5 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
7 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
9 This work was sponsored by Intel.
12 *) Add GCM support to TLS library. Some custom code is needed to split
13 the IV between the fixed (from PRF) and explicit (from TLS record)
14 portions. This adds all GCM ciphersuites supported by RFC5288 and
15 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
16 add a special AESGCM string for GCM only.
19 *) Expand range of ctrls for AES GCM. Permit setting invocation
20 field on decrypt and retrieval of invocation field only on encrypt.
23 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
24 As required by RFC5289 these ciphersuites cannot be used if for
25 versions of TLS earlier than 1.2.
28 *) For FIPS capable OpenSSL interpret a NULL default public key method
29 as unset and return the appopriate default but do *not* set the default.
30 This means we can return the appopriate method in applications that
31 swicth between FIPS and non-FIPS modes.
34 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
35 ENGINE is used then we cannot handle that in the FIPS module so we
36 keep original code iff non-FIPS operations are allowed.
39 *) Add -attime option to openssl verify.
40 [Peter Eckersley <pde@eff.org> and Ben Laurie]
42 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
45 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
46 FIPS EC methods unconditionally for now.
49 *) New build option no-ec2m to disable characteristic 2 code.
52 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
53 all cases can be covered as some introduce binary incompatibilities.
56 *) Redirect RSA operations to FIPS module including keygen,
57 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
60 *) Add similar low level API blocking to ciphers.
63 *) Low level digest APIs are not approved in FIPS mode: any attempt
64 to use these will cause a fatal error. Applications that *really* want
65 to use them can use the private_* version instead.
68 *) Redirect cipher operations to FIPS module for FIPS builds.
71 *) Redirect digest operations to FIPS module for FIPS builds.
74 *) Update build system to add "fips" flag which will link in fipscanister.o
75 for static and shared library builds embedding a signature if needed.
78 *) Output TLS supported curves in preference order instead of numerical
79 order. This is currently hardcoded for the highest order curves first.
80 This should be configurable so applications can judge speed vs strength.
83 *) Add TLS v1.2 server support for client authentication.
86 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
90 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
91 FIPS modules versions.
94 *) Add TLS v1.2 client side support for client authentication. Keep cache
95 of handshake records longer as we don't know the hash algorithm to use
96 until after the certificate request message is received.
99 *) Initial TLS v1.2 client support. Add a default signature algorithms
100 extension including all the algorithms we support. Parse new signature
101 format in client key exchange. Relax some ECC signing restrictions for
102 TLS v1.2 as indicated in RFC5246.
105 *) Add server support for TLS v1.2 signature algorithms extension. Switch
106 to new signature format when needed using client digest preference.
107 All server ciphersuites should now work correctly in TLS v1.2. No client
108 support yet and no support for client certificates.
111 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
112 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
113 ciphersuites. At present only RSA key exchange ciphersuites work with
114 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
115 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
116 and version checking.
119 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
120 with this defined it will not be affected by any changes to ssl internal
121 structures. Add several utility functions to allow openssl application
122 to work with OPENSSL_NO_SSL_INTERN defined.
126 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
128 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
131 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
132 elliptic curve NIST-P224 with constant-time single point multiplication on
133 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
134 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
135 flexible implementations).
137 The implementation requires support for the nonstandard type __uint128_t,
138 and so is disabled by default. To include this in your build of OpenSSL,
139 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
140 and run "make depend" (or "make update").
141 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
143 *) Permit abbreviated handshakes when renegotiating using the function
144 SSL_renegotiate_abbreviated().
145 [Robin Seggelmann <seggelmann@fh-muenster.de>]
147 *) Add call to ENGINE_register_all_complete() to
148 ENGINE_load_builtin_engines(), so some implementations get used
149 automatically instead of needing explicit application support.
152 *) Add support for TLS key exporter as described in RFC5705.
153 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
155 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
156 a few changes are required:
158 Add SSL_OP_NO_TLSv1_1 flag.
160 Update version checking logic to handle version 1.1.
161 Add explicit IV handling (ported from DTLS code).
162 Add command line options to s_client/s_server.
165 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
167 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
168 for multi-threaded use of ECDH.
169 [Adam Langley (Google)]
171 *) Fix x509_name_ex_d2i memory leak on bad inputs.
174 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
175 signature public key algorithm by using OID xref utilities instead.
176 Before this you could only use some ECC ciphersuites with SHA1 only.
179 *) Add protection against ECDSA timing attacks as mentioned in the paper
180 by Billy Bob Brumley and Nicola Tuveri, see:
182 http://eprint.iacr.org/2011/232.pdf
184 [Billy Bob Brumley and Nicola Tuveri]
186 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
188 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
189 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
191 *) Fix bug in string printing code: if *any* escaping is enabled we must
192 escape the escape character (backslash) or the resulting string is
196 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
198 *) Disable code workaround for ancient and obsolete Netscape browsers
199 and servers: an attacker can use it in a ciphersuite downgrade attack.
200 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
203 *) Fixed J-PAKE implementation error, originally discovered by
204 Sebastien Martini, further info and confirmation from Stefan
205 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
208 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
210 *) Fix extension code to avoid race conditions which can result in a buffer
211 overrun vulnerability: resumed sessions must not be modified as they can
212 be shared by multiple threads. CVE-2010-3864
215 *) Fix WIN32 build system to correctly link an ENGINE directory into
219 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
221 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
223 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
225 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
227 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
228 context. The operation can be customised via the ctrl mechanism in
229 case ENGINEs want to include additional functionality.
232 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
235 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
236 output hashes compatible with older versions of OpenSSL.
237 [Willy Weisz <weisz@vcpc.univie.ac.at>]
239 *) Fix compression algorithm handling: if resuming a session use the
240 compression algorithm of the resumed session instead of determining
241 it from client hello again. Don't allow server to change algorithm.
244 *) Add load_crls() function to apps tidying load_certs() too. Add option
245 to verify utility to allow additional CRLs to be included.
248 *) Update OCSP request code to permit adding custom headers to the request:
249 some responders need this.
252 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
254 [Julia Lawall <julia@diku.dk>]
256 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
257 needlessly dereferenced structures, used obsolete functions and
258 didn't handle all updated verify codes correctly.
261 *) Disable MD2 in the default configuration.
264 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
265 indicate the initial BIO being pushed or popped. This makes it possible
266 to determine whether the BIO is the one explicitly called or as a result
267 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
268 it handles reference counts correctly and doesn't zero out the I/O bio
269 when it is not being explicitly popped. WARNING: applications which
270 included workarounds for the old buggy behaviour will need to be modified
271 or they could free up already freed BIOs.
274 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
275 renaming to all platforms (within the 0.9.8 branch, this was
276 done conditionally on Netware platforms to avoid a name clash).
277 [Guenter <lists@gknw.net>]
279 *) Add ECDHE and PSK support to DTLS.
280 [Michael Tuexen <tuexen@fh-muenster.de>]
282 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
286 *) Add "missing" function EVP_MD_flags() (without this the only way to
287 retrieve a digest flags is by accessing the structure directly. Update
288 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
289 or cipher is registered as in the "from" argument. Print out all
290 registered digests in the dgst usage message instead of manually
291 attempting to work them out.
294 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
295 this allows the use of compression and extensions. Change default cipher
296 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
297 by default unless an application cipher string requests it.
300 *) Alter match criteria in PKCS12_parse(). It used to try to use local
301 key ids to find matching certificates and keys but some PKCS#12 files
302 don't follow the (somewhat unwritten) rules and this strategy fails.
303 Now just gather all certificates together and the first private key
304 then look for the first certificate that matches the key.
307 *) Support use of registered digest and cipher names for dgst and cipher
308 commands instead of having to add each one as a special case. So now
315 openssl dgst -sha256 foo
317 and this works for ENGINE based algorithms too.
321 *) Update Gost ENGINE to support parameter files.
322 [Victor B. Wagner <vitus@cryptocom.ru>]
324 *) Support GeneralizedTime in ca utility.
325 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
327 *) Enhance the hash format used for certificate directory links. The new
328 form uses the canonical encoding (meaning equivalent names will work
329 even if they aren't identical) and uses SHA1 instead of MD5. This form
330 is incompatible with the older format and as a result c_rehash should
331 be used to rebuild symbolic links.
334 *) Make PKCS#8 the default write format for private keys, replacing the
335 traditional format. This form is standardised, more secure and doesn't
336 include an implicit MD5 dependency.
339 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
340 committed to OpenSSL should pass this lot as a minimum.
343 *) Add session ticket override functionality for use by EAP-FAST.
344 [Jouni Malinen <j@w1.fi>]
346 *) Modify HMAC functions to return a value. Since these can be implemented
347 in an ENGINE errors can occur.
350 *) Type-checked OBJ_bsearch_ex.
353 *) Type-checked OBJ_bsearch. Also some constification necessitated
354 by type-checking. Still to come: TXT_DB, bsearch(?),
355 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
359 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
360 seconds to a tm structure directly, instead of going through OS
361 specific date routines. This avoids any issues with OS routines such
362 as the year 2038 bug. New *_adj() functions for ASN1 time structures
363 and X509_time_adj_ex() to cover the extended range. The existing
364 X509_time_adj() is still usable and will no longer have any date issues.
367 *) Delta CRL support. New use deltas option which will attempt to locate
368 and search any appropriate delta CRLs available.
370 This work was sponsored by Google.
373 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
374 code and add additional score elements. Validate alternate CRL paths
375 as part of the CRL checking and indicate a new error "CRL path validation
376 error" in this case. Applications wanting additional details can use
377 the verify callback and check the new "parent" field. If this is not
378 NULL CRL path validation is taking place. Existing applications wont
379 see this because it requires extended CRL support which is off by
382 This work was sponsored by Google.
385 *) Support for freshest CRL extension.
387 This work was sponsored by Google.
390 *) Initial indirect CRL support. Currently only supported in the CRLs
391 passed directly and not via lookup. Process certificate issuer
392 CRL entry extension and lookup CRL entries by bother issuer name
393 and serial number. Check and process CRL issuer entry in IDP extension.
395 This work was sponsored by Google.
398 *) Add support for distinct certificate and CRL paths. The CRL issuer
399 certificate is validated separately in this case. Only enabled if
400 an extended CRL support flag is set: this flag will enable additional
401 CRL functionality in future.
403 This work was sponsored by Google.
406 *) Add support for policy mappings extension.
408 This work was sponsored by Google.
411 *) Fixes to pathlength constraint, self issued certificate handling,
412 policy processing to align with RFC3280 and PKITS tests.
414 This work was sponsored by Google.
417 *) Support for name constraints certificate extension. DN, email, DNS
418 and URI types are currently supported.
420 This work was sponsored by Google.
423 *) To cater for systems that provide a pointer-based thread ID rather
424 than numeric, deprecate the current numeric thread ID mechanism and
425 replace it with a structure and associated callback type. This
426 mechanism allows a numeric "hash" to be extracted from a thread ID in
427 either case, and on platforms where pointers are larger than 'long',
428 mixing is done to help ensure the numeric 'hash' is usable even if it
429 can't be guaranteed unique. The default mechanism is to use "&errno"
430 as a pointer-based thread ID to distinguish between threads.
432 Applications that want to provide their own thread IDs should now use
433 CRYPTO_THREADID_set_callback() to register a callback that will call
434 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
436 Note that ERR_remove_state() is now deprecated, because it is tied
437 to the assumption that thread IDs are numeric. ERR_remove_state(0)
438 to free the current thread's error state should be replaced by
439 ERR_remove_thread_state(NULL).
441 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
442 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
443 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
444 application was previously providing a numeric thread callback that
445 was inappropriate for distinguishing threads, then uniqueness might
446 have been obtained with &errno that happened immediately in the
447 intermediate development versions of OpenSSL; this is no longer the
448 case, the numeric thread callback will now override the automatic use
450 [Geoff Thorpe, with help from Bodo Moeller]
452 *) Initial support for different CRL issuing certificates. This covers a
453 simple case where the self issued certificates in the chain exist and
454 the real CRL issuer is higher in the existing chain.
456 This work was sponsored by Google.
459 *) Removed effectively defunct crypto/store from the build.
462 *) Revamp of STACK to provide stronger type-checking. Still to come:
463 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
464 ASN1_STRING, CONF_VALUE.
467 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
468 RAM on SSL connections. This option can save about 34k per idle SSL.
471 *) Revamp of LHASH to provide stronger type-checking. Still to come:
472 STACK, TXT_DB, bsearch, qsort.
475 *) Initial support for Cryptographic Message Syntax (aka CMS) based
476 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
477 support for data, signedData, compressedData, digestedData and
478 encryptedData, envelopedData types included. Scripts to check against
479 RFC4134 examples draft and interop and consistency checks of many
480 content types and variants.
483 *) Add options to enc utility to support use of zlib compression BIO.
486 *) Extend mk1mf to support importing of options and assembly language
487 files from Configure script, currently only included in VC-WIN32.
488 The assembly language rules can now optionally generate the source
489 files from the associated perl scripts.
492 *) Implement remaining functionality needed to support GOST ciphersuites.
493 Interop testing has been performed using CryptoPro implementations.
494 [Victor B. Wagner <vitus@cryptocom.ru>]
496 *) s390x assembler pack.
499 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
503 *) Implement Opaque PRF Input TLS extension as specified in
504 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
505 official specification yet and no extension type assignment by
506 IANA exists, this extension (for now) will have to be explicitly
507 enabled when building OpenSSL by providing the extension number
508 to use. For example, specify an option
510 -DTLSEXT_TYPE_opaque_prf_input=0x9527
512 to the "config" or "Configure" script to enable the extension,
513 assuming extension number 0x9527 (which is a completely arbitrary
514 and unofficial assignment based on the MD5 hash of the Internet
515 Draft). Note that by doing so, you potentially lose
516 interoperability with other TLS implementations since these might
517 be using the same extension number for other purposes.
519 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
520 opaque PRF input value to use in the handshake. This will create
521 an interal copy of the length-'len' string at 'src', and will
522 return non-zero for success.
524 To get more control and flexibility, provide a callback function
527 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
528 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
532 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
535 Callback function 'cb' will be called in handshakes, and is
536 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
537 Argument 'arg' is for application purposes (the value as given to
538 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
539 be provided to the callback function). The callback function
540 has to return non-zero to report success: usually 1 to use opaque
541 PRF input just if possible, or 2 to enforce use of the opaque PRF
542 input. In the latter case, the library will abort the handshake
543 if opaque PRF input is not successfully negotiated.
545 Arguments 'peerinput' and 'len' given to the callback function
546 will always be NULL and 0 in the case of a client. A server will
547 see the client's opaque PRF input through these variables if
548 available (NULL and 0 otherwise). Note that if the server
549 provides an opaque PRF input, the length must be the same as the
550 length of the client's opaque PRF input.
552 Note that the callback function will only be called when creating
553 a new session (session resumption can resume whatever was
554 previously negotiated), and will not be called in SSL 2.0
555 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
556 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
557 for applications that need to enforce opaque PRF input.
561 *) Update ssl code to support digests other than SHA1+MD5 for handshake
564 [Victor B. Wagner <vitus@cryptocom.ru>]
566 *) Add RFC4507 support to OpenSSL. This includes the corrections in
567 RFC4507bis. The encrypted ticket format is an encrypted encoded
568 SSL_SESSION structure, that way new session features are automatically
571 If a client application caches session in an SSL_SESSION structure
572 support is transparent because tickets are now stored in the encoded
575 The SSL_CTX structure automatically generates keys for ticket
576 protection in servers so again support should be possible
577 with no application modification.
579 If a client or server wishes to disable RFC4507 support then the option
580 SSL_OP_NO_TICKET can be set.
582 Add a TLS extension debugging callback to allow the contents of any client
583 or server extensions to be examined.
585 This work was sponsored by Google.
588 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
589 OpenSSL should now compile cleanly on gcc 4.2
590 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
592 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
593 support including streaming MAC support: this is required for GOST
595 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
597 *) Add option -stream to use PKCS#7 streaming in smime utility. New
598 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
599 to output in BER and PEM format.
602 *) Experimental support for use of HMAC via EVP_PKEY interface. This
603 allows HMAC to be handled via the EVP_DigestSign*() interface. The
604 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
605 ENGINE support for HMAC keys which are unextractable. New -mac and
606 -macopt options to dgst utility.
609 *) New option -sigopt to dgst utility. Update dgst to use
610 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
611 alternative signing paramaters such as X9.31 or PSS in the dgst
615 *) Change ssl_cipher_apply_rule(), the internal function that does
616 the work each time a ciphersuite string requests enabling
617 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
618 removing ("!foo+bar") a class of ciphersuites: Now it maintains
619 the order of disabled ciphersuites such that those ciphersuites
620 that most recently went from enabled to disabled not only stay
621 in order with respect to each other, but also have higher priority
622 than other disabled ciphersuites the next time ciphersuites are
625 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
626 the same ciphersuites as with "HIGH" alone, but in a specific
627 order where the PSK ciphersuites come first (since they are the
628 most recently disabled ciphersuites when "HIGH" is parsed).
630 Also, change ssl_create_cipher_list() (using this new
631 funcionality) such that between otherwise identical
632 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
636 *) Change ssl_create_cipher_list() so that it automatically
637 arranges the ciphersuites in reasonable order before starting
638 to process the rule string. Thus, the definition for "DEFAULT"
639 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
640 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
641 This makes it much easier to arrive at a reasonable default order
642 in applications for which anonymous ciphers are OK (meaning
643 that you can't actually use DEFAULT).
644 [Bodo Moeller; suggested by Victor Duchovni]
646 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
647 processing) into multiple integers instead of setting
648 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
649 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
650 (These masks as well as the individual bit definitions are hidden
651 away into the non-exported interface ssl/ssl_locl.h, so this
652 change to the definition of the SSL_CIPHER structure shouldn't
653 affect applications.) This give us more bits for each of these
654 categories, so there is no longer a need to coagulate AES128 and
655 AES256 into a single algorithm bit, and to coagulate Camellia128
656 and Camellia256 into a single algorithm bit, which has led to all
659 Thus, among other things, the kludge introduced in 0.9.7m and
660 0.9.8e for masking out AES256 independently of AES128 or masking
661 out Camellia256 independently of AES256 is not needed here in 0.9.9.
663 With the change, we also introduce new ciphersuite aliases that
664 so far were missing: "AES128", "AES256", "CAMELLIA128", and
668 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
669 Use the leftmost N bytes of the signature input if the input is
670 larger than the prime q (with N being the size in bytes of q).
673 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
674 it yet and it is largely untested.
677 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
680 *) Initial incomplete changes to avoid need for function casts in OpenSSL
681 some compilers (gcc 4.2 and later) reject their use. Safestack is
682 reimplemented. Update ASN1 to avoid use of legacy functions.
685 *) Win32/64 targets are linked with Winsock2.
688 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
689 to external functions. This can be used to increase CRL handling
690 efficiency especially when CRLs are very large by (for example) storing
691 the CRL revoked certificates in a database.
694 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
695 new CRLs added to a directory can be used. New command line option
696 -verify_return_error to s_client and s_server. This causes real errors
697 to be returned by the verify callback instead of carrying on no matter
698 what. This reflects the way a "real world" verify callback would behave.
701 *) GOST engine, supporting several GOST algorithms and public key formats.
702 Kindly donated by Cryptocom.
705 *) Partial support for Issuing Distribution Point CRL extension. CRLs
706 partitioned by DP are handled but no indirect CRL or reason partitioning
707 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
708 selected via a scoring technique which handles IDP and AKID in CRLs.
711 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
712 will ultimately be used for all verify operations: this will remove the
713 X509_STORE dependency on certificate verification and allow alternative
714 lookup methods. X509_STORE based implementations of these two callbacks.
717 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
718 Modify get_crl() to find a valid (unexpired) CRL if possible.
721 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
722 this would be called X509_CRL_cmp() but that name is already used by
723 a function that just compares CRL issuer names. Cache several CRL
724 extensions in X509_CRL structure and cache CRLDP in X509.
727 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
728 this maps equivalent X509_NAME structures into a consistent structure.
729 Name comparison can then be performed rapidly using memcmp().
732 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
736 *) Allow digests to supply their own micalg string for S/MIME type using
737 the ctrl EVP_MD_CTRL_MICALG.
740 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
741 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
742 ctrl. It can then customise the structure before and/or after signing
746 *) New function OBJ_add_sigid() to allow application defined signature OIDs
747 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
748 to free up any added signature OIDs.
751 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
752 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
753 digest and cipher tables. New options added to openssl utility:
754 list-message-digest-algorithms and list-cipher-algorithms.
757 *) Change the array representation of binary polynomials: the list
758 of degrees of non-zero coefficients is now terminated with -1.
759 Previously it was terminated with 0, which was also part of the
760 value; thus, the array representation was not applicable to
761 polynomials where t^0 has coefficient zero. This change makes
762 the array representation useful in a more general context.
765 *) Various modifications and fixes to SSL/TLS cipher string
766 handling. For ECC, the code now distinguishes between fixed ECDH
767 with RSA certificates on the one hand and with ECDSA certificates
768 on the other hand, since these are separate ciphersuites. The
769 unused code for Fortezza ciphersuites has been removed.
771 For consistency with EDH, ephemeral ECDH is now called "EECDH"
772 (not "ECDHE"). For consistency with the code for DH
773 certificates, use of ECDH certificates is now considered ECDH
774 authentication, not RSA or ECDSA authentication (the latter is
775 merely the CA's signing algorithm and not actively used in the
778 The temporary ciphersuite alias "ECCdraft" is no longer
779 available, and ECC ciphersuites are no longer excluded from "ALL"
780 and "DEFAULT". The following aliases now exist for RFC 4492
781 ciphersuites, most of these by analogy with the DH case:
783 kECDHr - ECDH cert, signed with RSA
784 kECDHe - ECDH cert, signed with ECDSA
785 kECDH - ECDH cert (signed with either RSA or ECDSA)
786 kEECDH - ephemeral ECDH
787 ECDH - ECDH cert or ephemeral ECDH
793 AECDH - anonymous ECDH
794 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
798 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
799 Use correct micalg parameters depending on digest(s) in signed message.
802 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
803 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
806 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
807 an engine to register a method. Add ENGINE lookups for methods and
808 functional reference processing.
811 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
812 EVP_{Sign,Verify}* which allow an application to customise the signature
816 *) New -resign option to smime utility. This adds one or more signers
817 to an existing PKCS#7 signedData structure. Also -md option to use an
818 alternative message digest algorithm for signing.
821 *) Tidy up PKCS#7 routines and add new functions to make it easier to
822 create PKCS7 structures containing multiple signers. Update smime
823 application to support multiple signers.
826 *) New -macalg option to pkcs12 utility to allow setting of an alternative
830 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
831 Reorganize PBE internals to lookup from a static table using NIDs,
832 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
833 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
834 PRF which will be automatically used with PBES2.
837 *) Replace the algorithm specific calls to generate keys in "req" with the
841 *) Update PKCS#7 enveloped data routines to use new API. This is now
842 supported by any public key method supporting the encrypt operation. A
843 ctrl is added to allow the public key algorithm to examine or modify
844 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
848 *) Add a ctrl to asn1 method to allow a public key algorithm to express
849 a default digest type to use. In most cases this will be SHA1 but some
850 algorithms (such as GOST) need to specify an alternative digest. The
851 return value indicates how strong the prefernce is 1 means optional and
852 2 is mandatory (that is it is the only supported type). Modify
853 ASN1_item_sign() to accept a NULL digest argument to indicate it should
854 use the default md. Update openssl utilities to use the default digest
855 type for signing if it is not explicitly indicated.
858 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
859 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
860 signing method from the key type. This effectively removes the link
861 between digests and public key types.
864 *) Add an OID cross reference table and utility functions. Its purpose is to
865 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
866 rsaEncryption. This will allow some of the algorithm specific hackery
867 needed to use the correct OID to be removed.
870 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
871 structures for PKCS7_sign(). They are now set up by the relevant public
875 *) Add provisional EC pkey method with support for ECDSA and ECDH.
878 *) Add support for key derivation (agreement) in the API, DH method and
882 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
883 public and private key formats. As a side effect these add additional
884 command line functionality not previously available: DSA signatures can be
885 generated and verified using pkeyutl and DH key support and generation in
890 [Oliver Tappe <zooey@hirschkaefer.de>]
892 *) New make target "install_html_docs" installs HTML renditions of the
894 [Oliver Tappe <zooey@hirschkaefer.de>]
896 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
897 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
898 support key and parameter generation and add initial key generation
899 functionality for RSA.
902 *) Add functions for main EVP_PKEY_method operations. The undocumented
903 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
904 EVP_PKEY_{encrypt,decrypt}_old.
907 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
908 key API, doesn't do much yet.
911 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
912 public key algorithms. New option to openssl utility:
913 "list-public-key-algorithms" to print out info.
916 *) Implement the Supported Elliptic Curves Extension for
917 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
920 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
921 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
924 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
925 utilities such as rsa, dsa, dsaparam etc except they process any key
929 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
930 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
931 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
935 *) Initial support for pluggable public key ASN1.
936 De-spaghettify the public key ASN1 handling. Move public and private
937 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
938 algorithm specific handling to a single module within the relevant
939 algorithm directory. Add functions to allow (near) opaque processing
940 of public and private key structures.
943 *) Implement the Supported Point Formats Extension for
944 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
947 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
948 for the psk identity [hint] and the psk callback functions to the
949 SSL_SESSION, SSL and SSL_CTX structure.
952 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
956 SSL_CTX_use_psk_identity_hint
957 SSL_get_psk_identity_hint
959 SSL_use_psk_identity_hint
961 [Mika Kousa and Pasi Eronen of Nokia Corporation]
963 *) Add RFC 3161 compliant time stamp request creation, response generation
964 and response verification functionality.
965 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
967 *) Add initial support for TLS extensions, specifically for the server_name
968 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
969 have new members for a host name. The SSL data structure has an
970 additional member SSL_CTX *initial_ctx so that new sessions can be
971 stored in that context to allow for session resumption, even after the
972 SSL has been switched to a new SSL_CTX in reaction to a client's
973 server_name extension.
975 New functions (subject to change):
978 SSL_get_servername_type()
981 New CTRL codes and macros (subject to change):
983 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
984 - SSL_CTX_set_tlsext_servername_callback()
985 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
986 - SSL_CTX_set_tlsext_servername_arg()
987 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
989 openssl s_client has a new '-servername ...' option.
991 openssl s_server has new options '-servername_host ...', '-cert2 ...',
992 '-key2 ...', '-servername_fatal' (subject to change). This allows
993 testing the HostName extension for a specific single host name ('-cert'
994 and '-key' remain fallbacks for handshakes without HostName
995 negotiation). If the unrecogninzed_name alert has to be sent, this by
996 default is a warning; it becomes fatal with the '-servername_fatal'
999 [Peter Sylvester, Remy Allais, Christophe Renou]
1001 *) Whirlpool hash implementation is added.
1004 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1005 bn(64,32). Because of instruction set limitations it doesn't have
1006 any negative impact on performance. This was done mostly in order
1007 to make it possible to share assembler modules, such as bn_mul_mont
1008 implementations, between 32- and 64-bit builds without hassle.
1011 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1012 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1016 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1017 dedicated Montgomery multiplication procedure, is introduced.
1018 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1019 "64-bit" performance on certain 32-bit targets.
1022 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1023 in SSL structures. New SSL ctrl to set maximum send fragment size.
1024 Save memory by seeting the I/O buffer sizes dynamically instead of
1025 using the maximum available value.
1028 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1029 in addition to the text details.
1032 *) Very, very preliminary EXPERIMENTAL support for printing of general
1033 ASN1 structures. This currently produces rather ugly output and doesn't
1034 handle several customised structures at all.
1037 *) Integrated support for PVK file format and some related formats such
1038 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1039 these in the 'rsa' and 'dsa' utilities.
1042 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1045 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1046 place for the (very old) "NETSCAPE" format certificates which are now
1047 handled using new ASN1 code equivalents.
1050 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1051 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1052 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1055 *) Modify CRL distribution points extension code to print out previously
1056 unsupported fields. Enhance extension setting code to allow setting of
1060 *) Add print and set support for Issuing Distribution Point CRL extension.
1063 *) Change 'Configure' script to enable Camellia by default.
1066 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1068 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1069 for multi-threaded use of ECDH.
1070 [Adam Langley (Google)]
1072 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1075 *) Add protection against ECDSA timing attacks as mentioned in the paper
1076 by Billy Bob Brumley and Nicola Tuveri, see:
1078 http://eprint.iacr.org/2011/232.pdf
1080 [Billy Bob Brumley and Nicola Tuveri]
1082 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1084 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1085 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1087 *) Fix bug in string printing code: if *any* escaping is enabled we must
1088 escape the escape character (backslash) or the resulting string is
1092 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1094 *) Disable code workaround for ancient and obsolete Netscape browsers
1095 and servers: an attacker can use it in a ciphersuite downgrade attack.
1096 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1099 *) Fixed J-PAKE implementation error, originally discovered by
1100 Sebastien Martini, further info and confirmation from Stefan
1101 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1104 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1106 *) Fix extension code to avoid race conditions which can result in a buffer
1107 overrun vulnerability: resumed sessions must not be modified as they can
1108 be shared by multiple threads. CVE-2010-3864
1111 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1114 *) Don't reencode certificate when calculating signature: cache and use
1115 the original encoding instead. This makes signature verification of
1116 some broken encodings work correctly.
1119 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1120 is also one of the inputs.
1121 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1123 *) Don't repeatedly append PBE algorithms to table if they already exist.
1124 Sort table on each new add. This effectively makes the table read only
1125 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1129 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1131 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1134 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1135 access or freeing data twice (CVE-2010-0742)
1136 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1138 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1139 common in certificates and some applications which only call
1140 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1144 Reduce copying into .apps and .test in makevms.com
1145 Don't try to use blank CA certificate in CA.com
1146 Allow use of C files from original directories in maketests.com
1147 [Steven M. Schweda" <sms@antinode.info>]
1149 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1151 *) When rejecting SSL/TLS records due to an incorrect version number, never
1152 update s->server with a new major version number. As of
1153 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1154 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1155 the previous behavior could result in a read attempt at NULL when
1156 receiving specific incorrect SSL/TLS records once record payload
1157 protection is active. (CVE-2010-0740)
1158 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1160 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1161 could be crashed if the relevant tables were not present (e.g. chrooted).
1162 [Tomas Hoger <thoger@redhat.com>]
1164 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1166 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1167 [Martin Olsson, Neel Mehta]
1169 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1170 accommodate for stack sorting, always a write lock!).
1173 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1174 excessive delays in the RAND_poll(): over a minute. As a workaround
1175 include a time check in the inner Heap32Next loop too.
1178 *) The code that handled flushing of data in SSL/TLS originally used the
1179 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1180 the problem outlined in PR#1949. The fix suggested there however can
1181 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1182 of Apache). So instead simplify the code to flush unconditionally.
1183 This should be fine since flushing with no data to flush is a no op.
1186 *) Handle TLS versions 2.0 and later properly and correctly use the
1187 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1188 off ancient servers have a habit of sticking around for a while...
1191 *) Modify compression code so it frees up structures without using the
1192 ex_data callbacks. This works around a problem where some applications
1193 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1194 restarting) then use compression (e.g. SSL with compression) later.
1195 This results in significant per-connection memory leaks and
1196 has caused some security issues including CVE-2008-1678 and
1200 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1201 change when encrypting or decrypting.
1204 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1205 connect and renegotiate with servers which do not support RI.
1206 Until RI is more widely deployed this option is enabled by default.
1209 *) Add "missing" ssl ctrls to clear options and mode.
1212 *) If client attempts to renegotiate and doesn't support RI respond with
1213 a no_renegotiation alert as required by RFC5746. Some renegotiating
1214 TLS clients will continue a connection gracefully when they receive
1215 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1216 waiting for a server hello which it will never receive. Now we treat a
1217 received no_renegotiation alert as a fatal error. This is because
1218 applications requesting a renegotiation might well expect it to succeed
1219 and would have no code in place to handle the server denying it so the
1220 only safe thing to do is to terminate the connection.
1223 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1224 peer supports secure renegotiation and 0 otherwise. Print out peer
1225 renegotiation support in s_client/s_server.
1228 *) Replace the highly broken and deprecated SPKAC certification method with
1229 the updated NID creation version. This should correctly handle UTF8.
1232 *) Implement RFC5746. Re-enable renegotiation but require the extension
1233 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1234 turns out to be a bad idea. It has been replaced by
1235 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1236 SSL_CTX_set_options(). This is really not recommended unless you
1237 know what you are doing.
1238 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1240 *) Fixes to stateless session resumption handling. Use initial_ctx when
1241 issuing and attempting to decrypt tickets in case it has changed during
1242 servername handling. Use a non-zero length session ID when attempting
1243 stateless session resumption: this makes it possible to determine if
1244 a resumption has occurred immediately after receiving server hello
1245 (several places in OpenSSL subtly assume this) instead of later in
1249 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1250 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1251 fixes for a few places where the return code is not checked
1253 [Julia Lawall <julia@diku.dk>]
1255 *) Add --strict-warnings option to Configure script to include devteam
1256 warnings in other configurations.
1259 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1260 makes it possible to install openssl libraries in locations which
1261 have names other than "lib", for example "/usr/lib64" which some
1263 [Steve Henson, based on patch from Jeremy Utley]
1265 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1266 X690 8.9.12 and can produce some misleading textual output of OIDs.
1267 [Steve Henson, reported by Dan Kaminsky]
1269 *) Delete MD2 from algorithm tables. This follows the recommendation in
1270 several standards that it is not used in new applications due to
1271 several cryptographic weaknesses. For binary compatibility reasons
1272 the MD2 API is still compiled in by default.
1275 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1279 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1280 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1282 [Guenter <lists@gknw.net>]
1284 *) Fix the server certificate chain building code to use X509_verify_cert(),
1285 it used to have an ad-hoc builder which was unable to cope with anything
1286 other than a simple chain.
1287 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1289 *) Don't check self signed certificate signatures in X509_verify_cert()
1290 by default (a flag can override this): it just wastes time without
1291 adding any security. As a useful side effect self signed root CAs
1292 with non-FIPS digests are now usable in FIPS mode.
1295 *) In dtls1_process_out_of_seq_message() the check if the current message
1296 is already buffered was missing. For every new message was memory
1297 allocated, allowing an attacker to perform an denial of service attack
1298 with sending out of seq handshake messages until there is no memory
1299 left. Additionally every future messege was buffered, even if the
1300 sequence number made no sense and would be part of another handshake.
1301 So only messages with sequence numbers less than 10 in advance will be
1302 buffered. (CVE-2009-1378)
1303 [Robin Seggelmann, discovered by Daniel Mentz]
1305 *) Records are buffered if they arrive with a future epoch to be
1306 processed after finishing the corresponding handshake. There is
1307 currently no limitation to this buffer allowing an attacker to perform
1308 a DOS attack with sending records with future epochs until there is no
1309 memory left. This patch adds the pqueue_size() function to detemine
1310 the size of a buffer and limits the record buffer to 100 entries.
1312 [Robin Seggelmann, discovered by Daniel Mentz]
1314 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1315 parent structure is freed. (CVE-2009-1379)
1318 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1319 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1322 [Ilya O. <vrghost@gmail.com>]
1324 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1326 *) Disable renegotiation completely - this fixes a severe security
1327 problem (CVE-2009-3555) at the cost of breaking all
1328 renegotiation. Renegotiation can be re-enabled by setting
1329 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1330 run-time. This is really not recommended unless you know what
1334 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1336 *) Don't set val to NULL when freeing up structures, it is freed up by
1337 underlying code. If sizeof(void *) > sizeof(long) this can result in
1338 zeroing past the valid field. (CVE-2009-0789)
1339 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1341 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1342 checked correctly. This would allow some invalid signed attributes to
1343 appear to verify correctly. (CVE-2009-0591)
1344 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1346 *) Reject UniversalString and BMPString types with invalid lengths. This
1347 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1348 a legal length. (CVE-2009-0590)
1351 *) Set S/MIME signing as the default purpose rather than setting it
1352 unconditionally. This allows applications to override it at the store
1356 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1357 to handle some structures.
1360 *) Improve efficiency of mem_gets: don't search whole buffer each time
1362 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1364 *) New -hex option for openssl rand.
1367 *) Print out UTF8String and NumericString when parsing ASN1.
1370 *) Support NumericString type for name components.
1373 *) Allow CC in the environment to override the automatically chosen
1374 compiler. Note that nothing is done to ensure flags work with the
1378 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1380 *) Properly check EVP_VerifyFinal() and similar return values
1382 [Ben Laurie, Bodo Moeller, Google Security Team]
1384 *) Enable TLS extensions by default.
1387 *) Allow the CHIL engine to be loaded, whether the application is
1388 multithreaded or not. (This does not release the developer from the
1389 obligation to set up the dynamic locking callbacks.)
1390 [Sander Temme <sander@temme.net>]
1392 *) Use correct exit code if there is an error in dgst command.
1393 [Steve Henson; problem pointed out by Roland Dirlewanger]
1395 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1396 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1399 *) Add experimental JPAKE support, including demo authentication in
1400 s_client and s_server.
1403 *) Set the comparison function in v3_addr_canonize().
1404 [Rob Austein <sra@hactrn.net>]
1406 *) Add support for XMPP STARTTLS in s_client.
1407 [Philip Paeps <philip@freebsd.org>]
1409 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1410 to ensure that even with this option, only ciphersuites in the
1411 server's preference list will be accepted. (Note that the option
1412 applies only when resuming a session, so the earlier behavior was
1413 just about the algorithm choice for symmetric cryptography.)
1416 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1418 *) Fix NULL pointer dereference if a DTLS server received
1419 ChangeCipherSpec as first record (CVE-2009-1386).
1422 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1423 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1426 *) The fix in 0.9.8c that supposedly got rid of unsafe
1427 double-checked locking was incomplete for RSA blinding,
1428 addressing just one layer of what turns out to have been
1429 doubly unsafe triple-checked locking.
1431 So now fix this for real by retiring the MONT_HELPER macro
1432 in crypto/rsa/rsa_eay.c.
1434 [Bodo Moeller; problem pointed out by Marius Schilder]
1436 *) Various precautionary measures:
1438 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1440 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1441 (NB: This would require knowledge of the secret session ticket key
1442 to exploit, in which case you'd be SOL either way.)
1444 - Change bn_nist.c so that it will properly handle input BIGNUMs
1445 outside the expected range.
1447 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1450 [Neel Mehta, Bodo Moeller]
1452 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1453 the load fails. Useful for distros.
1454 [Ben Laurie and the FreeBSD team]
1456 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1459 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1462 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1464 This work was sponsored by Logica.
1467 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1468 keystores. Support for SSL/TLS client authentication too.
1469 Not compiled unless enable-capieng specified to Configure.
1471 This work was sponsored by Logica.
1474 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1475 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1476 attribute creation routines such as certifcate requests and PKCS#12
1480 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1482 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1483 handshake which could lead to a cilent crash as found using the
1484 Codenomicon TLS test suite (CVE-2008-1672)
1485 [Steve Henson, Mark Cox]
1487 *) Fix double free in TLS server name extensions which could lead to
1488 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1491 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1493 Clear the error queue to ensure that error entries left from
1494 older function calls do not interfere with the correct operation.
1495 [Lutz Jaenicke, Erik de Castro Lopo]
1497 *) Remove root CA certificates of commercial CAs:
1499 The OpenSSL project does not recommend any specific CA and does not
1500 have any policy with respect to including or excluding any CA.
1501 Therefore it does not make any sense to ship an arbitrary selection
1502 of root CA certificates with the OpenSSL software.
1505 *) RSA OAEP patches to fix two separate invalid memory reads.
1506 The first one involves inputs when 'lzero' is greater than
1507 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1508 before the beginning of from). The second one involves inputs where
1509 the 'db' section contains nothing but zeroes (there is a one-byte
1510 invalid read after the end of 'db').
1511 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1513 *) Partial backport from 0.9.9-dev:
1515 Introduce bn_mul_mont (dedicated Montgomery multiplication
1516 procedure) as a candidate for BIGNUM assembler implementation.
1517 While 0.9.9-dev uses assembler for various architectures, only
1518 x86_64 is available by default here in the 0.9.8 branch, and
1519 32-bit x86 is available through a compile-time setting.
1521 To try the 32-bit x86 assembler implementation, use Configure
1522 option "enable-montasm" (which exists only for this backport).
1524 As "enable-montasm" for 32-bit x86 disclaims code stability
1525 anyway, in this constellation we activate additional code
1526 backported from 0.9.9-dev for further performance improvements,
1527 namely BN_from_montgomery_word. (To enable this otherwise,
1528 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1530 [Andy Polyakov (backport partially by Bodo Moeller)]
1532 *) Add TLS session ticket callback. This allows an application to set
1533 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1534 values. This is useful for key rollover for example where several key
1535 sets may exist with different names.
1538 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1539 This was broken until now in 0.9.8 releases, such that the only way
1540 a registered ENGINE could be used (assuming it initialises
1541 successfully on the host) was to explicitly set it as the default
1542 for the relevant algorithms. This is in contradiction with 0.9.7
1543 behaviour and the documentation. With this fix, when an ENGINE is
1544 registered into a given algorithm's table of implementations, the
1545 'uptodate' flag is reset so that auto-discovery will be used next
1546 time a new context for that algorithm attempts to select an
1548 [Ian Lister (tweaked by Geoff Thorpe)]
1550 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1551 implemention in the following ways:
1553 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1556 Lack of BER streaming support means one pass streaming processing is
1557 only supported if data is detached: setting the streaming flag is
1558 ignored for embedded content.
1560 CMS support is disabled by default and must be explicitly enabled
1561 with the enable-cms configuration option.
1564 *) Update the GMP engine glue to do direct copies between BIGNUM and
1565 mpz_t when openssl and GMP use the same limb size. Otherwise the
1566 existing "conversion via a text string export" trick is still used.
1567 [Paul Sheer <paulsheer@gmail.com>]
1569 *) Zlib compression BIO. This is a filter BIO which compressed and
1570 uncompresses any data passed through it.
1573 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1574 RFC3394 compatible AES key wrapping.
1577 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1578 sets string data without copying. X509_ALGOR_set0() and
1579 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1580 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1581 from an X509_ATTRIBUTE structure optionally checking it occurs only
1582 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1586 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1587 to get the expected BN_FLG_CONSTTIME behavior.
1588 [Bodo Moeller (Google)]
1592 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1593 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1594 - added some more tests to do_tests.pl
1595 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1596 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1597 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1598 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1599 - various changes to netware.pl to enable gcc-cross builds on Win32
1601 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1602 - various changes to fix missing prototype warnings
1603 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1604 - added AES, WHIRLPOOL and CPUID assembler code to build files
1605 - added missing AES assembler make rules to mk1mf.pl
1606 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1607 [Guenter Knauf <eflash@gmx.net>]
1609 *) Implement certificate status request TLS extension defined in RFC3546.
1610 A client can set the appropriate parameters and receive the encoded
1611 OCSP response via a callback. A server can query the supplied parameters
1612 and set the encoded OCSP response in the callback. Add simplified examples
1613 to s_client and s_server.
1616 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1618 *) Fix various bugs:
1619 + Binary incompatibility of ssl_ctx_st structure
1620 + DTLS interoperation with non-compliant servers
1621 + Don't call get_session_cb() without proposed session
1622 + Fix ia64 assembler code
1623 [Andy Polyakov, Steve Henson]
1625 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1627 *) DTLS Handshake overhaul. There were longstanding issues with
1628 OpenSSL DTLS implementation, which were making it impossible for
1629 RFC 4347 compliant client to communicate with OpenSSL server.
1630 Unfortunately just fixing these incompatibilities would "cut off"
1631 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1632 server keeps tolerating non RFC compliant syntax. The opposite is
1633 not true, 0.9.8f client can not communicate with earlier server.
1634 This update even addresses CVE-2007-4995.
1637 *) Changes to avoid need for function casts in OpenSSL: some compilers
1638 (gcc 4.2 and later) reject their use.
1639 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1642 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1643 RFC4507bis. The encrypted ticket format is an encrypted encoded
1644 SSL_SESSION structure, that way new session features are automatically
1647 If a client application caches session in an SSL_SESSION structure
1648 support is transparent because tickets are now stored in the encoded
1651 The SSL_CTX structure automatically generates keys for ticket
1652 protection in servers so again support should be possible
1653 with no application modification.
1655 If a client or server wishes to disable RFC4507 support then the option
1656 SSL_OP_NO_TICKET can be set.
1658 Add a TLS extension debugging callback to allow the contents of any client
1659 or server extensions to be examined.
1661 This work was sponsored by Google.
1664 *) Add initial support for TLS extensions, specifically for the server_name
1665 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1666 have new members for a host name. The SSL data structure has an
1667 additional member SSL_CTX *initial_ctx so that new sessions can be
1668 stored in that context to allow for session resumption, even after the
1669 SSL has been switched to a new SSL_CTX in reaction to a client's
1670 server_name extension.
1672 New functions (subject to change):
1674 SSL_get_servername()
1675 SSL_get_servername_type()
1678 New CTRL codes and macros (subject to change):
1680 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1681 - SSL_CTX_set_tlsext_servername_callback()
1682 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1683 - SSL_CTX_set_tlsext_servername_arg()
1684 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1686 openssl s_client has a new '-servername ...' option.
1688 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1689 '-key2 ...', '-servername_fatal' (subject to change). This allows
1690 testing the HostName extension for a specific single host name ('-cert'
1691 and '-key' remain fallbacks for handshakes without HostName
1692 negotiation). If the unrecogninzed_name alert has to be sent, this by
1693 default is a warning; it becomes fatal with the '-servername_fatal'
1696 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1698 *) Add AES and SSE2 assembly language support to VC++ build.
1701 *) Mitigate attack on final subtraction in Montgomery reduction.
1704 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1705 (which previously caused an internal error).
1708 *) Squeeze another 10% out of IGE mode when in != out.
1711 *) AES IGE mode speedup.
1712 [Dean Gaudet (Google)]
1714 *) Add the Korean symmetric 128-bit cipher SEED (see
1715 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1716 add SEED ciphersuites from RFC 4162:
1718 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1719 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1720 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1721 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1723 To minimize changes between patchlevels in the OpenSSL 0.9.8
1724 series, SEED remains excluded from compilation unless OpenSSL
1725 is configured with 'enable-seed'.
1726 [KISA, Bodo Moeller]
1728 *) Mitigate branch prediction attacks, which can be practical if a
1729 single processor is shared, allowing a spy process to extract
1730 information. For detailed background information, see
1731 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1732 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1733 and Necessary Software Countermeasures"). The core of the change
1734 are new versions BN_div_no_branch() and
1735 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1736 respectively, which are slower, but avoid the security-relevant
1737 conditional branches. These are automatically called by BN_div()
1738 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1739 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1740 remove a conditional branch.
1742 BN_FLG_CONSTTIME is the new name for the previous
1743 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1744 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1745 in the exponent causes BN_mod_exp_mont() to use the alternative
1746 implementation in BN_mod_exp_mont_consttime().) The old name
1747 remains as a deprecated alias.
1749 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1750 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1751 constant-time implementations for more than just exponentiation.
1752 Here too the old name is kept as a deprecated alias.
1754 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1755 the BN_BLINDING structure gets an independent copy of the
1756 modulus. This means that the previous "BIGNUM *m" argument to
1757 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1758 essentially becomes "const BIGNUM *m", although we can't actually
1759 change this in the header file before 0.9.9. It allows
1760 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1761 enable BN_FLG_CONSTTIME.
1763 [Matthew D Wood (Intel Corp)]
1765 *) In the SSL/TLS server implementation, be strict about session ID
1766 context matching (which matters if an application uses a single
1767 external cache for different purposes). Previously,
1768 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1769 set. This did ensure strict client verification, but meant that,
1770 with applications using a single external cache for quite
1771 different requirements, clients could circumvent ciphersuite
1772 restrictions for a given session ID context by starting a session
1773 in a different context.
1776 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1777 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1778 authentication-only ciphersuites.
1781 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1782 not complete and could lead to a possible single byte overflow
1783 (CVE-2007-5135) [Ben Laurie]
1785 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1787 *) Since AES128 and AES256 (and similarly Camellia128 and
1788 Camellia256) share a single mask bit in the logic of
1789 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1790 kludge to work properly if AES128 is available and AES256 isn't
1791 (or if Camellia128 is available and Camellia256 isn't).
1794 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1795 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1796 When a point or a seed is encoded in a BIT STRING, we need to
1797 prevent the removal of trailing zero bits to get the proper DER
1798 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1799 of a NamedBitList, for which trailing 0 bits need to be removed.)
1802 *) Have SSL/TLS server implementation tolerate "mismatched" record
1803 protocol version while receiving ClientHello even if the
1804 ClientHello is fragmented. (The server can't insist on the
1805 particular protocol version it has chosen before the ServerHello
1806 message has informed the client about his choice.)
1809 *) Add RFC 3779 support.
1810 [Rob Austein for ARIN, Ben Laurie]
1812 *) Load error codes if they are not already present instead of using a
1813 static variable. This allows them to be cleanly unloaded and reloaded.
1814 Improve header file function name parsing.
1817 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1818 or CAPABILITY handshake as required by RFCs.
1821 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1823 *) Introduce limits to prevent malicious keys being able to
1824 cause a denial of service. (CVE-2006-2940)
1825 [Steve Henson, Bodo Moeller]
1827 *) Fix ASN.1 parsing of certain invalid structures that can result
1828 in a denial of service. (CVE-2006-2937) [Steve Henson]
1830 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1831 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1833 *) Fix SSL client code which could crash if connecting to a
1834 malicious SSLv2 server. (CVE-2006-4343)
1835 [Tavis Ormandy and Will Drewry, Google Security Team]
1837 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1838 match only those. Before that, "AES256-SHA" would be interpreted
1839 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1840 the same strength classification in 0.9.7h) as we currently only
1841 have a single AES bit in the ciphersuite description bitmap.
1842 That change, however, also applied to ciphersuite strings such as
1843 "RC4-MD5" that intentionally matched multiple ciphersuites --
1844 namely, SSL 2.0 ciphersuites in addition to the more common ones
1845 from SSL 3.0/TLS 1.0.
1847 So we change the selection algorithm again: Naming an explicit
1848 ciphersuite selects this one ciphersuite, and any other similar
1849 ciphersuite (same bitmap) from *other* protocol versions.
1850 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1851 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1853 Since SSL 2.0 does not have any ciphersuites for which the
1854 128/256 bit distinction would be relevant, this works for now.
1855 The proper fix will be to use different bits for AES128 and
1856 AES256, which would have avoided the problems from the beginning;
1857 however, bits are scarce, so we can only do this in a new release
1858 (not just a patchlevel) when we can change the SSL_CIPHER
1859 definition to split the single 'unsigned long mask' bitmap into
1860 multiple values to extend the available space.
1864 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1866 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1867 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1869 *) Add AES IGE and biIGE modes.
1872 *) Change the Unix randomness entropy gathering to use poll() when
1873 possible instead of select(), since the latter has some
1874 undesirable limitations.
1875 [Darryl Miles via Richard Levitte and Bodo Moeller]
1877 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1878 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1879 cannot be implicitly activated as part of, e.g., the "AES" alias.
1880 However, please upgrade to OpenSSL 0.9.9[-dev] for
1881 non-experimental use of the ECC ciphersuites to get TLS extension
1882 support, which is required for curve and point format negotiation
1883 to avoid potential handshake problems.
1886 *) Disable rogue ciphersuites:
1888 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1889 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1890 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1892 The latter two were purportedly from
1893 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1896 Also deactivate the remaining ciphersuites from
1897 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1898 unofficial, and the ID has long expired.
1901 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1902 dual-core machines) and other potential thread-safety issues.
1905 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1906 versions), which is now available for royalty-free use
1907 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1908 Also, add Camellia TLS ciphersuites from RFC 4132.
1910 To minimize changes between patchlevels in the OpenSSL 0.9.8
1911 series, Camellia remains excluded from compilation unless OpenSSL
1912 is configured with 'enable-camellia'.
1915 *) Disable the padding bug check when compression is in use. The padding
1916 bug check assumes the first packet is of even length, this is not
1917 necessarily true if compresssion is enabled and can result in false
1918 positives causing handshake failure. The actual bug test is ancient
1919 code so it is hoped that implementations will either have fixed it by
1920 now or any which still have the bug do not support compression.
1923 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1925 *) When applying a cipher rule check to see if string match is an explicit
1926 cipher suite and only match that one cipher suite if it is.
1929 *) Link in manifests for VC++ if needed.
1930 [Austin Ziegler <halostatue@gmail.com>]
1932 *) Update support for ECC-based TLS ciphersuites according to
1933 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1934 TLS extensions, which are supported starting with the 0.9.9
1935 branch, not in the OpenSSL 0.9.8 branch).
1938 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1939 opaque EVP_CIPHER_CTX handling.
1942 *) Fixes and enhancements to zlib compression code. We now only use
1943 "zlib1.dll" and use the default __cdecl calling convention on Win32
1944 to conform with the standards mentioned here:
1945 http://www.zlib.net/DLL_FAQ.txt
1946 Static zlib linking now works on Windows and the new --with-zlib-include
1947 --with-zlib-lib options to Configure can be used to supply the location
1948 of the headers and library. Gracefully handle case where zlib library
1952 *) Several fixes and enhancements to the OID generation code. The old code
1953 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1954 handle numbers larger than ULONG_MAX, truncated printing and had a
1955 non standard OBJ_obj2txt() behaviour.
1958 *) Add support for building of engines under engine/ as shared libraries
1959 under VC++ build system.
1962 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1963 Hopefully, we will not see any false combination of paths any more.
1966 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1968 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1969 (part of SSL_OP_ALL). This option used to disable the
1970 countermeasure against man-in-the-middle protocol-version
1971 rollback in the SSL 2.0 server implementation, which is a bad
1972 idea. (CVE-2005-2969)
1974 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1975 for Information Security, National Institute of Advanced Industrial
1976 Science and Technology [AIST], Japan)]
1978 *) Add two function to clear and return the verify parameter flags.
1981 *) Keep cipherlists sorted in the source instead of sorting them at
1982 runtime, thus removing the need for a lock.
1985 *) Avoid some small subgroup attacks in Diffie-Hellman.
1986 [Nick Mathewson and Ben Laurie]
1988 *) Add functions for well-known primes.
1991 *) Extended Windows CE support.
1992 [Satoshi Nakamura and Andy Polyakov]
1994 *) Initialize SSL_METHOD structures at compile time instead of during
1995 runtime, thus removing the need for a lock.
1998 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1999 attempting to decrypt each encrypted key in turn. Add support to
2003 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2005 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2008 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2011 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2012 key into the same file any more.
2015 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2018 *) Add -utf8 command line and config file option to 'ca'.
2019 [Stefan <stf@udoma.org]
2021 *) Removed the macro des_crypt(), as it seems to conflict with some
2022 libraries. Use DES_crypt().
2025 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2026 involves renaming the source and generated shared-libs for
2027 both. The engines will accept the corrected or legacy ids
2028 ('ncipher' and '4758_cca' respectively) when binding. NB,
2029 this only applies when building 'shared'.
2030 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2032 *) Add attribute functions to EVP_PKEY structure. Modify
2033 PKCS12_create() to recognize a CSP name attribute and
2034 use it. Make -CSP option work again in pkcs12 utility.
2037 *) Add new functionality to the bn blinding code:
2038 - automatic re-creation of the BN_BLINDING parameters after
2039 a fixed number of uses (currently 32)
2040 - add new function for parameter creation
2041 - introduce flags to control the update behaviour of the
2042 BN_BLINDING parameters
2043 - hide BN_BLINDING structure
2044 Add a second BN_BLINDING slot to the RSA structure to improve
2045 performance when a single RSA object is shared among several
2049 *) Add support for DTLS.
2050 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2052 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2053 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2056 *) Remove buggy and incompletet DH cert support from
2057 ssl/ssl_rsa.c and ssl/s3_both.c
2060 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2061 the apps/openssl applications.
2064 *) Compile clean with "-Wall -Wmissing-prototypes
2065 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2066 DEBUG_SAFESTACK must also be set.
2069 *) Change ./Configure so that certain algorithms can be disabled by default.
2070 The new counterpiece to "no-xxx" is "enable-xxx".
2072 The patented RC5 and MDC2 algorithms will now be disabled unless
2073 "enable-rc5" and "enable-mdc2", respectively, are specified.
2075 (IDEA remains enabled despite being patented. This is because IDEA
2076 is frequently required for interoperability, and there is no license
2077 fee for non-commercial use. As before, "no-idea" can be used to
2078 avoid this algorithm.)
2082 *) Add processing of proxy certificates (see RFC 3820). This work was
2083 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2084 EGEE (Enabling Grids for E-science in Europe).
2087 *) RC4 performance overhaul on modern architectures/implementations, such
2088 as Intel P4, IA-64 and AMD64.
2091 *) New utility extract-section.pl. This can be used specify an alternative
2092 section number in a pod file instead of having to treat each file as
2093 a separate case in Makefile. This can be done by adding two lines to the
2096 =for comment openssl_section:XXX
2098 The blank line is mandatory.
2102 *) New arguments -certform, -keyform and -pass for s_client and s_server
2103 to allow alternative format key and certificate files and passphrase
2107 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2108 update associated structures and add various utility functions.
2110 Add new policy related verify parameters, include policy checking in
2111 standard verify code. Enhance 'smime' application with extra parameters
2112 to support policy checking and print out.
2115 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2116 Nehemiah processors. These extensions support AES encryption in hardware
2117 as well as RNG (though RNG support is currently disabled).
2118 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2120 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2123 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2124 [Andy Polyakov and a number of other people]
2126 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2127 implementation contributed by IBM.
2128 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2130 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2131 exponent rather than 'unsigned long'. There is a corresponding change to
2132 the new 'rsa_keygen' element of the RSA_METHOD structure.
2133 [Jelte Jansen, Geoff Thorpe]
2135 *) Functionality for creating the initial serial number file is now
2136 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2138 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2139 number file to 1, which is bound to cause problems. To avoid
2140 the problems while respecting compatibility between different 0.9.7
2141 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2142 CA.pl for serial number initialization. With the new release 0.9.8,
2143 we can fix the problem directly in the 'ca' utility.)
2146 *) Reduced header interdepencies by declaring more opaque objects in
2147 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2148 give fewer recursive includes, which could break lazy source code - so
2149 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2150 developers should define this symbol when building and using openssl to
2151 ensure they track the recommended behaviour, interfaces, [etc], but
2152 backwards-compatible behaviour prevails when this isn't defined.
2155 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2158 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2159 This will generate a random key of the appropriate length based on the
2160 cipher context. The EVP_CIPHER can provide its own random key generation
2161 routine to support keys of a specific form. This is used in the des and
2162 3des routines to generate a key of the correct parity. Update S/MIME
2163 code to use new functions and hence generate correct parity DES keys.
2164 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2165 valid (weak or incorrect parity).
2168 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2169 as looking them up. This is useful when the verified structure may contain
2170 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2171 present unless the new PKCS7_NO_CRL flag is asserted.
2174 *) Extend ASN1 oid configuration module. It now additionally accepts the
2177 shortName = some long name, 1.2.3.4
2180 *) Reimplemented the BN_CTX implementation. There is now no more static
2181 limitation on the number of variables it can handle nor the depth of the
2182 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2183 information can now expand as required, and rather than having a single
2184 static array of bignums, BN_CTX now uses a linked-list of such arrays
2185 allowing it to expand on demand whilst maintaining the usefulness of
2186 BN_CTX's "bundling".
2189 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2190 to allow all RSA operations to function using a single BN_CTX.
2193 *) Preliminary support for certificate policy evaluation and checking. This
2194 is initially intended to pass the tests outlined in "Conformance Testing
2195 of Relying Party Client Certificate Path Processing Logic" v1.07.
2198 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2199 remained unused and not that useful. A variety of other little bignum
2200 tweaks and fixes have also been made continuing on from the audit (see
2204 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2205 associated ASN1, EVP and SSL functions and old ASN1 macros.
2208 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2209 and this should never fail. So the return value from the use of
2210 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2211 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2214 *) BN_CTX_get() should return zero-valued bignums, providing the same
2215 initialised value as BN_new().
2216 [Geoff Thorpe, suggested by Ulf Möller]
2218 *) Support for inhibitAnyPolicy certificate extension.
2221 *) An audit of the BIGNUM code is underway, for which debugging code is
2222 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2223 is considered valid when processing BIGNUMs, and causes execution to
2224 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2225 further steps are taken to deliberately pollute unused data in BIGNUM
2226 structures to try and expose faulty code further on. For now, openssl will
2227 (in its default mode of operation) continue to tolerate the inconsistent
2228 forms that it has tolerated in the past, but authors and packagers should
2229 consider trying openssl and their own applications when compiled with
2230 these debugging symbols defined. It will help highlight potential bugs in
2231 their own code, and will improve the test coverage for OpenSSL itself. At
2232 some point, these tighter rules will become openssl's default to improve
2233 maintainability, though the assert()s and other overheads will remain only
2234 in debugging configurations. See bn.h for more details.
2235 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2237 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2238 that can only be obtained through BN_CTX_new() (which implicitly
2239 initialises it). The presence of this function only made it possible
2240 to overwrite an existing structure (and cause memory leaks).
2243 *) Because of the callback-based approach for implementing LHASH as a
2244 template type, lh_insert() adds opaque objects to hash-tables and
2245 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2246 to clean up those corresponding objects before destroying the hash table
2247 (and losing the object pointers). So some over-zealous constifications in
2248 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2249 objects as "const" and the lh_doall[_arg] callback wrappers are not
2250 prototyped to have "const" restrictions on the object pointers they are
2251 given (and so aren't required to cast them away any more).
2254 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2255 (speed) prefers to use its own implementation. The two implementations
2256 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2257 its object type properly exposed (MS_TM) instead of casting to/from "char
2258 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2259 aren't necessarily the greatest nomenclatures - but this is what was used
2260 internally to the implementation so I've used that for now.
2263 *) Ensure that deprecated functions do not get compiled when
2264 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2265 the self-tests were still using deprecated key-generation functions so
2266 these have been updated also.
2269 *) Reorganise PKCS#7 code to separate the digest location functionality
2270 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2271 New function PKCS7_set_digest() to set the digest type for PKCS#7
2272 digestedData type. Add additional code to correctly generate the
2273 digestedData type and add support for this type in PKCS7 initialization
2277 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2278 structure of type "other".
2281 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2282 sure the loop does correctly stop and breaking ("division by zero")
2283 modulus operations are not performed. The (pre-generated) prime
2284 table crypto/bn/bn_prime.h was already correct, but it could not be
2285 re-generated on some platforms because of the "division by zero"
2286 situation in the script.
2287 [Ralf S. Engelschall]
2289 *) Update support for ECC-based TLS ciphersuites according to
2290 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2291 SHA-1 now is only used for "small" curves (where the
2292 representation of a field element takes up to 24 bytes); for
2293 larger curves, the field element resulting from ECDH is directly
2294 used as premaster secret.
2295 [Douglas Stebila (Sun Microsystems Laboratories)]
2297 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2298 curve secp160r1 to the tests.
2299 [Douglas Stebila (Sun Microsystems Laboratories)]
2301 *) Add the possibility to load symbols globally with DSO.
2302 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2304 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2305 control of the error stack.
2308 *) Add support for STORE in ENGINE.
2311 *) Add the STORE type. The intention is to provide a common interface
2312 to certificate and key stores, be they simple file-based stores, or
2313 HSM-type store, or LDAP stores, or...
2314 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2317 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2318 pass a list of arguments to any function as well as provide a way
2319 for a function to pass data back to the caller.
2322 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2323 works like BUF_strdup() but can be used to duplicate a portion of
2324 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2328 *) Add the function sk_find_ex() which works like sk_find(), but will
2329 return an index to an element even if an exact match couldn't be
2330 found. The index is guaranteed to point at the element where the
2331 searched-for key would be inserted to preserve sorting order.
2334 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2335 takes an extra flags argument for optional functionality. Currently,
2336 the following flags are defined:
2338 OBJ_BSEARCH_VALUE_ON_NOMATCH
2339 This one gets OBJ_bsearch_ex() to return a pointer to the first
2340 element where the comparing function returns a negative or zero
2343 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2344 This one gets OBJ_bsearch_ex() to return a pointer to the first
2345 element where the comparing function returns zero. This is useful
2346 if there are more than one element where the comparing function
2350 *) Make it possible to create self-signed certificates with 'openssl ca'
2351 in such a way that the self-signed certificate becomes part of the
2352 CA database and uses the same mechanisms for serial number generation
2353 as all other certificate signing. The new flag '-selfsign' enables
2354 this functionality. Adapt CA.sh and CA.pl.in.
2357 *) Add functionality to check the public key of a certificate request
2358 against a given private. This is useful to check that a certificate
2359 request can be signed by that key (self-signing).
2362 *) Make it possible to have multiple active certificates with the same
2363 subject in the CA index file. This is done only if the keyword
2364 'unique_subject' is set to 'no' in the main CA section (default
2365 if 'CA_default') of the configuration file. The value is saved
2366 with the database itself in a separate index attribute file,
2367 named like the index file with '.attr' appended to the name.
2370 *) Generate muti valued AVAs using '+' notation in config files for
2374 *) Support for nameConstraints certificate extension.
2377 *) Support for policyConstraints certificate extension.
2380 *) Support for policyMappings certificate extension.
2383 *) Make sure the default DSA_METHOD implementation only uses its
2384 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2385 and change its own handlers to be NULL so as to remove unnecessary
2386 indirection. This lets alternative implementations fallback to the
2387 default implementation more easily.
2390 *) Support for directoryName in GeneralName related extensions
2394 *) Make it possible to link applications using Makefile.shared.
2395 Make that possible even when linking against static libraries!
2398 *) Support for single pass processing for S/MIME signing. This now
2399 means that S/MIME signing can be done from a pipe, in addition
2400 cleartext signing (multipart/signed type) is effectively streaming
2401 and the signed data does not need to be all held in memory.
2403 This is done with a new flag PKCS7_STREAM. When this flag is set
2404 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2405 is done after the data is output (and digests calculated) in
2406 SMIME_write_PKCS7().
2409 *) Add full support for -rpath/-R, both in shared libraries and
2410 applications, at least on the platforms where it's known how
2414 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2415 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2416 will now compute a table of multiples of the generator that
2417 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2418 faster (notably in the case of a single point multiplication,
2419 scalar * generator).
2420 [Nils Larsch, Bodo Moeller]
2422 *) IPv6 support for certificate extensions. The various extensions
2423 which use the IP:a.b.c.d can now take IPv6 addresses using the
2424 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2428 *) Added an ENGINE that implements RSA by performing private key
2429 exponentiations with the GMP library. The conversions to and from
2430 GMP's mpz_t format aren't optimised nor are any montgomery forms
2431 cached, and on x86 it appears OpenSSL's own performance has caught up.
2432 However there are likely to be other architectures where GMP could
2433 provide a boost. This ENGINE is not built in by default, but it can be
2434 specified at Configure time and should be accompanied by the necessary
2435 linker additions, eg;
2436 ./config -DOPENSSL_USE_GMP -lgmp
2439 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2440 testing availability of engines with "-t" - the old behaviour is
2441 produced by increasing the feature's verbosity with "-tt".
2444 *) ECDSA routines: under certain error conditions uninitialized BN objects
2445 could be freed. Solution: make sure initialization is performed early
2446 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2450 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2451 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2452 software implementations. For DSA and DH, parameter generation can
2453 also be overriden by providing the appropriate method callbacks.
2456 *) Change the "progress" mechanism used in key-generation and
2457 primality testing to functions that take a new BN_GENCB pointer in
2458 place of callback/argument pairs. The new API functions have "_ex"
2459 postfixes and the older functions are reimplemented as wrappers for
2460 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2461 declarations of the old functions to help (graceful) attempts to
2462 migrate to the new functions. Also, the new key-generation API
2463 functions operate on a caller-supplied key-structure and return
2464 success/failure rather than returning a key or NULL - this is to
2465 help make "keygen" another member function of RSA_METHOD etc.
2467 Example for using the new callback interface:
2469 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2473 BN_GENCB_set(&my_cb, my_callback, my_arg);
2475 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2476 /* For the meaning of a, b in calls to my_callback(), see the
2477 * documentation of the function that calls the callback.
2478 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2479 * my_callback should return 1 if it wants BN_is_prime_ex()
2480 * to continue, or 0 to stop.
2485 *) Change the ZLIB compression method to be stateful, and make it
2486 available to TLS with the number defined in
2487 draft-ietf-tls-compression-04.txt.
2490 *) Add the ASN.1 structures and functions for CertificatePair, which
2491 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2493 CertificatePair ::= SEQUENCE {
2494 forward [0] Certificate OPTIONAL,
2495 reverse [1] Certificate OPTIONAL,
2496 -- at least one of the pair shall be present -- }
2498 Also implement the PEM functions to read and write certificate
2499 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2501 This needed to be defined, mostly for the sake of the LDAP
2502 attribute crossCertificatePair, but may prove useful elsewhere as
2506 *) Make it possible to inhibit symlinking of shared libraries in
2507 Makefile.shared, for Cygwin's sake.
2510 *) Extend the BIGNUM API by creating a function
2511 void BN_set_negative(BIGNUM *a, int neg);
2512 and a macro that behave like
2513 int BN_is_negative(const BIGNUM *a);
2515 to avoid the need to access 'a->neg' directly in applications.
2518 *) Implement fast modular reduction for pseudo-Mersenne primes
2519 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2520 EC_GROUP_new_curve_GFp() will now automatically use this
2522 [Nils Larsch <nla@trustcenter.de>]
2524 *) Add new lock type (CRYPTO_LOCK_BN).
2527 *) Change the ENGINE framework to automatically load engines
2528 dynamically from specific directories unless they could be
2529 found to already be built in or loaded. Move all the
2530 current engines except for the cryptodev one to a new
2532 The engines in engines/ are built as shared libraries if
2533 the "shared" options was given to ./Configure or ./config.
2534 Otherwise, they are inserted in libcrypto.a.
2535 /usr/local/ssl/engines is the default directory for dynamic
2536 engines, but that can be overriden at configure time through
2537 the usual use of --prefix and/or --openssldir, and at run
2538 time with the environment variable OPENSSL_ENGINES.
2539 [Geoff Thorpe and Richard Levitte]
2541 *) Add Makefile.shared, a helper makefile to build shared
2542 libraries. Addapt Makefile.org.
2545 *) Add version info to Win32 DLLs.
2546 [Peter 'Luna' Runestig" <peter@runestig.com>]
2548 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2549 can be added using this API to created arbitrary PKCS#12
2550 files while avoiding the low level API.
2552 New options to PKCS12_create(), key or cert can be NULL and
2553 will then be omitted from the output file. The encryption
2554 algorithm NIDs can be set to -1 for no encryption, the mac
2555 iteration count can be set to 0 to omit the mac.
2557 Enhance pkcs12 utility by making the -nokeys and -nocerts
2558 options work when creating a PKCS#12 file. New option -nomac
2559 to omit the mac, NONE can be set for an encryption algorithm.
2560 New code is modified to use the enhanced PKCS12_create()
2561 instead of the low level API.
2564 *) Extend ASN1 encoder to support indefinite length constructed
2565 encoding. This can output sequences tags and octet strings in
2566 this form. Modify pk7_asn1.c to support indefinite length
2567 encoding. This is experimental and needs additional code to
2568 be useful, such as an ASN1 bio and some enhanced streaming
2571 Extend template encode functionality so that tagging is passed
2572 down to the template encoder.
2575 *) Let 'openssl req' fail if an argument to '-newkey' is not
2576 recognized instead of using RSA as a default.
2579 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2580 As these are not official, they are not included in "ALL";
2581 the "ECCdraft" ciphersuite group alias can be used to select them.
2582 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2584 *) Add ECDH engine support.
2585 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2587 *) Add ECDH in new directory crypto/ecdh/.
2588 [Douglas Stebila (Sun Microsystems Laboratories)]
2590 *) Let BN_rand_range() abort with an error after 100 iterations
2591 without success (which indicates a broken PRNG).
2594 *) Change BN_mod_sqrt() so that it verifies that the input value
2595 is really the square of the return value. (Previously,
2596 BN_mod_sqrt would show GIGO behaviour.)
2599 *) Add named elliptic curves over binary fields from X9.62, SECG,
2600 and WAP/WTLS; add OIDs that were still missing.
2602 [Sheueling Chang Shantz and Douglas Stebila
2603 (Sun Microsystems Laboratories)]
2605 *) Extend the EC library for elliptic curves over binary fields
2606 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2609 EC_GF2m_simple_method
2613 EC_GROUP_new_curve_GF2m
2614 EC_GROUP_set_curve_GF2m
2615 EC_GROUP_get_curve_GF2m
2616 EC_POINT_set_affine_coordinates_GF2m
2617 EC_POINT_get_affine_coordinates_GF2m
2618 EC_POINT_set_compressed_coordinates_GF2m
2620 Point compression for binary fields is disabled by default for
2621 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2624 As binary polynomials are represented as BIGNUMs, various members
2625 of the EC_GROUP and EC_POINT data structures can be shared
2626 between the implementations for prime fields and binary fields;
2627 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2628 are essentially identical to their ..._GFp counterparts.
2629 (For simplicity, the '..._GFp' prefix has been dropped from
2630 various internal method names.)
2632 An internal 'field_div' method (similar to 'field_mul' and
2633 'field_sqr') has been added; this is used only for binary fields.
2635 [Sheueling Chang Shantz and Douglas Stebila
2636 (Sun Microsystems Laboratories)]
2638 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2639 through methods ('mul', 'precompute_mult').
2641 The generic implementations (now internally called 'ec_wNAF_mul'
2642 and 'ec_wNAF_precomputed_mult') remain the default if these
2643 methods are undefined.
2645 [Sheueling Chang Shantz and Douglas Stebila
2646 (Sun Microsystems Laboratories)]
2648 *) New function EC_GROUP_get_degree, which is defined through
2649 EC_METHOD. For curves over prime fields, this returns the bit
2650 length of the modulus.
2652 [Sheueling Chang Shantz and Douglas Stebila
2653 (Sun Microsystems Laboratories)]
2655 *) New functions EC_GROUP_dup, EC_POINT_dup.
2656 (These simply call ..._new and ..._copy).
2658 [Sheueling Chang Shantz and Douglas Stebila
2659 (Sun Microsystems Laboratories)]
2661 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2662 Polynomials are represented as BIGNUMs (where the sign bit is not
2663 used) in the following functions [macros]:
2666 BN_GF2m_sub [= BN_GF2m_add]
2667 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2668 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2669 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2671 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2672 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2673 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2674 BN_GF2m_cmp [= BN_ucmp]
2676 (Note that only the 'mod' functions are actually for fields GF(2^m).
2677 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2679 For some functions, an the irreducible polynomial defining a
2680 field can be given as an 'unsigned int[]' with strictly
2681 decreasing elements giving the indices of those bits that are set;
2682 i.e., p[] represents the polynomial
2683 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2685 p[0] > p[1] > ... > p[k] = 0.
2686 This applies to the following functions:
2691 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2692 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2694 BN_GF2m_mod_sqrt_arr
2695 BN_GF2m_mod_solve_quad_arr
2699 Conversion can be performed by the following functions:
2704 bntest.c has additional tests for binary polynomial arithmetic.
2706 Two implementations for BN_GF2m_mod_div() are available.
2707 The default algorithm simply uses BN_GF2m_mod_inv() and
2708 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2709 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2710 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2712 [Sheueling Chang Shantz and Douglas Stebila
2713 (Sun Microsystems Laboratories)]
2715 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2716 functionality is disabled at compile-time.
2717 [Douglas Stebila <douglas.stebila@sun.com>]
2719 *) Change default behaviour of 'openssl asn1parse' so that more
2720 information is visible when viewing, e.g., a certificate:
2722 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2723 mode the content of non-printable OCTET STRINGs is output in a
2724 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2725 avoid the appearance of a printable string.
2726 [Nils Larsch <nla@trustcenter.de>]
2728 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2730 EC_GROUP_set_asn1_flag()
2731 EC_GROUP_get_asn1_flag()
2732 EC_GROUP_set_point_conversion_form()
2733 EC_GROUP_get_point_conversion_form()
2734 These control ASN1 encoding details:
2735 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2736 has been set to OPENSSL_EC_NAMED_CURVE.
2737 - Points are encoded in uncompressed form by default; options for
2738 asn1_for are as for point2oct, namely
2739 POINT_CONVERSION_COMPRESSED
2740 POINT_CONVERSION_UNCOMPRESSED
2741 POINT_CONVERSION_HYBRID
2743 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2746 EC_GROUP_get0_seed()
2747 EC_GROUP_get_seed_len()
2748 This is used only for ASN1 purposes (so far).
2749 [Nils Larsch <nla@trustcenter.de>]
2751 *) Add 'field_type' member to EC_METHOD, which holds the NID
2752 of the appropriate field type OID. The new function
2753 EC_METHOD_get_field_type() returns this value.
2754 [Nils Larsch <nla@trustcenter.de>]
2759 EC_POINT_point2hex()
2760 EC_POINT_hex2point()
2761 providing useful interfaces to EC_POINT_point2oct() and
2762 EC_POINT_oct2point().
2763 [Nils Larsch <nla@trustcenter.de>]
2765 *) Change internals of the EC library so that the functions
2766 EC_GROUP_set_generator()
2767 EC_GROUP_get_generator()
2768 EC_GROUP_get_order()
2769 EC_GROUP_get_cofactor()
2770 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2771 to methods, which would lead to unnecessary code duplication when
2772 adding different types of curves.
2773 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2775 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2776 arithmetic, and such that modified wNAFs are generated
2777 (which avoid length expansion in many cases).
2780 *) Add a function EC_GROUP_check_discriminant() (defined via
2781 EC_METHOD) that verifies that the curve discriminant is non-zero.
2783 Add a function EC_GROUP_check() that makes some sanity tests
2784 on a EC_GROUP, its generator and order. This includes
2785 EC_GROUP_check_discriminant().
2786 [Nils Larsch <nla@trustcenter.de>]
2788 *) Add ECDSA in new directory crypto/ecdsa/.
2790 Add applications 'openssl ecparam' and 'openssl ecdsa'
2791 (these are based on 'openssl dsaparam' and 'openssl dsa').
2793 ECDSA support is also included in various other files across the
2794 library. Most notably,
2795 - 'openssl req' now has a '-newkey ecdsa:file' option;
2796 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2797 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2798 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2799 them suitable for ECDSA where domain parameters must be
2800 extracted before the specific public key;
2801 - ECDSA engine support has been added.
2802 [Nils Larsch <nla@trustcenter.de>]
2804 *) Include some named elliptic curves, and add OIDs from X9.62,
2805 SECG, and WAP/WTLS. Each curve can be obtained from the new
2807 EC_GROUP_new_by_curve_name(),
2808 and the list of available named curves can be obtained with
2809 EC_get_builtin_curves().
2810 Also add a 'curve_name' member to EC_GROUP objects, which can be
2812 EC_GROUP_set_curve_name()
2813 EC_GROUP_get_curve_name()
2814 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2816 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2817 was actually never needed) and in BN_mul(). The removal in BN_mul()
2818 required a small change in bn_mul_part_recursive() and the addition
2819 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2820 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2821 bn_sub_words() and bn_add_words() except they take arrays with
2825 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2827 *) Cleanse PEM buffers before freeing them since they may contain
2829 [Benjamin Bennett <ben@psc.edu>]
2831 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2832 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2833 authentication-only ciphersuites.
2836 *) Since AES128 and AES256 share a single mask bit in the logic of
2837 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2838 kludge to work properly if AES128 is available and AES256 isn't.
2841 *) Expand security boundary to match 1.1.1 module.
2844 *) Remove redundant features: hash file source, editing of test vectors
2845 modify fipsld to use external fips_premain.c signature.
2848 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2849 run algorithm test programs.
2852 *) Make algorithm test programs more tolerant of whitespace.
2855 *) Have SSL/TLS server implementation tolerate "mismatched" record
2856 protocol version while receiving ClientHello even if the
2857 ClientHello is fragmented. (The server can't insist on the
2858 particular protocol version it has chosen before the ServerHello
2859 message has informed the client about his choice.)
2862 *) Load error codes if they are not already present instead of using a
2863 static variable. This allows them to be cleanly unloaded and reloaded.
2866 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2868 *) Introduce limits to prevent malicious keys being able to
2869 cause a denial of service. (CVE-2006-2940)
2870 [Steve Henson, Bodo Moeller]
2872 *) Fix ASN.1 parsing of certain invalid structures that can result
2873 in a denial of service. (CVE-2006-2937) [Steve Henson]
2875 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2876 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2878 *) Fix SSL client code which could crash if connecting to a
2879 malicious SSLv2 server. (CVE-2006-4343)
2880 [Tavis Ormandy and Will Drewry, Google Security Team]
2882 *) Change ciphersuite string processing so that an explicit
2883 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2884 will no longer include "AES128-SHA"), and any other similar
2885 ciphersuite (same bitmap) from *other* protocol versions (so that
2886 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2887 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2888 changes from 0.9.8b and 0.9.8d.
2891 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2893 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2894 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2896 *) Change the Unix randomness entropy gathering to use poll() when
2897 possible instead of select(), since the latter has some
2898 undesirable limitations.
2899 [Darryl Miles via Richard Levitte and Bodo Moeller]
2901 *) Disable rogue ciphersuites:
2903 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2904 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2905 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2907 The latter two were purportedly from
2908 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2911 Also deactive the remaining ciphersuites from
2912 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2913 unofficial, and the ID has long expired.
2916 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2917 dual-core machines) and other potential thread-safety issues.
2920 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2922 *) Adapt fipsld and the build system to link against the validated FIPS
2923 module in FIPS mode.
2926 *) Fixes for VC++ 2005 build under Windows.
2929 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2930 from a Windows bash shell such as MSYS. It is autodetected from the
2931 "config" script when run from a VC++ environment. Modify standard VC++
2932 build to use fipscanister.o from the GNU make build.
2935 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2937 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2938 The value now differs depending on if you build for FIPS or not.
2939 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2940 safely run with a non-FIPSed libcrypto, as it may crash because of
2941 the difference induced by this change.
2944 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2946 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2947 (part of SSL_OP_ALL). This option used to disable the
2948 countermeasure against man-in-the-middle protocol-version
2949 rollback in the SSL 2.0 server implementation, which is a bad
2950 idea. (CVE-2005-2969)
2952 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2953 for Information Security, National Institute of Advanced Industrial
2954 Science and Technology [AIST], Japan)]
2956 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2957 mainly for FIPS compliance and not fully integrated at this stage.
2960 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2961 the exponentiation using a fixed-length exponent. (Otherwise,
2962 the information leaked through timing could expose the secret key
2963 after many signatures; cf. Bleichenbacher's attack on DSA with
2967 *) Make a new fixed-window mod_exp implementation the default for
2968 RSA, DSA, and DH private-key operations so that the sequence of
2969 squares and multiplies and the memory access pattern are
2970 independent of the particular secret key. This will mitigate
2971 cache-timing and potential related attacks.
2973 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2974 and this is automatically used by BN_mod_exp_mont() if the new flag
2975 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2976 will use this BN flag for private exponents unless the flag
2977 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2978 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2980 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2982 *) Change the client implementation for SSLv23_method() and
2983 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2984 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2985 (Previously, the SSL 2.0 backwards compatible Client Hello
2986 message format would be used even with SSL_OP_NO_SSLv2.)
2989 *) Add support for smime-type MIME parameter in S/MIME messages which some
2993 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2994 a threadsafe manner. Modify rsa code to use new function and add calls
2995 to dsa and dh code (which had race conditions before).
2998 *) Include the fixed error library code in the C error file definitions
2999 instead of fixing them up at runtime. This keeps the error code
3000 structures constant.
3003 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3005 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3008 *) Fixes for newer kerberos headers. NB: the casts are needed because
3009 the 'length' field is signed on one version and unsigned on another
3010 with no (?) obvious way to tell the difference, without these VC++
3011 complains. Also the "definition" of FAR (blank) is no longer included
3012 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3013 some needed definitions.
3016 *) Undo Cygwin change.
3019 *) Added support for proxy certificates according to RFC 3820.
3020 Because they may be a security thread to unaware applications,
3021 they must be explicitely allowed in run-time. See
3022 docs/HOWTO/proxy_certificates.txt for further information.
3025 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3027 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3028 server and client random values. Previously
3029 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3030 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3032 This change has negligible security impact because:
3034 1. Server and client random values still have 24 bytes of pseudo random
3037 2. Server and client random values are sent in the clear in the initial
3040 3. The master secret is derived using the premaster secret (48 bytes in
3041 size for static RSA ciphersuites) as well as client server and random
3044 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3047 [Stephen Henson, reported by UK NISCC]
3049 *) Use Windows randomness collection on Cygwin.
3052 *) Fix hang in EGD/PRNGD query when communication socket is closed
3053 prematurely by EGD/PRNGD.
3054 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3056 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3059 *) Back-port of selected performance improvements from development
3060 branch, as well as improved support for PowerPC platforms.
3063 *) Add lots of checks for memory allocation failure, error codes to indicate
3064 failure and freeing up memory if a failure occurs.
3065 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3067 *) Add new -passin argument to dgst.
3070 *) Perform some character comparisons of different types in X509_NAME_cmp:
3071 this is needed for some certificates that reencode DNs into UTF8Strings
3072 (in violation of RFC3280) and can't or wont issue name rollover
3076 *) Make an explicit check during certificate validation to see that
3077 the CA setting in each certificate on the chain is correct. As a
3078 side effect always do the following basic checks on extensions,
3079 not just when there's an associated purpose to the check:
3081 - if there is an unhandled critical extension (unless the user
3082 has chosen to ignore this fault)
3083 - if the path length has been exceeded (if one is set at all)
3084 - that certain extensions fit the associated purpose (if one has
3088 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3090 *) Avoid a race condition when CRLs are checked in a multi threaded
3091 environment. This would happen due to the reordering of the revoked
3092 entries during signature checking and serial number lookup. Now the
3093 encoding is cached and the serial number sort performed under a lock.
3094 Add new STACK function sk_is_sorted().
3097 *) Add Delta CRL to the extension code.
3100 *) Various fixes to s3_pkt.c so alerts are sent properly.
3101 [David Holmes <d.holmes@f5.com>]
3103 *) Reduce the chances of duplicate issuer name and serial numbers (in
3104 violation of RFC3280) using the OpenSSL certificate creation utilities.
3105 This is done by creating a random 64 bit value for the initial serial
3106 number when a serial number file is created or when a self signed
3107 certificate is created using 'openssl req -x509'. The initial serial
3108 number file is created using 'openssl x509 -next_serial' in CA.pl
3109 rather than being initialized to 1.
3112 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3114 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3115 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3116 [Joe Orton, Steve Henson]
3118 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3120 [Joe Orton, Steve Henson]
3122 *) Make it possible to have multiple active certificates with the same
3123 subject in the CA index file. This is done only if the keyword
3124 'unique_subject' is set to 'no' in the main CA section (default
3125 if 'CA_default') of the configuration file. The value is saved
3126 with the database itself in a separate index attribute file,
3127 named like the index file with '.attr' appended to the name.
3130 *) X509 verify fixes. Disable broken certificate workarounds when
3131 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3132 keyUsage extension present. Don't accept CRLs with unhandled critical
3133 extensions: since verify currently doesn't process CRL extensions this
3134 rejects a CRL with *any* critical extensions. Add new verify error codes
3138 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3139 A clarification of RFC2560 will require the use of OCTET STRINGs and
3140 some implementations cannot handle the current raw format. Since OpenSSL
3141 copies and compares OCSP nonces as opaque blobs without any attempt at
3142 parsing them this should not create any compatibility issues.
3145 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3146 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3147 this HMAC (and other) operations are several times slower than OpenSSL
3151 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3152 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3154 *) Use the correct content when signing type "other".
3157 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3159 *) Fix various bugs revealed by running the NISCC test suite:
3161 Stop out of bounds reads in the ASN1 code when presented with
3162 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3164 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3166 If verify callback ignores invalid public key errors don't try to check
3167 certificate signature with the NULL public key.
3171 *) New -ignore_err option in ocsp application to stop the server
3172 exiting on the first error in a request.
3175 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3176 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3180 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3181 extra data after the compression methods not only for TLS 1.0
3182 but also for SSL 3.0 (as required by the specification).
3183 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3185 *) Change X509_certificate_type() to mark the key as exported/exportable
3186 when it's 512 *bits* long, not 512 bytes.
3189 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3190 blocks during encryption.
3193 *) Various fixes to base64 BIO and non blocking I/O. On write
3194 flushes were not handled properly if the BIO retried. On read
3195 data was not being buffered properly and had various logic bugs.
3196 This also affects blocking I/O when the data being decoded is a
3200 *) Various S/MIME bugfixes and compatibility changes:
3201 output correct application/pkcs7 MIME type if
3202 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3203 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3204 of files as .eml work). Correctly handle very long lines in MIME
3208 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3210 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3211 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3212 a protocol version number mismatch like a decryption error
3213 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3216 *) Turn on RSA blinding by default in the default implementation
3217 to avoid a timing attack. Applications that don't want it can call
3218 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3219 They would be ill-advised to do so in most cases.
3220 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3222 *) Change RSA blinding code so that it works when the PRNG is not
3223 seeded (in this case, the secret RSA exponent is abused as
3224 an unpredictable seed -- if it is not unpredictable, there
3225 is no point in blinding anyway). Make RSA blinding thread-safe
3226 by remembering the creator's thread ID in rsa->blinding and
3227 having all other threads use local one-time blinding factors
3228 (this requires more computation than sharing rsa->blinding, but
3229 avoids excessive locking; and if an RSA object is not shared
3230 between threads, blinding will still be very fast).
3233 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3234 ENGINE as defaults for all supported algorithms irrespective of
3235 the 'flags' parameter. 'flags' is now honoured, so applications
3236 should make sure they are passing it correctly.
3239 *) Target "mingw" now allows native Windows code to be generated in
3240 the Cygwin environment as well as with the MinGW compiler.
3243 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3245 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3246 via timing by performing a MAC computation even if incorrrect
3247 block cipher padding has been found. This is a countermeasure
3248 against active attacks where the attacker has to distinguish
3249 between bad padding and a MAC verification error. (CVE-2003-0078)
3251 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3252 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3253 Martin Vuagnoux (EPFL, Ilion)]
3255 *) Make the no-err option work as intended. The intention with no-err
3256 is not to have the whole error stack handling routines removed from
3257 libcrypto, it's only intended to remove all the function name and
3258 reason texts, thereby removing some of the footprint that may not
3259 be interesting if those errors aren't displayed anyway.
3261 NOTE: it's still possible for any application or module to have it's
3262 own set of error texts inserted. The routines are there, just not
3263 used by default when no-err is given.
3266 *) Add support for FreeBSD on IA64.
3267 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3269 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3270 Kerberos function mit_des_cbc_cksum(). Before this change,
3271 the value returned by DES_cbc_cksum() was like the one from
3272 mit_des_cbc_cksum(), except the bytes were swapped.
3273 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3275 *) Allow an application to disable the automatic SSL chain building.
3276 Before this a rather primitive chain build was always performed in
3277 ssl3_output_cert_chain(): an application had no way to send the
3278 correct chain if the automatic operation produced an incorrect result.
3280 Now the chain builder is disabled if either:
3282 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3284 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3286 The reasoning behind this is that an application would not want the
3287 auto chain building to take place if extra chain certificates are
3288 present and it might also want a means of sending no additional
3289 certificates (for example the chain has two certificates and the
3293 *) Add the possibility to build without the ENGINE framework.
3294 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3296 *) Under Win32 gmtime() can return NULL: check return value in
3297 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3300 *) DSA routines: under certain error conditions uninitialized BN objects
3301 could be freed. Solution: make sure initialization is performed early
3302 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3303 Nils Larsch <nla@trustcenter.de> via PR#459)
3306 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3307 checked on reconnect on the client side, therefore session resumption
3308 could still fail with a "ssl session id is different" error. This
3309 behaviour is masked when SSL_OP_ALL is used due to
3310 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3311 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3312 followup to PR #377.
3315 *) IA-32 assembler support enhancements: unified ELF targets, support
3316 for SCO/Caldera platforms, fix for Cygwin shared build.
3319 *) Add support for FreeBSD on sparc64. As a consequence, support for
3320 FreeBSD on non-x86 processors is separate from x86 processors on
3321 the config script, much like the NetBSD support.
3322 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3324 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3326 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3329 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3330 code (06) was taken as the first octet of the session ID and the last
3331 octet was ignored consequently. As a result SSLv2 client side session
3332 caching could not have worked due to the session ID mismatch between
3334 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3338 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3339 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3343 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3344 seems that in spite of existing for more than a year, many application
3345 author have done nothing to provide the necessary callbacks, which
3346 means that this particular engine will not work properly anywhere.
3347 This is a very unfortunate situation which forces us, in the name
3348 of usability, to give the hw_ncipher.c a static lock, which is part
3350 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3351 appear in 0.9.8 or later. We EXPECT application authors to have
3352 dealt properly with this when 0.9.8 is released (unless we actually
3353 make such changes in the libcrypto locking code that changes will
3354 have to be made anyway).
3357 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3358 octets have been read, EOF or an error occurs. Without this change
3359 some truncated ASN1 structures will not produce an error.
3362 *) Disable Heimdal support, since it hasn't been fully implemented.
3363 Still give the possibility to force the use of Heimdal, but with
3364 warnings and a request that patches get sent to openssl-dev.
3367 *) Add the VC-CE target, introduce the WINCE sysname, and add
3368 INSTALL.WCE and appropriate conditionals to make it build.
3369 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3371 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3372 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3373 edit numbers of the version.
3374 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3376 *) Introduce safe string copy and catenation functions
3377 (BUF_strlcpy() and BUF_strlcat()).
3378 [Ben Laurie (CHATS) and Richard Levitte]
3380 *) Avoid using fixed-size buffers for one-line DNs.
3381 [Ben Laurie (CHATS)]
3383 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3384 resizing buffers containing secrets, and use where appropriate.
3385 [Ben Laurie (CHATS)]
3387 *) Avoid using fixed size buffers for configuration file location.
3388 [Ben Laurie (CHATS)]
3390 *) Avoid filename truncation for various CA files.
3391 [Ben Laurie (CHATS)]
3393 *) Use sizeof in preference to magic numbers.
3394 [Ben Laurie (CHATS)]
3396 *) Avoid filename truncation in cert requests.
3397 [Ben Laurie (CHATS)]
3399 *) Add assertions to check for (supposedly impossible) buffer
3401 [Ben Laurie (CHATS)]
3403 *) Don't cache truncated DNS entries in the local cache (this could
3404 potentially lead to a spoofing attack).
3405 [Ben Laurie (CHATS)]
3407 *) Fix various buffers to be large enough for hex/decimal
3408 representations in a platform independent manner.
3409 [Ben Laurie (CHATS)]
3411 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3412 resizing buffers containing secrets, and use where appropriate.
3413 [Ben Laurie (CHATS)]
3415 *) Add BIO_indent() to avoid much slightly worrying code to do
3417 [Ben Laurie (CHATS)]
3419 *) Convert sprintf()/BIO_puts() to BIO_printf().
3420 [Ben Laurie (CHATS)]
3422 *) buffer_gets() could terminate with the buffer only half
3424 [Ben Laurie (CHATS)]
3426 *) Add assertions to prevent user-supplied crypto functions from
3427 overflowing internal buffers by having large block sizes, etc.
3428 [Ben Laurie (CHATS)]
3430 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3432 [Ben Laurie (CHATS)]
3434 *) Eliminate unused copy of key in RC4.
3435 [Ben Laurie (CHATS)]
3437 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3438 [Ben Laurie (CHATS)]
3440 *) Fix off-by-one error in EGD path.
3441 [Ben Laurie (CHATS)]
3443 *) If RANDFILE path is too long, ignore instead of truncating.
3444 [Ben Laurie (CHATS)]
3446 *) Eliminate unused and incorrectly sized X.509 structure
3448 [Ben Laurie (CHATS)]
3450 *) Eliminate unused and dangerous function knumber().
3451 [Ben Laurie (CHATS)]
3453 *) Eliminate unused and dangerous structure, KSSL_ERR.
3454 [Ben Laurie (CHATS)]
3456 *) Protect against overlong session ID context length in an encoded
3457 session object. Since these are local, this does not appear to be
3459 [Ben Laurie (CHATS)]
3461 *) Change from security patch (see 0.9.6e below) that did not affect
3462 the 0.9.6 release series:
3464 Remote buffer overflow in SSL3 protocol - an attacker could
3465 supply an oversized master key in Kerberos-enabled versions.
3467 [Ben Laurie (CHATS)]
3469 *) Change the SSL kerb5 codes to match RFC 2712.
3472 *) Make -nameopt work fully for req and add -reqopt switch.
3473 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3475 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3476 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3478 *) Make sure tests can be performed even if the corresponding algorithms
3479 have been removed entirely. This was also the last step to make
3480 OpenSSL compilable with DJGPP under all reasonable conditions.
3481 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3483 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3484 to allow version independent disabling of normally unselected ciphers,
3485 which may be activated as a side-effect of selecting a single cipher.
3487 (E.g., cipher list string "RSA" enables ciphersuites that are left
3488 out of "ALL" because they do not provide symmetric encryption.
3489 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3490 [Lutz Jaenicke, Bodo Moeller]
3492 *) Add appropriate support for separate platform-dependent build
3493 directories. The recommended way to make a platform-dependent
3494 build directory is the following (tested on Linux), maybe with
3497 # Place yourself outside of the OpenSSL source tree. In
3498 # this example, the environment variable OPENSSL_SOURCE
3499 # is assumed to contain the absolute OpenSSL source directory.
3500 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3501 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3502 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3503 mkdir -p `dirname $F`
3504 ln -s $OPENSSL_SOURCE/$F $F
3507 To be absolutely sure not to disturb the source tree, a "make clean"
3508 is a good thing. If it isn't successfull, don't worry about it,
3509 it probably means the source directory is very clean.
3512 *) Make sure any ENGINE control commands make local copies of string
3513 pointers passed to them whenever necessary. Otherwise it is possible
3514 the caller may have overwritten (or deallocated) the original string
3515 data when a later ENGINE operation tries to use the stored values.
3516 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3518 *) Improve diagnostics in file reading and command-line digests.
3519 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3521 *) Add AES modes CFB and OFB to the object database. Correct an
3522 error in AES-CFB decryption.
3525 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3526 allows existing EVP_CIPHER_CTX structures to be reused after
3527 calling EVP_*Final(). This behaviour is used by encryption
3528 BIOs and some applications. This has the side effect that
3529 applications must explicitly clean up cipher contexts with
3530 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3533 *) Check the values of dna and dnb in bn_mul_recursive before calling
3534 bn_mul_comba (a non zero value means the a or b arrays do not contain
3535 n2 elements) and fallback to bn_mul_normal if either is not zero.
3538 *) Fix escaping of non-ASCII characters when using the -subj option
3539 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3542 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3543 form for "surname", serialNumber has no short form.
3544 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3545 therefore remove "mail" short name for "internet 7".
3546 The OID for unique identifiers in X509 certificates is
3547 x500UniqueIdentifier, not uniqueIdentifier.
3548 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3551 *) Add an "init" command to the ENGINE config module and auto initialize
3552 ENGINEs. Without any "init" command the ENGINE will be initialized
3553 after all ctrl commands have been executed on it. If init=1 the
3554 ENGINE is initailized at that point (ctrls before that point are run
3555 on the uninitialized ENGINE and after on the initialized one). If
3556 init=0 then the ENGINE will not be iniatialized at all.
3559 *) Fix the 'app_verify_callback' interface so that the user-defined
3560 argument is actually passed to the callback: In the
3561 SSL_CTX_set_cert_verify_callback() prototype, the callback
3562 declaration has been changed from
3565 int (*cb)(X509_STORE_CTX *,void *);
3566 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3567 i=s->ctx->app_verify_callback(&ctx)
3568 has been changed into
3569 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3571 To update applications using SSL_CTX_set_cert_verify_callback(),
3572 a dummy argument can be added to their callback functions.
3573 [D. K. Smetters <smetters@parc.xerox.com>]
3575 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3576 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3578 *) Add and OPENSSL_LOAD_CONF define which will cause
3579 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3580 This allows older applications to transparently support certain
3581 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3582 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3583 load the config file and OPENSSL_add_all_algorithms_conf() which will
3584 always load it have also been added.
3587 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3588 Adjust NIDs and EVP layer.
3589 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3591 *) Config modules support in openssl utility.
3593 Most commands now load modules from the config file,
3594 though in a few (such as version) this isn't done
3595 because it couldn't be used for anything.
3597 In the case of ca and req the config file used is
3598 the same as the utility itself: that is the -config
3599 command line option can be used to specify an
3603 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3604 use "openssl_conf" if filename is NULL use default openssl config file.
3607 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3608 config section name. Add a new flag to tolerate a missing config file
3609 and move code to CONF_modules_load_file().
3612 *) Support for crypto accelerator cards from Accelerated Encryption
3613 Processing, www.aep.ie. (Use engine 'aep')
3614 The support was copied from 0.9.6c [engine] and adapted/corrected
3615 to work with the new engine framework.
3616 [AEP Inc. and Richard Levitte]
3618 *) Support for SureWare crypto accelerator cards from Baltimore
3619 Technologies. (Use engine 'sureware')
3620 The support was copied from 0.9.6c [engine] and adapted
3621 to work with the new engine framework.
3624 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3625 make the newer ENGINE framework commands for the CHIL engine work.
3626 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3628 *) Make it possible to produce shared libraries on ReliantUNIX.
3629 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3631 *) Add the configuration target debug-linux-ppro.
3632 Make 'openssl rsa' use the general key loading routines
3633 implemented in apps.c, and make those routines able to
3634 handle the key format FORMAT_NETSCAPE and the variant
3636 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3638 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3639 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3641 *) Add -keyform to rsautl, and document -engine.
3642 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3644 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3645 BIO_R_NO_SUCH_FILE error code rather than the generic
3646 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3649 *) Add new functions
3651 ERR_peek_last_error_line
3652 ERR_peek_last_error_line_data.
3653 These are similar to
3656 ERR_peek_error_line_data,
3657 but report on the latest error recorded rather than the first one
3658 still in the error queue.
3659 [Ben Laurie, Bodo Moeller]
3661 *) default_algorithms option in ENGINE config module. This allows things
3663 default_algorithms = ALL
3664 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3667 *) Prelminary ENGINE config module.
3670 *) New experimental application configuration code.
3673 *) Change the AES code to follow the same name structure as all other
3674 symmetric ciphers, and behave the same way. Move everything to
3675 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3676 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3678 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3679 [Ben Laurie and Theo de Raadt]
3681 *) Add option to output public keys in req command.
3682 [Massimiliano Pala madwolf@openca.org]
3684 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3685 (up to about 10% better than before for P-192 and P-224).
3688 *) New functions/macros
3690 SSL_CTX_set_msg_callback(ctx, cb)
3691 SSL_CTX_set_msg_callback_arg(ctx, arg)
3692 SSL_set_msg_callback(ssl, cb)
3693 SSL_set_msg_callback_arg(ssl, arg)
3695 to request calling a callback function
3697 void cb(int write_p, int version, int content_type,
3698 const void *buf, size_t len, SSL *ssl, void *arg)
3700 whenever a protocol message has been completely received
3701 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3702 protocol version according to which the SSL library interprets
3703 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3704 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3705 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3706 specification (change_cipher_spec(20), alert(21), handshake(22)).
3707 'buf' and 'len' point to the actual message, 'ssl' to the
3708 SSL object, and 'arg' is the application-defined value set by
3709 SSL[_CTX]_set_msg_callback_arg().
3711 'openssl s_client' and 'openssl s_server' have new '-msg' options
3712 to enable a callback that displays all protocol messages.
3715 *) Change the shared library support so shared libraries are built as
3716 soon as the corresponding static library is finished, and thereby get
3717 openssl and the test programs linked against the shared library.
3718 This still only happens when the keyword "shard" has been given to
3719 the configuration scripts.
3721 NOTE: shared library support is still an experimental thing, and
3722 backward binary compatibility is still not guaranteed.
3723 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3725 *) Add support for Subject Information Access extension.
3726 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3728 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3729 additional bytes when new memory had to be allocated, not just
3730 when reusing an existing buffer.
3733 *) New command line and configuration option 'utf8' for the req command.
3734 This allows field values to be specified as UTF8 strings.
3737 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3738 runs for the former and machine-readable output for the latter.
3741 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3742 of the e-mail address in the DN (i.e., it will go into a certificate
3743 extension only). The new configuration file option 'email_in_dn = no'
3744 has the same effect.
3745 [Massimiliano Pala madwolf@openca.org]
3747 *) Change all functions with names starting with des_ to be starting
3748 with DES_ instead. Add wrappers that are compatible with libdes,
3749 but are named _ossl_old_des_*. Finally, add macros that map the
3750 des_* symbols to the corresponding _ossl_old_des_* if libdes
3751 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3752 desired, the des_* symbols will be mapped to DES_*, with one
3755 Since we provide two compatibility mappings, the user needs to
3756 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3757 compatibility is desired. The default (i.e., when that macro
3758 isn't defined) is OpenSSL 0.9.6c compatibility.
3760 There are also macros that enable and disable the support of old
3761 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3762 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3763 are defined, the default will apply: to support the old des routines.
3765 In either case, one must include openssl/des.h to get the correct
3766 definitions. Do not try to just include openssl/des_old.h, that
3769 NOTE: This is a major break of an old API into a new one. Software
3770 authors are encouraged to switch to the DES_ style functions. Some
3771 time in the future, des_old.h and the libdes compatibility functions
3772 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3773 default), and then completely removed.
3776 *) Test for certificates which contain unsupported critical extensions.
3777 If such a certificate is found during a verify operation it is
3778 rejected by default: this behaviour can be overridden by either
3779 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3780 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3781 X509_supported_extension() has also been added which returns 1 if a
3782 particular extension is supported.
3785 *) Modify the behaviour of EVP cipher functions in similar way to digests
3786 to retain compatibility with existing code.
3789 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3790 compatibility with existing code. In particular the 'ctx' parameter does
3791 not have to be to be initialized before the call to EVP_DigestInit() and
3792 it is tidied up after a call to EVP_DigestFinal(). New function
3793 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3794 EVP_MD_CTX_copy() changed to not require the destination to be
3795 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3796 requires the destination to be valid.
3798 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3799 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3802 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3803 so that complete 'Handshake' protocol structures are kept in memory
3804 instead of overwriting 'msg_type' and 'length' with 'body' data.
3807 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3808 [Massimo Santin via Richard Levitte]
3810 *) Major restructuring to the underlying ENGINE code. This includes
3811 reduction of linker bloat, separation of pure "ENGINE" manipulation
3812 (initialisation, etc) from functionality dealing with implementations
3813 of specific crypto iterfaces. This change also introduces integrated
3814 support for symmetric ciphers and digest implementations - so ENGINEs
3815 can now accelerate these by providing EVP_CIPHER and EVP_MD
3816 implementations of their own. This is detailed in crypto/engine/README
3817 as it couldn't be adequately described here. However, there are a few
3818 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3819 were changed in the original introduction of ENGINE code have now
3820 reverted back - the hooking from this code to ENGINE is now a good
3821 deal more passive and at run-time, operations deal directly with
3822 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3823 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3824 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3825 they were not being used by the framework as there is no concept of a
3826 BIGNUM_METHOD and they could not be generalised to the new
3827 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3828 ENGINE_cpy() has been removed as it cannot be consistently defined in
3832 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3835 *) Change mkdef.pl to sort symbols that get the same entry number,
3836 and make sure the automatically generated functions ERR_load_*
3837 become part of libeay.num as well.
3840 *) New function SSL_renegotiate_pending(). This returns true once
3841 renegotiation has been requested (either SSL_renegotiate() call
3842 or HelloRequest/ClientHello receveived from the peer) and becomes
3843 false once a handshake has been completed.
3844 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3845 sends a HelloRequest, but does not ensure that a handshake takes
3846 place. SSL_renegotiate_pending() is useful for checking if the
3847 client has followed the request.)
3850 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3851 By default, clients may request session resumption even during
3852 renegotiation (if session ID contexts permit); with this option,
3853 session resumption is possible only in the first handshake.
3855 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3856 more bits available for options that should not be part of
3857 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3860 *) Add some demos for certificate and certificate request creation.
3863 *) Make maximum certificate chain size accepted from the peer application
3864 settable (SSL*_get/set_max_cert_list()), as proposed by
3865 "Douglas E. Engert" <deengert@anl.gov>.
3868 *) Add support for shared libraries for Unixware-7
3869 (Boyd Lynn Gerber <gerberb@zenez.com>).
3872 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3873 be done prior to destruction. Use this to unload error strings from
3874 ENGINEs that load their own error strings. NB: This adds two new API
3875 functions to "get" and "set" this destroy handler in an ENGINE.
3878 *) Alter all existing ENGINE implementations (except "openssl" and
3879 "openbsd") to dynamically instantiate their own error strings. This
3880 makes them more flexible to be built both as statically-linked ENGINEs
3881 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3882 Also, add stub code to each that makes building them as self-contained
3883 shared-libraries easier (see README.ENGINE).
3886 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3887 implementations into applications that are completely implemented in
3888 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3889 commands that can be used to configure what shared-library to load and
3890 to control aspects of the way it is handled. Also, made an update to
3891 the README.ENGINE file that brings its information up-to-date and
3892 provides some information and instructions on the "dynamic" ENGINE
3893 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3896 *) Make it possible to unload ranges of ERR strings with a new
3897 "ERR_unload_strings" function.
3900 *) Add a copy() function to EVP_MD.
3903 *) Make EVP_MD routines take a context pointer instead of just the
3904 md_data void pointer.
3907 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3908 that the digest can only process a single chunk of data
3909 (typically because it is provided by a piece of
3910 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3911 is only going to provide a single chunk of data, and hence the
3912 framework needn't accumulate the data for oneshot drivers.
3915 *) As with "ERR", make it possible to replace the underlying "ex_data"
3916 functions. This change also alters the storage and management of global
3917 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3918 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3919 index counters. The API functions that use this state have been changed
3920 to take a "class_index" rather than pointers to the class's local STACK
3921 and counter, and there is now an API function to dynamically create new
3922 classes. This centralisation allows us to (a) plug a lot of the
3923 thread-safety problems that existed, and (b) makes it possible to clean
3924 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3925 such data would previously have always leaked in application code and
3926 workarounds were in place to make the memory debugging turn a blind eye
3927 to it. Application code that doesn't use this new function will still
3928 leak as before, but their memory debugging output will announce it now
3929 rather than letting it slide.
3931 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3932 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3933 has a return value to indicate success or failure.
3936 *) Make it possible to replace the underlying "ERR" functions such that the
3937 global state (2 LHASH tables and 2 locks) is only used by the "default"
3938 implementation. This change also adds two functions to "get" and "set"
3939 the implementation prior to it being automatically set the first time
3940 any other ERR function takes place. Ie. an application can call "get",
3941 pass the return value to a module it has just loaded, and that module
3942 can call its own "set" function using that value. This means the
3943 module's "ERR" operations will use (and modify) the error state in the
3944 application and not in its own statically linked copy of OpenSSL code.
3947 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3948 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3949 the operation, and provides a more encapsulated way for external code
3950 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3951 to use these functions rather than manually incrementing the counts.
3953 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3956 *) Add EVP test program.
3959 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3962 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3963 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3964 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3965 These allow a CRL to be built without having to access X509_CRL fields
3966 directly. Modify 'ca' application to use new functions.
3969 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3970 bug workarounds. Rollback attack detection is a security feature.
3971 The problem will only arise on OpenSSL servers when TLSv1 is not
3972 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3973 Software authors not wanting to support TLSv1 will have special reasons
3974 for their choice and can explicitly enable this option.
3975 [Bodo Moeller, Lutz Jaenicke]
3977 *) Rationalise EVP so it can be extended: don't include a union of
3978 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3979 (similar to those existing for EVP_CIPHER_CTX).
3984 EVP_MD_CTX_init(&md); /* new function call */
3985 EVP_DigestInit(&md, EVP_sha1());
3986 EVP_DigestUpdate(&md, in, len);
3987 EVP_DigestFinal(&md, out, NULL);
3988 EVP_MD_CTX_cleanup(&md); /* new function call */
3992 *) Make DES key schedule conform to the usual scheme, as well as
3993 correcting its structure. This means that calls to DES functions
3994 now have to pass a pointer to a des_key_schedule instead of a
3995 plain des_key_schedule (which was actually always a pointer
3998 des_key_schedule ks;
4000 des_set_key_checked(..., &ks);
4001 des_ncbc_encrypt(..., &ks, ...);
4003 (Note that a later change renames 'des_...' into 'DES_...'.)
4006 *) Initial reduction of linker bloat: the use of some functions, such as
4007 PEM causes large amounts of unused functions to be linked in due to
4008 poor organisation. For example pem_all.c contains every PEM function
4009 which has a knock on effect of linking in large amounts of (unused)
4010 ASN1 code. Grouping together similar functions and splitting unrelated
4011 functions prevents this.
4014 *) Cleanup of EVP macros.
4017 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4018 correct _ecb suffix.
4021 *) Add initial OCSP responder support to ocsp application. The
4022 revocation information is handled using the text based index
4023 use by the ca application. The responder can either handle
4024 requests generated internally, supplied in files (for example
4025 via a CGI script) or using an internal minimal server.
4028 *) Add configuration choices to get zlib compression for TLS.
4031 *) Changes to Kerberos SSL for RFC 2712 compliance:
4032 1. Implemented real KerberosWrapper, instead of just using
4033 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4034 2. Implemented optional authenticator field of KerberosWrapper.
4036 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4037 and authenticator structs; see crypto/krb5/.
4039 Generalized Kerberos calls to support multiple Kerberos libraries.
4040 [Vern Staats <staatsvr@asc.hpc.mil>,
4041 Jeffrey Altman <jaltman@columbia.edu>
4042 via Richard Levitte]
4044 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4045 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4046 values for each of the key sizes rather than having just
4047 parameters (and 'speed' generating keys each time).
4050 *) Speed up EVP routines.
4053 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4054 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4055 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4056 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4058 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4059 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4060 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4063 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4065 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4068 *) Added the OS2-EMX target.
4069 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4071 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4072 to support NCONF routines in extension code. New function CONF_set_nconf()
4073 to allow functions which take an NCONF to also handle the old LHASH
4074 structure: this means that the old CONF compatible routines can be
4075 retained (in particular wrt extensions) without having to duplicate the
4076 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4079 *) Enhance the general user interface with mechanisms for inner control
4080 and with possibilities to have yes/no kind of prompts.
4083 *) Change all calls to low level digest routines in the library and
4084 applications to use EVP. Add missing calls to HMAC_cleanup() and
4085 don't assume HMAC_CTX can be copied using memcpy().
4086 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4088 *) Add the possibility to control engines through control names but with
4089 arbitrary arguments instead of just a string.
4090 Change the key loaders to take a UI_METHOD instead of a callback
4091 function pointer. NOTE: this breaks binary compatibility with earlier
4092 versions of OpenSSL [engine].
4093 Adapt the nCipher code for these new conditions and add a card insertion
4097 *) Enhance the general user interface with mechanisms to better support
4098 dialog box interfaces, application-defined prompts, the possibility
4099 to use defaults (for example default passwords from somewhere else)
4100 and interrupts/cancellations.
4103 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4104 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4107 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4108 tidy up some unnecessarily weird code in 'sk_new()').
4109 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4111 *) Change the key loading routines for ENGINEs to use the same kind
4112 callback (pem_password_cb) as all other routines that need this
4116 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4117 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4118 than this minimum value is recommended.
4121 *) New random seeder for OpenVMS, using the system process statistics
4122 that are easily reachable.
4125 *) Windows apparently can't transparently handle global
4126 variables defined in DLLs. Initialisations such as:
4128 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4130 wont compile. This is used by the any applications that need to
4131 declare their own ASN1 modules. This was fixed by adding the option
4132 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4133 needed for static libraries under Win32.
4136 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4137 setting of purpose and trust fields. New X509_STORE trust and
4138 purpose functions and tidy up setting in other SSL functions.
4141 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4142 structure. These are inherited by X509_STORE_CTX when it is
4143 initialised. This allows various defaults to be set in the
4144 X509_STORE structure (such as flags for CRL checking and custom
4145 purpose or trust settings) for functions which only use X509_STORE_CTX
4146 internally such as S/MIME.
4148 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4149 trust settings if they are not set in X509_STORE. This allows X509_STORE
4150 purposes and trust (in S/MIME for example) to override any set by default.
4152 Add command line options for CRL checking to smime, s_client and s_server
4156 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4157 are set then the CRL is looked up in the X509_STORE structure and
4158 its validity and signature checked, then if the certificate is found
4159 in the CRL the verify fails with a revoked error.
4161 Various new CRL related callbacks added to X509_STORE_CTX structure.
4163 Command line options added to 'verify' application to support this.
4165 This needs some additional work, such as being able to handle multiple
4166 CRLs with different times, extension based lookup (rather than just
4167 by subject name) and ultimately more complete V2 CRL extension
4171 *) Add a general user interface API (crypto/ui/). This is designed
4172 to replace things like des_read_password and friends (backward
4173 compatibility functions using this new API are provided).
4174 The purpose is to remove prompting functions from the DES code
4175 section as well as provide for prompting through dialog boxes in
4176 a window system and the like.
4179 *) Add "ex_data" support to ENGINE so implementations can add state at a
4180 per-structure level rather than having to store it globally.
4183 *) Make it possible for ENGINE structures to be copied when retrieved by
4184 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4185 This causes the "original" ENGINE structure to act like a template,
4186 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4187 operational state can be localised to each ENGINE structure, despite the
4188 fact they all share the same "methods". New ENGINE structures returned in
4189 this case have no functional references and the return value is the single
4190 structural reference. This matches the single structural reference returned
4191 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4195 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4196 needs to match any other type at all we need to manually clear the
4200 *) Changes to the "openssl engine" utility to include;
4201 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4202 about an ENGINE's available control commands.
4203 - executing control commands from command line arguments using the
4204 '-pre' and '-post' switches. '-post' is only used if '-t' is
4205 specified and the ENGINE is successfully initialised. The syntax for
4206 the individual commands are colon-separated, for example;
4207 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4210 *) New dynamic control command support for ENGINEs. ENGINEs can now
4211 declare their own commands (numbers), names (strings), descriptions,
4212 and input types for run-time discovery by calling applications. A
4213 subset of these commands are implicitly classed as "executable"
4214 depending on their input type, and only these can be invoked through
4215 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4216 can be based on user input, config files, etc). The distinction is
4217 that "executable" commands cannot return anything other than a boolean
4218 result and can only support numeric or string input, whereas some
4219 discoverable commands may only be for direct use through
4220 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4221 pointers, or other custom uses. The "executable" commands are to
4222 support parameterisations of ENGINE behaviour that can be
4223 unambiguously defined by ENGINEs and used consistently across any
4224 OpenSSL-based application. Commands have been added to all the
4225 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4226 control over shared-library paths without source code alterations.
4229 *) Changed all ENGINE implementations to dynamically allocate their
4230 ENGINEs rather than declaring them statically. Apart from this being
4231 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4232 this also allows the implementations to compile without using the
4233 internal engine_int.h header.
4236 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4237 'const' value. Any code that should be able to modify a RAND_METHOD
4238 should already have non-const pointers to it (ie. they should only
4239 modify their own ones).
4242 *) Made a variety of little tweaks to the ENGINE code.
4243 - "atalla" and "ubsec" string definitions were moved from header files
4244 to C code. "nuron" string definitions were placed in variables
4245 rather than hard-coded - allowing parameterisation of these values
4246 later on via ctrl() commands.
4247 - Removed unused "#if 0"'d code.
4248 - Fixed engine list iteration code so it uses ENGINE_free() to release
4249 structural references.
4250 - Constified the RAND_METHOD element of ENGINE structures.
4251 - Constified various get/set functions as appropriate and added
4252 missing functions (including a catch-all ENGINE_cpy that duplicates
4253 all ENGINE values onto a new ENGINE except reference counts/state).
4254 - Removed NULL parameter checks in get/set functions. Setting a method
4255 or function to NULL is a way of cancelling out a previously set
4256 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4257 and doesn't justify the extra error symbols and code.
4258 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4259 flags from engine_int.h to engine.h.
4260 - Changed prototypes for ENGINE handler functions (init(), finish(),
4261 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4264 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4265 to the algorithm using long division. The binary algorithm can be
4266 used only if the modulus is odd. On 32-bit systems, it is faster
4267 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4268 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4269 up to 450 bits. In 64-bit environments, the binary algorithm
4270 appears to be advantageous for much longer moduli; here we use it
4271 for moduli up to 2048 bits.
4274 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4275 could not support the combine flag in choice fields.
4278 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4279 extensions from a certificate request to the certificate.
4282 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4283 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4284 file: this allows the display of the certificate about to be
4285 signed to be customised, to allow certain fields to be included
4286 or excluded and extension details. The old system didn't display
4287 multicharacter strings properly, omitted fields not in the policy
4288 and couldn't display additional details such as extensions.
4291 *) Function EC_POINTs_mul for multiple scalar multiplication
4292 of an arbitrary number of elliptic curve points
4293 \sum scalars[i]*points[i],
4294 optionally including the generator defined for the EC_GROUP:
4295 scalar*generator + \sum scalars[i]*points[i].
4297 EC_POINT_mul is a simple wrapper function for the typical case
4298 that the point list has just one item (besides the optional
4302 *) First EC_METHODs for curves over GF(p):
4304 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4305 operations and provides various method functions that can also
4306 operate with faster implementations of modular arithmetic.
4308 EC_GFp_mont_method() reuses most functions that are part of
4309 EC_GFp_simple_method, but uses Montgomery arithmetic.
4311 [Bodo Moeller; point addition and point doubling
4312 implementation directly derived from source code provided by
4313 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4315 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4316 crypto/ec/ec_lib.c):
4318 Curves are EC_GROUP objects (with an optional group generator)
4319 based on EC_METHODs that are built into the library.
4321 Points are EC_POINT objects based on EC_GROUP objects.
4323 Most of the framework would be able to handle curves over arbitrary
4324 finite fields, but as there are no obvious types for fields other
4325 than GF(p), some functions are limited to that for now.
4328 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4329 that the file contains a complete HTTP response.
4332 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4333 change the def and num file printf format specifier from "%-40sXXX"
4334 to "%-39s XXX". The latter will always guarantee a space after the
4335 field while the former will cause them to run together if the field
4336 is 40 of more characters long.
4339 *) Constify the cipher and digest 'method' functions and structures
4340 and modify related functions to take constant EVP_MD and EVP_CIPHER
4344 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4345 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4348 *) Modify EVP_Digest*() routines so they now return values. Although the
4349 internal software routines can never fail additional hardware versions
4353 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4355 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4356 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4359 ERR_R_NESTED_ASN1_ERROR
4361 ERR_R_MISSING_ASN1_EOS
4362 were 4 .. 9, conflicting with
4363 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4365 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4366 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4368 Add new error code 'ERR_R_INTERNAL_ERROR'.
4371 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4375 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4376 sets the subject name for a new request or supersedes the
4377 subject name in a given request. Formats that can be parsed are
4378 'CN=Some Name, OU=myOU, C=IT'
4380 'CN=Some Name/OU=myOU/C=IT'.
4382 Add options '-batch' and '-verbose' to 'openssl req'.
4383 [Massimiliano Pala <madwolf@hackmasters.net>]
4385 *) Introduce the possibility to access global variables through
4386 functions on platform were that's the best way to handle exporting
4387 global variables in shared libraries. To enable this functionality,
4388 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4389 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4390 is normally done by Configure or something similar).
4392 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4393 in the source file (foo.c) like this:
4395 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4396 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4398 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4399 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4401 OPENSSL_DECLARE_GLOBAL(int,foo);
4402 #define foo OPENSSL_GLOBAL_REF(foo)
4403 OPENSSL_DECLARE_GLOBAL(double,bar);
4404 #define bar OPENSSL_GLOBAL_REF(bar)
4406 The #defines are very important, and therefore so is including the
4407 header file everywhere where the defined globals are used.
4409 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4410 of ASN.1 items, but that structure is a bit different.
4412 The largest change is in util/mkdef.pl which has been enhanced with
4413 better and easier to understand logic to choose which symbols should
4414 go into the Windows .def files as well as a number of fixes and code
4415 cleanup (among others, algorithm keywords are now sorted
4416 lexicographically to avoid constant rewrites).
4419 *) In BN_div() keep a copy of the sign of 'num' before writing the
4420 result to 'rm' because if rm==num the value will be overwritten
4421 and produce the wrong result if 'num' is negative: this caused
4422 problems with BN_mod() and BN_nnmod().
4425 *) Function OCSP_request_verify(). This checks the signature on an
4426 OCSP request and verifies the signer certificate. The signer
4427 certificate is just checked for a generic purpose and OCSP request
4431 *) Add OCSP_check_validity() function to check the validity of OCSP
4432 responses. OCSP responses are prepared in real time and may only
4433 be a few seconds old. Simply checking that the current time lies
4434 between thisUpdate and nextUpdate max reject otherwise valid responses
4435 caused by either OCSP responder or client clock inaccuracy. Instead
4436 we allow thisUpdate and nextUpdate to fall within a certain period of
4437 the current time. The age of the response can also optionally be
4438 checked. Two new options -validity_period and -status_age added to
4442 *) If signature or public key algorithm is unrecognized print out its
4443 OID rather that just UNKNOWN.
4446 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4447 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4448 ID to be generated from the issuer certificate alone which can then be
4449 passed to OCSP_id_issuer_cmp().
4452 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4453 ASN1 modules to export functions returning ASN1_ITEM pointers
4454 instead of the ASN1_ITEM structures themselves. This adds several
4455 new macros which allow the underlying ASN1 function/structure to
4456 be accessed transparently. As a result code should not use ASN1_ITEM
4457 references directly (such as &X509_it) but instead use the relevant
4458 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4459 use of the new ASN1 code on platforms where exporting structures
4460 is problematical (for example in shared libraries) but exporting
4461 functions returning pointers to structures is not.
4464 *) Add support for overriding the generation of SSL/TLS session IDs.
4465 These callbacks can be registered either in an SSL_CTX or per SSL.
4466 The purpose of this is to allow applications to control, if they wish,
4467 the arbitrary values chosen for use as session IDs, particularly as it
4468 can be useful for session caching in multiple-server environments. A
4469 command-line switch for testing this (and any client code that wishes
4470 to use such a feature) has been added to "s_server".
4471 [Geoff Thorpe, Lutz Jaenicke]
4473 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4474 of the form '#if defined(...) || defined(...) || ...' and
4475 '#if !defined(...) && !defined(...) && ...'. This also avoids
4476 the growing number of special cases it was previously handling.
4479 *) Make all configuration macros available for application by making
4480 sure they are available in opensslconf.h, by giving them names starting
4481 with "OPENSSL_" to avoid conflicts with other packages and by making
4482 sure e_os2.h will cover all platform-specific cases together with
4484 Additionally, it is now possible to define configuration/platform-
4485 specific names (called "system identities"). In the C code, these
4486 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4487 macro with the name beginning with "OPENSSL_SYS_", which is determined
4488 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
4492 *) New option -set_serial to 'req' and 'x509' this allows the serial
4493 number to use to be specified on the command line. Previously self
4494 signed certificates were hard coded with serial number 0 and the
4495 CA options of 'x509' had to use a serial number in a file which was
4499 *) New options to 'ca' utility to support V2 CRL entry extensions.
4500 Currently CRL reason, invalidity date and hold instruction are
4501 supported. Add new CRL extensions to V3 code and some new objects.
4504 *) New function EVP_CIPHER_CTX_set_padding() this is used to
4505 disable standard block padding (aka PKCS#5 padding) in the EVP
4506 API, which was previously mandatory. This means that the data is
4507 not padded in any way and so the total length much be a multiple
4508 of the block size, otherwise an error occurs.
4511 *) Initial (incomplete) OCSP SSL support.
4514 *) New function OCSP_parse_url(). This splits up a URL into its host,
4515 port and path components: primarily to parse OCSP URLs. New -url
4516 option to ocsp utility.
4519 *) New nonce behavior. The return value of OCSP_check_nonce() now
4520 reflects the various checks performed. Applications can decide
4521 whether to tolerate certain situations such as an absent nonce
4522 in a response when one was present in a request: the ocsp application
4523 just prints out a warning. New function OCSP_add1_basic_nonce()
4524 this is to allow responders to include a nonce in a response even if
4525 the request is nonce-less.
4528 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
4529 skipped when using openssl x509 multiple times on a single input file,
4530 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
4533 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
4534 set string type: to handle setting ASN1_TIME structures. Fix ca
4535 utility to correctly initialize revocation date of CRLs.
4538 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
4539 the clients preferred ciphersuites and rather use its own preferences.
4540 Should help to work around M$ SGC (Server Gated Cryptography) bug in
4541 Internet Explorer by ensuring unchanged hash method during stepup.
4542 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
4545 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
4546 to aes and add a new 'exist' option to print out symbols that don't
4550 *) Additional options to ocsp utility to allow flags to be set and
4551 additional certificates supplied.
4554 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
4555 OCSP client a number of certificate to only verify the response
4559 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
4560 handle the new API. Currently only ECB, CBC modes supported. Add new
4563 Add TLS AES ciphersuites as described in RFC3268, "Advanced
4564 Encryption Standard (AES) Ciphersuites for Transport Layer
4565 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
4566 not enabled by default and were not part of the "ALL" ciphersuite
4567 alias because they were not yet official; they could be
4568 explicitly requested by specifying the "AESdraft" ciphersuite
4569 group alias. In the final release of OpenSSL 0.9.7, the group
4570 alias is called "AES" and is part of "ALL".)
4571 [Ben Laurie, Steve Henson, Bodo Moeller]
4573 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
4574 request to response.
4577 *) Functions for OCSP responders. OCSP_request_onereq_count(),
4578 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
4579 extract information from a certificate request. OCSP_response_create()
4580 creates a response and optionally adds a basic response structure.
4581 OCSP_basic_add1_status() adds a complete single response to a basic
4582 response and returns the OCSP_SINGLERESP structure just added (to allow
4583 extensions to be included for example). OCSP_basic_add1_cert() adds a
4584 certificate to a basic response and OCSP_basic_sign() signs a basic
4585 response with various flags. New helper functions ASN1_TIME_check()
4586 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
4587 (converts ASN1_TIME to GeneralizedTime).
4590 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
4591 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
4592 structure from a certificate. X509_pubkey_digest() digests the public_key
4593 contents: this is used in various key identifiers.
4596 *) Make sk_sort() tolerate a NULL argument.
4597 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
4599 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
4600 passed by the function are trusted implicitly. If any of them signed the
4601 response then it is assumed to be valid and is not verified.
4604 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
4605 to data. This was previously part of the PKCS7 ASN1 code. This
4606 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
4607 [Steve Henson, reported by Kenneth R. Robinette
4608 <support@securenetterm.com>]
4610 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
4611 routines: without these tracing memory leaks is very painful.
4612 Fix leaks in PKCS12 and PKCS7 routines.
4615 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
4616 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
4617 effectively meant GeneralizedTime would never be used. Now it
4618 is initialised to -1 but X509_time_adj() now has to check the value
4619 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
4620 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
4621 [Steve Henson, reported by Kenneth R. Robinette
4622 <support@securenetterm.com>]
4624 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
4625 result in a zero length in the ASN1_INTEGER structure which was
4626 not consistent with the structure when d2i_ASN1_INTEGER() was used
4627 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
4628 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
4629 where it did not print out a minus for negative ASN1_INTEGER.
4632 *) Add summary printout to ocsp utility. The various functions which
4633 convert status values to strings have been renamed to:
4634 OCSP_response_status_str(), OCSP_cert_status_str() and
4635 OCSP_crl_reason_str() and are no longer static. New options
4636 to verify nonce values and to disable verification. OCSP response
4637 printout format cleaned up.
4640 *) Add additional OCSP certificate checks. These are those specified
4641 in RFC2560. This consists of two separate checks: the CA of the
4642 certificate being checked must either be the OCSP signer certificate
4643 or the issuer of the OCSP signer certificate. In the latter case the
4644 OCSP signer certificate must contain the OCSP signing extended key
4645 usage. This check is performed by attempting to match the OCSP
4646 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
4647 in the OCSP_CERTID structures of the response.
4650 *) Initial OCSP certificate verification added to OCSP_basic_verify()
4651 and related routines. This uses the standard OpenSSL certificate
4652 verify routines to perform initial checks (just CA validity) and
4653 to obtain the certificate chain. Then additional checks will be
4654 performed on the chain. Currently the root CA is checked to see
4655 if it is explicitly trusted for OCSP signing. This is used to set
4656 a root CA as a global signing root: that is any certificate that
4657 chains to that CA is an acceptable OCSP signing certificate.
4660 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
4661 extensions from a separate configuration file.
4662 As when reading extensions from the main configuration file,
4663 the '-extensions ...' option may be used for specifying the
4665 [Massimiliano Pala <madwolf@comune.modena.it>]
4667 *) New OCSP utility. Allows OCSP requests to be generated or
4668 read. The request can be sent to a responder and the output
4669 parsed, outputed or printed in text form. Not complete yet:
4670 still needs to check the OCSP response validity.
4673 *) New subcommands for 'openssl ca':
4674 'openssl ca -status <serial>' prints the status of the cert with
4675 the given serial number (according to the index file).
4676 'openssl ca -updatedb' updates the expiry status of certificates
4678 [Massimiliano Pala <madwolf@comune.modena.it>]
4680 *) New '-newreq-nodes' command option to CA.pl. This is like
4681 '-newreq', but calls 'openssl req' with the '-nodes' option
4682 so that the resulting key is not encrypted.
4683 [Damien Miller <djm@mindrot.org>]
4685 *) New configuration for the GNU Hurd.
4686 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
4688 *) Initial code to implement OCSP basic response verify. This
4689 is currently incomplete. Currently just finds the signer's
4690 certificate and verifies the signature on the response.
4693 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4694 value of OPENSSLDIR. This is available via the new '-d' option
4695 to 'openssl version', and is also included in 'openssl version -a'.
4698 *) Allowing defining memory allocation callbacks that will be given
4699 file name and line number information in additional arguments
4700 (a const char* and an int). The basic functionality remains, as
4701 well as the original possibility to just replace malloc(),
4702 realloc() and free() by functions that do not know about these
4703 additional arguments. To register and find out the current
4704 settings for extended allocation functions, the following
4705 functions are provided:
4707 CRYPTO_set_mem_ex_functions
4708 CRYPTO_set_locked_mem_ex_functions
4709 CRYPTO_get_mem_ex_functions
4710 CRYPTO_get_locked_mem_ex_functions
4712 These work the same way as CRYPTO_set_mem_functions and friends.
4713 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4714 extended allocation function is enabled.
4715 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4716 a conventional allocation function is enabled.
4717 [Richard Levitte, Bodo Moeller]
4719 *) Finish off removing the remaining LHASH function pointer casts.
4720 There should no longer be any prototype-casting required when using
4721 the LHASH abstraction, and any casts that remain are "bugs". See
4722 the callback types and macros at the head of lhash.h for details
4723 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4726 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4727 If /dev/[u]random devices are not available or do not return enough
4728 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4730 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4731 /etc/entropy will be queried once each in this sequence, quering stops
4732 when enough entropy was collected without querying more sockets.
4735 *) Change the Unix RAND_poll() variant to be able to poll several
4736 random devices, as specified by DEVRANDOM, until a sufficient amount
4737 of data has been collected. We spend at most 10 ms on each file
4738 (select timeout) and read in non-blocking mode. DEVRANDOM now
4739 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4740 (previously it was just the string "/dev/urandom"), so on typical
4741 platforms the 10 ms delay will never occur.
4742 Also separate out the Unix variant to its own file, rand_unix.c.
4743 For VMS, there's a currently-empty rand_vms.c.
4746 *) Move OCSP client related routines to ocsp_cl.c. These
4747 provide utility functions which an application needing
4748 to issue a request to an OCSP responder and analyse the
4749 response will typically need: as opposed to those which an
4750 OCSP responder itself would need which will be added later.
4752 OCSP_request_sign() signs an OCSP request with an API similar
4753 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4754 response. OCSP_response_get1_basic() extracts basic response
4755 from response. OCSP_resp_find_status(): finds and extracts status
4756 information from an OCSP_CERTID structure (which will be created
4757 when the request structure is built). These are built from lower
4758 level functions which work on OCSP_SINGLERESP structures but
4759 wont normally be used unless the application wishes to examine
4760 extensions in the OCSP response for example.
4762 Replace nonce routines with a pair of functions.
4763 OCSP_request_add1_nonce() adds a nonce value and optionally
4764 generates a random value. OCSP_check_nonce() checks the
4765 validity of the nonce in an OCSP response.
4768 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4769 This doesn't copy the supplied OCSP_CERTID and avoids the
4770 need to free up the newly created id. Change return type
4771 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4772 This can then be used to add extensions to the request.
4773 Deleted OCSP_request_new(), since most of its functionality
4774 is now in OCSP_REQUEST_new() (and the case insensitive name
4775 clash) apart from the ability to set the request name which
4776 will be added elsewhere.
4779 *) Update OCSP API. Remove obsolete extensions argument from
4780 various functions. Extensions are now handled using the new
4781 OCSP extension code. New simple OCSP HTTP function which
4782 can be used to send requests and parse the response.
4785 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4786 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4787 uses the special reorder version of SET OF to sort the attributes
4788 and reorder them to match the encoded order. This resolves a long
4789 standing problem: a verify on a PKCS7 structure just after signing
4790 it used to fail because the attribute order did not match the
4791 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4792 it uses the received order. This is necessary to tolerate some broken
4793 software that does not order SET OF. This is handled by encoding
4794 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4795 to produce the required SET OF.
4798 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4799 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4800 files to get correct declarations of the ASN.1 item variables.
4803 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4804 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4805 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4806 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4807 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4808 ASN1_ITEM and no wrapper functions.
4811 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4812 replace the old function pointer based I/O routines. Change most of
4813 the *_d2i_bio() and *_d2i_fp() functions to use these.
4816 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4817 lines, recognice more "algorithms" that can be deselected, and make
4818 it complain about algorithm deselection that isn't recognised.
4821 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4822 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4823 to use new functions. Add NO_ASN1_OLD which can be set to remove
4824 some old style ASN1 functions: this can be used to determine if old
4825 code will still work when these eventually go away.
4828 *) New extension functions for OCSP structures, these follow the
4829 same conventions as certificates and CRLs.
4832 *) New function X509V3_add1_i2d(). This automatically encodes and
4833 adds an extension. Its behaviour can be customised with various
4834 flags to append, replace or delete. Various wrappers added for
4835 certifcates and CRLs.
4838 *) Fix to avoid calling the underlying ASN1 print routine when
4839 an extension cannot be parsed. Correct a typo in the
4840 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4843 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4844 entries for variables.
4847 *) Add functionality to apps/openssl.c for detecting locking
4848 problems: As the program is single-threaded, all we have
4849 to do is register a locking callback using an array for
4850 storing which locks are currently held by the program.
4853 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4854 SSL_get_ex_data_X509_STORE_idx(), which is used in
4855 ssl_verify_cert_chain() and thus can be called at any time
4856 during TLS/SSL handshakes so that thread-safety is essential.
4857 Unfortunately, the ex_data design is not at all suited
4858 for multi-threaded use, so it probably should be abolished.
4861 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4862 [Broadcom, tweaked and integrated by Geoff Thorpe]
4864 *) Move common extension printing code to new function
4865 X509V3_print_extensions(). Reorganise OCSP print routines and
4866 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4869 *) New function X509_signature_print() to remove duplication in some
4873 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4874 set (this was treated exactly the same as SET OF previously). This
4875 is used to reorder the STACK representing the structure to match the
4876 encoding. This will be used to get round a problem where a PKCS7
4877 structure which was signed could not be verified because the STACK
4878 order did not reflect the encoded order.
4881 *) Reimplement the OCSP ASN1 module using the new code.
4884 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4885 for its ASN1 operations. The old style function pointers still exist
4886 for now but they will eventually go away.
4889 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4890 completely replaces the old ASN1 functionality with a table driven
4891 encoder and decoder which interprets an ASN1_ITEM structure describing
4892 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4893 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4894 has also been converted to the new form.
4897 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4898 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4899 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4900 for negative moduli.
4903 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4904 of not touching the result's sign bit.
4907 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4911 *) Changed the LHASH code to use prototypes for callbacks, and created
4912 macros to declare and implement thin (optionally static) functions
4913 that provide type-safety and avoid function pointer casting for the
4914 type-specific callbacks.
4917 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4919 [Veers Staats <staatsvr@asc.hpc.mil>,
4920 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4922 *) Reformat the FAQ so the different questions and answers can be divided
4923 in sections depending on the subject.
4926 *) Have the zlib compression code load ZLIB.DLL dynamically under
4930 *) New function BN_mod_sqrt for computing square roots modulo a prime
4931 (using the probabilistic Tonelli-Shanks algorithm unless
4932 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4933 be handled deterministically).
4934 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4936 *) Make BN_mod_inverse faster by explicitly handling small quotients
4937 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4938 512 bits], about 30% for larger ones [1024 or 2048 bits].)
4941 *) New function BN_kronecker.
4944 *) Fix BN_gcd so that it works on negative inputs; the result is
4945 positive unless both parameters are zero.
4946 Previously something reasonably close to an infinite loop was
4947 possible because numbers could be growing instead of shrinking
4948 in the implementation of Euclid's algorithm.
4951 *) Fix BN_is_word() and BN_is_one() macros to take into account the
4952 sign of the number in question.
4954 Fix BN_is_word(a,w) to work correctly for w == 0.
4956 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
4957 because its test if the absolute value of 'a' equals 'w'.
4958 Note that BN_abs_is_word does *not* handle w == 0 reliably;
4959 it exists mostly for use in the implementations of BN_is_zero(),
4960 BN_is_one(), and BN_is_word().
4963 *) New function BN_swap.
4966 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
4967 the exponentiation functions are more likely to produce reasonable
4968 results on negative inputs.
4971 *) Change BN_mod_mul so that the result is always non-negative.
4972 Previously, it could be negative if one of the factors was negative;
4973 I don't think anyone really wanted that behaviour.
4976 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
4977 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
4978 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
4979 and add new functions:
4988 BN_mod_lshift1_quick
4992 These functions always generate non-negative results.
4994 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
4995 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
4997 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
4998 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
4999 be reduced modulo m.
5000 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5003 The following entry accidentily appeared in the CHANGES file
5004 distributed with OpenSSL 0.9.7. The modifications described in
5005 it do *not* apply to OpenSSL 0.9.7.
5007 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5008 was actually never needed) and in BN_mul(). The removal in BN_mul()
5009 required a small change in bn_mul_part_recursive() and the addition
5010 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5011 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5012 bn_sub_words() and bn_add_words() except they take arrays with
5017 *) In 'openssl passwd', verify passwords read from the terminal
5018 unless the '-salt' option is used (which usually means that
5019 verification would just waste user's time since the resulting
5020 hash is going to be compared with some given password hash)
5021 or the new '-noverify' option is used.
5023 This is an incompatible change, but it does not affect
5024 non-interactive use of 'openssl passwd' (passwords on the command
5025 line, '-stdin' option, '-in ...' option) and thus should not
5029 *) Remove all references to RSAref, since there's no more need for it.
5032 *) Make DSO load along a path given through an environment variable
5033 (SHLIB_PATH) with shl_load().
5036 *) Constify the ENGINE code as a result of BIGNUM constification.
5037 Also constify the RSA code and most things related to it. In a
5038 few places, most notable in the depth of the ASN.1 code, ugly
5039 casts back to non-const were required (to be solved at a later
5043 *) Make it so the openssl application has all engines loaded by default.
5046 *) Constify the BIGNUM routines a little more.
5049 *) Add the following functions:
5051 ENGINE_load_cswift()
5053 ENGINE_load_atalla()
5055 ENGINE_load_builtin_engines()
5057 That way, an application can itself choose if external engines that
5058 are built-in in OpenSSL shall ever be used or not. The benefit is
5059 that applications won't have to be linked with libdl or other dso
5060 libraries unless it's really needed.
5062 Changed 'openssl engine' to load all engines on demand.
5063 Changed the engine header files to avoid the duplication of some
5064 declarations (they differed!).
5067 *) 'openssl engine' can now list capabilities.
5070 *) Better error reporting in 'openssl engine'.
5073 *) Never call load_dh_param(NULL) in s_server.
5076 *) Add engine application. It can currently list engines by name and
5077 identity, and test if they are actually available.
5080 *) Improve RPM specification file by forcing symbolic linking and making
5081 sure the installed documentation is also owned by root.root.
5082 [Damien Miller <djm@mindrot.org>]
5084 *) Give the OpenSSL applications more possibilities to make use of
5085 keys (public as well as private) handled by engines.
5088 *) Add OCSP code that comes from CertCo.
5091 *) Add VMS support for the Rijndael code.
5094 *) Added untested support for Nuron crypto accelerator.
5097 *) Add support for external cryptographic devices. This code was
5098 previously distributed separately as the "engine" branch.
5099 [Geoff Thorpe, Richard Levitte]
5101 *) Rework the filename-translation in the DSO code. It is now possible to
5102 have far greater control over how a "name" is turned into a filename
5103 depending on the operating environment and any oddities about the
5104 different shared library filenames on each system.
5107 *) Support threads on FreeBSD-elf in Configure.
5110 *) Fix for SHA1 assembly problem with MASM: it produces
5111 warnings about corrupt line number information when assembling
5112 with debugging information. This is caused by the overlapping
5114 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5117 NCONF_get_number() has no error checking at all. As a replacement,
5118 NCONF_get_number_e() is defined (_e for "error checking") and is
5119 promoted strongly. The old NCONF_get_number is kept around for
5120 binary backward compatibility.
5121 Make it possible for methods to load from something other than a BIO,
5122 by providing a function pointer that is given a name instead of a BIO.
5123 For example, this could be used to load configuration data from an
5127 *) Fix for non blocking accept BIOs. Added new I/O special reason
5128 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5129 with non blocking I/O was not possible because no retry code was
5130 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5134 *) Added the beginnings of Rijndael support.
5137 *) Fix for bug in DirectoryString mask setting. Add support for
5138 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5139 to allow certificate printing to more controllable, additional
5140 'certopt' option to 'x509' to allow new printing options to be
5144 *) Clean old EAY MD5 hack from e_os.h.
5147 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5149 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5150 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5151 [Joe Orton, Steve Henson]
5153 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5155 *) Fix additional bug revealed by the NISCC test suite:
5157 Stop bug triggering large recursion when presented with
5158 certain ASN.1 tags (CVE-2003-0851)
5161 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5163 *) Fix various bugs revealed by running the NISCC test suite:
5165 Stop out of bounds reads in the ASN1 code when presented with
5166 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5168 If verify callback ignores invalid public key errors don't try to check
5169 certificate signature with the NULL public key.
5173 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5174 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5178 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5179 extra data after the compression methods not only for TLS 1.0
5180 but also for SSL 3.0 (as required by the specification).
5181 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5183 *) Change X509_certificate_type() to mark the key as exported/exportable
5184 when it's 512 *bits* long, not 512 bytes.
5187 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5189 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5190 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5191 a protocol version number mismatch like a decryption error
5192 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5195 *) Turn on RSA blinding by default in the default implementation
5196 to avoid a timing attack. Applications that don't want it can call
5197 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5198 They would be ill-advised to do so in most cases.
5199 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5201 *) Change RSA blinding code so that it works when the PRNG is not
5202 seeded (in this case, the secret RSA exponent is abused as
5203 an unpredictable seed -- if it is not unpredictable, there
5204 is no point in blinding anyway). Make RSA blinding thread-safe
5205 by remembering the creator's thread ID in rsa->blinding and
5206 having all other threads use local one-time blinding factors
5207 (this requires more computation than sharing rsa->blinding, but
5208 avoids excessive locking; and if an RSA object is not shared
5209 between threads, blinding will still be very fast).
5212 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5214 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5215 via timing by performing a MAC computation even if incorrrect
5216 block cipher padding has been found. This is a countermeasure
5217 against active attacks where the attacker has to distinguish
5218 between bad padding and a MAC verification error. (CVE-2003-0078)
5220 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5221 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5222 Martin Vuagnoux (EPFL, Ilion)]
5224 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5226 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5227 memory from it's contents. This is done with a counter that will
5228 place alternating values in each byte. This can be used to solve
5229 two issues: 1) the removal of calls to memset() by highly optimizing
5230 compilers, and 2) cleansing with other values than 0, since those can
5231 be read through on certain media, for example a swap space on disk.
5234 *) Bugfix: client side session caching did not work with external caching,
5235 because the session->cipher setting was not restored when reloading
5236 from the external cache. This problem was masked, when
5237 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5238 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5241 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5242 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5243 [Zeev Lieber <zeev-l@yahoo.com>]
5245 *) Undo an undocumented change introduced in 0.9.6e which caused
5246 repeated calls to OpenSSL_add_all_ciphers() and
5247 OpenSSL_add_all_digests() to be ignored, even after calling
5251 *) Change the default configuration reader to deal with last line not
5252 being properly terminated.
5255 *) Change X509_NAME_cmp() so it applies the special rules on handling
5256 DN values that are of type PrintableString, as well as RDNs of type
5257 emailAddress where the value has the type ia5String.
5258 [stefank@valicert.com via Richard Levitte]
5260 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5261 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5262 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5263 the bitwise-OR of the two for use by the majority of applications
5264 wanting this behaviour, and update the docs. The documented
5265 behaviour and actual behaviour were inconsistent and had been
5266 changing anyway, so this is more a bug-fix than a behavioural
5268 [Geoff Thorpe, diagnosed by Nadav Har'El]
5270 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5271 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5274 *) Fix initialization code race conditions in
5275 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5276 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5277 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5278 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5279 ssl2_get_cipher_by_char(),
5280 ssl3_get_cipher_by_char().
5281 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5283 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5284 the cached sessions are flushed, as the remove_cb() might use ex_data
5285 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5286 (see [openssl.org #212]).
5287 [Geoff Thorpe, Lutz Jaenicke]
5289 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5290 length, instead of the encoding length to d2i_ASN1_OBJECT.
5293 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5295 *) [In 0.9.6g-engine release:]
5296 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5297 [Lynn Gazis <lgazis@rainbow.com>]
5299 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5301 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5302 and get fix the header length calculation.
5303 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5304 Alon Kantor <alonk@checkpoint.com> (and others),
5307 *) Use proper error handling instead of 'assertions' in buffer
5308 overflow checks added in 0.9.6e. This prevents DoS (the
5309 assertions could call abort()).
5310 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5312 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5314 *) Add various sanity checks to asn1_get_length() to reject
5315 the ASN1 length bytes if they exceed sizeof(long), will appear
5316 negative or the content length exceeds the length of the
5318 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5320 *) Fix cipher selection routines: ciphers without encryption had no flags
5321 for the cipher strength set and where therefore not handled correctly
5322 by the selection routines (PR #130).
5325 *) Fix EVP_dsa_sha macro.
5329 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5330 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5331 that was added in OpenSSL 0.9.6d.
5333 As the countermeasure turned out to be incompatible with some
5334 broken SSL implementations, the new option is part of SSL_OP_ALL.
5335 SSL_OP_ALL is usually employed when compatibility with weird SSL
5336 implementations is desired (e.g. '-bugs' option to 's_client' and
5337 's_server'), so the new option is automatically set in many
5341 *) Changes in security patch:
5343 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5344 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5345 Air Force Materiel Command, USAF, under agreement number
5348 *) Add various sanity checks to asn1_get_length() to reject
5349 the ASN1 length bytes if they exceed sizeof(long), will appear
5350 negative or the content length exceeds the length of the
5351 supplied buffer. (CVE-2002-0659)
5352 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5354 *) Assertions for various potential buffer overflows, not known to
5356 [Ben Laurie (CHATS)]
5358 *) Various temporary buffers to hold ASCII versions of integers were
5359 too small for 64 bit platforms. (CVE-2002-0655)
5360 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5362 *) Remote buffer overflow in SSL3 protocol - an attacker could
5363 supply an oversized session ID to a client. (CVE-2002-0656)
5364 [Ben Laurie (CHATS)]
5366 *) Remote buffer overflow in SSL2 protocol - an attacker could
5367 supply an oversized client master key. (CVE-2002-0656)
5368 [Ben Laurie (CHATS)]
5370 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5372 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5373 encoded as NULL) with id-dsa-with-sha1.
5374 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5376 *) Check various X509_...() return values in apps/req.c.
5377 [Nils Larsch <nla@trustcenter.de>]
5379 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5380 an end-of-file condition would erronously be flagged, when the CRLF
5381 was just at the end of a processed block. The bug was discovered when
5382 processing data through a buffering memory BIO handing the data to a
5383 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5384 <ptsekov@syntrex.com> and Nedelcho Stanev.
5387 *) Implement a countermeasure against a vulnerability recently found
5388 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5389 before application data chunks to avoid the use of known IVs
5390 with data potentially chosen by the attacker.
5393 *) Fix length checks in ssl3_get_client_hello().
5396 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5397 to prevent ssl3_read_internal() from incorrectly assuming that
5398 ssl3_read_bytes() found application data while handshake
5399 processing was enabled when in fact s->s3->in_read_app_data was
5400 merely automatically cleared during the initial handshake.
5401 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5403 *) Fix object definitions for Private and Enterprise: they were not
5404 recognized in their shortname (=lowercase) representation. Extend
5405 obj_dat.pl to issue an error when using undefined keywords instead
5406 of silently ignoring the problem (Svenning Sorensen
5407 <sss@sss.dnsalias.net>).
5410 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5411 generators, i.e. generators other than 2 and 5. (Previously, the
5412 code did not properly initialise the 'add' and 'rem' values to
5413 BN_generate_prime().)
5415 In the new general case, we do not insist that 'generator' is
5416 actually a primitive root: This requirement is rather pointless;
5417 a generator of the order-q subgroup is just as good, if not
5421 *) Map new X509 verification errors to alerts. Discovered and submitted by
5422 Tom Wu <tom@arcot.com>.
5425 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
5426 returning non-zero before the data has been completely received
5427 when using non-blocking I/O.
5428 [Bodo Moeller; problem pointed out by John Hughes]
5430 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
5431 [Ben Laurie, Lutz Jaenicke]
5433 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
5434 Yoram Zahavi <YoramZ@gilian.com>).
5437 *) Add information about CygWin 1.3 and on, and preserve proper
5438 configuration for the versions before that.
5439 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5441 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
5442 check whether we deal with a copy of a session and do not delete from
5443 the cache in this case. Problem reported by "Izhar Shoshani Levi"
5444 <izhar@checkpoint.com>.
5447 *) Do not store session data into the internal session cache, if it
5448 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
5449 flag is set). Proposed by Aslam <aslam@funk.com>.
5452 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
5456 *) [In 0.9.6d-engine release:]
5457 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5458 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5460 *) Add the configuration target linux-s390x.
5461 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
5463 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
5464 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
5465 variable as an indication that a ClientHello message has been
5466 received. As the flag value will be lost between multiple
5467 invocations of ssl3_accept when using non-blocking I/O, the
5468 function may not be aware that a handshake has actually taken
5469 place, thus preventing a new session from being added to the
5472 To avoid this problem, we now set s->new_session to 2 instead of
5473 using a local variable.
5474 [Lutz Jaenicke, Bodo Moeller]
5476 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
5477 if the SSL_R_LENGTH_MISMATCH error is detected.
5478 [Geoff Thorpe, Bodo Moeller]
5480 *) New 'shared_ldflag' column in Configure platform table.
5483 *) Fix EVP_CIPHER_mode macro.
5484 ["Dan S. Camper" <dan@bti.net>]
5486 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
5487 type, we must throw them away by setting rr->length to 0.
5488 [D P Chang <dpc@qualys.com>]
5490 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
5492 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
5493 <Dominikus.Scherkl@biodata.com>. (The previous implementation
5494 worked incorrectly for those cases where range = 10..._2 and
5495 3*range is two bits longer than range.)
5498 *) Only add signing time to PKCS7 structures if it is not already
5502 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
5503 OBJ_ld_ce should be OBJ_id_ce.
5504 Also some ip-pda OIDs in crypto/objects/objects.txt were
5505 incorrect (cf. RFC 3039).
5506 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
5508 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
5509 returns early because it has nothing to do.
5510 [Andy Schneider <andy.schneider@bjss.co.uk>]
5512 *) [In 0.9.6c-engine release:]
5513 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
5514 [Andy Schneider <andy.schneider@bjss.co.uk>]
5516 *) [In 0.9.6c-engine release:]
5517 Add support for Cryptographic Appliance's keyserver technology.
5518 (Use engine 'keyclient')
5519 [Cryptographic Appliances and Geoff Thorpe]
5521 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
5522 is called via tools/c89.sh because arguments have to be
5523 rearranged (all '-L' options must appear before the first object
5525 [Richard Shapiro <rshapiro@abinitio.com>]
5527 *) [In 0.9.6c-engine release:]
5528 Add support for Broadcom crypto accelerator cards, backported
5530 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
5532 *) [In 0.9.6c-engine release:]
5533 Add support for SureWare crypto accelerator cards from
5534 Baltimore Technologies. (Use engine 'sureware')
5535 [Baltimore Technologies and Mark Cox]
5537 *) [In 0.9.6c-engine release:]
5538 Add support for crypto accelerator cards from Accelerated
5539 Encryption Processing, www.aep.ie. (Use engine 'aep')
5540 [AEP Inc. and Mark Cox]
5542 *) Add a configuration entry for gcc on UnixWare.
5543 [Gary Benson <gbenson@redhat.com>]
5545 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
5546 messages are stored in a single piece (fixed-length part and
5547 variable-length part combined) and fix various bugs found on the way.
5550 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
5551 instead. BIO_gethostbyname() does not know what timeouts are
5552 appropriate, so entries would stay in cache even when they have
5554 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
5556 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
5557 faced with a pathologically small ClientHello fragment that does
5558 not contain client_version: Instead of aborting with an error,
5559 simply choose the highest available protocol version (i.e.,
5560 TLS 1.0 unless it is disabled). In practice, ClientHello
5561 messages are never sent like this, but this change gives us
5562 strictly correct behaviour at least for TLS.
5565 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
5566 never resets s->method to s->ctx->method when called from within
5567 one of the SSL handshake functions.
5568 [Bodo Moeller; problem pointed out by Niko Baric]
5570 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
5571 (sent using the client's version number) if client_version is
5572 smaller than the protocol version in use. Also change
5573 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
5574 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
5575 the client will at least see that alert.
5578 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
5582 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
5583 client receives HelloRequest while in a handshake.
5584 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
5586 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
5587 should end in 'break', not 'goto end' which circuments various
5588 cleanups done in state SSL_ST_OK. But session related stuff
5589 must be disabled for SSL_ST_OK in the case that we just sent a
5592 Also avoid some overhead by not calling ssl_init_wbio_buffer()
5593 before just sending a HelloRequest.
5594 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
5596 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
5597 reveal whether illegal block cipher padding was found or a MAC
5598 verification error occured. (Neither SSLerr() codes nor alerts
5599 are directly visible to potential attackers, but the information
5600 may leak via logfiles.)
5602 Similar changes are not required for the SSL 2.0 implementation
5603 because the number of padding bytes is sent in clear for SSL 2.0,
5604 and the extra bytes are just ignored. However ssl/s2_pkt.c
5605 failed to verify that the purported number of padding bytes is in
5609 *) Add OpenUNIX-8 support including shared libraries
5610 (Boyd Lynn Gerber <gerberb@zenez.com>).
5613 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
5614 'wristwatch attack' using huge encoding parameters (cf.
5615 James H. Manger's CRYPTO 2001 paper). Note that the
5616 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
5617 encoding parameters and hence was not vulnerable.
5620 *) BN_sqr() bug fix.
5621 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
5623 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
5624 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
5625 followed by modular reduction.
5626 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
5628 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
5629 equivalent based on BN_pseudo_rand() instead of BN_rand().
5632 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
5633 This function was broken, as the check for a new client hello message
5634 to handle SGC did not allow these large messages.
5635 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
5638 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
5641 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
5642 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
5645 *) Rework the configuration and shared library support for Tru64 Unix.
5646 The configuration part makes use of modern compiler features and
5647 still retains old compiler behavior for those that run older versions
5648 of the OS. The shared library support part includes a variant that
5649 uses the RPATH feature, and is available through the special
5650 configuration target "alpha-cc-rpath", which will never be selected
5652 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
5654 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
5655 with the same message size as in ssl3_get_certificate_request().
5656 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
5657 messages might inadvertently be reject as too long.
5658 [Petr Lampa <lampa@fee.vutbr.cz>]
5660 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
5663 *) Modified SSL library such that the verify_callback that has been set
5664 specificly for an SSL object with SSL_set_verify() is actually being
5665 used. Before the change, a verify_callback set with this function was
5666 ignored and the verify_callback() set in the SSL_CTX at the time of
5667 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
5668 to allow the necessary settings.
5671 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
5672 explicitly to NULL, as at least on Solaris 8 this seems not always to be
5673 done automatically (in contradiction to the requirements of the C
5674 standard). This made problems when used from OpenSSH.
5677 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
5678 dh->length and always used
5680 BN_rand_range(priv_key, dh->p).
5682 BN_rand_range() is not necessary for Diffie-Hellman, and this
5683 specific range makes Diffie-Hellman unnecessarily inefficient if
5684 dh->length (recommended exponent length) is much smaller than the
5685 length of dh->p. We could use BN_rand_range() if the order of
5686 the subgroup was stored in the DH structure, but we only have
5691 BN_rand(priv_key, l, ...)
5693 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5699 RSA_eay_public_encrypt
5700 RSA_eay_private_decrypt
5701 RSA_eay_private_encrypt (signing)
5702 RSA_eay_public_decrypt (signature verification)
5704 (default implementations for RSA_public_encrypt,
5705 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5706 always reject numbers >= n.
5709 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5710 to synchronize access to 'locking_thread'. This is necessary on
5711 systems where access to 'locking_thread' (an 'unsigned long'
5712 variable) is not atomic.
5715 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5716 *before* setting the 'crypto_lock_rand' flag. The previous code had
5717 a race condition if 0 is a valid thread ID.
5718 [Travis Vitek <vitek@roguewave.com>]
5720 *) Add support for shared libraries under Irix.
5721 [Albert Chin-A-Young <china@thewrittenword.com>]
5723 *) Add configuration option to build on Linux on both big-endian and
5725 [Ralf Baechle <ralf@uni-koblenz.de>]
5727 *) Add the possibility to create shared libraries on HP-UX.
5730 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5732 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5733 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5734 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5735 PRNG state recovery was possible based on the output of
5736 one PRNG request appropriately sized to gain knowledge on
5737 'md' followed by enough consecutive 1-byte PRNG requests
5738 to traverse all of 'state'.
5740 1. When updating 'md_local' (the current thread's copy of 'md')
5741 during PRNG output generation, hash all of the previous
5742 'md_local' value, not just the half used for PRNG output.
5744 2. Make the number of bytes from 'state' included into the hash
5745 independent from the number of PRNG bytes requested.
5747 The first measure alone would be sufficient to avoid
5748 Markku-Juhani's attack. (Actually it had never occurred
5749 to me that the half of 'md_local' used for chaining was the
5750 half from which PRNG output bytes were taken -- I had always
5751 assumed that the secret half would be used.) The second
5752 measure makes sure that additional data from 'state' is never
5753 mixed into 'md_local' in small portions; this heuristically
5754 further strengthens the PRNG.
5757 *) Fix crypto/bn/asm/mips3.s.
5760 *) When only the key is given to "enc", the IV is undefined. Print out
5761 an error message in this case.
5764 *) Handle special case when X509_NAME is empty in X509 printing routines.
5767 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5768 positive and less than q.
5771 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5772 used: it isn't thread safe and the add_lock_callback should handle
5774 [Paul Rose <Paul.Rose@bridge.com>]
5776 *) Verify that incoming data obeys the block size in
5777 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5781 [Ulf Möller, Bodo Möller]
5783 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5784 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5785 when fixing the server behaviour for backwards-compatible 'client
5786 hello' messages. (Note that the attack is impractical against
5787 SSL 3.0 and TLS 1.0 anyway because length and version checking
5788 means that the probability of guessing a valid ciphertext is
5789 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5792 Before 0.9.5, the countermeasure (hide the error by generating a
5793 random 'decryption result') did not work properly because
5794 ERR_clear_error() was missing, meaning that SSL_get_error() would
5795 detect the supposedly ignored error.
5797 Both problems are now fixed.
5800 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5801 (previously it was 1024).
5804 *) Fix for compatibility mode trust settings: ignore trust settings
5805 unless some valid trust or reject settings are present.
5808 *) Fix for blowfish EVP: its a variable length cipher.
5811 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5812 parameters in DSA public key structures and return an error in the
5813 DSA routines if parameters are absent.
5816 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5817 in the current directory if neither $RANDFILE nor $HOME was set.
5818 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5819 caused some confusion to Windows users who haven't defined $HOME.
5820 Thus RAND_file_name() is changed again: e_os.h can define a
5821 DEFAULT_HOME, which will be used if $HOME is not set.
5822 For Windows, we use "C:"; on other platforms, we still require
5823 environment variables.
5825 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5826 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5827 having multiple threads call RAND_poll() concurrently.
5830 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5831 combination of a flag and a thread ID variable.
5832 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5833 flag), *other* threads can enter ssleay_add_bytes without obeying
5834 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5835 that they do not hold after the first thread unsets add_do_not_lock).
5838 *) Change bctest again: '-x' expressions are not available in all
5842 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5844 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5845 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5847 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5848 the default extension for executables, if any. Also, make the perl
5849 scripts that use symlink() to test if it really exists and use "cp"
5850 if it doesn't. All this made OpenSSL compilable and installable in
5854 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5855 If SEQUENCE is length is indefinite just set c->slen to the total
5856 amount of data available.
5857 [Steve Henson, reported by shige@FreeBSD.org]
5858 [This change does not apply to 0.9.7.]
5860 *) Change bctest to avoid here-documents inside command substitution
5861 (workaround for FreeBSD /bin/sh bug).
5862 For compatibility with Ultrix, avoid shell functions (introduced
5863 in the bctest version that searches along $PATH).
5866 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5867 with des_encrypt() defined on some operating systems, like Solaris
5871 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5872 On the Importance of Eliminating Errors in Cryptographic
5873 Computations, J. Cryptology 14 (2001) 2, 101-119,
5874 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5877 *) MIPS assembler BIGNUM division bug fix.
5880 *) Disabled incorrect Alpha assembler code.
5883 *) Fix PKCS#7 decode routines so they correctly update the length
5884 after reading an EOC for the EXPLICIT tag.
5886 [This change does not apply to 0.9.7.]
5888 *) Fix bug in PKCS#12 key generation routines. This was triggered
5889 if a 3DES key was generated with a 0 initial byte. Include
5890 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5891 (but broken) behaviour.
5894 *) Enhance bctest to search for a working bc along $PATH and print
5896 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5898 *) Fix memory leaks in err.c: free err_data string if necessary;
5899 don't write to the wrong index in ERR_set_error_data.
5902 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5906 *) Replace rdtsc with _emit statements for VC++ version 5.
5907 [Jeremy Cooper <jeremy@baymoo.org>]
5909 *) Make it possible to reuse SSLv2 sessions.
5912 *) In copy_email() check for >= 0 as a return value for
5913 X509_NAME_get_index_by_NID() since 0 is a valid index.
5914 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5916 *) Avoid coredump with unsupported or invalid public keys by checking if
5917 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5918 PKCS7_verify() fails with non detached data.
5921 *) Don't use getenv in library functions when run as setuid/setgid.
5922 New function OPENSSL_issetugid().
5925 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5926 due to incorrect handling of multi-threading:
5928 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5930 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5932 3. Count how many times MemCheck_off() has been called so that
5933 nested use can be treated correctly. This also avoids
5934 inband-signalling in the previous code (which relied on the
5935 assumption that thread ID 0 is impossible).
5938 *) Add "-rand" option also to s_client and s_server.
5941 *) Fix CPU detection on Irix 6.x.
5942 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
5943 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5945 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
5948 [This change does not apply to 0.9.7.]
5950 *) Use the cached encoding of an X509_NAME structure rather than
5951 copying it. This is apparently the reason for the libsafe "errors"
5952 but the code is actually correct.
5955 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
5956 Bleichenbacher's DSA attack.
5957 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
5958 to be set and top=0 forces the highest bit to be set; top=-1 is new
5959 and leaves the highest bit random.
5960 [Ulf Moeller, Bodo Moeller]
5962 *) In the NCONF_...-based implementations for CONF_... queries
5963 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
5964 a temporary CONF structure with the data component set to NULL
5965 (which gives segmentation faults in lh_retrieve).
5966 Instead, use NULL for the CONF pointer in CONF_get_string and
5967 CONF_get_number (which may use environment variables) and directly
5968 return NULL from CONF_get_section.
5971 *) Fix potential buffer overrun for EBCDIC.
5974 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
5975 keyUsage if basicConstraints absent for a CA.
5978 *) Make SMIME_write_PKCS7() write mail header values with a format that
5979 is more generally accepted (no spaces before the semicolon), since
5980 some programs can't parse those values properly otherwise. Also make
5981 sure BIO's that break lines after each write do not create invalid
5985 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
5986 macros previously used would not encode an empty SEQUENCE OF
5987 and break the signature.
5989 [This change does not apply to 0.9.7.]
5991 *) Zero the premaster secret after deriving the master secret in
5995 *) Add some EVP_add_digest_alias registrations (as found in
5996 OpenSSL_add_all_digests()) to SSL_library_init()
5997 aka OpenSSL_add_ssl_algorithms(). This provides improved
5998 compatibility with peers using X.509 certificates
5999 with unconventional AlgorithmIdentifier OIDs.
6002 *) Fix for Irix with NO_ASM.
6003 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6005 *) ./config script fixes.
6006 [Ulf Moeller, Richard Levitte]
6008 *) Fix 'openssl passwd -1'.
6011 *) Change PKCS12_key_gen_asc() so it can cope with non null
6012 terminated strings whose length is passed in the passlen
6013 parameter, for example from PEM callbacks. This was done
6014 by adding an extra length parameter to asc2uni().
6015 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6017 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6018 call failed, free the DSA structure.
6021 *) Fix to uni2asc() to cope with zero length Unicode strings.
6022 These are present in some PKCS#12 files.
6025 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6026 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6027 when writing a 32767 byte record.
6028 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6030 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6031 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6033 (RSA objects have a reference count access to which is protected
6034 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6035 so they are meant to be shared between threads.)
6036 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6037 "Reddie, Steven" <Steven.Reddie@ca.com>]
6039 *) Fix a deadlock in CRYPTO_mem_leaks().
6042 *) Use better test patterns in bntest.
6045 *) rand_win.c fix for Borland C.
6048 *) BN_rshift bugfix for n == 0.
6051 *) Add a 'bctest' script that checks for some known 'bc' bugs
6052 so that 'make test' does not abort just because 'bc' is broken.
6055 *) Store verify_result within SSL_SESSION also for client side to
6056 avoid potential security hole. (Re-used sessions on the client side
6057 always resulted in verify_result==X509_V_OK, not using the original
6058 result of the server certificate verification.)
6061 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6062 SSL3_RT_APPLICATION_DATA, return 0.
6063 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6067 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6068 releases, have been re-implemented by renaming the previous
6069 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6070 and ssl3_read_internal, respectively, and adding 'peek' parameters
6071 to them. The new ssl[23]_{read,peek} functions are calls to
6072 ssl[23]_read_internal with the 'peek' flag set appropriately.
6073 A 'peek' parameter has also been added to ssl3_read_bytes, which
6074 does the actual work for ssl3_read_internal.
6077 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6078 the method-specific "init()" handler. Also clean up ex_data after
6079 calling the method-specific "finish()" handler. Previously, this was
6080 happening the other way round.
6083 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6084 The previous value, 12, was not always sufficient for BN_mod_exp().
6087 *) Make sure that shared libraries get the internal name engine with
6088 the full version number and not just 0. This should mark the
6089 shared libraries as not backward compatible. Of course, this should
6090 be changed again when we can guarantee backward binary compatibility.
6093 *) Fix typo in get_cert_by_subject() in by_dir.c
6094 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6096 *) Rework the system to generate shared libraries:
6098 - Make note of the expected extension for the shared libraries and
6099 if there is a need for symbolic links from for example libcrypto.so.0
6100 to libcrypto.so.0.9.7. There is extended info in Configure for
6103 - Make as few rebuilds of the shared libraries as possible.
6105 - Still avoid linking the OpenSSL programs with the shared libraries.
6107 - When installing, install the shared libraries separately from the
6111 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6113 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6114 and not in SSL_clear because the latter is also used by the
6115 accept/connect functions; previously, the settings made by
6116 SSL_set_read_ahead would be lost during the handshake.
6117 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6119 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6120 Previously, it would create entries for disableed algorithms no
6124 *) Added several new manual pages for SSL_* function.
6127 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6129 *) In ssl23_get_client_hello, generate an error message when faced
6130 with an initial SSL 3.0/TLS record that is too small to contain the
6131 first two bytes of the ClientHello message, i.e. client_version.
6132 (Note that this is a pathologic case that probably has never happened
6133 in real life.) The previous approach was to use the version number
6134 from the record header as a substitute; but our protocol choice
6135 should not depend on that one because it is not authenticated
6136 by the Finished messages.
6139 *) More robust randomness gathering functions for Windows.
6140 [Jeffrey Altman <jaltman@columbia.edu>]
6142 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6143 not set then we don't setup the error code for issuer check errors
6144 to avoid possibly overwriting other errors which the callback does
6145 handle. If an application does set the flag then we assume it knows
6146 what it is doing and can handle the new informational codes
6150 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6151 a general "ANY" type, as such it should be able to decode anything
6152 including tagged types. However it didn't check the class so it would
6153 wrongly interpret tagged types in the same way as their universal
6154 counterpart and unknown types were just rejected. Changed so that the
6155 tagged and unknown types are handled in the same way as a SEQUENCE:
6156 that is the encoding is stored intact. There is also a new type
6157 "V_ASN1_OTHER" which is used when the class is not universal, in this
6158 case we have no idea what the actual type is so we just lump them all
6162 *) On VMS, stdout may very well lead to a file that is written to
6163 in a record-oriented fashion. That means that every write() will
6164 write a separate record, which will be read separately by the
6165 programs trying to read from it. This can be very confusing.
6167 The solution is to put a BIO filter in the way that will buffer
6168 text until a linefeed is reached, and then write everything a
6169 line at a time, so every record written will be an actual line,
6170 not chunks of lines and not (usually doesn't happen, but I've
6171 seen it once) several lines in one record. BIO_f_linebuffer() is
6174 Currently, it's a VMS-only method, because that's where it has
6175 been tested well enough.
6178 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6179 it can return incorrect results.
6180 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6181 but it was in 0.9.6-beta[12].)
6184 *) Disable the check for content being present when verifying detached
6185 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6186 include zero length content when signing messages.
6189 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6190 BIO_ctrl (for BIO pairs).
6193 *) Add DSO method for VMS.
6196 *) Bug fix: Montgomery multiplication could produce results with the
6200 *) Add RPM specification openssl.spec and modify it to build three
6201 packages. The default package contains applications, application
6202 documentation and run-time libraries. The devel package contains
6203 include files, static libraries and function documentation. The
6204 doc package contains the contents of the doc directory. The original
6205 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6208 *) Add a large number of documentation files for many SSL routines.
6209 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6211 *) Add a configuration entry for Sony News 4.
6212 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6214 *) Don't set the two most significant bits to one when generating a
6215 random number < q in the DSA library.
6218 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6219 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6220 the underlying transport is blocking) if a handshake took place.
6221 (The default behaviour is needed by applications such as s_client
6222 and s_server that use select() to determine when to use SSL_read;
6223 but for applications that know in advance when to expect data, it
6224 just makes things more complicated.)
6227 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6231 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6232 work better on such systems.
6233 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6235 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6236 Update PKCS12_parse() so it copies the friendlyName and the
6237 keyid to the certificates aux info.
6240 *) Fix bug in PKCS7_verify() which caused an infinite loop
6241 if there was more than one signature.
6242 [Sven Uszpelkat <su@celocom.de>]
6244 *) Major change in util/mkdef.pl to include extra information
6245 about each symbol, as well as presentig variables as well
6246 as functions. This change means that there's n more need
6247 to rebuild the .num files when some algorithms are excluded.
6250 *) Allow the verify time to be set by an application,
6251 rather than always using the current time.
6254 *) Phase 2 verify code reorganisation. The certificate
6255 verify code now looks up an issuer certificate by a
6256 number of criteria: subject name, authority key id
6257 and key usage. It also verifies self signed certificates
6258 by the same criteria. The main comparison function is
6259 X509_check_issued() which performs these checks.
6261 Lot of changes were necessary in order to support this
6262 without completely rewriting the lookup code.
6264 Authority and subject key identifier are now cached.
6266 The LHASH 'certs' is X509_STORE has now been replaced
6267 by a STACK_OF(X509_OBJECT). This is mainly because an
6268 LHASH can't store or retrieve multiple objects with
6269 the same hash value.
6271 As a result various functions (which were all internal
6272 use only) have changed to handle the new X509_STORE
6273 structure. This will break anything that messed round
6274 with X509_STORE internally.
6276 The functions X509_STORE_add_cert() now checks for an
6277 exact match, rather than just subject name.
6279 The X509_STORE API doesn't directly support the retrieval
6280 of multiple certificates matching a given criteria, however
6281 this can be worked round by performing a lookup first
6282 (which will fill the cache with candidate certificates)
6283 and then examining the cache for matches. This is probably
6284 the best we can do without throwing out X509_LOOKUP
6285 entirely (maybe later...).
6287 The X509_VERIFY_CTX structure has been enhanced considerably.
6289 All certificate lookup operations now go via a get_issuer()
6290 callback. Although this currently uses an X509_STORE it
6291 can be replaced by custom lookups. This is a simple way
6292 to bypass the X509_STORE hackery necessary to make this
6293 work and makes it possible to use more efficient techniques
6294 in future. A very simple version which uses a simple
6295 STACK for its trusted certificate store is also provided
6296 using X509_STORE_CTX_trusted_stack().
6298 The verify_cb() and verify() callbacks now have equivalents
6299 in the X509_STORE_CTX structure.
6301 X509_STORE_CTX also has a 'flags' field which can be used
6302 to customise the verify behaviour.
6305 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6306 excludes S/MIME capabilities.
6309 *) When a certificate request is read in keep a copy of the
6310 original encoding of the signed data and use it when outputing
6311 again. Signatures then use the original encoding rather than
6312 a decoded, encoded version which may cause problems if the
6313 request is improperly encoded.
6316 *) For consistency with other BIO_puts implementations, call
6317 buffer_write(b, ...) directly in buffer_puts instead of calling
6320 In BIO_puts, increment b->num_write as in BIO_write.
6321 [Peter.Sylvester@EdelWeb.fr]
6323 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6324 BN_zero, we may not return a BIGNUM with an array consisting of
6328 *) Avoid calling abort() from within the library when problems are
6329 detected, except if preprocessor symbols have been defined
6330 (such as REF_CHECK, BN_DEBUG etc.).
6333 *) New openssl application 'rsautl'. This utility can be
6334 used for low level RSA operations. DER public key
6335 BIO/fp routines also added.
6338 *) New Configure entry and patches for compiling on QNX 4.
6339 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6341 *) A demo state-machine implementation was sponsored by
6342 Nuron (http://www.nuron.com/) and is now available in
6343 demos/state_machine.
6346 *) New options added to the 'dgst' utility for signature
6347 generation and verification.
6350 *) Unrecognized PKCS#7 content types are now handled via a
6351 catch all ASN1_TYPE structure. This allows unsupported
6352 types to be stored as a "blob" and an application can
6353 encode and decode it manually.
6356 *) Fix various signed/unsigned issues to make a_strex.c
6358 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6360 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6361 length if passed a buffer. ASN1_INTEGER_to_BN failed
6362 if passed a NULL BN and its argument was negative.
6363 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6365 *) Modification to PKCS#7 encoding routines to output definite
6366 length encoding. Since currently the whole structures are in
6367 memory there's not real point in using indefinite length
6368 constructed encoding. However if OpenSSL is compiled with
6369 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6372 *) Added BIO_vprintf() and BIO_vsnprintf().
6375 *) Added more prefixes to parse for in the the strings written
6376 through a logging bio, to cover all the levels that are available
6377 through syslog. The prefixes are now:
6379 PANIC, EMERG, EMR => LOG_EMERG
6380 ALERT, ALR => LOG_ALERT
6381 CRIT, CRI => LOG_CRIT
6382 ERROR, ERR => LOG_ERR
6383 WARNING, WARN, WAR => LOG_WARNING
6384 NOTICE, NOTE, NOT => LOG_NOTICE
6385 INFO, INF => LOG_INFO
6386 DEBUG, DBG => LOG_DEBUG
6388 and as before, if none of those prefixes are present at the
6389 beginning of the string, LOG_ERR is chosen.
6391 On Win32, the LOG_* levels are mapped according to this:
6393 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6394 LOG_WARNING => EVENTLOG_WARNING_TYPE
6395 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6399 *) Made it possible to reconfigure with just the configuration
6400 argument "reconf" or "reconfigure". The command line arguments
6401 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6402 and are retrieved from there when reconfiguring.
6406 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6408 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6411 *) The obj_dat.pl script was messing up the sorting of object
6412 names. The reason was that it compared the quoted version
6413 of strings as a result "OCSP" > "OCSP Signing" because
6414 " > SPACE. Changed script to store unquoted versions of
6415 names and add quotes on output. It was also omitting some
6416 names from the lookup table if they were given a default
6417 value (that is if SN is missing it is given the same
6418 value as LN and vice versa), these are now added on the
6419 grounds that if an object has a name we should be able to
6420 look it up. Finally added warning output when duplicate
6421 short or long names are found.
6424 *) Changes needed for Tandem NSK.
6425 [Scott Uroff <scott@xypro.com>]
6427 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
6428 RSA_padding_check_SSLv23(), special padding was never detected
6429 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
6430 version rollback attacks was not effective.
6432 In s23_clnt.c, don't use special rollback-attack detection padding
6433 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
6434 client; similarly, in s23_srvr.c, don't do the rollback check if
6435 SSL 2.0 is the only protocol enabled in the server.
6438 *) Make it possible to get hexdumps of unprintable data with 'openssl
6439 asn1parse'. By implication, the functions ASN1_parse_dump() and
6440 BIO_dump_indent() are added.
6443 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
6444 these print out strings and name structures based on various
6445 flags including RFC2253 support and proper handling of
6446 multibyte characters. Added options to the 'x509' utility
6447 to allow the various flags to be set.
6450 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
6451 Also change the functions X509_cmp_current_time() and
6452 X509_gmtime_adj() work with an ASN1_TIME structure,
6453 this will enable certificates using GeneralizedTime in validity
6454 dates to be checked.
6457 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
6458 negative public key encodings) on by default,
6459 NO_NEG_PUBKEY_BUG can be set to disable it.
6462 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
6463 content octets. An i2c_ASN1_OBJECT is unnecessary because
6464 the encoding can be trivially obtained from the structure.
6467 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
6468 not read locks (CRYPTO_r_[un]lock).
6471 *) A first attempt at creating official support for shared
6472 libraries through configuration. I've kept it so the
6473 default is static libraries only, and the OpenSSL programs
6474 are always statically linked for now, but there are
6475 preparations for dynamic linking in place.
6476 This has been tested on Linux and Tru64.
6479 *) Randomness polling function for Win9x, as described in:
6480 Peter Gutmann, Software Generation of Practically Strong
6484 *) Fix so PRNG is seeded in req if using an already existing
6488 *) New options to smime application. -inform and -outform
6489 allow alternative formats for the S/MIME message including
6490 PEM and DER. The -content option allows the content to be
6491 specified separately. This should allow things like Netscape
6492 form signing output easier to verify.
6495 *) Fix the ASN1 encoding of tags using the 'long form'.
6498 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
6499 STRING types. These convert content octets to and from the
6500 underlying type. The actual tag and length octets are
6501 already assumed to have been read in and checked. These
6502 are needed because all other string types have virtually
6503 identical handling apart from the tag. By having versions
6504 of the ASN1 functions that just operate on content octets
6505 IMPLICIT tagging can be handled properly. It also allows
6506 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
6507 and ASN1_INTEGER are identical apart from the tag.
6510 *) Change the handling of OID objects as follows:
6512 - New object identifiers are inserted in objects.txt, following
6513 the syntax given in objects.README.
6514 - objects.pl is used to process obj_mac.num and create a new
6516 - obj_dat.pl is used to create a new obj_dat.h, using the data in
6519 This is currently kind of a hack, and the perl code in objects.pl
6520 isn't very elegant, but it works as I intended. The simplest way
6521 to check that it worked correctly is to look in obj_dat.h and
6522 check the array nid_objs and make sure the objects haven't moved
6523 around (this is important!). Additions are OK, as well as
6524 consistent name changes.
6527 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
6530 *) Addition of the command line parameter '-rand file' to 'openssl req'.
6531 The given file adds to whatever has already been seeded into the
6532 random pool through the RANDFILE configuration file option or
6533 environment variable, or the default random state file.
6536 *) mkstack.pl now sorts each macro group into lexical order.
6537 Previously the output order depended on the order the files
6538 appeared in the directory, resulting in needless rewriting
6542 *) Patches to make OpenSSL compile under Win32 again. Mostly
6543 work arounds for the VC++ problem that it treats func() as
6544 func(void). Also stripped out the parts of mkdef.pl that
6545 added extra typesafe functions: these no longer exist.
6548 *) Reorganisation of the stack code. The macros are now all
6549 collected in safestack.h . Each macro is defined in terms of
6550 a "stack macro" of the form SKM_<name>(type, a, b). The
6551 DEBUG_SAFESTACK is now handled in terms of function casts,
6552 this has the advantage of retaining type safety without the
6553 use of additional functions. If DEBUG_SAFESTACK is not defined
6554 then the non typesafe macros are used instead. Also modified the
6555 mkstack.pl script to handle the new form. Needs testing to see
6556 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
6557 the default if no major problems. Similar behaviour for ASN1_SET_OF
6558 and PKCS12_STACK_OF.
6561 *) When some versions of IIS use the 'NET' form of private key the
6562 key derivation algorithm is different. Normally MD5(password) is
6563 used as a 128 bit RC4 key. In the modified case
6564 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
6565 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
6566 as the old Netscape_RSA functions except they have an additional
6567 'sgckey' parameter which uses the modified algorithm. Also added
6568 an -sgckey command line option to the rsa utility. Thanks to
6569 Adrian Peck <bertie@ncipher.com> for posting details of the modified
6570 algorithm to openssl-dev.
6573 *) The evp_local.h macros were using 'c.##kname' which resulted in
6574 invalid expansion on some systems (SCO 5.0.5 for example).
6575 Corrected to 'c.kname'.
6576 [Phillip Porch <root@theporch.com>]
6578 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
6579 a STACK of email addresses from a certificate or request, these look
6580 in the subject name and the subject alternative name extensions and
6581 omit any duplicate addresses.
6584 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
6585 This makes DSA verification about 2 % faster.
6588 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
6589 (meaning that now 2^5 values will be precomputed, which is only 4 KB
6590 plus overhead for 1024 bit moduli).
6591 This makes exponentiations about 0.5 % faster for 1024 bit
6592 exponents (as measured by "openssl speed rsa2048").
6595 *) Rename memory handling macros to avoid conflicts with other
6597 Malloc => OPENSSL_malloc
6598 Malloc_locked => OPENSSL_malloc_locked
6599 Realloc => OPENSSL_realloc
6600 Free => OPENSSL_free
6603 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
6604 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
6607 *) CygWin32 support.
6608 [John Jarvie <jjarvie@newsguy.com>]
6610 *) The type-safe stack code has been rejigged. It is now only compiled
6611 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
6612 by default all type-specific stack functions are "#define"d back to
6613 standard stack functions. This results in more streamlined output
6614 but retains the type-safety checking possibilities of the original
6618 *) The STACK code has been cleaned up, and certain type declarations
6619 that didn't make a lot of sense have been brought in line. This has
6620 also involved a cleanup of sorts in safestack.h to more correctly
6621 map type-safe stack functions onto their plain stack counterparts.
6622 This work has also resulted in a variety of "const"ifications of
6623 lots of the code, especially "_cmp" operations which should normally
6624 be prototyped with "const" parameters anyway.
6627 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
6628 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
6629 (The PRNG state consists of two parts, the large pool 'state' and 'md',
6630 where all of 'md' is used each time the PRNG is used, but 'state'
6631 is used only indexed by a cyclic counter. As entropy may not be
6632 well distributed from the beginning, 'md' is important as a
6633 chaining variable. However, the output function chains only half
6634 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
6635 all of 'md', and seeding with STATE_SIZE dummy bytes will result
6636 in all of 'state' being rewritten, with the new values depending
6637 on virtually all of 'md'. This overcomes the 80 bit limitation.)
6640 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
6641 the handshake is continued after ssl_verify_cert_chain();
6642 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
6643 can lead to 'unexplainable' connection aborts later.
6644 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
6646 *) Major EVP API cipher revision.
6647 Add hooks for extra EVP features. This allows various cipher
6648 parameters to be set in the EVP interface. Support added for variable
6649 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
6650 setting of RC2 and RC5 parameters.
6652 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
6655 Remove lots of duplicated code from the EVP library. For example *every*
6656 cipher init() function handles the 'iv' in the same way according to the
6657 cipher mode. They also all do nothing if the 'key' parameter is NULL and
6658 for CFB and OFB modes they zero ctx->num.
6660 New functionality allows removal of S/MIME code RC2 hack.
6662 Most of the routines have the same form and so can be declared in terms
6665 By shifting this to the top level EVP_CipherInit() it can be removed from
6666 all individual ciphers. If the cipher wants to handle IVs or keys
6667 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
6670 Change lots of functions like EVP_EncryptUpdate() to now return a
6671 value: although software versions of the algorithms cannot fail
6672 any installed hardware versions can.
6675 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
6676 this option is set, tolerate broken clients that send the negotiated
6677 protocol version number instead of the requested protocol version
6681 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
6682 i.e. non-zero for export ciphersuites, zero otherwise.
6683 Previous versions had this flag inverted, inconsistent with
6684 rsa_tmp_cb (..._TMP_RSA_CB).
6685 [Bodo Moeller; problem reported by Amit Chopra]
6687 *) Add missing DSA library text string. Work around for some IIS
6688 key files with invalid SEQUENCE encoding.
6691 *) Add a document (doc/standards.txt) that list all kinds of standards
6692 and so on that are implemented in OpenSSL.
6695 *) Enhance c_rehash script. Old version would mishandle certificates
6696 with the same subject name hash and wouldn't handle CRLs at all.
6697 Added -fingerprint option to crl utility, to support new c_rehash
6701 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6704 *) Fix for SSL server purpose checking. Server checking was
6705 rejecting certificates which had extended key usage present
6706 but no ssl client purpose.
6707 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6709 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6710 is a little unclear about how a blank password is handled.
6711 Since the password in encoded as a BMPString with terminating
6712 double NULL a zero length password would end up as just the
6713 double NULL. However no password at all is different and is
6714 handled differently in the PKCS#12 key generation code. NS
6715 treats a blank password as zero length. MSIE treats it as no
6716 password on export: but it will try both on import. We now do
6717 the same: PKCS12_parse() tries zero length and no password if
6718 the password is set to "" or NULL (NULL is now a valid password:
6719 it wasn't before) as does the pkcs12 application.
6722 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6723 perror when PEM_read_bio_X509_REQ fails, the error message must
6724 be obtained from the error queue.
6727 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6728 it in ERR_remove_state if appropriate, and change ERR_get_state
6729 accordingly to avoid race conditions (this is necessary because
6730 thread_hash is no longer constant once set).
6733 *) Bugfix for linux-elf makefile.one.
6736 *) RSA_get_default_method() will now cause a default
6737 RSA_METHOD to be chosen if one doesn't exist already.
6738 Previously this was only set during a call to RSA_new()
6739 or RSA_new_method(NULL) meaning it was possible for
6740 RSA_get_default_method() to return NULL.
6743 *) Added native name translation to the existing DSO code
6744 that will convert (if the flag to do so is set) filenames
6745 that are sufficiently small and have no path information
6746 into a canonical native form. Eg. "blah" converted to
6747 "libblah.so" or "blah.dll" etc.
6750 *) New function ERR_error_string_n(e, buf, len) which is like
6751 ERR_error_string(e, buf), but writes at most 'len' bytes
6752 including the 0 terminator. For ERR_error_string_n, 'buf'
6754 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6756 *) CONF library reworked to become more general. A new CONF
6757 configuration file reader "class" is implemented as well as a
6758 new functions (NCONF_*, for "New CONF") to handle it. The now
6759 old CONF_* functions are still there, but are reimplemented to
6760 work in terms of the new functions. Also, a set of functions
6761 to handle the internal storage of the configuration data is
6762 provided to make it easier to write new configuration file
6763 reader "classes" (I can definitely see something reading a
6764 configuration file in XML format, for example), called _CONF_*,
6765 or "the configuration storage API"...
6767 The new configuration file reading functions are:
6769 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6770 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6772 NCONF_default, NCONF_WIN32
6774 NCONF_dump_fp, NCONF_dump_bio
6776 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6777 NCONF_new creates a new CONF object. This works in the same way
6778 as other interfaces in OpenSSL, like the BIO interface.
6779 NCONF_dump_* dump the internal storage of the configuration file,
6780 which is useful for debugging. All other functions take the same
6781 arguments as the old CONF_* functions wth the exception of the
6782 first that must be a `CONF *' instead of a `LHASH *'.
6784 To make it easer to use the new classes with the old CONF_* functions,
6785 the function CONF_set_default_method is provided.
6788 *) Add '-tls1' option to 'openssl ciphers', which was already
6789 mentioned in the documentation but had not been implemented.
6790 (This option is not yet really useful because even the additional
6791 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6794 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6795 OpenSSL-based applications) load shared libraries and bind to
6796 them in a portable way.
6797 [Geoff Thorpe, with contributions from Richard Levitte]
6799 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6801 *) Make sure _lrotl and _lrotr are only used with MSVC.
6803 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6804 (the default implementation of RAND_status).
6806 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6807 to '-clrext' (= clear extensions), as intended and documented.
6808 [Bodo Moeller; inconsistency pointed out by Michael Attili
6811 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6812 was larger than the MD block size.
6813 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6815 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6816 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6817 using the passed key: if the passed key was a private key the result
6818 of X509_print(), for example, would be to print out all the private key
6822 *) des_quad_cksum() byte order bug fix.
6823 [Ulf Möller, using the problem description in krb4-0.9.7, where
6824 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6826 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6828 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6830 *) For easily testing in shell scripts whether some command
6831 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6832 returns with exit code 0 iff no command of the given name is available.
6833 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6834 the output goes to stdout and nothing is printed to stderr.
6835 Additional arguments are always ignored.
6837 Since for each cipher there is a command of the same name,
6838 the 'no-cipher' compilation switches can be tested this way.
6840 ('openssl no-XXX' is not able to detect pseudo-commands such
6841 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6844 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6847 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6848 is set; it will be thrown away anyway because each handshake creates
6850 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6851 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6852 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6853 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6856 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6857 'Q' and 'R' lose their special meanings (quit/renegotiate).
6858 This is part of what -quiet does; unlike -quiet, -ign_eof
6859 does not suppress any output.
6862 *) Add compatibility options to the purpose and trust code. The
6863 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6864 accepts a certificate or CA, this was the previous behaviour,
6865 with all the associated security issues.
6867 X509_TRUST_COMPAT is the old trust behaviour: only and
6868 automatically trust self signed roots in certificate store. A
6869 new trust setting X509_TRUST_DEFAULT is used to specify that
6870 a purpose has no associated trust setting and it should instead
6871 use the value in the default purpose.
6874 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6875 and fix a memory leak.
6878 *) In util/mkerr.pl (which implements 'make errors'), preserve
6879 reason strings from the previous version of the .c file, as
6880 the default to have only downcase letters (and digits) in
6881 automatically generated reasons codes is not always appropriate.
6884 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6885 using strerror. Previously, ERR_reason_error_string() returned
6886 library names as reason strings for SYSerr; but SYSerr is a special
6887 case where small numbers are errno values, not library numbers.
6890 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6891 converts DSA parameters into DH parameters. (When creating parameters,
6892 DSA_generate_parameters is used.)
6895 *) Include 'length' (recommended exponent length) in C code generated
6896 by 'openssl dhparam -C'.
6899 *) The second argument to set_label in perlasm was already being used
6900 so couldn't be used as a "file scope" flag. Moved to third argument
6904 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6905 instead of RAND_bytes for encryption IVs and salts.
6908 *) Include RAND_status() into RAND_METHOD instead of implementing
6909 it only for md_rand.c Otherwise replacing the PRNG by calling
6910 RAND_set_rand_method would be impossible.
6913 *) Don't let DSA_generate_key() enter an infinite loop if the random
6914 number generation fails.
6917 *) New 'rand' application for creating pseudo-random output.
6920 *) Added configuration support for Linux/IA64
6921 [Rolf Haberrecker <rolf@suse.de>]
6923 *) Assembler module support for Mingw32.
6926 *) Shared library support for HPUX (in shlib/).
6927 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6929 *) Shared library support for Solaris gcc.
6930 [Lutz Behnke <behnke@trustcenter.de>]
6932 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6934 *) PKCS7_encrypt() was adding text MIME headers twice because they
6935 were added manually and by SMIME_crlf_copy().
6938 *) In bntest.c don't call BN_rand with zero bits argument.
6939 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
6941 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
6942 case was implemented. This caused BN_div_recp() to fail occasionally.
6945 *) Add an optional second argument to the set_label() in the perl
6946 assembly language builder. If this argument exists and is set
6947 to 1 it signals that the assembler should use a symbol whose
6948 scope is the entire file, not just the current function. This
6949 is needed with MASM which uses the format label:: for this scope.
6950 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
6952 *) Change the ASN1 types so they are typedefs by default. Before
6953 almost all types were #define'd to ASN1_STRING which was causing
6954 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
6958 *) Change names of new functions to the new get1/get0 naming
6959 convention: After 'get1', the caller owns a reference count
6960 and has to call ..._free; 'get0' returns a pointer to some
6961 data structure without incrementing reference counters.
6962 (Some of the existing 'get' functions increment a reference
6963 counter, some don't.)
6964 Similarly, 'set1' and 'add1' functions increase reference
6965 counters or duplicate objects.
6968 *) Allow for the possibility of temp RSA key generation failure:
6969 the code used to assume it always worked and crashed on failure.
6972 *) Fix potential buffer overrun problem in BIO_printf().
6973 [Ulf Möller, using public domain code by Patrick Powell; problem
6974 pointed out by David Sacerdote <das33@cornell.edu>]
6976 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
6977 RAND_egd() and RAND_status(). In the command line application,
6978 the EGD socket can be specified like a seed file using RANDFILE
6982 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
6983 Some CAs (e.g. Verisign) distribute certificates in this form.
6986 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
6987 list to exclude them. This means that no special compilation option
6988 is needed to use anonymous DH: it just needs to be included in the
6992 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
6993 EVP_MD_type. The old functionality is available in a new macro called
6994 EVP_MD_md(). Change code that uses it and update docs.
6997 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
6998 where the 'void *' argument is replaced by a function pointer argument.
6999 Previously 'void *' was abused to point to functions, which works on
7000 many platforms, but is not correct. As these functions are usually
7001 called by macros defined in OpenSSL header files, most source code
7002 should work without changes.
7005 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7006 sections with information on -D... compiler switches used for
7007 compiling the library so that applications can see them. To enable
7008 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7009 must be defined. E.g.,
7010 #define OPENSSL_ALGORITHM_DEFINES
7011 #include <openssl/opensslconf.h>
7012 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7013 [Richard Levitte, Ulf and Bodo Möller]
7015 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7019 *) Change the 'other' type in certificate aux info to a STACK_OF
7020 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7021 the required ASN1 format: arbitrary types determined by an OID.
7024 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7025 argument to 'req'. This is not because the function is newer or
7026 better than others it just uses the work 'NEW' in the certificate
7027 request header lines. Some software needs this.
7030 *) Reorganise password command line arguments: now passwords can be
7031 obtained from various sources. Delete the PEM_cb function and make
7032 it the default behaviour: i.e. if the callback is NULL and the
7033 usrdata argument is not NULL interpret it as a null terminated pass
7034 phrase. If usrdata and the callback are NULL then the pass phrase
7035 is prompted for as usual.
7038 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7039 the support is automatically enabled. The resulting binaries will
7040 autodetect the card and use it if present.
7041 [Ben Laurie and Compaq Inc.]
7043 *) Work around for Netscape hang bug. This sends certificate request
7044 and server done in one record. Since this is perfectly legal in the
7045 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7046 the bugs/SSLv3 entry for more info.
7049 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7052 *) Add -rand argument to smime and pkcs12 applications and read/write
7056 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7059 *) Add command line password options to the remaining applications.
7062 *) Bug fix for BN_div_recp() for numerators with an even number of
7066 *) More tests in bntest.c, and changed test_bn output.
7069 *) ./config recognizes MacOS X now.
7072 *) Bug fix for BN_div() when the first words of num and divsor are
7073 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7076 *) Add support for various broken PKCS#8 formats, and command line
7077 options to produce them.
7080 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7081 get temporary BIGNUMs from a BN_CTX.
7084 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7088 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7089 include a #define from the old name to the new. The original intent
7090 was that statically linked binaries could for example just call
7091 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7092 link with digests. This never worked becayse SSLeay_add_all_digests()
7093 and SSLeay_add_all_ciphers() were in the same source file so calling
7094 one would link with the other. They are now in separate source files.
7097 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7100 *) Use a less unusual form of the Miller-Rabin primality test (it used
7101 a binary algorithm for exponentiation integrated into the Miller-Rabin
7102 loop, our standard modexp algorithms are faster).
7105 *) Support for the EBCDIC character set completed.
7106 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7108 *) Source code cleanups: use const where appropriate, eliminate casts,
7109 use void * instead of char * in lhash.
7112 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7113 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7114 this the server could overwrite ephemeral keys that the client
7118 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7119 using 50 iterations of the Rabin-Miller test.
7121 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7122 iterations of the Rabin-Miller test as required by the appendix
7123 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7124 As BN_is_prime_fasttest includes trial division, DSA parameter
7125 generation becomes much faster.
7127 This implies a change for the callback functions in DSA_is_prime
7128 and DSA_generate_parameters: The callback function is called once
7129 for each positive witness in the Rabin-Miller test, not just
7130 occasionally in the inner loop; and the parameters to the
7131 callback function now provide an iteration count for the outer
7132 loop rather than for the current invocation of the inner loop.
7133 DSA_generate_parameters additionally can call the callback
7134 function with an 'iteration count' of -1, meaning that a
7135 candidate has passed the trial division test (when q is generated
7136 from an application-provided seed, trial division is skipped).
7139 *) New function BN_is_prime_fasttest that optionally does trial
7140 division before starting the Rabin-Miller test and has
7141 an additional BN_CTX * argument (whereas BN_is_prime always
7142 has to allocate at least one BN_CTX).
7143 'callback(1, -1, cb_arg)' is called when a number has passed the
7144 trial division stage.
7147 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7151 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7154 *) New function BN_pseudo_rand().
7157 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7158 bignum version of BN_from_montgomery() with the working code from
7159 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7163 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7164 made it impossible to use the same SSL_SESSION data structure in
7165 SSL2 clients in multiple threads.
7168 *) The return value of RAND_load_file() no longer counts bytes obtained
7169 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7170 to seed the PRNG (previously an explicit byte count was required).
7171 [Ulf Möller, Bodo Möller]
7173 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7174 used (char *) instead of (void *) and had casts all over the place.
7177 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7180 *) Retain source code compatibility for BN_prime_checks macro:
7181 BN_is_prime(..., BN_prime_checks, ...) now uses
7182 BN_prime_checks_for_size to determine the appropriate number of
7183 Rabin-Miller iterations.
7186 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7187 DH_CHECK_P_NOT_SAFE_PRIME.
7188 (Check if this is true? OpenPGP calls them "strong".)
7191 *) Merge the functionality of "dh" and "gendh" programs into a new program
7192 "dhparam". The old programs are retained for now but will handle DH keys
7193 (instead of parameters) in future.
7196 *) Make the ciphers, s_server and s_client programs check the return values
7197 when a new cipher list is set.
7200 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7201 ciphers. Before when the 56bit ciphers were enabled the sorting was
7204 The syntax for the cipher sorting has been extended to support sorting by
7205 cipher-strength (using the strength_bits hard coded in the tables).
7206 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7208 Fix a bug in the cipher-command parser: when supplying a cipher command
7209 string with an "undefined" symbol (neither command nor alphanumeric
7210 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7211 an error is flagged.
7213 Due to the strength-sorting extension, the code of the
7214 ssl_create_cipher_list() function was completely rearranged. I hope that
7215 the readability was also increased :-)
7216 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7218 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7219 for the first serial number and places 2 in the serial number file. This
7220 avoids problems when the root CA is created with serial number zero and
7221 the first user certificate has the same issuer name and serial number
7225 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7226 the new code. Add documentation for this stuff.
7229 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7230 X509_*() to X509at_*() on the grounds that they don't handle X509
7231 structures and behave in an analagous way to the X509v3 functions:
7232 they shouldn't be called directly but wrapper functions should be used
7235 So we also now have some wrapper functions that call the X509at functions
7236 when passed certificate requests. (TO DO: similar things can be done with
7237 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7238 things. Some of these need some d2i or i2d and print functionality
7239 because they handle more complex structures.)
7242 *) Add missing #ifndefs that caused missing symbols when building libssl
7243 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7244 NO_RSA in ssl/s2*.c.
7245 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7247 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7248 has a return value which indicates the quality of the random data
7249 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7250 error queue. New function RAND_pseudo_bytes() generates output that is
7251 guaranteed to be unique but not unpredictable. RAND_add is like
7252 RAND_seed, but takes an extra argument for an entropy estimate
7253 (RAND_seed always assumes full entropy).
7256 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7257 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7258 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7259 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7260 false-positive rate of at most 2^-80 for random input.
7263 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7266 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7267 in the 0.9.5 release), this returns the chain
7268 from an X509_CTX structure with a dup of the stack and all
7269 the X509 reference counts upped: so the stack will exist
7270 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7273 Also make SSL_SESSION_print() print out the verify return
7277 *) Add manpage for the pkcs12 command. Also change the default
7278 behaviour so MAC iteration counts are used unless the new
7279 -nomaciter option is used. This improves file security and
7280 only older versions of MSIE (4.0 for example) need it.
7283 *) Honor the no-xxx Configure options when creating .DEF files.
7286 *) Add PKCS#10 attributes to field table: challengePassword,
7287 unstructuredName and unstructuredAddress. These are taken from
7288 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7289 international characters are used.
7291 More changes to X509_ATTRIBUTE code: allow the setting of types
7292 based on strings. Remove the 'loc' parameter when adding
7293 attributes because these will be a SET OF encoding which is sorted
7297 *) Initial changes to the 'req' utility to allow request generation
7298 automation. This will allow an application to just generate a template
7299 file containing all the field values and have req construct the
7302 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7303 used all over the place including certificate requests and PKCS#7
7304 structures. They are currently handled manually where necessary with
7305 some primitive wrappers for PKCS#7. The new functions behave in a
7306 manner analogous to the X509 extension functions: they allow
7307 attributes to be looked up by NID and added.
7309 Later something similar to the X509V3 code would be desirable to
7310 automatically handle the encoding, decoding and printing of the
7311 more complex types. The string types like challengePassword can
7312 be handled by the string table functions.
7314 Also modified the multi byte string table handling. Now there is
7315 a 'global mask' which masks out certain types. The table itself
7316 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7317 is useful when for example there is only one permissible type
7318 (as in countryName) and using the mask might result in no valid
7322 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7323 SSL_get_peer_finished to allow applications to obtain the latest
7324 Finished messages sent to the peer or expected from the peer,
7325 respectively. (SSL_get_peer_finished is usually the Finished message
7326 actually received from the peer, otherwise the protocol will be aborted.)
7328 As the Finished message are message digests of the complete handshake
7329 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7330 be used for external authentication procedures when the authentication
7331 provided by SSL/TLS is not desired or is not enough.
7334 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7335 the host supports BWX extension and if Compaq C is present on the
7336 $PATH. Just exploiting of the BWX extension results in 20-30%
7337 performance kick for some algorithms, e.g. DES and RC4 to mention
7338 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7342 *) Add support for MS "fast SGC". This is arguably a violation of the
7343 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7344 weak crypto and after checking the certificate is SGC a second one
7345 with strong crypto. MS SGC stops the first handshake after receiving
7346 the server certificate message and sends a second client hello. Since
7347 a server will typically do all the time consuming operations before
7348 expecting any further messages from the client (server key exchange
7349 is the most expensive) there is little difference between the two.
7351 To get OpenSSL to support MS SGC we have to permit a second client
7352 hello message after we have sent server done. In addition we have to
7353 reset the MAC if we do get this second client hello.
7356 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7357 if a DER encoded private key is RSA or DSA traditional format. Changed
7358 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7359 format DER encoded private key. Newer code should use PKCS#8 format which
7360 has the key type encoded in the ASN1 structure. Added DER private key
7361 support to pkcs8 application.
7364 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7365 ciphersuites has been selected (as required by the SSL 3/TLS 1
7366 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7367 is set, we interpret this as a request to violate the specification
7368 (the worst that can happen is a handshake failure, and 'correct'
7369 behaviour would result in a handshake failure anyway).
7372 *) In SSL_CTX_add_session, take into account that there might be multiple
7373 SSL_SESSION structures with the same session ID (e.g. when two threads
7374 concurrently obtain them from an external cache).
7375 The internal cache can handle only one SSL_SESSION with a given ID,
7376 so if there's a conflict, we now throw out the old one to achieve
7380 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7381 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7382 some routines that use cipher OIDs: some ciphers do not have OIDs
7383 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7387 *) Simplify the trust setting structure and code. Now we just have
7388 two sequences of OIDs for trusted and rejected settings. These will
7389 typically have values the same as the extended key usage extension
7390 and any application specific purposes.
7392 The trust checking code now has a default behaviour: it will just
7393 check for an object with the same NID as the passed id. Functions can
7394 be provided to override either the default behaviour or the behaviour
7395 for a given id. SSL client, server and email already have functions
7396 in place for compatibility: they check the NID and also return "trusted"
7397 if the certificate is self signed.
7400 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7401 traditional format into an EVP_PKEY structure.
7404 *) Add a password callback function PEM_cb() which either prompts for
7405 a password if usr_data is NULL or otherwise assumes it is a null
7406 terminated password. Allow passwords to be passed on command line
7407 environment or config files in a few more utilities.
7410 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7411 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7412 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7413 Update documentation.
7416 *) Support for ASN1 "NULL" type. This could be handled before by using
7417 ASN1_TYPE but there wasn't any function that would try to read a NULL
7418 and produce an error if it couldn't. For compatibility we also have
7419 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7420 don't allocate anything because they don't need to.
7423 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
7425 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
7427 *) Rebuild of the memory allocation routines used by OpenSSL code and
7428 possibly others as well. The purpose is to make an interface that
7429 provide hooks so anyone can build a separate set of allocation and
7430 deallocation routines to be used by OpenSSL, for example memory
7431 pool implementations, or something else, which was previously hard
7432 since Malloc(), Realloc() and Free() were defined as macros having
7433 the values malloc, realloc and free, respectively (except for Win32
7434 compilations). The same is provided for memory debugging code.
7435 OpenSSL already comes with functionality to find memory leaks, but
7436 this gives people a chance to debug other memory problems.
7438 With these changes, a new set of functions and macros have appeared:
7440 CRYPTO_set_mem_debug_functions() [F]
7441 CRYPTO_get_mem_debug_functions() [F]
7442 CRYPTO_dbg_set_options() [F]
7443 CRYPTO_dbg_get_options() [F]
7444 CRYPTO_malloc_debug_init() [M]
7446 The memory debug functions are NULL by default, unless the library
7447 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
7448 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
7449 gives the standard debugging functions that come with OpenSSL) or
7450 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
7451 provided by the library user) must be used. When the standard
7452 debugging functions are used, CRYPTO_dbg_set_options can be used to
7453 request additional information:
7454 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
7455 the CRYPTO_MDEBUG_xxx macro when compiling the library.
7457 Also, things like CRYPTO_set_mem_functions will always give the
7458 expected result (the new set of functions is used for allocation
7459 and deallocation) at all times, regardless of platform and compiler
7462 To finish it up, some functions that were never use in any other
7463 way than through macros have a new API and new semantic:
7466 CRYPTO_dbg_realloc()
7469 All macros of value have retained their old syntax.
7470 [Richard Levitte and Bodo Moeller]
7472 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
7473 ordering of SMIMECapabilities wasn't in "strength order" and there
7474 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
7478 *) Some ASN1 types with illegal zero length encoding (INTEGER,
7479 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
7480 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
7482 *) Merge in my S/MIME library for OpenSSL. This provides a simple
7483 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
7484 functionality to handle multipart/signed properly) and a utility
7485 called 'smime' to call all this stuff. This is based on code I
7486 originally wrote for Celo who have kindly allowed it to be
7487 included in OpenSSL.
7490 *) Add variants des_set_key_checked and des_set_key_unchecked of
7491 des_set_key (aka des_key_sched). Global variable des_check_key
7492 decides which of these is called by des_set_key; this way
7493 des_check_key behaves as it always did, but applications and
7494 the library itself, which was buggy for des_check_key == 1,
7495 have a cleaner way to pick the version they need.
7498 *) New function PKCS12_newpass() which changes the password of a
7502 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
7503 dynamic mix. In both cases the ids can be used as an index into the
7504 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
7505 functions so they accept a list of the field values and the
7506 application doesn't need to directly manipulate the X509_TRUST
7510 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
7514 *) Modify the way the V3 extension code looks up extensions. This now
7515 works in a similar way to the object code: we have some "standard"
7516 extensions in a static table which is searched with OBJ_bsearch()
7517 and the application can add dynamic ones if needed. The file
7518 crypto/x509v3/ext_dat.h now has the info: this file needs to be
7519 updated whenever a new extension is added to the core code and kept
7520 in ext_nid order. There is a simple program 'tabtest.c' which checks
7521 this. New extensions are not added too often so this file can readily
7522 be maintained manually.
7524 There are two big advantages in doing things this way. The extensions
7525 can be looked up immediately and no longer need to be "added" using
7526 X509V3_add_standard_extensions(): this function now does nothing.
7527 [Side note: I get *lots* of email saying the extension code doesn't
7528 work because people forget to call this function]
7529 Also no dynamic allocation is done unless new extensions are added:
7530 so if we don't add custom extensions there is no need to call
7531 X509V3_EXT_cleanup().
7534 *) Modify enc utility's salting as follows: make salting the default. Add a
7535 magic header, so unsalted files fail gracefully instead of just decrypting
7536 to garbage. This is because not salting is a big security hole, so people
7537 should be discouraged from doing it.
7540 *) Fixes and enhancements to the 'x509' utility. It allowed a message
7541 digest to be passed on the command line but it only used this
7542 parameter when signing a certificate. Modified so all relevant
7543 operations are affected by the digest parameter including the
7544 -fingerprint and -x509toreq options. Also -x509toreq choked if a
7545 DSA key was used because it didn't fix the digest.
7548 *) Initial certificate chain verify code. Currently tests the untrusted
7549 certificates for consistency with the verify purpose (which is set
7550 when the X509_STORE_CTX structure is set up) and checks the pathlength.
7552 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
7553 this is because it will reject chains with invalid extensions whereas
7554 every previous version of OpenSSL and SSLeay made no checks at all.
7556 Trust code: checks the root CA for the relevant trust settings. Trust
7557 settings have an initial value consistent with the verify purpose: e.g.
7558 if the verify purpose is for SSL client use it expects the CA to be
7559 trusted for SSL client use. However the default value can be changed to
7560 permit custom trust settings: one example of this would be to only trust
7561 certificates from a specific "secure" set of CAs.
7563 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
7564 which should be used for version portability: especially since the
7565 verify structure is likely to change more often now.
7567 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
7568 to set them. If not set then assume SSL clients will verify SSL servers
7571 Two new options to the verify program: -untrusted allows a set of
7572 untrusted certificates to be passed in and -purpose which sets the
7573 intended purpose of the certificate. If a purpose is set then the
7574 new chain verify code is used to check extension consistency.
7577 *) Support for the authority information access extension.
7580 *) Modify RSA and DSA PEM read routines to transparently handle
7581 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
7582 public keys in a format compatible with certificate
7583 SubjectPublicKeyInfo structures. Unfortunately there were already
7584 functions called *_PublicKey_* which used various odd formats so
7585 these are retained for compatibility: however the DSA variants were
7586 never in a public release so they have been deleted. Changed dsa/rsa
7587 utilities to handle the new format: note no releases ever handled public
7588 keys so we should be OK.
7590 The primary motivation for this change is to avoid the same fiasco
7591 that dogs private keys: there are several incompatible private key
7592 formats some of which are standard and some OpenSSL specific and
7593 require various evil hacks to allow partial transparent handling and
7594 even then it doesn't work with DER formats. Given the option anything
7595 other than PKCS#8 should be dumped: but the other formats have to
7596 stay in the name of compatibility.
7598 With public keys and the benefit of hindsight one standard format
7599 is used which works with EVP_PKEY, RSA or DSA structures: though
7600 it clearly returns an error if you try to read the wrong kind of key.
7602 Added a -pubkey option to the 'x509' utility to output the public key.
7603 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
7604 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
7605 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
7606 that do the same as the EVP_PKEY_assign_*() except they up the
7607 reference count of the added key (they don't "swallow" the
7611 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
7612 CRLs would fail if the file contained no certificates or no CRLs:
7613 added a new function to read in both types and return the number
7614 read: this means that if none are read it will be an error. The
7615 DER versions of the certificate and CRL reader would always fail
7616 because it isn't possible to mix certificates and CRLs in DER format
7617 without choking one or the other routine. Changed this to just read
7618 a certificate: this is the best we can do. Also modified the code
7619 in apps/verify.c to take notice of return codes: it was previously
7620 attempting to read in certificates from NULL pointers and ignoring
7621 any errors: this is one reason why the cert and CRL reader seemed
7622 to work. It doesn't check return codes from the default certificate
7623 routines: these may well fail if the certificates aren't installed.
7626 *) Code to support otherName option in GeneralName.
7629 *) First update to verify code. Change the verify utility
7630 so it warns if it is passed a self signed certificate:
7631 for consistency with the normal behaviour. X509_verify
7632 has been modified to it will now verify a self signed
7633 certificate if *exactly* the same certificate appears
7634 in the store: it was previously impossible to trust a
7635 single self signed certificate. This means that:
7636 openssl verify ss.pem
7637 now gives a warning about a self signed certificate but
7638 openssl verify -CAfile ss.pem ss.pem
7642 *) For servers, store verify_result in SSL_SESSION data structure
7643 (and add it to external session representation).
7644 This is needed when client certificate verifications fails,
7645 but an application-provided verification callback (set by
7646 SSL_CTX_set_cert_verify_callback) allows accepting the session
7647 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
7648 but returns 1): When the session is reused, we have to set
7649 ssl->verify_result to the appropriate error code to avoid
7651 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
7653 *) Fix a bug in the new PKCS#7 code: it didn't consider the
7654 case in PKCS7_dataInit() where the signed PKCS7 structure
7655 didn't contain any existing data because it was being created.
7656 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
7658 *) Add a salt to the key derivation routines in enc.c. This
7659 forms the first 8 bytes of the encrypted file. Also add a
7660 -S option to allow a salt to be input on the command line.
7663 *) New function X509_cmp(). Oddly enough there wasn't a function
7664 to compare two certificates. We do this by working out the SHA1
7665 hash and comparing that. X509_cmp() will be needed by the trust
7669 *) SSL_get1_session() is like SSL_get_session(), but increments
7670 the reference count in the SSL_SESSION returned.
7671 [Geoff Thorpe <geoff@eu.c2.net>]
7673 *) Fix for 'req': it was adding a null to request attributes.
7674 Also change the X509_LOOKUP and X509_INFO code to handle
7675 certificate auxiliary information.
7678 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
7682 *) Add the possibility to add extra information to the memory leak
7683 detecting output, to form tracebacks, showing from where each
7684 allocation was originated: CRYPTO_push_info("constant string") adds
7685 the string plus current file name and line number to a per-thread
7686 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
7687 is like calling CYRPTO_pop_info() until the stack is empty.
7688 Also updated memory leak detection code to be multi-thread-safe.
7691 *) Add options -text and -noout to pkcs7 utility and delete the
7692 encryption options which never did anything. Update docs.
7695 *) Add options to some of the utilities to allow the pass phrase
7696 to be included on either the command line (not recommended on
7697 OSes like Unix) or read from the environment. Update the
7698 manpages and fix a few bugs.
7701 *) Add a few manpages for some of the openssl commands.
7704 *) Fix the -revoke option in ca. It was freeing up memory twice,
7705 leaking and not finding already revoked certificates.
7708 *) Extensive changes to support certificate auxiliary information.
7709 This involves the use of X509_CERT_AUX structure and X509_AUX
7710 functions. An X509_AUX function such as PEM_read_X509_AUX()
7711 can still read in a certificate file in the usual way but it
7712 will also read in any additional "auxiliary information". By
7713 doing things this way a fair degree of compatibility can be
7714 retained: existing certificates can have this information added
7715 using the new 'x509' options.
7717 Current auxiliary information includes an "alias" and some trust
7718 settings. The trust settings will ultimately be used in enhanced
7719 certificate chain verification routines: currently a certificate
7720 can only be trusted if it is self signed and then it is trusted
7724 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7725 The problem was that one of the replacement routines had not been working
7726 since SSLeay releases. For now the offending routine has been replaced
7727 with non-optimised assembler. Even so, this now gives around 95%
7728 performance improvement for 1024 bit RSA signs.
7731 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7732 handling. Most clients have the effective key size in bits equal to
7733 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7734 A few however don't do this and instead use the size of the decrypted key
7735 to determine the RC2 key length and the AlgorithmIdentifier to determine
7736 the effective key length. In this case the effective key length can still
7737 be 40 bits but the key length can be 168 bits for example. This is fixed
7738 by manually forcing an RC2 key into the EVP_PKEY structure because the
7739 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7740 the key length and effective key length are equal.
7743 *) Add a bunch of functions that should simplify the creation of
7744 X509_NAME structures. Now you should be able to do:
7745 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7746 and have it automatically work out the correct field type and fill in
7747 the structures. The more adventurous can try:
7748 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7749 and it will (hopefully) work out the correct multibyte encoding.
7752 *) Change the 'req' utility to use the new field handling and multibyte
7753 copy routines. Before the DN field creation was handled in an ad hoc
7754 way in req, ca, and x509 which was rather broken and didn't support
7755 BMPStrings or UTF8Strings. Since some software doesn't implement
7756 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7757 using the dirstring_type option. See the new comment in the default
7758 openssl.cnf for more info.
7761 *) Make crypto/rand/md_rand.c more robust:
7762 - Assure unique random numbers after fork().
7763 - Make sure that concurrent threads access the global counter and
7764 md serializably so that we never lose entropy in them
7765 or use exactly the same state in multiple threads.
7766 Access to the large state is not always serializable because
7767 the additional locking could be a performance killer, and
7768 md should be large enough anyway.
7771 *) New file apps/app_rand.c with commonly needed functionality
7772 for handling the random seed file.
7774 Use the random seed file in some applications that previously did not:
7776 dsaparam -genkey (which also ignored its '-rand' option),
7779 x509 (when signing).
7780 Except on systems with /dev/urandom, it is crucial to have a random
7781 seed file at least for key creation, DSA signing, and for DH exchanges;
7782 for RSA signatures we could do without one.
7784 gendh and gendsa (unlike genrsa) used to read only the first byte
7785 of each file listed in the '-rand' option. The function as previously
7786 found in genrsa is now in app_rand.c and is used by all programs
7787 that support '-rand'.
7790 *) In RAND_write_file, use mode 0600 for creating files;
7791 don't just chmod when it may be too late.
7794 *) Report an error from X509_STORE_load_locations
7795 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7798 *) New function ASN1_mbstring_copy() this copies a string in either
7799 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7800 into an ASN1_STRING type. A mask of permissible types is passed
7801 and it chooses the "minimal" type to use or an error if not type
7805 *) Add function equivalents to the various macros in asn1.h. The old
7806 macros are retained with an M_ prefix. Code inside the library can
7807 use the M_ macros. External code (including the openssl utility)
7808 should *NOT* in order to be "shared library friendly".
7811 *) Add various functions that can check a certificate's extensions
7812 to see if it usable for various purposes such as SSL client,
7813 server or S/MIME and CAs of these types. This is currently
7814 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7815 verification. Also added a -purpose flag to x509 utility to
7816 print out all the purposes.
7819 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7823 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7824 for, obtain and decode and extension and obtain its critical flag.
7825 This allows all the necessary extension code to be handled in a
7826 single function call.
7829 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7830 platforms. See crypto/rc4/rc4_enc.c for further details.
7833 *) New -noout option to asn1parse. This causes no output to be produced
7834 its main use is when combined with -strparse and -out to extract data
7835 from a file (which may not be in ASN.1 format).
7838 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7839 when producing the local key id.
7840 [Richard Levitte <levitte@stacken.kth.se>]
7842 *) New option -dhparam in s_server. This allows a DH parameter file to be
7843 stated explicitly. If it is not stated then it tries the first server
7844 certificate file. The previous behaviour hard coded the filename
7848 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7849 a public key to be input or output. For example:
7850 openssl rsa -in key.pem -pubout -out pubkey.pem
7851 Also added necessary DSA public key functions to handle this.
7854 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7855 in the message. This was handled by allowing
7856 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7857 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7859 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7860 to the end of the strings whereas this didn't. This would cause problems
7861 if strings read with d2i_ASN1_bytes() were later modified.
7862 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7864 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7865 data and it contains EOF it will end up returning an error. This is
7866 caused by input 46 bytes long. The cause is due to the way base64
7867 BIOs find the start of base64 encoded data. They do this by trying a
7868 trial decode on each line until they find one that works. When they
7869 do a flag is set and it starts again knowing it can pass all the
7870 data directly through the decoder. Unfortunately it doesn't reset
7871 the context it uses. This means that if EOF is reached an attempt
7872 is made to pass two EOFs through the context and this causes the
7873 resulting error. This can also cause other problems as well. As is
7874 usual with these problems it takes *ages* to find and the fix is
7875 trivial: move one line.
7876 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7878 *) Ugly workaround to get s_client and s_server working under Windows. The
7879 old code wouldn't work because it needed to select() on sockets and the
7880 tty (for keypresses and to see if data could be written). Win32 only
7881 supports select() on sockets so we select() with a 1s timeout on the
7882 sockets and then see if any characters are waiting to be read, if none
7883 are present then we retry, we also assume we can always write data to
7884 the tty. This isn't nice because the code then blocks until we've
7885 received a complete line of data and it is effectively polling the
7886 keyboard at 1s intervals: however it's quite a bit better than not
7887 working at all :-) A dedicated Windows application might handle this
7888 with an event loop for example.
7891 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7892 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7893 will be called when RSA_sign() and RSA_verify() are used. This is useful
7894 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7895 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7896 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7897 This necessitated the support of an extra signature type NID_md5_sha1
7898 for SSL signatures and modifications to the SSL library to use it instead
7899 of calling RSA_public_decrypt() and RSA_private_encrypt().
7902 *) Add new -verify -CAfile and -CApath options to the crl program, these
7903 will lookup a CRL issuers certificate and verify the signature in a
7904 similar way to the verify program. Tidy up the crl program so it
7905 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7906 less strict. It will now permit CRL extensions even if it is not
7907 a V2 CRL: this will allow it to tolerate some broken CRLs.
7910 *) Initialize all non-automatic variables each time one of the openssl
7911 sub-programs is started (this is necessary as they may be started
7912 multiple times from the "OpenSSL>" prompt).
7913 [Lennart Bang, Bodo Moeller]
7915 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7916 removing all other RSA functionality (this is what NO_RSA does). This
7917 is so (for example) those in the US can disable those operations covered
7918 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7922 *) Non-copying interface to BIO pairs.
7923 (still largely untested)
7926 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7927 ASCII string. This was handled independently in various places before.
7930 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7931 UTF8 strings a character at a time.
7934 *) Use client_version from client hello to select the protocol
7935 (s23_srvr.c) and for RSA client key exchange verification
7936 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
7939 *) Add various utility functions to handle SPKACs, these were previously
7940 handled by poking round in the structure internals. Added new function
7941 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
7942 print, verify and generate SPKACs. Based on an original idea from
7943 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
7946 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
7949 *) Allow the config file extension section to be overwritten on the
7950 command line. Based on an original idea from Massimiliano Pala
7951 <madwolf@comune.modena.it>. The new option is called -extensions
7952 and can be applied to ca, req and x509. Also -reqexts to override
7953 the request extensions in req and -crlexts to override the crl extensions
7957 *) Add new feature to the SPKAC handling in ca. Now you can include
7958 the same field multiple times by preceding it by "XXXX." for example:
7961 this is the same syntax as used in the req config file.
7964 *) Allow certificate extensions to be added to certificate requests. These
7965 are specified in a 'req_extensions' option of the req section of the
7966 config file. They can be printed out with the -text option to req but
7967 are otherwise ignored at present.
7970 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
7971 data read consists of only the final block it would not decrypted because
7972 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
7973 A misplaced 'break' also meant the decrypted final block might not be
7974 copied until the next read.
7977 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
7978 a few extra parameters to the DH structure: these will be useful if
7979 for example we want the value of 'q' or implement X9.42 DH.
7982 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
7983 provides hooks that allow the default DSA functions or functions on a
7984 "per key" basis to be replaced. This allows hardware acceleration and
7985 hardware key storage to be handled without major modification to the
7986 library. Also added low level modexp hooks and CRYPTO_EX structure and
7987 associated functions.
7990 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
7991 as "read only": it can't be written to and the buffer it points to will
7992 not be freed. Reading from a read only BIO is much more efficient than
7993 a normal memory BIO. This was added because there are several times when
7994 an area of memory needs to be read from a BIO. The previous method was
7995 to create a memory BIO and write the data to it, this results in two
7996 copies of the data and an O(n^2) reading algorithm. There is a new
7997 function BIO_new_mem_buf() which creates a read only memory BIO from
7998 an area of memory. Also modified the PKCS#7 routines to use read only
8002 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8003 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8004 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8005 but a retry condition occured while trying to read the rest.
8008 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8009 NID_pkcs7_encrypted by default: this was wrong since this should almost
8010 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8011 the encrypted data type: this is a more sensible place to put it and it
8012 allows the PKCS#12 code to be tidied up that duplicated this
8016 *) Changed obj_dat.pl script so it takes its input and output files on
8017 the command line. This should avoid shell escape redirection problems
8021 *) Initial support for certificate extension requests, these are included
8022 in things like Xenroll certificate requests. Included functions to allow
8023 extensions to be obtained and added.
8026 *) -crlf option to s_client and s_server for sending newlines as
8027 CRLF (as required by many protocols).
8030 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8032 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8033 [Ralf S. Engelschall]
8035 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8036 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8038 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8042 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8043 DH parameters/keys (q is lost during that conversion, but the resulting
8044 DH parameters contain its length).
8046 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8047 much faster than DH_generate_parameters (which creates parameters
8048 where p = 2*q + 1), and also the smaller q makes DH computations
8049 much more efficient (160-bit exponentiation instead of 1024-bit
8050 exponentiation); so this provides a convenient way to support DHE
8051 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8052 utter importance to use
8053 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8055 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8056 when such DH parameters are used, because otherwise small subgroup
8057 attacks may become possible!
8060 *) Avoid memory leak in i2d_DHparams.
8063 *) Allow the -k option to be used more than once in the enc program:
8064 this allows the same encrypted message to be read by multiple recipients.
8067 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8068 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8069 it will always use the numerical form of the OID, even if it has a short
8073 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8074 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8075 otherwise bn_mod_exp was called. In the case of hardware keys for example
8076 no private key components need be present and it might store extra data
8077 in the RSA structure, which cannot be accessed from bn_mod_exp.
8078 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8079 private key operations.
8082 *) Added support for SPARC Linux.
8085 *) pem_password_cb function type incompatibly changed from
8086 typedef int pem_password_cb(char *buf, int size, int rwflag);
8088 ....(char *buf, int size, int rwflag, void *userdata);
8089 so that applications can pass data to their callbacks:
8090 The PEM[_ASN1]_{read,write}... functions and macros now take an
8091 additional void * argument, which is just handed through whenever
8092 the password callback is called.
8093 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8095 New function SSL_CTX_set_default_passwd_cb_userdata.
8097 Compatibility note: As many C implementations push function arguments
8098 onto the stack in reverse order, the new library version is likely to
8099 interoperate with programs that have been compiled with the old
8100 pem_password_cb definition (PEM_whatever takes some data that
8101 happens to be on the stack as its last argument, and the callback
8102 just ignores this garbage); but there is no guarantee whatsoever that
8105 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8106 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8107 problems not only on Windows, but also on some Unix platforms.
8108 To avoid problematic command lines, these definitions are now in an
8109 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8110 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8113 *) MIPS III/IV assembler module is reimplemented.
8116 *) More DES library cleanups: remove references to srand/rand and
8117 delete an unused file.
8120 *) Add support for the the free Netwide assembler (NASM) under Win32,
8121 since not many people have MASM (ml) and it can be hard to obtain.
8122 This is currently experimental but it seems to work OK and pass all
8123 the tests. Check out INSTALL.W32 for info.
8126 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8127 without temporary keys kept an extra copy of the server key,
8128 and connections with temporary keys did not free everything in case
8132 *) New function RSA_check_key and new openssl rsa option -check
8133 for verifying the consistency of RSA keys.
8134 [Ulf Moeller, Bodo Moeller]
8136 *) Various changes to make Win32 compile work:
8137 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8138 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8139 comparison" warnings.
8140 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8143 *) Add a debugging option to PKCS#5 v2 key generation function: when
8144 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8145 derived keys are printed to stderr.
8148 *) Copy the flags in ASN1_STRING_dup().
8149 [Roman E. Pavlov <pre@mo.msk.ru>]
8151 *) The x509 application mishandled signing requests containing DSA
8152 keys when the signing key was also DSA and the parameters didn't match.
8154 It was supposed to omit the parameters when they matched the signing key:
8155 the verifying software was then supposed to automatically use the CA's
8156 parameters if they were absent from the end user certificate.
8158 Omitting parameters is no longer recommended. The test was also
8159 the wrong way round! This was probably due to unusual behaviour in
8160 EVP_cmp_parameters() which returns 1 if the parameters match.
8161 This meant that parameters were omitted when they *didn't* match and
8162 the certificate was useless. Certificates signed with 'ca' didn't have
8164 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8166 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8167 The interface is as follows:
8168 Applications can use
8169 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8170 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8171 "off" is now the default.
8172 The library internally uses
8173 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8174 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8175 to disable memory-checking temporarily.
8177 Some inconsistent states that previously were possible (and were
8178 even the default) are now avoided.
8180 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8181 with each memory chunk allocated; this is occasionally more helpful
8182 than just having a counter.
8184 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8186 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8190 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8191 which largely parallels "options", but is for changing API behaviour,
8192 whereas "options" are about protocol behaviour.
8193 Initial "mode" flags are:
8195 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8196 a single record has been written.
8197 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8198 retries use the same buffer location.
8199 (But all of the contents must be
8203 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8206 *) Fix problems with no-hmac etc.
8207 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8209 *) New functions RSA_get_default_method(), RSA_set_method() and
8210 RSA_get_method(). These allows replacement of RSA_METHODs without having
8211 to mess around with the internals of an RSA structure.
8214 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8215 Also really enable memory leak checks in openssl.c and in some
8217 [Chad C. Mulligan, Bodo Moeller]
8219 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8220 up the length of negative integers. This has now been simplified to just
8221 store the length when it is first determined and use it later, rather
8222 than trying to keep track of where data is copied and updating it to
8224 [Steve Henson, reported by Brien Wheeler
8225 <bwheeler@authentica-security.com>]
8227 *) Add a new function PKCS7_signatureVerify. This allows the verification
8228 of a PKCS#7 signature but with the signing certificate passed to the
8229 function itself. This contrasts with PKCS7_dataVerify which assumes the
8230 certificate is present in the PKCS#7 structure. This isn't always the
8231 case: certificates can be omitted from a PKCS#7 structure and be
8232 distributed by "out of band" means (such as a certificate database).
8235 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8236 function prototypes in pem.h, also change util/mkdef.pl to add the
8237 necessary function names.
8240 *) mk1mf.pl (used by Windows builds) did not properly read the
8241 options set by Configure in the top level Makefile, and Configure
8242 was not even able to write more than one option correctly.
8243 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8246 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8247 file to be loaded from a BIO or FILE pointer. The BIO version will
8248 for example allow memory BIOs to contain config info.
8251 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8252 Whoever hopes to achieve shared-library compatibility across versions
8253 must use this, not the compile-time macro.
8254 (Exercise 0.9.4: Which is the minimum library version required by
8256 Note: All this applies only to multi-threaded programs, others don't
8260 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8261 through a BIO pair triggered the default case, i.e.
8262 SSLerr(...,SSL_R_UNKNOWN_STATE).
8265 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8266 can use the SSL library even if none of the specific BIOs is
8270 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8271 for the encoded length.
8272 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8274 *) Add initial documentation of the X509V3 functions.
8277 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8278 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8279 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8280 secure PKCS#8 private key format with a high iteration count.
8283 *) Fix determination of Perl interpreter: A perl or perl5
8284 _directory_ in $PATH was also accepted as the interpreter.
8285 [Ralf S. Engelschall]
8287 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8288 wrong with it but it was very old and did things like calling
8289 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8293 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8294 to use the new extension code.
8297 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8298 with macros. This should make it easier to change their form, add extra
8299 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8303 *) Add to configuration table a new entry that can specify an alternative
8304 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8305 according to Mark Crispin <MRC@Panda.COM>.
8309 *) DES CBC did not update the IV. Weird.
8312 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8313 Changing the behaviour of the former might break existing programs --
8314 where IV updating is needed, des_ncbc_encrypt can be used.
8317 *) When bntest is run from "make test" it drives bc to check its
8318 calculations, as well as internally checking them. If an internal check
8319 fails, it needs to cause bc to give a non-zero result or make test carries
8320 on without noticing the failure. Fixed.
8323 *) DES library cleanups.
8326 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8327 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8328 ciphers. NOTE: although the key derivation function has been verified
8329 against some published test vectors it has not been extensively tested
8330 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8334 *) Instead of "mkdir -p", which is not fully portable, use new
8335 Perl script "util/mkdir-p.pl".
8338 *) Rewrite the way password based encryption (PBE) is handled. It used to
8339 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8340 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8341 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8342 the 'parameter' field of the AlgorithmIdentifier is passed to the
8343 underlying key generation function so it must do its own ASN1 parsing.
8344 This has also changed the EVP_PBE_CipherInit() function which now has a
8345 'parameter' argument instead of literal salt and iteration count values
8346 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8349 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8350 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8351 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8352 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8353 value was just used as a "magic string" and not used directly its
8354 value doesn't matter.
8357 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8361 *) "linux-sparc64" configuration (ultrapenguin).
8362 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8363 "linux-sparc" configuration.
8364 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8366 *) config now generates no-xxx options for missing ciphers.
8369 *) Support the EBCDIC character set (work in progress).
8370 File ebcdic.c not yet included because it has a different license.
8371 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8373 *) Support BS2000/OSD-POSIX.
8374 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8376 *) Make callbacks for key generation use void * instead of char *.
8379 *) Make S/MIME samples compile (not yet tested).
8382 *) Additional typesafe stacks.
8385 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8389 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8391 *) New configuration variant "sco5-gcc".
8393 *) Updated some demos.
8394 [Sean O Riordain, Wade Scholine]
8396 *) Add missing BIO_free at exit of pkcs12 application.
8399 *) Fix memory leak in conf.c.
8402 *) Updates for Win32 to assembler version of MD5.
8405 *) Set #! path to perl in apps/der_chop to where we found it
8406 instead of using a fixed path.
8409 *) SHA library changes for irix64-mips4-cc.
8412 *) Improvements for VMS support.
8416 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8418 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8419 This also avoids the problems with SC4.2 and unpatched SC5.
8420 [Andy Polyakov <appro@fy.chalmers.se>]
8422 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
8423 These are required because of the typesafe stack would otherwise break
8424 existing code. If old code used a structure member which used to be STACK
8425 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
8426 sk_num or sk_value it would produce an error because the num, data members
8427 are not present in STACK_OF. Now it just produces a warning. sk_set
8428 replaces the old method of assigning a value to sk_value
8429 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
8430 that does this will no longer work (and should use sk_set instead) but
8431 this could be regarded as a "questionable" behaviour anyway.
8434 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
8435 correctly handle encrypted S/MIME data.
8438 *) Change type of various DES function arguments from des_cblock
8439 (which means, in function argument declarations, pointer to char)
8440 to des_cblock * (meaning pointer to array with 8 char elements),
8441 which allows the compiler to do more typechecking; it was like
8442 that back in SSLeay, but with lots of ugly casts.
8444 Introduce new type const_des_cblock.
8447 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
8448 problems: find RecipientInfo structure that matches recipient certificate
8449 and initialise the ASN1 structures properly based on passed cipher.
8452 *) Belatedly make the BN tests actually check the results.
8455 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
8456 to and from BNs: it was completely broken. New compilation option
8457 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
8458 key elements as negative integers.
8461 *) Reorganize and speed up MD5.
8462 [Andy Polyakov <appro@fy.chalmers.se>]
8465 [Richard Levitte <richard@levitte.org>]
8467 *) New option -out to asn1parse to allow the parsed structure to be
8468 output to a file. This is most useful when combined with the -strparse
8469 option to examine the output of things like OCTET STRINGS.
8472 *) Make SSL library a little more fool-proof by not requiring any longer
8473 that SSL_set_{accept,connect}_state be called before
8474 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
8475 in many applications because usually everything *appeared* to work as
8476 intended anyway -- now it really works as intended).
8479 *) Move openssl.cnf out of lib/.
8482 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
8483 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
8484 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
8485 [Ralf S. Engelschall]
8487 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
8488 handle PKCS#7 enveloped data properly.
8489 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
8491 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
8492 copying pointers. The cert_st handling is changed by this in
8493 various ways (and thus what used to be known as ctx->default_cert
8494 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
8495 any longer when s->cert does not give us what we need).
8496 ssl_cert_instantiate becomes obsolete by this change.
8497 As soon as we've got the new code right (possibly it already is?),
8498 we have solved a couple of bugs of the earlier code where s->cert
8499 was used as if it could not have been shared with other SSL structures.
8501 Note that using the SSL API in certain dirty ways now will result
8502 in different behaviour than observed with earlier library versions:
8503 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
8504 does not influence s as it used to.
8506 In order to clean up things more thoroughly, inside SSL_SESSION
8507 we don't use CERT any longer, but a new structure SESS_CERT
8508 that holds per-session data (if available); currently, this is
8509 the peer's certificate chain and, for clients, the server's certificate
8510 and temporary key. CERT holds only those values that can have
8511 meaningful defaults in an SSL_CTX.
8514 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
8515 from the internal representation. Various PKCS#7 fixes: remove some
8516 evil casts and set the enc_dig_alg field properly based on the signing
8520 *) Allow PKCS#12 password to be set from the command line or the
8521 environment. Let 'ca' get its config file name from the environment
8522 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
8526 *) Allow certificate policies extension to use an IA5STRING for the
8527 organization field. This is contrary to the PKIX definition but
8528 VeriSign uses it and IE5 only recognises this form. Document 'x509'
8532 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
8533 without disallowing inline assembler and the like for non-pedantic builds.
8536 *) Support Borland C++ builder.
8537 [Janez Jere <jj@void.si>, modified by Ulf Möller]
8542 *) SHA-1 cleanups and performance enhancements.
8543 [Andy Polyakov <appro@fy.chalmers.se>]
8545 *) Sparc v8plus assembler for the bignum library.
8546 [Andy Polyakov <appro@fy.chalmers.se>]
8548 *) Accept any -xxx and +xxx compiler options in Configure.
8551 *) Update HPUX configuration.
8554 *) Add missing sk_<type>_unshift() function to safestack.h
8555 [Ralf S. Engelschall]
8557 *) New function SSL_CTX_use_certificate_chain_file that sets the
8558 "extra_cert"s in addition to the certificate. (This makes sense
8559 only for "PEM" format files, as chains as a whole are not
8563 *) Support verify_depth from the SSL API.
8564 x509_vfy.c had what can be considered an off-by-one-error:
8565 Its depth (which was not part of the external interface)
8566 was actually counting the number of certificates in a chain;
8567 now it really counts the depth.
8570 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
8571 instead of X509err, which often resulted in confusing error
8572 messages since the error codes are not globally unique
8573 (e.g. an alleged error in ssl3_accept when a certificate
8574 didn't match the private key).
8576 *) New function SSL_CTX_set_session_id_context that allows to set a default
8577 value (so that you don't need SSL_set_session_id_context for each
8578 connection using the SSL_CTX).
8581 *) OAEP decoding bug fix.
8584 *) Support INSTALL_PREFIX for package builders, as proposed by
8588 *) New Configure options "threads" and "no-threads". For systems
8589 where the proper compiler options are known (currently Solaris
8590 and Linux), "threads" is the default.
8593 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
8596 *) Install various scripts to $(OPENSSLDIR)/misc, not to
8597 $(INSTALLTOP)/bin -- they shouldn't clutter directories
8598 such as /usr/local/bin.
8601 *) "make linux-shared" to build shared libraries.
8602 [Niels Poppe <niels@netbox.org>]
8604 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
8607 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
8608 extension adding in x509 utility.
8611 *) Remove NOPROTO sections and error code comments.
8614 *) Partial rewrite of the DEF file generator to now parse the ANSI
8618 *) New Configure options --prefix=DIR and --openssldir=DIR.
8621 *) Complete rewrite of the error code script(s). It is all now handled
8622 by one script at the top level which handles error code gathering,
8623 header rewriting and C source file generation. It should be much better
8624 than the old method: it now uses a modified version of Ulf's parser to
8625 read the ANSI prototypes in all header files (thus the old K&R definitions
8626 aren't needed for error creation any more) and do a better job of
8627 translating function codes into names. The old 'ASN1 error code imbedded
8628 in a comment' is no longer necessary and it doesn't use .err files which
8629 have now been deleted. Also the error code call doesn't have to appear all
8630 on one line (which resulted in some large lines...).
8633 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
8636 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
8637 0 (which usually indicates a closed connection), but continue reading.
8640 *) Fix some race conditions.
8643 *) Add support for CRL distribution points extension. Add Certificate
8644 Policies and CRL distribution points documentation.
8647 *) Move the autogenerated header file parts to crypto/opensslconf.h.
8650 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
8651 8 of keying material. Merlin has also confirmed interop with this fix
8652 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
8653 [Merlin Hughes <merlin@baltimore.ie>]
8655 *) Fix lots of warnings.
8656 [Richard Levitte <levitte@stacken.kth.se>]
8658 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
8659 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
8660 [Richard Levitte <levitte@stacken.kth.se>]
8662 *) Fix problems with sizeof(long) == 8.
8663 [Andy Polyakov <appro@fy.chalmers.se>]
8665 *) Change functions to ANSI C.
8668 *) Fix typos in error codes.
8669 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
8671 *) Remove defunct assembler files from Configure.
8674 *) SPARC v8 assembler BIGNUM implementation.
8675 [Andy Polyakov <appro@fy.chalmers.se>]
8677 *) Support for Certificate Policies extension: both print and set.
8678 Various additions to support the r2i method this uses.
8681 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
8682 return a const string when you are expecting an allocated buffer.
8685 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
8686 types DirectoryString and DisplayText.
8689 *) Add code to allow r2i extensions to access the configuration database,
8690 add an LHASH database driver and add several ctx helper functions.
8693 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8694 fail when they extended the size of a BIGNUM.
8697 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8698 support typesafe stack.
8701 *) Fix typo in SSL_[gs]et_options().
8702 [Nils Frostberg <nils@medcom.se>]
8704 *) Delete various functions and files that belonged to the (now obsolete)
8705 old X509V3 handling code.
8708 *) New Configure option "rsaref".
8711 *) Don't auto-generate pem.h.
8714 *) Introduce type-safe ASN.1 SETs.
8717 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8718 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8720 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8721 that links with OpenSSL (well at least cause lots of warnings), but fear
8722 not: the conversion is trivial, and it eliminates loads of evil casts. A
8723 few STACKed things have been converted already. Feel free to convert more.
8724 In the fullness of time, I'll do away with the STACK type altogether.
8727 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8728 specified in <certfile> by updating the entry in the index.txt file.
8729 This way one no longer has to edit the index.txt file manually for
8730 revoking a certificate. The -revoke option does the gory details now.
8731 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8733 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8734 `-text' option at all and this way the `-noout -text' combination was
8735 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8736 [Ralf S. Engelschall]
8738 *) Make sure a corresponding plain text error message exists for the
8739 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8740 verify callback function determined that a certificate was revoked.
8741 [Ralf S. Engelschall]
8743 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8744 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8745 all available cipers including rc5, which was forgotten until now.
8746 In order to let the testing shell script know which algorithms
8747 are available, a new (up to now undocumented) command
8748 "openssl list-cipher-commands" is used.
8751 *) Bugfix: s_client occasionally would sleep in select() when
8752 it should have checked SSL_pending() first.
8755 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8756 the raw DSA values prior to ASN.1 encoding.
8759 *) Tweaks to Configure
8760 [Niels Poppe <niels@netbox.org>]
8762 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8766 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8769 *) New config option to avoid instructions that are illegal on the 80386.
8770 The default code is faster, but requires at least a 486.
8773 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8774 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8775 same as SSL2_VERSION anyway.
8778 *) New "-showcerts" option for s_client.
8781 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8782 application. Various cleanups and fixes.
8785 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8786 modify error routines to work internally. Add error codes and PBE init
8787 to library startup routines.
8790 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8791 packing functions to asn1 and evp. Changed function names and error
8792 codes along the way.
8795 *) PKCS12 integration: and so it begins... First of several patches to
8796 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8797 objects to objects.h
8800 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8801 and display support for Thawte strong extranet extension.
8804 *) Add LinuxPPC support.
8805 [Jeff Dubrule <igor@pobox.org>]
8807 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8808 bn_div_words in alpha.s.
8809 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8811 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8812 OAEP isn't supported when OpenSSL is built with RSAref.
8813 [Ulf Moeller <ulf@fitug.de>]
8815 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8816 so they no longer are missing under -DNOPROTO.
8817 [Soren S. Jorvang <soren@t.dk>]
8820 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8822 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8823 doesn't work when the session is reused. Coming soon!
8826 *) Fix a security hole, that allows sessions to be reused in the wrong
8827 context thus bypassing client cert protection! All software that uses
8828 client certs and session caches in multiple contexts NEEDS PATCHING to
8829 allow session reuse! A fuller solution is in the works.
8830 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8832 *) Some more source tree cleanups (removed obsolete files
8833 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8834 permission on "config" script to be executable) and a fix for the INSTALL
8836 [Ulf Moeller <ulf@fitug.de>]
8838 *) Remove some legacy and erroneous uses of malloc, free instead of
8840 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8842 *) Make rsa_oaep_test return non-zero on error.
8843 [Ulf Moeller <ulf@fitug.de>]
8845 *) Add support for native Solaris shared libraries. Configure
8846 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8847 if someone would make that last step automatic.
8848 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8850 *) ctx_size was not built with the right compiler during "make links". Fixed.
8853 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8854 except NULL ciphers". This means the default cipher list will no longer
8855 enable NULL ciphers. They need to be specifically enabled e.g. with
8856 the string "DEFAULT:eNULL".
8859 *) Fix to RSA private encryption routines: if p < q then it would
8860 occasionally produce an invalid result. This will only happen with
8861 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8864 *) Be less restrictive and allow also `perl util/perlpath.pl
8865 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8866 because this way one can also use an interpreter named `perl5' (which is
8867 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8868 installed as `perl').
8869 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8871 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8872 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8874 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8875 advapi32.lib to Win32 build and change the pem test comparision
8876 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8877 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8878 and crypto/des/ede_cbcm_enc.c.
8881 *) DES quad checksum was broken on big-endian architectures. Fixed.
8884 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8885 Win32 test batch file so it (might) work again. The Win32 test batch file
8886 is horrible: I feel ill....
8889 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8890 in e_os.h. Audit of header files to check ANSI and non ANSI
8891 sections: 10 functions were absent from non ANSI section and not exported
8892 from Windows DLLs. Fixed up libeay.num for new functions.
8895 *) Make `openssl version' output lines consistent.
8896 [Ralf S. Engelschall]
8898 *) Fix Win32 symbol export lists for BIO functions: Added
8899 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8900 to ms/libeay{16,32}.def.
8901 [Ralf S. Engelschall]
8903 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8904 fine under Unix and passes some trivial tests I've now added. But the
8905 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8906 added to make sure no one expects that this stuff really works in the
8907 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8908 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8910 [Ralf S. Engelschall]
8912 *) Fix the generation of two part addresses in perl.
8913 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8915 *) Add config entry for Linux on MIPS.
8916 [John Tobey <jtobey@channel1.com>]
8918 *) Make links whenever Configure is run, unless we are on Windoze.
8921 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8922 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8926 *) Add a useful kludge to allow package maintainers to specify compiler and
8927 other platforms details on the command line without having to patch the
8928 Configure script everytime: One now can use ``perl Configure
8929 <id>:<details>'', i.e. platform ids are allowed to have details appended
8930 to them (seperated by colons). This is treated as there would be a static
8931 pre-configured entry in Configure's %table under key <id> with value
8932 <details> and ``perl Configure <id>'' is called. So, when you want to
8933 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8934 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8935 now, which overrides the FreeBSD-elf entry on-the-fly.
8936 [Ralf S. Engelschall]
8938 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
8941 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
8942 on the `perl Configure ...' command line. This way one can compile
8943 OpenSSL libraries with Position Independent Code (PIC) which is needed
8944 for linking it into DSOs.
8945 [Ralf S. Engelschall]
8947 *) Remarkably, export ciphers were totally broken and no-one had noticed!
8951 *) Cleaned up the LICENSE document: The official contact for any license
8952 questions now is the OpenSSL core team under openssl-core@openssl.org.
8953 And add a paragraph about the dual-license situation to make sure people
8954 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
8955 to the OpenSSL toolkit.
8956 [Ralf S. Engelschall]
8958 *) General source tree makefile cleanups: Made `making xxx in yyy...'
8959 display consistent in the source tree and replaced `/bin/rm' by `rm'.
8960 Additonally cleaned up the `make links' target: Remove unnecessary
8961 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
8962 to speed processing and no longer clutter the display with confusing
8963 stuff. Instead only the actually done links are displayed.
8964 [Ralf S. Engelschall]
8966 *) Permit null encryption ciphersuites, used for authentication only. It used
8967 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
8968 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
8972 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
8973 signed attributes when verifying signatures (this would break them),
8974 the detached data encoding was wrong and public keys obtained using
8975 X509_get_pubkey() weren't freed.
8978 *) Add text documentation for the BUFFER functions. Also added a work around
8979 to a Win95 console bug. This was triggered by the password read stuff: the
8980 last character typed gets carried over to the next fread(). If you were
8981 generating a new cert request using 'req' for example then the last
8982 character of the passphrase would be CR which would then enter the first
8986 *) Added the new `Includes OpenSSL Cryptography Software' button as
8987 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
8988 button and can be used by applications based on OpenSSL to show the
8989 relationship to the OpenSSL project.
8990 [Ralf S. Engelschall]
8992 *) Remove confusing variables in function signatures in files
8993 ssl/ssl_lib.c and ssl/ssl.h.
8994 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8996 *) Don't install bss_file.c under PREFIX/include/
8997 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8999 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9000 functions that return function pointers and has support for NT specific
9001 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9002 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9003 unsigned to signed types: this was killing the Win32 compile.
9006 *) Add new certificate file to stack functions,
9007 SSL_add_dir_cert_subjects_to_stack() and
9008 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9009 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9010 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9011 This means that Apache-SSL and similar packages don't have to mess around
9012 to add as many CAs as they want to the preferred list.
9015 *) Experiment with doxygen documentation. Currently only partially applied to
9017 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9018 openssl.doxy as the configuration file.
9021 *) Get rid of remaining C++-style comments which strict C compilers hate.
9022 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9024 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9025 compiled in by default: it has problems with large keys.
9028 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9029 DH private keys and/or callback functions which directly correspond to
9030 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9031 is needed for applications which have to configure certificates on a
9032 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9034 For the RSA certificate situation is makes no difference, but
9035 for the DSA certificate situation this fixes the "no shared cipher"
9036 problem where the OpenSSL cipher selection procedure failed because the
9037 temporary keys were not overtaken from the context and the API provided
9038 no way to reconfigure them.
9039 The new functions now let applications reconfigure the stuff and they
9040 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9041 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9042 non-public-API function ssl_cert_instantiate() is used as a helper
9043 function and also to reduce code redundancy inside ssl_rsa.c.
9044 [Ralf S. Engelschall]
9046 *) Move s_server -dcert and -dkey options out of the undocumented feature
9047 area because they are useful for the DSA situation and should be
9048 recognized by the users.
9049 [Ralf S. Engelschall]
9051 *) Fix the cipher decision scheme for export ciphers: the export bits are
9052 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9053 SSL_EXP_MASK. So, the original variable has to be used instead of the
9054 already masked variable.
9055 [Richard Levitte <levitte@stacken.kth.se>]
9057 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9058 [Richard Levitte <levitte@stacken.kth.se>]
9060 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9061 from `int' to `unsigned int' because it's a length and initialized by
9062 EVP_DigestFinal() which expects an `unsigned int *'.
9063 [Richard Levitte <levitte@stacken.kth.se>]
9065 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9066 script. Instead use the usual Shell->Perl transition trick.
9067 [Ralf S. Engelschall]
9069 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9070 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9071 -noout -modulus' as it's already the case for `openssl rsa -noout
9072 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9073 currently the public key is printed (a decision which was already done by
9074 `openssl dsa -modulus' in the past) which serves a similar purpose.
9075 Additionally the NO_RSA no longer completely removes the whole -modulus
9076 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9078 [Ralf S. Engelschall]
9080 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9081 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9082 [Arne Ansper <arne@ats.cyber.ee>]
9084 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9085 to be added. Now both 'req' and 'ca' can use new objects defined in the
9089 *) Add cool BIO that does syslog (or event log on NT).
9090 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9092 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9093 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9094 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9095 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9098 *) Add preliminary config info for new extension code.
9101 *) Make RSA_NO_PADDING really use no padding.
9102 [Ulf Moeller <ulf@fitug.de>]
9104 *) Generate errors when private/public key check is done.
9107 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9108 for some CRL extensions and new objects added.
9111 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9112 key usage extension and fuller support for authority key id.
9115 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9116 padding method for RSA, which is recommended for new applications in PKCS
9117 #1 v2.0 (RFC 2437, October 1998).
9118 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9119 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9120 against Bleichbacher's attack on RSA.
9121 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9124 *) Updates to the new SSL compression code
9125 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9127 *) Fix so that the version number in the master secret, when passed
9128 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9129 (because the server will not accept higher), that the version number
9130 is 0x03,0x01, not 0x03,0x00
9131 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9133 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9134 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9135 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9138 *) Support for RAW extensions where an arbitrary extension can be
9139 created by including its DER encoding. See apps/openssl.cnf for
9143 *) Make sure latest Perl versions don't interpret some generated C array
9144 code as Perl array code in the crypto/err/err_genc.pl script.
9145 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9147 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9148 not many people have the assembler. Various Win32 compilation fixes and
9149 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9153 *) Modify configure script 'Configure' to automatically create crypto/date.h
9154 file under Win32 and also build pem.h from pem.org. New script
9155 util/mkfiles.pl to create the MINFO file on environments that can't do a
9156 'make files': perl util/mkfiles.pl >MINFO should work.
9159 *) Major rework of DES function declarations, in the pursuit of correctness
9160 and purity. As a result, many evil casts evaporated, and some weirdness,
9161 too. You may find this causes warnings in your code. Zapping your evil
9162 casts will probably fix them. Mostly.
9165 *) Fix for a typo in asn1.h. Bug fix to object creation script
9166 obj_dat.pl. It considered a zero in an object definition to mean
9167 "end of object": none of the objects in objects.h have any zeros
9168 so it wasn't spotted.
9169 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9171 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9172 Masking (CBCM). In the absence of test vectors, the best I have been able
9173 to do is check that the decrypt undoes the encrypt, so far. Send me test
9174 vectors if you have them.
9177 *) Correct calculation of key length for export ciphers (too much space was
9178 allocated for null ciphers). This has not been tested!
9181 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9182 message is now correct (it understands "crypto" and "ssl" on its
9183 command line). There is also now an "update" option. This will update
9184 the util/ssleay.num and util/libeay.num files with any new functions.
9186 perl util/mkdef.pl crypto ssl update
9187 it will update them.
9190 *) Overhauled the Perl interface (perl/*):
9191 - ported BN stuff to OpenSSL's different BN library
9192 - made the perl/ source tree CVS-aware
9193 - renamed the package from SSLeay to OpenSSL (the files still contain
9194 their history because I've copied them in the repository)
9195 - removed obsolete files (the test scripts will be replaced
9196 by better Test::Harness variants in the future)
9197 [Ralf S. Engelschall]
9199 *) First cut for a very conservative source tree cleanup:
9200 1. merge various obsolete readme texts into doc/ssleay.txt
9201 where we collect the old documents and readme texts.
9202 2. remove the first part of files where I'm already sure that we no
9203 longer need them because of three reasons: either they are just temporary
9204 files which were left by Eric or they are preserved original files where
9205 I've verified that the diff is also available in the CVS via "cvs diff
9206 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9207 the crypto/md/ stuff).
9208 [Ralf S. Engelschall]
9210 *) More extension code. Incomplete support for subject and issuer alt
9211 name, issuer and authority key id. Change the i2v function parameters
9212 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9213 what that's for :-) Fix to ASN1 macro which messed up
9214 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9217 *) Preliminary support for ENUMERATED type. This is largely copied from the
9221 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9222 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9224 *) Make sure `make rehash' target really finds the `openssl' program.
9225 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9227 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9228 like to hear about it if this slows down other processors.
9231 *) Add CygWin32 platform information to Configure script.
9232 [Alan Batie <batie@aahz.jf.intel.com>]
9234 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9235 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9237 *) New program nseq to manipulate netscape certificate sequences
9240 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9244 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9245 but the BN code had some problems that would cause failures when
9246 doing certificate verification and some other functions.
9247 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9249 *) Add ASN1 and PEM code to support netscape certificate sequences.
9252 *) Add ASN1 and PEM code to support netscape certificate sequences.
9255 *) Add several PKIX and private extended key usage OIDs.
9258 *) Modify the 'ca' program to handle the new extension code. Modify
9259 openssl.cnf for new extension format, add comments.
9262 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9263 and add a sample to openssl.cnf so req -x509 now adds appropriate
9267 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9268 error code, add initial support to X509_print() and x509 application.
9271 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9272 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9273 stuff is currently isolated and isn't even compiled yet.
9276 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9277 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9278 Removed the versions check from X509 routines when loading extensions:
9279 this allows certain broken certificates that don't set the version
9280 properly to be processed.
9283 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9284 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9285 can still be regenerated with "make depend".
9288 *) Spelling mistake in C version of CAST-128.
9289 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9291 *) Changes to the error generation code. The perl script err-code.pl
9292 now reads in the old error codes and retains the old numbers, only
9293 adding new ones if necessary. It also only changes the .err files if new
9294 codes are added. The makefiles have been modified to only insert errors
9295 when needed (to avoid needlessly modifying header files). This is done
9296 by only inserting errors if the .err file is newer than the auto generated
9297 C file. To rebuild all the error codes from scratch (the old behaviour)
9298 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9299 or delete all the .err files.
9302 *) CAST-128 was incorrectly implemented for short keys. The C version has
9303 been fixed, but is untested. The assembler versions are also fixed, but
9304 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9305 to regenerate it if needed.
9306 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9307 Hagino <itojun@kame.net>]
9309 *) File was opened incorrectly in randfile.c.
9310 [Ulf Möller <ulf@fitug.de>]
9312 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9313 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9314 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9315 al: it's just almost always a UTCTime. Note this patch adds new error
9316 codes so do a "make errors" if there are problems.
9319 *) Correct Linux 1 recognition in config.
9320 [Ulf Möller <ulf@fitug.de>]
9322 *) Remove pointless MD5 hash when using DSA keys in ca.
9323 [Anonymous <nobody@replay.com>]
9325 *) Generate an error if given an empty string as a cert directory. Also
9326 generate an error if handed NULL (previously returned 0 to indicate an
9327 error, but didn't set one).
9328 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9330 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9333 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9334 parameters. This was causing a warning which killed off the Win32 compile.
9337 *) Remove C++ style comments from crypto/bn/bn_local.h.
9338 [Neil Costigan <neil.costigan@celocom.com>]
9340 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9341 based on a text string, looking up short and long names and finally
9342 "dot" format. The "dot" format stuff didn't work. Added new function
9343 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9344 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9345 OID is not part of the table.
9348 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9349 X509_LOOKUP_by_alias().
9352 *) Sort openssl functions by name.
9355 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9356 encryption from sample DSA keys (in case anyone is interested the password
9360 *) Make _all_ *_free functions accept a NULL pointer.
9361 [Frans Heymans <fheymans@isaserver.be>]
9363 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9365 [Anonymous <nobody@replay.com>]
9367 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9368 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9370 *) Don't blow it for numeric -newkey arguments to apps/req.
9371 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9373 *) Temp key "for export" tests were wrong in s3_srvr.c.
9374 [Anonymous <nobody@replay.com>]
9376 *) Add prototype for temp key callback functions
9377 SSL_CTX_set_tmp_{rsa,dh}_callback().
9380 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9381 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9384 *) X509_name_add_entry() freed the wrong thing after an error.
9385 [Arne Ansper <arne@ats.cyber.ee>]
9387 *) rsa_eay.c would attempt to free a NULL context.
9388 [Arne Ansper <arne@ats.cyber.ee>]
9390 *) BIO_s_socket() had a broken should_retry() on Windoze.
9391 [Arne Ansper <arne@ats.cyber.ee>]
9393 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9394 [Arne Ansper <arne@ats.cyber.ee>]
9396 *) Make sure the already existing X509_STORE->depth variable is initialized
9397 in X509_STORE_new(), but document the fact that this variable is still
9398 unused in the certificate verification process.
9399 [Ralf S. Engelschall]
9401 *) Fix the various library and apps files to free up pkeys obtained from
9402 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9405 *) Fix reference counting in X509_PUBKEY_get(). This makes
9406 demos/maurice/example2.c work, amongst others, probably.
9407 [Steve Henson and Ben Laurie]
9409 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9410 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9411 are no longer created. This way we have a single and consistent command
9412 line interface `openssl <command>', similar to `cvs <command>'.
9413 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9415 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9416 BIT STRING wrapper always have zero unused bits.
9419 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
9422 *) Make the top-level INSTALL documentation easier to understand.
9425 *) Makefiles updated to exit if an error occurs in a sub-directory
9426 make (including if user presses ^C) [Paul Sutton]
9428 *) Make Montgomery context stuff explicit in RSA data structure.
9431 *) Fix build order of pem and err to allow for generated pem.h.
9434 *) Fix renumbering bug in X509_NAME_delete_entry().
9437 *) Enhanced the err-ins.pl script so it makes the error library number
9438 global and can add a library name. This is needed for external ASN1 and
9439 other error libraries.
9442 *) Fixed sk_insert which never worked properly.
9445 *) Fix ASN1 macros so they can handle indefinite length construted
9446 EXPLICIT tags. Some non standard certificates use these: they can now
9450 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
9451 into a single doc/ssleay.txt bundle. This way the information is still
9452 preserved but no longer messes up this directory. Now it's new room for
9453 the new set of documenation files.
9454 [Ralf S. Engelschall]
9456 *) SETs were incorrectly DER encoded. This was a major pain, because they
9457 shared code with SEQUENCEs, which aren't coded the same. This means that
9458 almost everything to do with SETs or SEQUENCEs has either changed name or
9459 number of arguments.
9460 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
9462 *) Fix test data to work with the above.
9465 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
9466 was already fixed by Eric for 0.9.1 it seems.
9467 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
9469 *) Autodetect FreeBSD3.
9472 *) Fix various bugs in Configure. This affects the following platforms:
9476 unixware-2.0-pentium
9480 *) Eliminate generated files from CVS. Reorder tests to regenerate files
9481 before they are needed.
9484 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
9488 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
9490 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
9491 changed SSLeay to OpenSSL in version strings.
9492 [Ralf S. Engelschall]
9494 *) Some fixups to the top-level documents.
9497 *) Fixed the nasty bug where rsaref.h was not found under compile-time
9498 because the symlink to include/ was missing.
9499 [Ralf S. Engelschall]
9501 *) Incorporated the popular no-RSA/DSA-only patches
9502 which allow to compile a RSA-free SSLeay.
9503 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
9505 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
9506 when "ssleay" is still not found.
9507 [Ralf S. Engelschall]
9509 *) Added more platforms to Configure: Cray T3E, HPUX 11,
9510 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
9512 *) Updated the README file.
9513 [Ralf S. Engelschall]
9515 *) Added various .cvsignore files in the CVS repository subdirs
9516 to make a "cvs update" really silent.
9517 [Ralf S. Engelschall]
9519 *) Recompiled the error-definition header files and added
9520 missing symbols to the Win32 linker tables.
9521 [Ralf S. Engelschall]
9523 *) Cleaned up the top-level documents;
9524 o new files: CHANGES and LICENSE
9525 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
9526 o merged COPYRIGHT into LICENSE
9527 o removed obsolete TODO file
9528 o renamed MICROSOFT to INSTALL.W32
9529 [Ralf S. Engelschall]
9531 *) Removed dummy files from the 0.9.1b source tree:
9532 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
9533 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
9534 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
9535 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
9536 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
9537 [Ralf S. Engelschall]
9539 *) Added various platform portability fixes.
9542 *) The Genesis of the OpenSSL rpject:
9543 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
9544 Young and Tim J. Hudson created while they were working for C2Net until
9546 [The OpenSSL Project]
9549 Changes between 0.9.0b and 0.9.1b [not released]
9551 *) Updated a few CA certificates under certs/
9554 *) Changed some BIGNUM api stuff.
9557 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
9558 DGUX x86, Linux Alpha, etc.
9561 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
9562 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
9566 *) Add -strparse option to asn1pars program which parses nested
9568 [Dr Stephen Henson <shenson@bigfoot.com>]
9570 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
9573 *) DSA fix for "ca" program.
9576 *) Added "-genkey" option to "dsaparam" program.
9579 *) Added RIPE MD160 (rmd160) message digest.
9582 *) Added -a (all) option to "ssleay version" command.
9585 *) Added PLATFORM define which is the id given to Configure.
9588 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
9591 *) Extended the ASN.1 parser routines.
9594 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
9597 *) Added a BN_CTX to the BN library.
9600 *) Fixed the weak key values in DES library
9603 *) Changed API in EVP library for cipher aliases.
9606 *) Added support for RC2/64bit cipher.
9609 *) Converted the lhash library to the crypto/mem.c functions.
9612 *) Added more recognized ASN.1 object ids.
9615 *) Added more RSA padding checks for SSL/TLS.
9618 *) Added BIO proxy/filter functionality.
9621 *) Added extra_certs to SSL_CTX which can be used
9622 send extra CA certificates to the client in the CA cert chain sending
9623 process. It can be configured with SSL_CTX_add_extra_chain_cert().
9626 *) Now Fortezza is denied in the authentication phase because
9627 this is key exchange mechanism is not supported by SSLeay at all.
9630 *) Additional PKCS1 checks.
9633 *) Support the string "TLSv1" for all TLS v1 ciphers.
9636 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
9637 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
9640 *) Fixed a few memory leaks.
9643 *) Fixed various code and comment typos.
9646 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
9647 bytes sent in the client random.
9648 [Edward Bishop <ebishop@spyglass.com>]