen.
6455 On Win32, the LOG_* levels are mapped according to this:
6457 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6458 LOG_WARNING => EVENTLOG_WARNING_TYPE
6459 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6463 *) Made it possible to reconfigure with just the configuration
6464 argument "reconf" or "reconfigure". The command line arguments
6465 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6466 and are retrieved from there when reconfiguring.
6470 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6472 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6475 *) The obj_dat.pl script was messing up the sorting of object
6476 names. The reason was that it compared the quoted version
6477 of strings as a result "OCSP" > "OCSP Signing" because
6478 " > SPACE. Changed script to store unquoted versions of
6479 names and add quotes on output. It was also omitting some
6480 names from the lookup table if they were given a default
6481 value (that is if SN is missing it is given the same
6482 value as LN and vice versa), these are now added on the
6483 grounds that if an object has a name we should be able to
6484 look it up. Finally added warning output when duplicate
6485 short or long names are found.
6488 *) Changes needed for Tandem NSK.
6489 [Scott Uroff <scott@xypro.com>]
6491 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
6492 RSA_padding_check_SSLv23(), special padding was never detected
6493 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
6494 version rollback attacks was not effective.
6496 In s23_clnt.c, don't use special rollback-attack detection padding
6497 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
6498 client; similarly, in s23_srvr.c, don't do the rollback check if
6499 SSL 2.0 is the only protocol enabled in the server.
6502 *) Make it possible to get hexdumps of unprintable data with 'openssl
6503 asn1parse'. By implication, the functions ASN1_parse_dump() and
6504 BIO_dump_indent() are added.
6507 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
6508 these print out strings and name structures based on various
6509 flags including RFC2253 support and proper handling of
6510 multibyte characters. Added options to the 'x509' utility
6511 to allow the various flags to be set.
6514 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
6515 Also change the functions X509_cmp_current_time() and
6516 X509_gmtime_adj() work with an ASN1_TIME structure,
6517 this will enable certificates using GeneralizedTime in validity
6518 dates to be checked.
6521 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
6522 negative public key encodings) on by default,
6523 NO_NEG_PUBKEY_BUG can be set to disable it.
6526 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
6527 content octets. An i2c_ASN1_OBJECT is unnecessary because
6528 the encoding can be trivially obtained from the structure.
6531 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
6532 not read locks (CRYPTO_r_[un]lock).
6535 *) A first attempt at creating official support for shared
6536 libraries through configuration. I've kept it so the
6537 default is static libraries only, and the OpenSSL programs
6538 are always statically linked for now, but there are
6539 preparations for dynamic linking in place.
6540 This has been tested on Linux and Tru64.
6543 *) Randomness polling function for Win9x, as described in:
6544 Peter Gutmann, Software Generation of Practically Strong
6548 *) Fix so PRNG is seeded in req if using an already existing
6552 *) New options to smime application. -inform and -outform
6553 allow alternative formats for the S/MIME message including
6554 PEM and DER. The -content option allows the content to be
6555 specified separately. This should allow things like Netscape
6556 form signing output easier to verify.
6559 *) Fix the ASN1 encoding of tags using the 'long form'.
6562 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
6563 STRING types. These convert content octets to and from the
6564 underlying type. The actual tag and length octets are
6565 already assumed to have been read in and checked. These
6566 are needed because all other string types have virtually
6567 identical handling apart from the tag. By having versions
6568 of the ASN1 functions that just operate on content octets
6569 IMPLICIT tagging can be handled properly. It also allows
6570 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
6571 and ASN1_INTEGER are identical apart from the tag.
6574 *) Change the handling of OID objects as follows:
6576 - New object identifiers are inserted in objects.txt, following
6577 the syntax given in objects.README.
6578 - objects.pl is used to process obj_mac.num and create a new
6580 - obj_dat.pl is used to create a new obj_dat.h, using the data in
6583 This is currently kind of a hack, and the perl code in objects.pl
6584 isn't very elegant, but it works as I intended. The simplest way
6585 to check that it worked correctly is to look in obj_dat.h and
6586 check the array nid_objs and make sure the objects haven't moved
6587 around (this is important!). Additions are OK, as well as
6588 consistent name changes.
6591 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
6594 *) Addition of the command line parameter '-rand file' to 'openssl req'.
6595 The given file adds to whatever has already been seeded into the
6596 random pool through the RANDFILE configuration file option or
6597 environment variable, or the default random state file.
6600 *) mkstack.pl now sorts each macro group into lexical order.
6601 Previously the output order depended on the order the files
6602 appeared in the directory, resulting in needless rewriting
6606 *) Patches to make OpenSSL compile under Win32 again. Mostly
6607 work arounds for the VC++ problem that it treats func() as
6608 func(void). Also stripped out the parts of mkdef.pl that
6609 added extra typesafe functions: these no longer exist.
6612 *) Reorganisation of the stack code. The macros are now all
6613 collected in safestack.h . Each macro is defined in terms of
6614 a "stack macro" of the form SKM_<name>(type, a, b). The
6615 DEBUG_SAFESTACK is now handled in terms of function casts,
6616 this has the advantage of retaining type safety without the
6617 use of additional functions. If DEBUG_SAFESTACK is not defined
6618 then the non typesafe macros are used instead. Also modified the
6619 mkstack.pl script to handle the new form. Needs testing to see
6620 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
6621 the default if no major problems. Similar behaviour for ASN1_SET_OF
6622 and PKCS12_STACK_OF.
6625 *) When some versions of IIS use the 'NET' form of private key the
6626 key derivation algorithm is different. Normally MD5(password) is
6627 used as a 128 bit RC4 key. In the modified case
6628 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
6629 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
6630 as the old Netscape_RSA functions except they have an additional
6631 'sgckey' parameter which uses the modified algorithm. Also added
6632 an -sgckey command line option to the rsa utility. Thanks to
6633 Adrian Peck <bertie@ncipher.com> for posting details of the modified
6634 algorithm to openssl-dev.
6637 *) The evp_local.h macros were using 'c.##kname' which resulted in
6638 invalid expansion on some systems (SCO 5.0.5 for example).
6639 Corrected to 'c.kname'.
6640 [Phillip Porch <root@theporch.com>]
6642 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
6643 a STACK of email addresses from a certificate or request, these look
6644 in the subject name and the subject alternative name extensions and
6645 omit any duplicate addresses.
6648 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
6649 This makes DSA verification about 2 % faster.
6652 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
6653 (meaning that now 2^5 values will be precomputed, which is only 4 KB
6654 plus overhead for 1024 bit moduli).
6655 This makes exponentiations about 0.5 % faster for 1024 bit
6656 exponents (as measured by "openssl speed rsa2048").
6659 *) Rename memory handling macros to avoid conflicts with other
6661 Malloc => OPENSSL_malloc
6662 Malloc_locked => OPENSSL_malloc_locked
6663 Realloc => OPENSSL_realloc
6664 Free => OPENSSL_free
6667 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
6668 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
6671 *) CygWin32 support.
6672 [John Jarvie <jjarvie@newsguy.com>]
6674 *) The type-safe stack code has been rejigged. It is now only compiled
6675 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
6676 by default all type-specific stack functions are "#define"d back to
6677 standard stack functions. This results in more streamlined output
6678 but retains the type-safety checking possibilities of the original
6682 *) The STACK code has been cleaned up, and certain type declarations
6683 that didn't make a lot of sense have been brought in line. This has
6684 also involved a cleanup of sorts in safestack.h to more correctly
6685 map type-safe stack functions onto their plain stack counterparts.
6686 This work has also resulted in a variety of "const"ifications of
6687 lots of the code, especially "_cmp" operations which should normally
6688 be prototyped with "const" parameters anyway.
6691 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
6692 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
6693 (The PRNG state consists of two parts, the large pool 'state' and 'md',
6694 where all of 'md' is used each time the PRNG is used, but 'state'
6695 is used only indexed by a cyclic counter. As entropy may not be
6696 well distributed from the beginning, 'md' is important as a
6697 chaining variable. However, the output function chains only half
6698 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
6699 all of 'md', and seeding with STATE_SIZE dummy bytes will result
6700 in all of 'state' being rewritten, with the new values depending
6701 on virtually all of 'md'. This overcomes the 80 bit limitation.)
6704 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
6705 the handshake is continued after ssl_verify_cert_chain();
6706 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
6707 can lead to 'unexplainable' connection aborts later.
6708 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
6710 *) Major EVP API cipher revision.
6711 Add hooks for extra EVP features. This allows various cipher
6712 parameters to be set in the EVP interface. Support added for variable
6713 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
6714 setting of RC2 and RC5 parameters.
6716 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
6719 Remove lots of duplicated code from the EVP library. For example *every*
6720 cipher init() function handles the 'iv' in the same way according to the
6721 cipher mode. They also all do nothing if the 'key' parameter is NULL and
6722 for CFB and OFB modes they zero ctx->num.
6724 New functionality allows removal of S/MIME code RC2 hack.
6726 Most of the routines have the same form and so can be declared in terms
6729 By shifting this to the top level EVP_CipherInit() it can be removed from
6730 all individual ciphers. If the cipher wants to handle IVs or keys
6731 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
6734 Change lots of functions like EVP_EncryptUpdate() to now return a
6735 value: although software versions of the algorithms cannot fail
6736 any installed hardware versions can.
6739 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
6740 this option is set, tolerate broken clients that send the negotiated
6741 protocol version number instead of the requested protocol version
6745 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
6746 i.e. non-zero for export ciphersuites, zero otherwise.
6747 Previous versions had this flag inverted, inconsistent with
6748 rsa_tmp_cb (..._TMP_RSA_CB).
6749 [Bodo Moeller; problem reported by Amit Chopra]
6751 *) Add missing DSA library text string. Work around for some IIS
6752 key files with invalid SEQUENCE encoding.
6755 *) Add a document (doc/standards.txt) that list all kinds of standards
6756 and so on that are implemented in OpenSSL.
6759 *) Enhance c_rehash script. Old version would mishandle certificates
6760 with the same subject name hash and wouldn't handle CRLs at all.
6761 Added -fingerprint option to crl utility, to support new c_rehash
6765 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6768 *) Fix for SSL server purpose checking. Server checking was
6769 rejecting certificates which had extended key usage present
6770 but no ssl client purpose.
6771 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6773 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6774 is a little unclear about how a blank password is handled.
6775 Since the password in encoded as a BMPString with terminating
6776 double NULL a zero length password would end up as just the
6777 double NULL. However no password at all is different and is
6778 handled differently in the PKCS#12 key generation code. NS
6779 treats a blank password as zero length. MSIE treats it as no
6780 password on export: but it will try both on import. We now do
6781 the same: PKCS12_parse() tries zero length and no password if
6782 the password is set to "" or NULL (NULL is now a valid password:
6783 it wasn't before) as does the pkcs12 application.
6786 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6787 perror when PEM_read_bio_X509_REQ fails, the error message must
6788 be obtained from the error queue.
6791 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6792 it in ERR_remove_state if appropriate, and change ERR_get_state
6793 accordingly to avoid race conditions (this is necessary because
6794 thread_hash is no longer constant once set).
6797 *) Bugfix for linux-elf makefile.one.
6800 *) RSA_get_default_method() will now cause a default
6801 RSA_METHOD to be chosen if one doesn't exist already.
6802 Previously this was only set during a call to RSA_new()
6803 or RSA_new_method(NULL) meaning it was possible for
6804 RSA_get_default_method() to return NULL.
6807 *) Added native name translation to the existing DSO code
6808 that will convert (if the flag to do so is set) filenames
6809 that are sufficiently small and have no path information
6810 into a canonical native form. Eg. "blah" converted to
6811 "libblah.so" or "blah.dll" etc.
6814 *) New function ERR_error_string_n(e, buf, len) which is like
6815 ERR_error_string(e, buf), but writes at most 'len' bytes
6816 including the 0 terminator. For ERR_error_string_n, 'buf'
6818 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6820 *) CONF library reworked to become more general. A new CONF
6821 configuration file reader "class" is implemented as well as a
6822 new functions (NCONF_*, for "New CONF") to handle it. The now
6823 old CONF_* functions are still there, but are reimplemented to
6824 work in terms of the new functions. Also, a set of functions
6825 to handle the internal storage of the configuration data is
6826 provided to make it easier to write new configuration file
6827 reader "classes" (I can definitely see something reading a
6828 configuration file in XML format, for example), called _CONF_*,
6829 or "the configuration storage API"...
6831 The new configuration file reading functions are:
6833 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6834 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6836 NCONF_default, NCONF_WIN32
6838 NCONF_dump_fp, NCONF_dump_bio
6840 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6841 NCONF_new creates a new CONF object. This works in the same way
6842 as other interfaces in OpenSSL, like the BIO interface.
6843 NCONF_dump_* dump the internal storage of the configuration file,
6844 which is useful for debugging. All other functions take the same
6845 arguments as the old CONF_* functions wth the exception of the
6846 first that must be a `CONF *' instead of a `LHASH *'.
6848 To make it easer to use the new classes with the old CONF_* functions,
6849 the function CONF_set_default_method is provided.
6852 *) Add '-tls1' option to 'openssl ciphers', which was already
6853 mentioned in the documentation but had not been implemented.
6854 (This option is not yet really useful because even the additional
6855 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6858 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6859 OpenSSL-based applications) load shared libraries and bind to
6860 them in a portable way.
6861 [Geoff Thorpe, with contributions from Richard Levitte]
6863 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6865 *) Make sure _lrotl and _lrotr are only used with MSVC.
6867 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6868 (the default implementation of RAND_status).
6870 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6871 to '-clrext' (= clear extensions), as intended and documented.
6872 [Bodo Moeller; inconsistency pointed out by Michael Attili
6875 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6876 was larger than the MD block size.
6877 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6879 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6880 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6881 using the passed key: if the passed key was a private key the result
6882 of X509_print(), for example, would be to print out all the private key
6886 *) des_quad_cksum() byte order bug fix.
6887 [Ulf Möller, using the problem description in krb4-0.9.7, where
6888 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6890 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6892 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6894 *) For easily testing in shell scripts whether some command
6895 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6896 returns with exit code 0 iff no command of the given name is available.
6897 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6898 the output goes to stdout and nothing is printed to stderr.
6899 Additional arguments are always ignored.
6901 Since for each cipher there is a command of the same name,
6902 the 'no-cipher' compilation switches can be tested this way.
6904 ('openssl no-XXX' is not able to detect pseudo-commands such
6905 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6908 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6911 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6912 is set; it will be thrown away anyway because each handshake creates
6914 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6915 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6916 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6917 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6920 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6921 'Q' and 'R' lose their special meanings (quit/renegotiate).
6922 This is part of what -quiet does; unlike -quiet, -ign_eof
6923 does not suppress any output.
6926 *) Add compatibility options to the purpose and trust code. The
6927 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6928 accepts a certificate or CA, this was the previous behaviour,
6929 with all the associated security issues.
6931 X509_TRUST_COMPAT is the old trust behaviour: only and
6932 automatically trust self signed roots in certificate store. A
6933 new trust setting X509_TRUST_DEFAULT is used to specify that
6934 a purpose has no associated trust setting and it should instead
6935 use the value in the default purpose.
6938 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6939 and fix a memory leak.
6942 *) In util/mkerr.pl (which implements 'make errors'), preserve
6943 reason strings from the previous version of the .c file, as
6944 the default to have only downcase letters (and digits) in
6945 automatically generated reasons codes is not always appropriate.
6948 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6949 using strerror. Previously, ERR_reason_error_string() returned
6950 library names as reason strings for SYSerr; but SYSerr is a special
6951 case where small numbers are errno values, not library numbers.
6954 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6955 converts DSA parameters into DH parameters. (When creating parameters,
6956 DSA_generate_parameters is used.)
6959 *) Include 'length' (recommended exponent length) in C code generated
6960 by 'openssl dhparam -C'.
6963 *) The second argument to set_label in perlasm was already being used
6964 so couldn't be used as a "file scope" flag. Moved to third argument
6968 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6969 instead of RAND_bytes for encryption IVs and salts.
6972 *) Include RAND_status() into RAND_METHOD instead of implementing
6973 it only for md_rand.c Otherwise replacing the PRNG by calling
6974 RAND_set_rand_method would be impossible.
6977 *) Don't let DSA_generate_key() enter an infinite loop if the random
6978 number generation fails.
6981 *) New 'rand' application for creating pseudo-random output.
6984 *) Added configuration support for Linux/IA64
6985 [Rolf Haberrecker <rolf@suse.de>]
6987 *) Assembler module support for Mingw32.
6990 *) Shared library support for HPUX (in shlib/).
6991 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6993 *) Shared library support for Solaris gcc.
6994 [Lutz Behnke <behnke@trustcenter.de>]
6996 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6998 *) PKCS7_encrypt() was adding text MIME headers twice because they
6999 were added manually and by SMIME_crlf_copy().
7002 *) In bntest.c don't call BN_rand with zero bits argument.
7003 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7005 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7006 case was implemented. This caused BN_div_recp() to fail occasionally.
7009 *) Add an optional second argument to the set_label() in the perl
7010 assembly language builder. If this argument exists and is set
7011 to 1 it signals that the assembler should use a symbol whose
7012 scope is the entire file, not just the current function. This
7013 is needed with MASM which uses the format label:: for this scope.
7014 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7016 *) Change the ASN1 types so they are typedefs by default. Before
7017 almost all types were #define'd to ASN1_STRING which was causing
7018 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7022 *) Change names of new functions to the new get1/get0 naming
7023 convention: After 'get1', the caller owns a reference count
7024 and has to call ..._free; 'get0' returns a pointer to some
7025 data structure without incrementing reference counters.
7026 (Some of the existing 'get' functions increment a reference
7027 counter, some don't.)
7028 Similarly, 'set1' and 'add1' functions increase reference
7029 counters or duplicate objects.
7032 *) Allow for the possibility of temp RSA key generation failure:
7033 the code used to assume it always worked and crashed on failure.
7036 *) Fix potential buffer overrun problem in BIO_printf().
7037 [Ulf Möller, using public domain code by Patrick Powell; problem
7038 pointed out by David Sacerdote <das33@cornell.edu>]
7040 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7041 RAND_egd() and RAND_status(). In the command line application,
7042 the EGD socket can be specified like a seed file using RANDFILE
7046 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7047 Some CAs (e.g. Verisign) distribute certificates in this form.
7050 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7051 list to exclude them. This means that no special compilation option
7052 is needed to use anonymous DH: it just needs to be included in the
7056 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7057 EVP_MD_type. The old functionality is available in a new macro called
7058 EVP_MD_md(). Change code that uses it and update docs.
7061 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7062 where the 'void *' argument is replaced by a function pointer argument.
7063 Previously 'void *' was abused to point to functions, which works on
7064 many platforms, but is not correct. As these functions are usually
7065 called by macros defined in OpenSSL header files, most source code
7066 should work without changes.
7069 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7070 sections with information on -D... compiler switches used for
7071 compiling the library so that applications can see them. To enable
7072 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7073 must be defined. E.g.,
7074 #define OPENSSL_ALGORITHM_DEFINES
7075 #include <openssl/opensslconf.h>
7076 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7077 [Richard Levitte, Ulf and Bodo Möller]
7079 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7083 *) Change the 'other' type in certificate aux info to a STACK_OF
7084 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7085 the required ASN1 format: arbitrary types determined by an OID.
7088 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7089 argument to 'req'. This is not because the function is newer or
7090 better than others it just uses the work 'NEW' in the certificate
7091 request header lines. Some software needs this.
7094 *) Reorganise password command line arguments: now passwords can be
7095 obtained from various sources. Delete the PEM_cb function and make
7096 it the default behaviour: i.e. if the callback is NULL and the
7097 usrdata argument is not NULL interpret it as a null terminated pass
7098 phrase. If usrdata and the callback are NULL then the pass phrase
7099 is prompted for as usual.
7102 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7103 the support is automatically enabled. The resulting binaries will
7104 autodetect the card and use it if present.
7105 [Ben Laurie and Compaq Inc.]
7107 *) Work around for Netscape hang bug. This sends certificate request
7108 and server done in one record. Since this is perfectly legal in the
7109 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7110 the bugs/SSLv3 entry for more info.
7113 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7116 *) Add -rand argument to smime and pkcs12 applications and read/write
7120 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7123 *) Add command line password options to the remaining applications.
7126 *) Bug fix for BN_div_recp() for numerators with an even number of
7130 *) More tests in bntest.c, and changed test_bn output.
7133 *) ./config recognizes MacOS X now.
7136 *) Bug fix for BN_div() when the first words of num and divsor are
7137 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7140 *) Add support for various broken PKCS#8 formats, and command line
7141 options to produce them.
7144 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7145 get temporary BIGNUMs from a BN_CTX.
7148 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7152 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7153 include a #define from the old name to the new. The original intent
7154 was that statically linked binaries could for example just call
7155 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7156 link with digests. This never worked becayse SSLeay_add_all_digests()
7157 and SSLeay_add_all_ciphers() were in the same source file so calling
7158 one would link with the other. They are now in separate source files.
7161 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7164 *) Use a less unusual form of the Miller-Rabin primality test (it used
7165 a binary algorithm for exponentiation integrated into the Miller-Rabin
7166 loop, our standard modexp algorithms are faster).
7169 *) Support for the EBCDIC character set completed.
7170 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7172 *) Source code cleanups: use const where appropriate, eliminate casts,
7173 use void * instead of char * in lhash.
7176 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7177 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7178 this the server could overwrite ephemeral keys that the client
7182 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7183 using 50 iterations of the Rabin-Miller test.
7185 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7186 iterations of the Rabin-Miller test as required by the appendix
7187 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7188 As BN_is_prime_fasttest includes trial division, DSA parameter
7189 generation becomes much faster.
7191 This implies a change for the callback functions in DSA_is_prime
7192 and DSA_generate_parameters: The callback function is called once
7193 for each positive witness in the Rabin-Miller test, not just
7194 occasionally in the inner loop; and the parameters to the
7195 callback function now provide an iteration count for the outer
7196 loop rather than for the current invocation of the inner loop.
7197 DSA_generate_parameters additionally can call the callback
7198 function with an 'iteration count' of -1, meaning that a
7199 candidate has passed the trial division test (when q is generated
7200 from an application-provided seed, trial division is skipped).
7203 *) New function BN_is_prime_fasttest that optionally does trial
7204 division before starting the Rabin-Miller test and has
7205 an additional BN_CTX * argument (whereas BN_is_prime always
7206 has to allocate at least one BN_CTX).
7207 'callback(1, -1, cb_arg)' is called when a number has passed the
7208 trial division stage.
7211 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7215 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7218 *) New function BN_pseudo_rand().
7221 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7222 bignum version of BN_from_montgomery() with the working code from
7223 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7227 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7228 made it impossible to use the same SSL_SESSION data structure in
7229 SSL2 clients in multiple threads.
7232 *) The return value of RAND_load_file() no longer counts bytes obtained
7233 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7234 to seed the PRNG (previously an explicit byte count was required).
7235 [Ulf Möller, Bodo Möller]
7237 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7238 used (char *) instead of (void *) and had casts all over the place.
7241 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7244 *) Retain source code compatibility for BN_prime_checks macro:
7245 BN_is_prime(..., BN_prime_checks, ...) now uses
7246 BN_prime_checks_for_size to determine the appropriate number of
7247 Rabin-Miller iterations.
7250 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7251 DH_CHECK_P_NOT_SAFE_PRIME.
7252 (Check if this is true? OpenPGP calls them "strong".)
7255 *) Merge the functionality of "dh" and "gendh" programs into a new program
7256 "dhparam". The old programs are retained for now but will handle DH keys
7257 (instead of parameters) in future.
7260 *) Make the ciphers, s_server and s_client programs check the return values
7261 when a new cipher list is set.
7264 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7265 ciphers. Before when the 56bit ciphers were enabled the sorting was
7268 The syntax for the cipher sorting has been extended to support sorting by
7269 cipher-strength (using the strength_bits hard coded in the tables).
7270 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7272 Fix a bug in the cipher-command parser: when supplying a cipher command
7273 string with an "undefined" symbol (neither command nor alphanumeric
7274 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7275 an error is flagged.
7277 Due to the strength-sorting extension, the code of the
7278 ssl_create_cipher_list() function was completely rearranged. I hope that
7279 the readability was also increased :-)
7280 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7282 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7283 for the first serial number and places 2 in the serial number file. This
7284 avoids problems when the root CA is created with serial number zero and
7285 the first user certificate has the same issuer name and serial number
7289 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7290 the new code. Add documentation for this stuff.
7293 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7294 X509_*() to X509at_*() on the grounds that they don't handle X509
7295 structures and behave in an analagous way to the X509v3 functions:
7296 they shouldn't be called directly but wrapper functions should be used
7299 So we also now have some wrapper functions that call the X509at functions
7300 when passed certificate requests. (TO DO: similar things can be done with
7301 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7302 things. Some of these need some d2i or i2d and print functionality
7303 because they handle more complex structures.)
7306 *) Add missing #ifndefs that caused missing symbols when building libssl
7307 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7308 NO_RSA in ssl/s2*.c.
7309 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7311 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7312 has a return value which indicates the quality of the random data
7313 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7314 error queue. New function RAND_pseudo_bytes() generates output that is
7315 guaranteed to be unique but not unpredictable. RAND_add is like
7316 RAND_seed, but takes an extra argument for an entropy estimate
7317 (RAND_seed always assumes full entropy).
7320 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7321 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7322 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7323 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7324 false-positive rate of at most 2^-80 for random input.
7327 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7330 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7331 in the 0.9.5 release), this returns the chain
7332 from an X509_CTX structure with a dup of the stack and all
7333 the X509 reference counts upped: so the stack will exist
7334 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7337 Also make SSL_SESSION_print() print out the verify return
7341 *) Add manpage for the pkcs12 command. Also change the default
7342 behaviour so MAC iteration counts are used unless the new
7343 -nomaciter option is used. This improves file security and
7344 only older versions of MSIE (4.0 for example) need it.
7347 *) Honor the no-xxx Configure options when creating .DEF files.
7350 *) Add PKCS#10 attributes to field table: challengePassword,
7351 unstructuredName and unstructuredAddress. These are taken from
7352 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7353 international characters are used.
7355 More changes to X509_ATTRIBUTE code: allow the setting of types
7356 based on strings. Remove the 'loc' parameter when adding
7357 attributes because these will be a SET OF encoding which is sorted
7361 *) Initial changes to the 'req' utility to allow request generation
7362 automation. This will allow an application to just generate a template
7363 file containing all the field values and have req construct the
7366 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7367 used all over the place including certificate requests and PKCS#7
7368 structures. They are currently handled manually where necessary with
7369 some primitive wrappers for PKCS#7. The new functions behave in a
7370 manner analogous to the X509 extension functions: they allow
7371 attributes to be looked up by NID and added.
7373 Later something similar to the X509V3 code would be desirable to
7374 automatically handle the encoding, decoding and printing of the
7375 more complex types. The string types like challengePassword can
7376 be handled by the string table functions.
7378 Also modified the multi byte string table handling. Now there is
7379 a 'global mask' which masks out certain types. The table itself
7380 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7381 is useful when for example there is only one permissible type
7382 (as in countryName) and using the mask might result in no valid
7386 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7387 SSL_get_peer_finished to allow applications to obtain the latest
7388 Finished messages sent to the peer or expected from the peer,
7389 respectively. (SSL_get_peer_finished is usually the Finished message
7390 actually received from the peer, otherwise the protocol will be aborted.)
7392 As the Finished message are message digests of the complete handshake
7393 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7394 be used for external authentication procedures when the authentication
7395 provided by SSL/TLS is not desired or is not enough.
7398 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7399 the host supports BWX extension and if Compaq C is present on the
7400 $PATH. Just exploiting of the BWX extension results in 20-30%
7401 performance kick for some algorithms, e.g. DES and RC4 to mention
7402 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7406 *) Add support for MS "fast SGC". This is arguably a violation of the
7407 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7408 weak crypto and after checking the certificate is SGC a second one
7409 with strong crypto. MS SGC stops the first handshake after receiving
7410 the server certificate message and sends a second client hello. Since
7411 a server will typically do all the time consuming operations before
7412 expecting any further messages from the client (server key exchange
7413 is the most expensive) there is little difference between the two.
7415 To get OpenSSL to support MS SGC we have to permit a second client
7416 hello message after we have sent server done. In addition we have to
7417 reset the MAC if we do get this second client hello.
7420 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7421 if a DER encoded private key is RSA or DSA traditional format. Changed
7422 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7423 format DER encoded private key. Newer code should use PKCS#8 format which
7424 has the key type encoded in the ASN1 structure. Added DER private key
7425 support to pkcs8 application.
7428 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7429 ciphersuites has been selected (as required by the SSL 3/TLS 1
7430 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7431 is set, we interpret this as a request to violate the specification
7432 (the worst that can happen is a handshake failure, and 'correct'
7433 behaviour would result in a handshake failure anyway).
7436 *) In SSL_CTX_add_session, take into account that there might be multiple
7437 SSL_SESSION structures with the same session ID (e.g. when two threads
7438 concurrently obtain them from an external cache).
7439 The internal cache can handle only one SSL_SESSION with a given ID,
7440 so if there's a conflict, we now throw out the old one to achieve
7444 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7445 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7446 some routines that use cipher OIDs: some ciphers do not have OIDs
7447 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7451 *) Simplify the trust setting structure and code. Now we just have
7452 two sequences of OIDs for trusted and rejected settings. These will
7453 typically have values the same as the extended key usage extension
7454 and any application specific purposes.
7456 The trust checking code now has a default behaviour: it will just
7457 check for an object with the same NID as the passed id. Functions can
7458 be provided to override either the default behaviour or the behaviour
7459 for a given id. SSL client, server and email already have functions
7460 in place for compatibility: they check the NID and also return "trusted"
7461 if the certificate is self signed.
7464 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7465 traditional format into an EVP_PKEY structure.
7468 *) Add a password callback function PEM_cb() which either prompts for
7469 a password if usr_data is NULL or otherwise assumes it is a null
7470 terminated password. Allow passwords to be passed on command line
7471 environment or config files in a few more utilities.
7474 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7475 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7476 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7477 Update documentation.
7480 *) Support for ASN1 "NULL" type. This could be handled before by using
7481 ASN1_TYPE but there wasn't any function that would try to read a NULL
7482 and produce an error if it couldn't. For compatibility we also have
7483 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7484 don't allocate anything because they don't need to.
7487 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
7489 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
7491 *) Rebuild of the memory allocation routines used by OpenSSL code and
7492 possibly others as well. The purpose is to make an interface that
7493 provide hooks so anyone can build a separate set of allocation and
7494 deallocation routines to be used by OpenSSL, for example memory
7495 pool implementations, or something else, which was previously hard
7496 since Malloc(), Realloc() and Free() were defined as macros having
7497 the values malloc, realloc and free, respectively (except for Win32
7498 compilations). The same is provided for memory debugging code.
7499 OpenSSL already comes with functionality to find memory leaks, but
7500 this gives people a chance to debug other memory problems.
7502 With these changes, a new set of functions and macros have appeared:
7504 CRYPTO_set_mem_debug_functions() [F]
7505 CRYPTO_get_mem_debug_functions() [F]
7506 CRYPTO_dbg_set_options() [F]
7507 CRYPTO_dbg_get_options() [F]
7508 CRYPTO_malloc_debug_init() [M]
7510 The memory debug functions are NULL by default, unless the library
7511 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
7512 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
7513 gives the standard debugging functions that come with OpenSSL) or
7514 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
7515 provided by the library user) must be used. When the standard
7516 debugging functions are used, CRYPTO_dbg_set_options can be used to
7517 request additional information:
7518 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
7519 the CRYPTO_MDEBUG_xxx macro when compiling the library.
7521 Also, things like CRYPTO_set_mem_functions will always give the
7522 expected result (the new set of functions is used for allocation
7523 and deallocation) at all times, regardless of platform and compiler
7526 To finish it up, some functions that were never use in any other
7527 way than through macros have a new API and new semantic:
7530 CRYPTO_dbg_realloc()
7533 All macros of value have retained their old syntax.
7534 [Richard Levitte and Bodo Moeller]
7536 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
7537 ordering of SMIMECapabilities wasn't in "strength order" and there
7538 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
7542 *) Some ASN1 types with illegal zero length encoding (INTEGER,
7543 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
7544 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
7546 *) Merge in my S/MIME library for OpenSSL. This provides a simple
7547 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
7548 functionality to handle multipart/signed properly) and a utility
7549 called 'smime' to call all this stuff. This is based on code I
7550 originally wrote for Celo who have kindly allowed it to be
7551 included in OpenSSL.
7554 *) Add variants des_set_key_checked and des_set_key_unchecked of
7555 des_set_key (aka des_key_sched). Global variable des_check_key
7556 decides which of these is called by des_set_key; this way
7557 des_check_key behaves as it always did, but applications and
7558 the library itself, which was buggy for des_check_key == 1,
7559 have a cleaner way to pick the version they need.
7562 *) New function PKCS12_newpass() which changes the password of a
7566 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
7567 dynamic mix. In both cases the ids can be used as an index into the
7568 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
7569 functions so they accept a list of the field values and the
7570 application doesn't need to directly manipulate the X509_TRUST
7574 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
7578 *) Modify the way the V3 extension code looks up extensions. This now
7579 works in a similar way to the object code: we have some "standard"
7580 extensions in a static table which is searched with OBJ_bsearch()
7581 and the application can add dynamic ones if needed. The file
7582 crypto/x509v3/ext_dat.h now has the info: this file needs to be
7583 updated whenever a new extension is added to the core code and kept
7584 in ext_nid order. There is a simple program 'tabtest.c' which checks
7585 this. New extensions are not added too often so this file can readily
7586 be maintained manually.
7588 There are two big advantages in doing things this way. The extensions
7589 can be looked up immediately and no longer need to be "added" using
7590 X509V3_add_standard_extensions(): this function now does nothing.
7591 [Side note: I get *lots* of email saying the extension code doesn't
7592 work because people forget to call this function]
7593 Also no dynamic allocation is done unless new extensions are added:
7594 so if we don't add custom extensions there is no need to call
7595 X509V3_EXT_cleanup().
7598 *) Modify enc utility's salting as follows: make salting the default. Add a
7599 magic header, so unsalted files fail gracefully instead of just decrypting
7600 to garbage. This is because not salting is a big security hole, so people
7601 should be discouraged from doing it.
7604 *) Fixes and enhancements to the 'x509' utility. It allowed a message
7605 digest to be passed on the command line but it only used this
7606 parameter when signing a certificate. Modified so all relevant
7607 operations are affected by the digest parameter including the
7608 -fingerprint and -x509toreq options. Also -x509toreq choked if a
7609 DSA key was used because it didn't fix the digest.
7612 *) Initial certificate chain verify code. Currently tests the untrusted
7613 certificates for consistency with the verify purpose (which is set
7614 when the X509_STORE_CTX structure is set up) and checks the pathlength.
7616 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
7617 this is because it will reject chains with invalid extensions whereas
7618 every previous version of OpenSSL and SSLeay made no checks at all.
7620 Trust code: checks the root CA for the relevant trust settings. Trust
7621 settings have an initial value consistent with the verify purpose: e.g.
7622 if the verify purpose is for SSL client use it expects the CA to be
7623 trusted for SSL client use. However the default value can be changed to
7624 permit custom trust settings: one example of this would be to only trust
7625 certificates from a specific "secure" set of CAs.
7627 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
7628 which should be used for version portability: especially since the
7629 verify structure is likely to change more often now.
7631 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
7632 to set them. If not set then assume SSL clients will verify SSL servers
7635 Two new options to the verify program: -untrusted allows a set of
7636 untrusted certificates to be passed in and -purpose which sets the
7637 intended purpose of the certificate. If a purpose is set then the
7638 new chain verify code is used to check extension consistency.
7641 *) Support for the authority information access extension.
7644 *) Modify RSA and DSA PEM read routines to transparently handle
7645 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
7646 public keys in a format compatible with certificate
7647 SubjectPublicKeyInfo structures. Unfortunately there were already
7648 functions called *_PublicKey_* which used various odd formats so
7649 these are retained for compatibility: however the DSA variants were
7650 never in a public release so they have been deleted. Changed dsa/rsa
7651 utilities to handle the new format: note no releases ever handled public
7652 keys so we should be OK.
7654 The primary motivation for this change is to avoid the same fiasco
7655 that dogs private keys: there are several incompatible private key
7656 formats some of which are standard and some OpenSSL specific and
7657 require various evil hacks to allow partial transparent handling and
7658 even then it doesn't work with DER formats. Given the option anything
7659 other than PKCS#8 should be dumped: but the other formats have to
7660 stay in the name of compatibility.
7662 With public keys and the benefit of hindsight one standard format
7663 is used which works with EVP_PKEY, RSA or DSA structures: though
7664 it clearly returns an error if you try to read the wrong kind of key.
7666 Added a -pubkey option to the 'x509' utility to output the public key.
7667 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
7668 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
7669 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
7670 that do the same as the EVP_PKEY_assign_*() except they up the
7671 reference count of the added key (they don't "swallow" the
7675 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
7676 CRLs would fail if the file contained no certificates or no CRLs:
7677 added a new function to read in both types and return the number
7678 read: this means that if none are read it will be an error. The
7679 DER versions of the certificate and CRL reader would always fail
7680 because it isn't possible to mix certificates and CRLs in DER format
7681 without choking one or the other routine. Changed this to just read
7682 a certificate: this is the best we can do. Also modified the code
7683 in apps/verify.c to take notice of return codes: it was previously
7684 attempting to read in certificates from NULL pointers and ignoring
7685 any errors: this is one reason why the cert and CRL reader seemed
7686 to work. It doesn't check return codes from the default certificate
7687 routines: these may well fail if the certificates aren't installed.
7690 *) Code to support otherName option in GeneralName.
7693 *) First update to verify code. Change the verify utility
7694 so it warns if it is passed a self signed certificate:
7695 for consistency with the normal behaviour. X509_verify
7696 has been modified to it will now verify a self signed
7697 certificate if *exactly* the same certificate appears
7698 in the store: it was previously impossible to trust a
7699 single self signed certificate. This means that:
7700 openssl verify ss.pem
7701 now gives a warning about a self signed certificate but
7702 openssl verify -CAfile ss.pem ss.pem
7706 *) For servers, store verify_result in SSL_SESSION data structure
7707 (and add it to external session representation).
7708 This is needed when client certificate verifications fails,
7709 but an application-provided verification callback (set by
7710 SSL_CTX_set_cert_verify_callback) allows accepting the session
7711 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
7712 but returns 1): When the session is reused, we have to set
7713 ssl->verify_result to the appropriate error code to avoid
7715 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
7717 *) Fix a bug in the new PKCS#7 code: it didn't consider the
7718 case in PKCS7_dataInit() where the signed PKCS7 structure
7719 didn't contain any existing data because it was being created.
7720 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
7722 *) Add a salt to the key derivation routines in enc.c. This
7723 forms the first 8 bytes of the encrypted file. Also add a
7724 -S option to allow a salt to be input on the command line.
7727 *) New function X509_cmp(). Oddly enough there wasn't a function
7728 to compare two certificates. We do this by working out the SHA1
7729 hash and comparing that. X509_cmp() will be needed by the trust
7733 *) SSL_get1_session() is like SSL_get_session(), but increments
7734 the reference count in the SSL_SESSION returned.
7735 [Geoff Thorpe <geoff@eu.c2.net>]
7737 *) Fix for 'req': it was adding a null to request attributes.
7738 Also change the X509_LOOKUP and X509_INFO code to handle
7739 certificate auxiliary information.
7742 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
7746 *) Add the possibility to add extra information to the memory leak
7747 detecting output, to form tracebacks, showing from where each
7748 allocation was originated: CRYPTO_push_info("constant string") adds
7749 the string plus current file name and line number to a per-thread
7750 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
7751 is like calling CYRPTO_pop_info() until the stack is empty.
7752 Also updated memory leak detection code to be multi-thread-safe.
7755 *) Add options -text and -noout to pkcs7 utility and delete the
7756 encryption options which never did anything. Update docs.
7759 *) Add options to some of the utilities to allow the pass phrase
7760 to be included on either the command line (not recommended on
7761 OSes like Unix) or read from the environment. Update the
7762 manpages and fix a few bugs.
7765 *) Add a few manpages for some of the openssl commands.
7768 *) Fix the -revoke option in ca. It was freeing up memory twice,
7769 leaking and not finding already revoked certificates.
7772 *) Extensive changes to support certificate auxiliary information.
7773 This involves the use of X509_CERT_AUX structure and X509_AUX
7774 functions. An X509_AUX function such as PEM_read_X509_AUX()
7775 can still read in a certificate file in the usual way but it
7776 will also read in any additional "auxiliary information". By
7777 doing things this way a fair degree of compatibility can be
7778 retained: existing certificates can have this information added
7779 using the new 'x509' options.
7781 Current auxiliary information includes an "alias" and some trust
7782 settings. The trust settings will ultimately be used in enhanced
7783 certificate chain verification routines: currently a certificate
7784 can only be trusted if it is self signed and then it is trusted
7788 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7789 The problem was that one of the replacement routines had not been working
7790 since SSLeay releases. For now the offending routine has been replaced
7791 with non-optimised assembler. Even so, this now gives around 95%
7792 performance improvement for 1024 bit RSA signs.
7795 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7796 handling. Most clients have the effective key size in bits equal to
7797 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7798 A few however don't do this and instead use the size of the decrypted key
7799 to determine the RC2 key length and the AlgorithmIdentifier to determine
7800 the effective key length. In this case the effective key length can still
7801 be 40 bits but the key length can be 168 bits for example. This is fixed
7802 by manually forcing an RC2 key into the EVP_PKEY structure because the
7803 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7804 the key length and effective key length are equal.
7807 *) Add a bunch of functions that should simplify the creation of
7808 X509_NAME structures. Now you should be able to do:
7809 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7810 and have it automatically work out the correct field type and fill in
7811 the structures. The more adventurous can try:
7812 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7813 and it will (hopefully) work out the correct multibyte encoding.
7816 *) Change the 'req' utility to use the new field handling and multibyte
7817 copy routines. Before the DN field creation was handled in an ad hoc
7818 way in req, ca, and x509 which was rather broken and didn't support
7819 BMPStrings or UTF8Strings. Since some software doesn't implement
7820 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7821 using the dirstring_type option. See the new comment in the default
7822 openssl.cnf for more info.
7825 *) Make crypto/rand/md_rand.c more robust:
7826 - Assure unique random numbers after fork().
7827 - Make sure that concurrent threads access the global counter and
7828 md serializably so that we never lose entropy in them
7829 or use exactly the same state in multiple threads.
7830 Access to the large state is not always serializable because
7831 the additional locking could be a performance killer, and
7832 md should be large enough anyway.
7835 *) New file apps/app_rand.c with commonly needed functionality
7836 for handling the random seed file.
7838 Use the random seed file in some applications that previously did not:
7840 dsaparam -genkey (which also ignored its '-rand' option),
7843 x509 (when signing).
7844 Except on systems with /dev/urandom, it is crucial to have a random
7845 seed file at least for key creation, DSA signing, and for DH exchanges;
7846 for RSA signatures we could do without one.
7848 gendh and gendsa (unlike genrsa) used to read only the first byte
7849 of each file listed in the '-rand' option. The function as previously
7850 found in genrsa is now in app_rand.c and is used by all programs
7851 that support '-rand'.
7854 *) In RAND_write_file, use mode 0600 for creating files;
7855 don't just chmod when it may be too late.
7858 *) Report an error from X509_STORE_load_locations
7859 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7862 *) New function ASN1_mbstring_copy() this copies a string in either
7863 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7864 into an ASN1_STRING type. A mask of permissible types is passed
7865 and it chooses the "minimal" type to use or an error if not type
7869 *) Add function equivalents to the various macros in asn1.h. The old
7870 macros are retained with an M_ prefix. Code inside the library can
7871 use the M_ macros. External code (including the openssl utility)
7872 should *NOT* in order to be "shared library friendly".
7875 *) Add various functions that can check a certificate's extensions
7876 to see if it usable for various purposes such as SSL client,
7877 server or S/MIME and CAs of these types. This is currently
7878 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7879 verification. Also added a -purpose flag to x509 utility to
7880 print out all the purposes.
7883 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7887 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7888 for, obtain and decode and extension and obtain its critical flag.
7889 This allows all the necessary extension code to be handled in a
7890 single function call.
7893 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7894 platforms. See crypto/rc4/rc4_enc.c for further details.
7897 *) New -noout option to asn1parse. This causes no output to be produced
7898 its main use is when combined with -strparse and -out to extract data
7899 from a file (which may not be in ASN.1 format).
7902 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7903 when producing the local key id.
7904 [Richard Levitte <levitte@stacken.kth.se>]
7906 *) New option -dhparam in s_server. This allows a DH parameter file to be
7907 stated explicitly. If it is not stated then it tries the first server
7908 certificate file. The previous behaviour hard coded the filename
7912 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7913 a public key to be input or output. For example:
7914 openssl rsa -in key.pem -pubout -out pubkey.pem
7915 Also added necessary DSA public key functions to handle this.
7918 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7919 in the message. This was handled by allowing
7920 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7921 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7923 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7924 to the end of the strings whereas this didn't. This would cause problems
7925 if strings read with d2i_ASN1_bytes() were later modified.
7926 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7928 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7929 data and it contains EOF it will end up returning an error. This is
7930 caused by input 46 bytes long. The cause is due to the way base64
7931 BIOs find the start of base64 encoded data. They do this by trying a
7932 trial decode on each line until they find one that works. When they
7933 do a flag is set and it starts again knowing it can pass all the
7934 data directly through the decoder. Unfortunately it doesn't reset
7935 the context it uses. This means that if EOF is reached an attempt
7936 is made to pass two EOFs through the context and this causes the
7937 resulting error. This can also cause other problems as well. As is
7938 usual with these problems it takes *ages* to find and the fix is
7939 trivial: move one line.
7940 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7942 *) Ugly workaround to get s_client and s_server working under Windows. The
7943 old code wouldn't work because it needed to select() on sockets and the
7944 tty (for keypresses and to see if data could be written). Win32 only
7945 supports select() on sockets so we select() with a 1s timeout on the
7946 sockets and then see if any characters are waiting to be read, if none
7947 are present then we retry, we also assume we can always write data to
7948 the tty. This isn't nice because the code then blocks until we've
7949 received a complete line of data and it is effectively polling the
7950 keyboard at 1s intervals: however it's quite a bit better than not
7951 working at all :-) A dedicated Windows application might handle this
7952 with an event loop for example.
7955 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7956 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7957 will be called when RSA_sign() and RSA_verify() are used. This is useful
7958 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7959 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7960 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7961 This necessitated the support of an extra signature type NID_md5_sha1
7962 for SSL signatures and modifications to the SSL library to use it instead
7963 of calling RSA_public_decrypt() and RSA_private_encrypt().
7966 *) Add new -verify -CAfile and -CApath options to the crl program, these
7967 will lookup a CRL issuers certificate and verify the signature in a
7968 similar way to the verify program. Tidy up the crl program so it
7969 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7970 less strict. It will now permit CRL extensions even if it is not
7971 a V2 CRL: this will allow it to tolerate some broken CRLs.
7974 *) Initialize all non-automatic variables each time one of the openssl
7975 sub-programs is started (this is necessary as they may be started
7976 multiple times from the "OpenSSL>" prompt).
7977 [Lennart Bang, Bodo Moeller]
7979 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7980 removing all other RSA functionality (this is what NO_RSA does). This
7981 is so (for example) those in the US can disable those operations covered
7982 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7986 *) Non-copying interface to BIO pairs.
7987 (still largely untested)
7990 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7991 ASCII string. This was handled independently in various places before.
7994 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7995 UTF8 strings a character at a time.
7998 *) Use client_version from client hello to select the protocol
7999 (s23_srvr.c) and for RSA client key exchange verification
8000 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8003 *) Add various utility functions to handle SPKACs, these were previously
8004 handled by poking round in the structure internals. Added new function
8005 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8006 print, verify and generate SPKACs. Based on an original idea from
8007 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8010 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8013 *) Allow the config file extension section to be overwritten on the
8014 command line. Based on an original idea from Massimiliano Pala
8015 <madwolf@comune.modena.it>. The new option is called -extensions
8016 and can be applied to ca, req and x509. Also -reqexts to override
8017 the request extensions in req and -crlexts to override the crl extensions
8021 *) Add new feature to the SPKAC handling in ca. Now you can include
8022 the same field multiple times by preceding it by "XXXX." for example:
8025 this is the same syntax as used in the req config file.
8028 *) Allow certificate extensions to be added to certificate requests. These
8029 are specified in a 'req_extensions' option of the req section of the
8030 config file. They can be printed out with the -text option to req but
8031 are otherwise ignored at present.
8034 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8035 data read consists of only the final block it would not decrypted because
8036 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8037 A misplaced 'break' also meant the decrypted final block might not be
8038 copied until the next read.
8041 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8042 a few extra parameters to the DH structure: these will be useful if
8043 for example we want the value of 'q' or implement X9.42 DH.
8046 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8047 provides hooks that allow the default DSA functions or functions on a
8048 "per key" basis to be replaced. This allows hardware acceleration and
8049 hardware key storage to be handled without major modification to the
8050 library. Also added low level modexp hooks and CRYPTO_EX structure and
8051 associated functions.
8054 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8055 as "read only": it can't be written to and the buffer it points to will
8056 not be freed. Reading from a read only BIO is much more efficient than
8057 a normal memory BIO. This was added because there are several times when
8058 an area of memory needs to be read from a BIO. The previous method was
8059 to create a memory BIO and write the data to it, this results in two
8060 copies of the data and an O(n^2) reading algorithm. There is a new
8061 function BIO_new_mem_buf() which creates a read only memory BIO from
8062 an area of memory. Also modified the PKCS#7 routines to use read only
8066 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8067 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8068 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8069 but a retry condition occured while trying to read the rest.
8072 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8073 NID_pkcs7_encrypted by default: this was wrong since this should almost
8074 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8075 the encrypted data type: this is a more sensible place to put it and it
8076 allows the PKCS#12 code to be tidied up that duplicated this
8080 *) Changed obj_dat.pl script so it takes its input and output files on
8081 the command line. This should avoid shell escape redirection problems
8085 *) Initial support for certificate extension requests, these are included
8086 in things like Xenroll certificate requests. Included functions to allow
8087 extensions to be obtained and added.
8090 *) -crlf option to s_client and s_server for sending newlines as
8091 CRLF (as required by many protocols).
8094 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8096 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8097 [Ralf S. Engelschall]
8099 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8100 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8102 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8106 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8107 DH parameters/keys (q is lost during that conversion, but the resulting
8108 DH parameters contain its length).
8110 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8111 much faster than DH_generate_parameters (which creates parameters
8112 where p = 2*q + 1), and also the smaller q makes DH computations
8113 much more efficient (160-bit exponentiation instead of 1024-bit
8114 exponentiation); so this provides a convenient way to support DHE
8115 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8116 utter importance to use
8117 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8119 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8120 when such DH parameters are used, because otherwise small subgroup
8121 attacks may become possible!
8124 *) Avoid memory leak in i2d_DHparams.
8127 *) Allow the -k option to be used more than once in the enc program:
8128 this allows the same encrypted message to be read by multiple recipients.
8131 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8132 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8133 it will always use the numerical form of the OID, even if it has a short
8137 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8138 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8139 otherwise bn_mod_exp was called. In the case of hardware keys for example
8140 no private key components need be present and it might store extra data
8141 in the RSA structure, which cannot be accessed from bn_mod_exp.
8142 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8143 private key operations.
8146 *) Added support for SPARC Linux.
8149 *) pem_password_cb function type incompatibly changed from
8150 typedef int pem_password_cb(char *buf, int size, int rwflag);
8152 ....(char *buf, int size, int rwflag, void *userdata);
8153 so that applications can pass data to their callbacks:
8154 The PEM[_ASN1]_{read,write}... functions and macros now take an
8155 additional void * argument, which is just handed through whenever
8156 the password callback is called.
8157 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8159 New function SSL_CTX_set_default_passwd_cb_userdata.
8161 Compatibility note: As many C implementations push function arguments
8162 onto the stack in reverse order, the new library version is likely to
8163 interoperate with programs that have been compiled with the old
8164 pem_password_cb definition (PEM_whatever takes some data that
8165 happens to be on the stack as its last argument, and the callback
8166 just ignores this garbage); but there is no guarantee whatsoever that
8169 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8170 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8171 problems not only on Windows, but also on some Unix platforms.
8172 To avoid problematic command lines, these definitions are now in an
8173 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8174 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8177 *) MIPS III/IV assembler module is reimplemented.
8180 *) More DES library cleanups: remove references to srand/rand and
8181 delete an unused file.
8184 *) Add support for the the free Netwide assembler (NASM) under Win32,
8185 since not many people have MASM (ml) and it can be hard to obtain.
8186 This is currently experimental but it seems to work OK and pass all
8187 the tests. Check out INSTALL.W32 for info.
8190 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8191 without temporary keys kept an extra copy of the server key,
8192 and connections with temporary keys did not free everything in case
8196 *) New function RSA_check_key and new openssl rsa option -check
8197 for verifying the consistency of RSA keys.
8198 [Ulf Moeller, Bodo Moeller]
8200 *) Various changes to make Win32 compile work:
8201 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8202 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8203 comparison" warnings.
8204 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8207 *) Add a debugging option to PKCS#5 v2 key generation function: when
8208 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8209 derived keys are printed to stderr.
8212 *) Copy the flags in ASN1_STRING_dup().
8213 [Roman E. Pavlov <pre@mo.msk.ru>]
8215 *) The x509 application mishandled signing requests containing DSA
8216 keys when the signing key was also DSA and the parameters didn't match.
8218 It was supposed to omit the parameters when they matched the signing key:
8219 the verifying software was then supposed to automatically use the CA's
8220 parameters if they were absent from the end user certificate.
8222 Omitting parameters is no longer recommended. The test was also
8223 the wrong way round! This was probably due to unusual behaviour in
8224 EVP_cmp_parameters() which returns 1 if the parameters match.
8225 This meant that parameters were omitted when they *didn't* match and
8226 the certificate was useless. Certificates signed with 'ca' didn't have
8228 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8230 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8231 The interface is as follows:
8232 Applications can use
8233 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8234 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8235 "off" is now the default.
8236 The library internally uses
8237 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8238 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8239 to disable memory-checking temporarily.
8241 Some inconsistent states that previously were possible (and were
8242 even the default) are now avoided.
8244 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8245 with each memory chunk allocated; this is occasionally more helpful
8246 than just having a counter.
8248 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8250 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8254 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8255 which largely parallels "options", but is for changing API behaviour,
8256 whereas "options" are about protocol behaviour.
8257 Initial "mode" flags are:
8259 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8260 a single record has been written.
8261 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8262 retries use the same buffer location.
8263 (But all of the contents must be
8267 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8270 *) Fix problems with no-hmac etc.
8271 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8273 *) New functions RSA_get_default_method(), RSA_set_method() and
8274 RSA_get_method(). These allows replacement of RSA_METHODs without having
8275 to mess around with the internals of an RSA structure.
8278 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8279 Also really enable memory leak checks in openssl.c and in some
8281 [Chad C. Mulligan, Bodo Moeller]
8283 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8284 up the length of negative integers. This has now been simplified to just
8285 store the length when it is first determined and use it later, rather
8286 than trying to keep track of where data is copied and updating it to
8288 [Steve Henson, reported by Brien Wheeler
8289 <bwheeler@authentica-security.com>]
8291 *) Add a new function PKCS7_signatureVerify. This allows the verification
8292 of a PKCS#7 signature but with the signing certificate passed to the
8293 function itself. This contrasts with PKCS7_dataVerify which assumes the
8294 certificate is present in the PKCS#7 structure. This isn't always the
8295 case: certificates can be omitted from a PKCS#7 structure and be
8296 distributed by "out of band" means (such as a certificate database).
8299 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8300 function prototypes in pem.h, also change util/mkdef.pl to add the
8301 necessary function names.
8304 *) mk1mf.pl (used by Windows builds) did not properly read the
8305 options set by Configure in the top level Makefile, and Configure
8306 was not even able to write more than one option correctly.
8307 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8310 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8311 file to be loaded from a BIO or FILE pointer. The BIO version will
8312 for example allow memory BIOs to contain config info.
8315 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8316 Whoever hopes to achieve shared-library compatibility across versions
8317 must use this, not the compile-time macro.
8318 (Exercise 0.9.4: Which is the minimum library version required by
8320 Note: All this applies only to multi-threaded programs, others don't
8324 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8325 through a BIO pair triggered the default case, i.e.
8326 SSLerr(...,SSL_R_UNKNOWN_STATE).
8329 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8330 can use the SSL library even if none of the specific BIOs is
8334 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8335 for the encoded length.
8336 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8338 *) Add initial documentation of the X509V3 functions.
8341 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8342 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8343 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8344 secure PKCS#8 private key format with a high iteration count.
8347 *) Fix determination of Perl interpreter: A perl or perl5
8348 _directory_ in $PATH was also accepted as the interpreter.
8349 [Ralf S. Engelschall]
8351 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8352 wrong with it but it was very old and did things like calling
8353 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8357 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8358 to use the new extension code.
8361 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8362 with macros. This should make it easier to change their form, add extra
8363 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8367 *) Add to configuration table a new entry that can specify an alternative
8368 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8369 according to Mark Crispin <MRC@Panda.COM>.
8373 *) DES CBC did not update the IV. Weird.
8376 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8377 Changing the behaviour of the former might break existing programs --
8378 where IV updating is needed, des_ncbc_encrypt can be used.
8381 *) When bntest is run from "make test" it drives bc to check its
8382 calculations, as well as internally checking them. If an internal check
8383 fails, it needs to cause bc to give a non-zero result or make test carries
8384 on without noticing the failure. Fixed.
8387 *) DES library cleanups.
8390 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8391 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8392 ciphers. NOTE: although the key derivation function has been verified
8393 against some published test vectors it has not been extensively tested
8394 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8398 *) Instead of "mkdir -p", which is not fully portable, use new
8399 Perl script "util/mkdir-p.pl".
8402 *) Rewrite the way password based encryption (PBE) is handled. It used to
8403 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8404 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8405 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8406 the 'parameter' field of the AlgorithmIdentifier is passed to the
8407 underlying key generation function so it must do its own ASN1 parsing.
8408 This has also changed the EVP_PBE_CipherInit() function which now has a
8409 'parameter' argument instead of literal salt and iteration count values
8410 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8413 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8414 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8415 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8416 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8417 value was just used as a "magic string" and not used directly its
8418 value doesn't matter.
8421 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8425 *) "linux-sparc64" configuration (ultrapenguin).
8426 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8427 "linux-sparc" configuration.
8428 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8430 *) config now generates no-xxx options for missing ciphers.
8433 *) Support the EBCDIC character set (work in progress).
8434 File ebcdic.c not yet included because it has a different license.
8435 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8437 *) Support BS2000/OSD-POSIX.
8438 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8440 *) Make callbacks for key generation use void * instead of char *.
8443 *) Make S/MIME samples compile (not yet tested).
8446 *) Additional typesafe stacks.
8449 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8453 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8455 *) New configuration variant "sco5-gcc".
8457 *) Updated some demos.
8458 [Sean O Riordain, Wade Scholine]
8460 *) Add missing BIO_free at exit of pkcs12 application.
8463 *) Fix memory leak in conf.c.
8466 *) Updates for Win32 to assembler version of MD5.
8469 *) Set #! path to perl in apps/der_chop to where we found it
8470 instead of using a fixed path.
8473 *) SHA library changes for irix64-mips4-cc.
8476 *) Improvements for VMS support.
8480 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8482 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8483 This also avoids the problems with SC4.2 and unpatched SC5.
8484 [Andy Polyakov <appro@fy.chalmers.se>]
8486 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
8487 These are required because of the typesafe stack would otherwise break
8488 existing code. If old code used a structure member which used to be STACK
8489 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
8490 sk_num or sk_value it would produce an error because the num, data members
8491 are not present in STACK_OF. Now it just produces a warning. sk_set
8492 replaces the old method of assigning a value to sk_value
8493 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
8494 that does this will no longer work (and should use sk_set instead) but
8495 this could be regarded as a "questionable" behaviour anyway.
8498 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
8499 correctly handle encrypted S/MIME data.
8502 *) Change type of various DES function arguments from des_cblock
8503 (which means, in function argument declarations, pointer to char)
8504 to des_cblock * (meaning pointer to array with 8 char elements),
8505 which allows the compiler to do more typechecking; it was like
8506 that back in SSLeay, but with lots of ugly casts.
8508 Introduce new type const_des_cblock.
8511 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
8512 problems: find RecipientInfo structure that matches recipient certificate
8513 and initialise the ASN1 structures properly based on passed cipher.
8516 *) Belatedly make the BN tests actually check the results.
8519 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
8520 to and from BNs: it was completely broken. New compilation option
8521 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
8522 key elements as negative integers.
8525 *) Reorganize and speed up MD5.
8526 [Andy Polyakov <appro@fy.chalmers.se>]
8529 [Richard Levitte <richard@levitte.org>]
8531 *) New option -out to asn1parse to allow the parsed structure to be
8532 output to a file. This is most useful when combined with the -strparse
8533 option to examine the output of things like OCTET STRINGS.
8536 *) Make SSL library a little more fool-proof by not requiring any longer
8537 that SSL_set_{accept,connect}_state be called before
8538 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
8539 in many applications because usually everything *appeared* to work as
8540 intended anyway -- now it really works as intended).
8543 *) Move openssl.cnf out of lib/.
8546 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
8547 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
8548 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
8549 [Ralf S. Engelschall]
8551 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
8552 handle PKCS#7 enveloped data properly.
8553 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
8555 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
8556 copying pointers. The cert_st handling is changed by this in
8557 various ways (and thus what used to be known as ctx->default_cert
8558 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
8559 any longer when s->cert does not give us what we need).
8560 ssl_cert_instantiate becomes obsolete by this change.
8561 As soon as we've got the new code right (possibly it already is?),
8562 we have solved a couple of bugs of the earlier code where s->cert
8563 was used as if it could not have been shared with other SSL structures.
8565 Note that using the SSL API in certain dirty ways now will result
8566 in different behaviour than observed with earlier library versions:
8567 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
8568 does not influence s as it used to.
8570 In order to clean up things more thoroughly, inside SSL_SESSION
8571 we don't use CERT any longer, but a new structure SESS_CERT
8572 that holds per-session data (if available); currently, this is
8573 the peer's certificate chain and, for clients, the server's certificate
8574 and temporary key. CERT holds only those values that can have
8575 meaningful defaults in an SSL_CTX.
8578 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
8579 from the internal representation. Various PKCS#7 fixes: remove some
8580 evil casts and set the enc_dig_alg field properly based on the signing
8584 *) Allow PKCS#12 password to be set from the command line or the
8585 environment. Let 'ca' get its config file name from the environment
8586 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
8590 *) Allow certificate policies extension to use an IA5STRING for the
8591 organization field. This is contrary to the PKIX definition but
8592 VeriSign uses it and IE5 only recognises this form. Document 'x509'
8596 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
8597 without disallowing inline assembler and the like for non-pedantic builds.
8600 *) Support Borland C++ builder.
8601 [Janez Jere <jj@void.si>, modified by Ulf Möller]
8606 *) SHA-1 cleanups and performance enhancements.
8607 [Andy Polyakov <appro@fy.chalmers.se>]
8609 *) Sparc v8plus assembler for the bignum library.
8610 [Andy Polyakov <appro@fy.chalmers.se>]
8612 *) Accept any -xxx and +xxx compiler options in Configure.
8615 *) Update HPUX configuration.
8618 *) Add missing sk_<type>_unshift() function to safestack.h
8619 [Ralf S. Engelschall]
8621 *) New function SSL_CTX_use_certificate_chain_file that sets the
8622 "extra_cert"s in addition to the certificate. (This makes sense
8623 only for "PEM" format files, as chains as a whole are not
8627 *) Support verify_depth from the SSL API.
8628 x509_vfy.c had what can be considered an off-by-one-error:
8629 Its depth (which was not part of the external interface)
8630 was actually counting the number of certificates in a chain;
8631 now it really counts the depth.
8634 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
8635 instead of X509err, which often resulted in confusing error
8636 messages since the error codes are not globally unique
8637 (e.g. an alleged error in ssl3_accept when a certificate
8638 didn't match the private key).
8640 *) New function SSL_CTX_set_session_id_context that allows to set a default
8641 value (so that you don't need SSL_set_session_id_context for each
8642 connection using the SSL_CTX).
8645 *) OAEP decoding bug fix.
8648 *) Support INSTALL_PREFIX for package builders, as proposed by
8652 *) New Configure options "threads" and "no-threads". For systems
8653 where the proper compiler options are known (currently Solaris
8654 and Linux), "threads" is the default.
8657 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
8660 *) Install various scripts to $(OPENSSLDIR)/misc, not to
8661 $(INSTALLTOP)/bin -- they shouldn't clutter directories
8662 such as /usr/local/bin.
8665 *) "make linux-shared" to build shared libraries.
8666 [Niels Poppe <niels@netbox.org>]
8668 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
8671 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
8672 extension adding in x509 utility.
8675 *) Remove NOPROTO sections and error code comments.
8678 *) Partial rewrite of the DEF file generator to now parse the ANSI
8682 *) New Configure options --prefix=DIR and --openssldir=DIR.
8685 *) Complete rewrite of the error code script(s). It is all now handled
8686 by one script at the top level which handles error code gathering,
8687 header rewriting and C source file generation. It should be much better
8688 than the old method: it now uses a modified version of Ulf's parser to
8689 read the ANSI prototypes in all header files (thus the old K&R definitions
8690 aren't needed for error creation any more) and do a better job of
8691 translating function codes into names. The old 'ASN1 error code imbedded
8692 in a comment' is no longer necessary and it doesn't use .err files which
8693 have now been deleted. Also the error code call doesn't have to appear all
8694 on one line (which resulted in some large lines...).
8697 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
8700 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
8701 0 (which usually indicates a closed connection), but continue reading.
8704 *) Fix some race conditions.
8707 *) Add support for CRL distribution points extension. Add Certificate
8708 Policies and CRL distribution points documentation.
8711 *) Move the autogenerated header file parts to crypto/opensslconf.h.
8714 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
8715 8 of keying material. Merlin has also confirmed interop with this fix
8716 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
8717 [Merlin Hughes <merlin@baltimore.ie>]
8719 *) Fix lots of warnings.
8720 [Richard Levitte <levitte@stacken.kth.se>]
8722 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
8723 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
8724 [Richard Levitte <levitte@stacken.kth.se>]
8726 *) Fix problems with sizeof(long) == 8.
8727 [Andy Polyakov <appro@fy.chalmers.se>]
8729 *) Change functions to ANSI C.
8732 *) Fix typos in error codes.
8733 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
8735 *) Remove defunct assembler files from Configure.
8738 *) SPARC v8 assembler BIGNUM implementation.
8739 [Andy Polyakov <appro@fy.chalmers.se>]
8741 *) Support for Certificate Policies extension: both print and set.
8742 Various additions to support the r2i method this uses.
8745 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
8746 return a const string when you are expecting an allocated buffer.
8749 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
8750 types DirectoryString and DisplayText.
8753 *) Add code to allow r2i extensions to access the configuration database,
8754 add an LHASH database driver and add several ctx helper functions.
8757 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8758 fail when they extended the size of a BIGNUM.
8761 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8762 support typesafe stack.
8765 *) Fix typo in SSL_[gs]et_options().
8766 [Nils Frostberg <nils@medcom.se>]
8768 *) Delete various functions and files that belonged to the (now obsolete)
8769 old X509V3 handling code.
8772 *) New Configure option "rsaref".
8775 *) Don't auto-generate pem.h.
8778 *) Introduce type-safe ASN.1 SETs.
8781 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8782 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8784 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8785 that links with OpenSSL (well at least cause lots of warnings), but fear
8786 not: the conversion is trivial, and it eliminates loads of evil casts. A
8787 few STACKed things have been converted already. Feel free to convert more.
8788 In the fullness of time, I'll do away with the STACK type altogether.
8791 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8792 specified in <certfile> by updating the entry in the index.txt file.
8793 This way one no longer has to edit the index.txt file manually for
8794 revoking a certificate. The -revoke option does the gory details now.
8795 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8797 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8798 `-text' option at all and this way the `-noout -text' combination was
8799 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8800 [Ralf S. Engelschall]
8802 *) Make sure a corresponding plain text error message exists for the
8803 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8804 verify callback function determined that a certificate was revoked.
8805 [Ralf S. Engelschall]
8807 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8808 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8809 all available cipers including rc5, which was forgotten until now.
8810 In order to let the testing shell script know which algorithms
8811 are available, a new (up to now undocumented) command
8812 "openssl list-cipher-commands" is used.
8815 *) Bugfix: s_client occasionally would sleep in select() when
8816 it should have checked SSL_pending() first.
8819 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8820 the raw DSA values prior to ASN.1 encoding.
8823 *) Tweaks to Configure
8824 [Niels Poppe <niels@netbox.org>]
8826 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8830 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8833 *) New config option to avoid instructions that are illegal on the 80386.
8834 The default code is faster, but requires at least a 486.
8837 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8838 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8839 same as SSL2_VERSION anyway.
8842 *) New "-showcerts" option for s_client.
8845 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8846 application. Various cleanups and fixes.
8849 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8850 modify error routines to work internally. Add error codes and PBE init
8851 to library startup routines.
8854 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8855 packing functions to asn1 and evp. Changed function names and error
8856 codes along the way.
8859 *) PKCS12 integration: and so it begins... First of several patches to
8860 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8861 objects to objects.h
8864 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8865 and display support for Thawte strong extranet extension.
8868 *) Add LinuxPPC support.
8869 [Jeff Dubrule <igor@pobox.org>]
8871 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8872 bn_div_words in alpha.s.
8873 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8875 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8876 OAEP isn't supported when OpenSSL is built with RSAref.
8877 [Ulf Moeller <ulf@fitug.de>]
8879 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8880 so they no longer are missing under -DNOPROTO.
8881 [Soren S. Jorvang <soren@t.dk>]
8884 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8886 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8887 doesn't work when the session is reused. Coming soon!
8890 *) Fix a security hole, that allows sessions to be reused in the wrong
8891 context thus bypassing client cert protection! All software that uses
8892 client certs and session caches in multiple contexts NEEDS PATCHING to
8893 allow session reuse! A fuller solution is in the works.
8894 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8896 *) Some more source tree cleanups (removed obsolete files
8897 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8898 permission on "config" script to be executable) and a fix for the INSTALL
8900 [Ulf Moeller <ulf@fitug.de>]
8902 *) Remove some legacy and erroneous uses of malloc, free instead of
8904 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8906 *) Make rsa_oaep_test return non-zero on error.
8907 [Ulf Moeller <ulf@fitug.de>]
8909 *) Add support for native Solaris shared libraries. Configure
8910 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8911 if someone would make that last step automatic.
8912 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8914 *) ctx_size was not built with the right compiler during "make links". Fixed.
8917 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8918 except NULL ciphers". This means the default cipher list will no longer
8919 enable NULL ciphers. They need to be specifically enabled e.g. with
8920 the string "DEFAULT:eNULL".
8923 *) Fix to RSA private encryption routines: if p < q then it would
8924 occasionally produce an invalid result. This will only happen with
8925 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8928 *) Be less restrictive and allow also `perl util/perlpath.pl
8929 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8930 because this way one can also use an interpreter named `perl5' (which is
8931 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8932 installed as `perl').
8933 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8935 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8936 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8938 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8939 advapi32.lib to Win32 build and change the pem test comparision
8940 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8941 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8942 and crypto/des/ede_cbcm_enc.c.
8945 *) DES quad checksum was broken on big-endian architectures. Fixed.
8948 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8949 Win32 test batch file so it (might) work again. The Win32 test batch file
8950 is horrible: I feel ill....
8953 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8954 in e_os.h. Audit of header files to check ANSI and non ANSI
8955 sections: 10 functions were absent from non ANSI section and not exported
8956 from Windows DLLs. Fixed up libeay.num for new functions.
8959 *) Make `openssl version' output lines consistent.
8960 [Ralf S. Engelschall]
8962 *) Fix Win32 symbol export lists for BIO functions: Added
8963 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8964 to ms/libeay{16,32}.def.
8965 [Ralf S. Engelschall]
8967 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8968 fine under Unix and passes some trivial tests I've now added. But the
8969 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8970 added to make sure no one expects that this stuff really works in the
8971 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8972 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8974 [Ralf S. Engelschall]
8976 *) Fix the generation of two part addresses in perl.
8977 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8979 *) Add config entry for Linux on MIPS.
8980 [John Tobey <jtobey@channel1.com>]
8982 *) Make links whenever Configure is run, unless we are on Windoze.
8985 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8986 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8990 *) Add a useful kludge to allow package maintainers to specify compiler and
8991 other platforms details on the command line without having to patch the
8992 Configure script everytime: One now can use ``perl Configure
8993 <id>:<details>'', i.e. platform ids are allowed to have details appended
8994 to them (seperated by colons). This is treated as there would be a static
8995 pre-configured entry in Configure's %table under key <id> with value
8996 <details> and ``perl Configure <id>'' is called. So, when you want to
8997 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8998 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8999 now, which overrides the FreeBSD-elf entry on-the-fly.
9000 [Ralf S. Engelschall]
9002 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9005 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9006 on the `perl Configure ...' command line. This way one can compile
9007 OpenSSL libraries with Position Independent Code (PIC) which is needed
9008 for linking it into DSOs.
9009 [Ralf S. Engelschall]
9011 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9015 *) Cleaned up the LICENSE document: The official contact for any license
9016 questions now is the OpenSSL core team under openssl-core@openssl.org.
9017 And add a paragraph about the dual-license situation to make sure people
9018 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9019 to the OpenSSL toolkit.
9020 [Ralf S. Engelschall]
9022 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9023 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9024 Additonally cleaned up the `make links' target: Remove unnecessary
9025 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9026 to speed processing and no longer clutter the display with confusing
9027 stuff. Instead only the actually done links are displayed.
9028 [Ralf S. Engelschall]
9030 *) Permit null encryption ciphersuites, used for authentication only. It used
9031 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9032 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9036 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9037 signed attributes when verifying signatures (this would break them),
9038 the detached data encoding was wrong and public keys obtained using
9039 X509_get_pubkey() weren't freed.
9042 *) Add text documentation for the BUFFER functions. Also added a work around
9043 to a Win95 console bug. This was triggered by the password read stuff: the
9044 last character typed gets carried over to the next fread(). If you were
9045 generating a new cert request using 'req' for example then the last
9046 character of the passphrase would be CR which would then enter the first
9050 *) Added the new `Includes OpenSSL Cryptography Software' button as
9051 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9052 button and can be used by applications based on OpenSSL to show the
9053 relationship to the OpenSSL project.
9054 [Ralf S. Engelschall]
9056 *) Remove confusing variables in function signatures in files
9057 ssl/ssl_lib.c and ssl/ssl.h.
9058 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9060 *) Don't install bss_file.c under PREFIX/include/
9061 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9063 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9064 functions that return function pointers and has support for NT specific
9065 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9066 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9067 unsigned to signed types: this was killing the Win32 compile.
9070 *) Add new certificate file to stack functions,
9071 SSL_add_dir_cert_subjects_to_stack() and
9072 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9073 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9074 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9075 This means that Apache-SSL and similar packages don't have to mess around
9076 to add as many CAs as they want to the preferred list.
9079 *) Experiment with doxygen documentation. Currently only partially applied to
9081 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9082 openssl.doxy as the configuration file.
9085 *) Get rid of remaining C++-style comments which strict C compilers hate.
9086 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9088 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9089 compiled in by default: it has problems with large keys.
9092 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9093 DH private keys and/or callback functions which directly correspond to
9094 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9095 is needed for applications which have to configure certificates on a
9096 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9098 For the RSA certificate situation is makes no difference, but
9099 for the DSA certificate situation this fixes the "no shared cipher"
9100 problem where the OpenSSL cipher selection procedure failed because the
9101 temporary keys were not overtaken from the context and the API provided
9102 no way to reconfigure them.
9103 The new functions now let applications reconfigure the stuff and they
9104 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9105 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9106 non-public-API function ssl_cert_instantiate() is used as a helper
9107 function and also to reduce code redundancy inside ssl_rsa.c.
9108 [Ralf S. Engelschall]
9110 *) Move s_server -dcert and -dkey options out of the undocumented feature
9111 area because they are useful for the DSA situation and should be
9112 recognized by the users.
9113 [Ralf S. Engelschall]
9115 *) Fix the cipher decision scheme for export ciphers: the export bits are
9116 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9117 SSL_EXP_MASK. So, the original variable has to be used instead of the
9118 already masked variable.
9119 [Richard Levitte <levitte@stacken.kth.se>]
9121 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9122 [Richard Levitte <levitte@stacken.kth.se>]
9124 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9125 from `int' to `unsigned int' because it's a length and initialized by
9126 EVP_DigestFinal() which expects an `unsigned int *'.
9127 [Richard Levitte <levitte@stacken.kth.se>]
9129 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9130 script. Instead use the usual Shell->Perl transition trick.
9131 [Ralf S. Engelschall]
9133 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9134 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9135 -noout -modulus' as it's already the case for `openssl rsa -noout
9136 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9137 currently the public key is printed (a decision which was already done by
9138 `openssl dsa -modulus' in the past) which serves a similar purpose.
9139 Additionally the NO_RSA no longer completely removes the whole -modulus
9140 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9142 [Ralf S. Engelschall]
9144 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9145 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9146 [Arne Ansper <arne@ats.cyber.ee>]
9148 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9149 to be added. Now both 'req' and 'ca' can use new objects defined in the
9153 *) Add cool BIO that does syslog (or event log on NT).
9154 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9156 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9157 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9158 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9159 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9162 *) Add preliminary config info for new extension code.
9165 *) Make RSA_NO_PADDING really use no padding.
9166 [Ulf Moeller <ulf@fitug.de>]
9168 *) Generate errors when private/public key check is done.
9171 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9172 for some CRL extensions and new objects added.
9175 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9176 key usage extension and fuller support for authority key id.
9179 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9180 padding method for RSA, which is recommended for new applications in PKCS
9181 #1 v2.0 (RFC 2437, October 1998).
9182 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9183 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9184 against Bleichbacher's attack on RSA.
9185 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9188 *) Updates to the new SSL compression code
9189 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9191 *) Fix so that the version number in the master secret, when passed
9192 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9193 (because the server will not accept higher), that the version number
9194 is 0x03,0x01, not 0x03,0x00
9195 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9197 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9198 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9199 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9202 *) Support for RAW extensions where an arbitrary extension can be
9203 created by including its DER encoding. See apps/openssl.cnf for
9207 *) Make sure latest Perl versions don't interpret some generated C array
9208 code as Perl array code in the crypto/err/err_genc.pl script.
9209 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9211 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9212 not many people have the assembler. Various Win32 compilation fixes and
9213 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9217 *) Modify configure script 'Configure' to automatically create crypto/date.h
9218 file under Win32 and also build pem.h from pem.org. New script
9219 util/mkfiles.pl to create the MINFO file on environments that can't do a
9220 'make files': perl util/mkfiles.pl >MINFO should work.
9223 *) Major rework of DES function declarations, in the pursuit of correctness
9224 and purity. As a result, many evil casts evaporated, and some weirdness,
9225 too. You may find this causes warnings in your code. Zapping your evil
9226 casts will probably fix them. Mostly.
9229 *) Fix for a typo in asn1.h. Bug fix to object creation script
9230 obj_dat.pl. It considered a zero in an object definition to mean
9231 "end of object": none of the objects in objects.h have any zeros
9232 so it wasn't spotted.
9233 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9235 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9236 Masking (CBCM). In the absence of test vectors, the best I have been able
9237 to do is check that the decrypt undoes the encrypt, so far. Send me test
9238 vectors if you have them.
9241 *) Correct calculation of key length for export ciphers (too much space was
9242 allocated for null ciphers). This has not been tested!
9245 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9246 message is now correct (it understands "crypto" and "ssl" on its
9247 command line). There is also now an "update" option. This will update
9248 the util/ssleay.num and util/libeay.num files with any new functions.
9250 perl util/mkdef.pl crypto ssl update
9251 it will update them.
9254 *) Overhauled the Perl interface (perl/*):
9255 - ported BN stuff to OpenSSL's different BN library
9256 - made the perl/ source tree CVS-aware
9257 - renamed the package from SSLeay to OpenSSL (the files still contain
9258 their history because I've copied them in the repository)
9259 - removed obsolete files (the test scripts will be replaced
9260 by better Test::Harness variants in the future)
9261 [Ralf S. Engelschall]
9263 *) First cut for a very conservative source tree cleanup:
9264 1. merge various obsolete readme texts into doc/ssleay.txt
9265 where we collect the old documents and readme texts.
9266 2. remove the first part of files where I'm already sure that we no
9267 longer need them because of three reasons: either they are just temporary
9268 files which were left by Eric or they are preserved original files where
9269 I've verified that the diff is also available in the CVS via "cvs diff
9270 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9271 the crypto/md/ stuff).
9272 [Ralf S. Engelschall]
9274 *) More extension code. Incomplete support for subject and issuer alt
9275 name, issuer and authority key id. Change the i2v function parameters
9276 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9277 what that's for :-) Fix to ASN1 macro which messed up
9278 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9281 *) Preliminary support for ENUMERATED type. This is largely copied from the
9285 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9286 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9288 *) Make sure `make rehash' target really finds the `openssl' program.
9289 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9291 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9292 like to hear about it if this slows down other processors.
9295 *) Add CygWin32 platform information to Configure script.
9296 [Alan Batie <batie@aahz.jf.intel.com>]
9298 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9299 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9301 *) New program nseq to manipulate netscape certificate sequences
9304 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9308 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9309 but the BN code had some problems that would cause failures when
9310 doing certificate verification and some other functions.
9311 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9313 *) Add ASN1 and PEM code to support netscape certificate sequences.
9316 *) Add ASN1 and PEM code to support netscape certificate sequences.
9319 *) Add several PKIX and private extended key usage OIDs.
9322 *) Modify the 'ca' program to handle the new extension code. Modify
9323 openssl.cnf for new extension format, add comments.
9326 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9327 and add a sample to openssl.cnf so req -x509 now adds appropriate
9331 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9332 error code, add initial support to X509_print() and x509 application.
9335 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9336 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9337 stuff is currently isolated and isn't even compiled yet.
9340 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9341 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9342 Removed the versions check from X509 routines when loading extensions:
9343 this allows certain broken certificates that don't set the version
9344 properly to be processed.
9347 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9348 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9349 can still be regenerated with "make depend".
9352 *) Spelling mistake in C version of CAST-128.
9353 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9355 *) Changes to the error generation code. The perl script err-code.pl
9356 now reads in the old error codes and retains the old numbers, only
9357 adding new ones if necessary. It also only changes the .err files if new
9358 codes are added. The makefiles have been modified to only insert errors
9359 when needed (to avoid needlessly modifying header files). This is done
9360 by only inserting errors if the .err file is newer than the auto generated
9361 C file. To rebuild all the error codes from scratch (the old behaviour)
9362 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9363 or delete all the .err files.
9366 *) CAST-128 was incorrectly implemented for short keys. The C version has
9367 been fixed, but is untested. The assembler versions are also fixed, but
9368 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9369 to regenerate it if needed.
9370 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9371 Hagino <itojun@kame.net>]
9373 *) File was opened incorrectly in randfile.c.
9374 [Ulf Möller <ulf@fitug.de>]
9376 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9377 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9378 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9379 al: it's just almost always a UTCTime. Note this patch adds new error
9380 codes so do a "make errors" if there are problems.
9383 *) Correct Linux 1 recognition in config.
9384 [Ulf Möller <ulf@fitug.de>]
9386 *) Remove pointless MD5 hash when using DSA keys in ca.
9387 [Anonymous <nobody@replay.com>]
9389 *) Generate an error if given an empty string as a cert directory. Also
9390 generate an error if handed NULL (previously returned 0 to indicate an
9391 error, but didn't set one).
9392 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9394 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9397 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9398 parameters. This was causing a warning which killed off the Win32 compile.
9401 *) Remove C++ style comments from crypto/bn/bn_local.h.
9402 [Neil Costigan <neil.costigan@celocom.com>]
9404 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9405 based on a text string, looking up short and long names and finally
9406 "dot" format. The "dot" format stuff didn't work. Added new function
9407 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9408 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9409 OID is not part of the table.
9412 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9413 X509_LOOKUP_by_alias().
9416 *) Sort openssl functions by name.
9419 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9420 encryption from sample DSA keys (in case anyone is interested the password
9424 *) Make _all_ *_free functions accept a NULL pointer.
9425 [Frans Heymans <fheymans@isaserver.be>]
9427 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9429 [Anonymous <nobody@replay.com>]
9431 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9432 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9434 *) Don't blow it for numeric -newkey arguments to apps/req.
9435 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9437 *) Temp key "for export" tests were wrong in s3_srvr.c.
9438 [Anonymous <nobody@replay.com>]
9440 *) Add prototype for temp key callback functions
9441 SSL_CTX_set_tmp_{rsa,dh}_callback().
9444 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9445 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9448 *) X509_name_add_entry() freed the wrong thing after an error.
9449 [Arne Ansper <arne@ats.cyber.ee>]
9451 *) rsa_eay.c would attempt to free a NULL context.
9452 [Arne Ansper <arne@ats.cyber.ee>]
9454 *) BIO_s_socket() had a broken should_retry() on Windoze.
9455 [Arne Ansper <arne@ats.cyber.ee>]
9457 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9458 [Arne Ansper <arne@ats.cyber.ee>]
9460 *) Make sure the already existing X509_STORE->depth variable is initialized
9461 in X509_STORE_new(), but document the fact that this variable is still
9462 unused in the certificate verification process.
9463 [Ralf S. Engelschall]
9465 *) Fix the various library and apps files to free up pkeys obtained from
9466 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9469 *) Fix reference counting in X509_PUBKEY_get(). This makes
9470 demos/maurice/example2.c work, amongst others, probably.
9471 [Steve Henson and Ben Laurie]
9473 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9474 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9475 are no longer created. This way we have a single and consistent command
9476 line interface `openssl <command>', similar to `cvs <command>'.
9477 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9479 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9480 BIT STRING wrapper always have zero unused bits.
9483 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
9486 *) Make the top-level INSTALL documentation easier to understand.
9489 *) Makefiles updated to exit if an error occurs in a sub-directory
9490 make (including if user presses ^C) [Paul Sutton]
9492 *) Make Montgomery context stuff explicit in RSA data structure.
9495 *) Fix build order of pem and err to allow for generated pem.h.
9498 *) Fix renumbering bug in X509_NAME_delete_entry().
9501 *) Enhanced the err-ins.pl script so it makes the error library number
9502 global and can add a library name. This is needed for external ASN1 and
9503 other error libraries.
9506 *) Fixed sk_insert which never worked properly.
9509 *) Fix ASN1 macros so they can handle indefinite length construted
9510 EXPLICIT tags. Some non standard certificates use these: they can now
9514 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
9515 into a single doc/ssleay.txt bundle. This way the information is still
9516 preserved but no longer messes up this directory. Now it's new room for
9517 the new set of documenation files.
9518 [Ralf S. Engelschall]
9520 *) SETs were incorrectly DER encoded. This was a major pain, because they
9521 shared code with SEQUENCEs, which aren't coded the same. This means that
9522 almost everything to do with SETs or SEQUENCEs has either changed name or
9523 number of arguments.
9524 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
9526 *) Fix test data to work with the above.
9529 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
9530 was already fixed by Eric for 0.9.1 it seems.
9531 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
9533 *) Autodetect FreeBSD3.
9536 *) Fix various bugs in Configure. This affects the following platforms:
9540 unixware-2.0-pentium
9544 *) Eliminate generated files from CVS. Reorder tests to regenerate files
9545 before they are needed.
9548 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
9552 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
9554 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
9555 changed SSLeay to OpenSSL in version strings.
9556 [Ralf S. Engelschall]
9558 *) Some fixups to the top-level documents.
9561 *) Fixed the nasty bug where rsaref.h was not found under compile-time
9562 because the symlink to include/ was missing.
9563 [Ralf S. Engelschall]
9565 *) Incorporated the popular no-RSA/DSA-only patches
9566 which allow to compile a RSA-free SSLeay.
9567 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
9569 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
9570 when "ssleay" is still not found.
9571 [Ralf S. Engelschall]
9573 *) Added more platforms to Configure: Cray T3E, HPUX 11,
9574 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
9576 *) Updated the README file.
9577 [Ralf S. Engelschall]
9579 *) Added various .cvsignore files in the CVS repository subdirs
9580 to make a "cvs update" really silent.
9581 [Ralf S. Engelschall]
9583 *) Recompiled the error-definition header files and added
9584 missing symbols to the Win32 linker tables.
9585 [Ralf S. Engelschall]
9587 *) Cleaned up the top-level documents;
9588 o new files: CHANGES and LICENSE
9589 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
9590 o merged COPYRIGHT into LICENSE
9591 o removed obsolete TODO file
9592 o renamed MICROSOFT to INSTALL.W32
9593 [Ralf S. Engelschall]
9595 *) Removed dummy files from the 0.9.1b source tree:
9596 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
9597 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
9598 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
9599 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
9600 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
9601 [Ralf S. Engelschall]
9603 *) Added various platform portability fixes.
9606 *) The Genesis of the OpenSSL rpject:
9607 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
9608 Young and Tim J. Hudson created while they were working for C2Net until
9610 [The OpenSSL Project]
9613 Changes between 0.9.0b and 0.9.1b [not released]
9615 *) Updated a few CA certificates under certs/
9618 *) Changed some BIGNUM api stuff.
9621 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
9622 DGUX x86, Linux Alpha, etc.
9625 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
9626 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
9630 *) Add -strparse option to asn1pars program which parses nested
9632 [Dr Stephen Henson <shenson@bigfoot.com>]
9634 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
9637 *) DSA fix for "ca" program.
9640 *) Added "-genkey" option to "dsaparam" program.
9643 *) Added RIPE MD160 (rmd160) message digest.
9646 *) Added -a (all) option to "ssleay version" command.
9649 *) Added PLATFORM define which is the id given to Configure.
9652 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
9655 *) Extended the ASN.1 parser routines.
9658 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
9661 *) Added a BN_CTX to the BN library.
9664 *) Fixed the weak key values in DES library
9667 *) Changed API in EVP library for cipher aliases.
9670 *) Added support for RC2/64bit cipher.
9673 *) Converted the lhash library to the crypto/mem.c functions.
9676 *) Added more recognized ASN.1 object ids.
9679 *) Added more RSA padding checks for SSL/TLS.
9682 *) Added BIO proxy/filter functionality.
9685 *) Added extra_certs to SSL_CTX which can be used
9686 send extra CA certificates to the client in the CA cert chain sending
9687 process. It can be configured with SSL_CTX_add_extra_chain_cert().
9690 *) Now Fortezza is denied in the authentication phase because
9691 this is key exchange mechanism is not supported by SSLeay at all.
9694 *) Additional PKCS1 checks.
9697 *) Support the string "TLSv1" for all TLS v1 ciphers.
9700 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
9701 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
9704 *) Fixed a few memory leaks.
9707 *) Fixed various code and comment typos.
9710 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
9711 bytes sent in the client random.
9712 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob