5 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
7 *) New -sigopt option to the ca, req and x509 utilities. Additional
8 signature parameters can be passed using this option and in
12 *) Add RSA PSS signing function. This will generate and set the
13 appropriate AlgorithmIdentifiers for PSS based on those in the
14 corresponding EVP_MD_CTX structure. No application support yet.
17 *) Support for companion algorithm specific ASN1 signing routines.
18 New function ASN1_item_sign_ctx() signs a pre-initialised
19 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
20 the appropriate parameters.
23 *) Add new algorithm specific ASN1 verification initialisation function
24 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
25 handling will be the same no matter what EVP_PKEY_METHOD is used.
26 Add a PSS handler to support verification of PSS signatures: checked
27 against a number of sample certificates.
30 *) Add signature printing for PSS. Add PSS OIDs.
31 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
33 *) Add algorithm specific signature printing. An individual ASN1 method
34 can now print out signatures instead of the standard hex dump.
36 More complex signatures (e.g. PSS) can print out more meaningful
37 information. Include DSA version that prints out the signature
41 *) Password based recipient info support for CMS library: implementing
45 *) Split password based encryption into PBES2 and PBKDF2 functions. This
46 neatly separates the code into cipher and PBE sections and is required
47 for some algorithms that split PBES2 into separate pieces (such as
51 *) Session-handling fixes:
52 - Fix handling of connections that are resuming with a session ID,
53 but also support Session Tickets.
54 - Fix a bug that suppressed issuing of a new ticket if the client
55 presented a ticket with an expired session.
56 - Try to set the ticket lifetime hint to something reasonable.
57 - Make tickets shorter by excluding irrelevant information.
58 - On the client side, don't ignore renewed tickets.
59 [Adam Langley, Bodo Moeller (Google)]
61 *) Fix PSK session representation.
64 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
66 This work was sponsored by Intel.
69 *) Add GCM support to TLS library. Some custom code is needed to split
70 the IV between the fixed (from PRF) and explicit (from TLS record)
71 portions. This adds all GCM ciphersuites supported by RFC5288 and
72 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
73 add a special AESGCM string for GCM only.
76 *) Expand range of ctrls for AES GCM. Permit setting invocation
77 field on decrypt and retrieval of invocation field only on encrypt.
80 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
81 As required by RFC5289 these ciphersuites cannot be used if for
82 versions of TLS earlier than 1.2.
85 *) For FIPS capable OpenSSL interpret a NULL default public key method
86 as unset and return the appopriate default but do *not* set the default.
87 This means we can return the appopriate method in applications that
88 swicth between FIPS and non-FIPS modes.
91 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
92 ENGINE is used then we cannot handle that in the FIPS module so we
93 keep original code iff non-FIPS operations are allowed.
96 *) Add -attime option to openssl verify.
97 [Peter Eckersley <pde@eff.org> and Ben Laurie]
99 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
102 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
103 FIPS EC methods unconditionally for now.
106 *) New build option no-ec2m to disable characteristic 2 code.
109 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
110 all cases can be covered as some introduce binary incompatibilities.
113 *) Redirect RSA operations to FIPS module including keygen,
114 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
117 *) Add similar low level API blocking to ciphers.
120 *) Low level digest APIs are not approved in FIPS mode: any attempt
121 to use these will cause a fatal error. Applications that *really* want
122 to use them can use the private_* version instead.
125 *) Redirect cipher operations to FIPS module for FIPS builds.
128 *) Redirect digest operations to FIPS module for FIPS builds.
131 *) Update build system to add "fips" flag which will link in fipscanister.o
132 for static and shared library builds embedding a signature if needed.
135 *) Output TLS supported curves in preference order instead of numerical
136 order. This is currently hardcoded for the highest order curves first.
137 This should be configurable so applications can judge speed vs strength.
140 *) Add TLS v1.2 server support for client authentication.
143 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
147 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
148 FIPS modules versions.
151 *) Add TLS v1.2 client side support for client authentication. Keep cache
152 of handshake records longer as we don't know the hash algorithm to use
153 until after the certificate request message is received.
156 *) Initial TLS v1.2 client support. Add a default signature algorithms
157 extension including all the algorithms we support. Parse new signature
158 format in client key exchange. Relax some ECC signing restrictions for
159 TLS v1.2 as indicated in RFC5246.
162 *) Add server support for TLS v1.2 signature algorithms extension. Switch
163 to new signature format when needed using client digest preference.
164 All server ciphersuites should now work correctly in TLS v1.2. No client
165 support yet and no support for client certificates.
168 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
169 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
170 ciphersuites. At present only RSA key exchange ciphersuites work with
171 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
172 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
173 and version checking.
176 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
177 with this defined it will not be affected by any changes to ssl internal
178 structures. Add several utility functions to allow openssl application
179 to work with OPENSSL_NO_SSL_INTERN defined.
183 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
185 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
188 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
189 elliptic curve NIST-P224 with constant-time single point multiplication on
190 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
191 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
192 flexible implementations).
194 The implementation requires support for the nonstandard type __uint128_t,
195 and so is disabled by default. To include this in your build of OpenSSL,
196 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
197 and run "make depend" (or "make update").
198 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
200 *) Permit abbreviated handshakes when renegotiating using the function
201 SSL_renegotiate_abbreviated().
202 [Robin Seggelmann <seggelmann@fh-muenster.de>]
204 *) Add call to ENGINE_register_all_complete() to
205 ENGINE_load_builtin_engines(), so some implementations get used
206 automatically instead of needing explicit application support.
209 *) Add support for TLS key exporter as described in RFC5705.
210 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
212 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
213 a few changes are required:
215 Add SSL_OP_NO_TLSv1_1 flag.
217 Update version checking logic to handle version 1.1.
218 Add explicit IV handling (ported from DTLS code).
219 Add command line options to s_client/s_server.
222 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
224 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
225 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
226 [Kaspar Brand <ossl@velox.ch>]
228 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
229 for multi-threaded use of ECDH. (CVE-2011-3210)
230 [Adam Langley (Google)]
232 *) Fix x509_name_ex_d2i memory leak on bad inputs.
235 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
236 signature public key algorithm by using OID xref utilities instead.
237 Before this you could only use some ECC ciphersuites with SHA1 only.
240 *) Add protection against ECDSA timing attacks as mentioned in the paper
241 by Billy Bob Brumley and Nicola Tuveri, see:
243 http://eprint.iacr.org/2011/232.pdf
245 [Billy Bob Brumley and Nicola Tuveri]
247 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
249 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
250 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
252 *) Fix bug in string printing code: if *any* escaping is enabled we must
253 escape the escape character (backslash) or the resulting string is
257 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
259 *) Disable code workaround for ancient and obsolete Netscape browsers
260 and servers: an attacker can use it in a ciphersuite downgrade attack.
261 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
264 *) Fixed J-PAKE implementation error, originally discovered by
265 Sebastien Martini, further info and confirmation from Stefan
266 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
269 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
271 *) Fix extension code to avoid race conditions which can result in a buffer
272 overrun vulnerability: resumed sessions must not be modified as they can
273 be shared by multiple threads. CVE-2010-3864
276 *) Fix WIN32 build system to correctly link an ENGINE directory into
280 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
282 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
284 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
286 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
288 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
289 context. The operation can be customised via the ctrl mechanism in
290 case ENGINEs want to include additional functionality.
293 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
296 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
297 output hashes compatible with older versions of OpenSSL.
298 [Willy Weisz <weisz@vcpc.univie.ac.at>]
300 *) Fix compression algorithm handling: if resuming a session use the
301 compression algorithm of the resumed session instead of determining
302 it from client hello again. Don't allow server to change algorithm.
305 *) Add load_crls() function to apps tidying load_certs() too. Add option
306 to verify utility to allow additional CRLs to be included.
309 *) Update OCSP request code to permit adding custom headers to the request:
310 some responders need this.
313 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
315 [Julia Lawall <julia@diku.dk>]
317 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
318 needlessly dereferenced structures, used obsolete functions and
319 didn't handle all updated verify codes correctly.
322 *) Disable MD2 in the default configuration.
325 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
326 indicate the initial BIO being pushed or popped. This makes it possible
327 to determine whether the BIO is the one explicitly called or as a result
328 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
329 it handles reference counts correctly and doesn't zero out the I/O bio
330 when it is not being explicitly popped. WARNING: applications which
331 included workarounds for the old buggy behaviour will need to be modified
332 or they could free up already freed BIOs.
335 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
336 renaming to all platforms (within the 0.9.8 branch, this was
337 done conditionally on Netware platforms to avoid a name clash).
338 [Guenter <lists@gknw.net>]
340 *) Add ECDHE and PSK support to DTLS.
341 [Michael Tuexen <tuexen@fh-muenster.de>]
343 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
347 *) Add "missing" function EVP_MD_flags() (without this the only way to
348 retrieve a digest flags is by accessing the structure directly. Update
349 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
350 or cipher is registered as in the "from" argument. Print out all
351 registered digests in the dgst usage message instead of manually
352 attempting to work them out.
355 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
356 this allows the use of compression and extensions. Change default cipher
357 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
358 by default unless an application cipher string requests it.
361 *) Alter match criteria in PKCS12_parse(). It used to try to use local
362 key ids to find matching certificates and keys but some PKCS#12 files
363 don't follow the (somewhat unwritten) rules and this strategy fails.
364 Now just gather all certificates together and the first private key
365 then look for the first certificate that matches the key.
368 *) Support use of registered digest and cipher names for dgst and cipher
369 commands instead of having to add each one as a special case. So now
376 openssl dgst -sha256 foo
378 and this works for ENGINE based algorithms too.
382 *) Update Gost ENGINE to support parameter files.
383 [Victor B. Wagner <vitus@cryptocom.ru>]
385 *) Support GeneralizedTime in ca utility.
386 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
388 *) Enhance the hash format used for certificate directory links. The new
389 form uses the canonical encoding (meaning equivalent names will work
390 even if they aren't identical) and uses SHA1 instead of MD5. This form
391 is incompatible with the older format and as a result c_rehash should
392 be used to rebuild symbolic links.
395 *) Make PKCS#8 the default write format for private keys, replacing the
396 traditional format. This form is standardised, more secure and doesn't
397 include an implicit MD5 dependency.
400 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
401 committed to OpenSSL should pass this lot as a minimum.
404 *) Add session ticket override functionality for use by EAP-FAST.
405 [Jouni Malinen <j@w1.fi>]
407 *) Modify HMAC functions to return a value. Since these can be implemented
408 in an ENGINE errors can occur.
411 *) Type-checked OBJ_bsearch_ex.
414 *) Type-checked OBJ_bsearch. Also some constification necessitated
415 by type-checking. Still to come: TXT_DB, bsearch(?),
416 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
420 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
421 seconds to a tm structure directly, instead of going through OS
422 specific date routines. This avoids any issues with OS routines such
423 as the year 2038 bug. New *_adj() functions for ASN1 time structures
424 and X509_time_adj_ex() to cover the extended range. The existing
425 X509_time_adj() is still usable and will no longer have any date issues.
428 *) Delta CRL support. New use deltas option which will attempt to locate
429 and search any appropriate delta CRLs available.
431 This work was sponsored by Google.
434 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
435 code and add additional score elements. Validate alternate CRL paths
436 as part of the CRL checking and indicate a new error "CRL path validation
437 error" in this case. Applications wanting additional details can use
438 the verify callback and check the new "parent" field. If this is not
439 NULL CRL path validation is taking place. Existing applications wont
440 see this because it requires extended CRL support which is off by
443 This work was sponsored by Google.
446 *) Support for freshest CRL extension.
448 This work was sponsored by Google.
451 *) Initial indirect CRL support. Currently only supported in the CRLs
452 passed directly and not via lookup. Process certificate issuer
453 CRL entry extension and lookup CRL entries by bother issuer name
454 and serial number. Check and process CRL issuer entry in IDP extension.
456 This work was sponsored by Google.
459 *) Add support for distinct certificate and CRL paths. The CRL issuer
460 certificate is validated separately in this case. Only enabled if
461 an extended CRL support flag is set: this flag will enable additional
462 CRL functionality in future.
464 This work was sponsored by Google.
467 *) Add support for policy mappings extension.
469 This work was sponsored by Google.
472 *) Fixes to pathlength constraint, self issued certificate handling,
473 policy processing to align with RFC3280 and PKITS tests.
475 This work was sponsored by Google.
478 *) Support for name constraints certificate extension. DN, email, DNS
479 and URI types are currently supported.
481 This work was sponsored by Google.
484 *) To cater for systems that provide a pointer-based thread ID rather
485 than numeric, deprecate the current numeric thread ID mechanism and
486 replace it with a structure and associated callback type. This
487 mechanism allows a numeric "hash" to be extracted from a thread ID in
488 either case, and on platforms where pointers are larger than 'long',
489 mixing is done to help ensure the numeric 'hash' is usable even if it
490 can't be guaranteed unique. The default mechanism is to use "&errno"
491 as a pointer-based thread ID to distinguish between threads.
493 Applications that want to provide their own thread IDs should now use
494 CRYPTO_THREADID_set_callback() to register a callback that will call
495 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
497 Note that ERR_remove_state() is now deprecated, because it is tied
498 to the assumption that thread IDs are numeric. ERR_remove_state(0)
499 to free the current thread's error state should be replaced by
500 ERR_remove_thread_state(NULL).
502 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
503 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
504 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
505 application was previously providing a numeric thread callback that
506 was inappropriate for distinguishing threads, then uniqueness might
507 have been obtained with &errno that happened immediately in the
508 intermediate development versions of OpenSSL; this is no longer the
509 case, the numeric thread callback will now override the automatic use
511 [Geoff Thorpe, with help from Bodo Moeller]
513 *) Initial support for different CRL issuing certificates. This covers a
514 simple case where the self issued certificates in the chain exist and
515 the real CRL issuer is higher in the existing chain.
517 This work was sponsored by Google.
520 *) Removed effectively defunct crypto/store from the build.
523 *) Revamp of STACK to provide stronger type-checking. Still to come:
524 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
525 ASN1_STRING, CONF_VALUE.
528 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
529 RAM on SSL connections. This option can save about 34k per idle SSL.
532 *) Revamp of LHASH to provide stronger type-checking. Still to come:
533 STACK, TXT_DB, bsearch, qsort.
536 *) Initial support for Cryptographic Message Syntax (aka CMS) based
537 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
538 support for data, signedData, compressedData, digestedData and
539 encryptedData, envelopedData types included. Scripts to check against
540 RFC4134 examples draft and interop and consistency checks of many
541 content types and variants.
544 *) Add options to enc utility to support use of zlib compression BIO.
547 *) Extend mk1mf to support importing of options and assembly language
548 files from Configure script, currently only included in VC-WIN32.
549 The assembly language rules can now optionally generate the source
550 files from the associated perl scripts.
553 *) Implement remaining functionality needed to support GOST ciphersuites.
554 Interop testing has been performed using CryptoPro implementations.
555 [Victor B. Wagner <vitus@cryptocom.ru>]
557 *) s390x assembler pack.
560 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
564 *) Implement Opaque PRF Input TLS extension as specified in
565 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
566 official specification yet and no extension type assignment by
567 IANA exists, this extension (for now) will have to be explicitly
568 enabled when building OpenSSL by providing the extension number
569 to use. For example, specify an option
571 -DTLSEXT_TYPE_opaque_prf_input=0x9527
573 to the "config" or "Configure" script to enable the extension,
574 assuming extension number 0x9527 (which is a completely arbitrary
575 and unofficial assignment based on the MD5 hash of the Internet
576 Draft). Note that by doing so, you potentially lose
577 interoperability with other TLS implementations since these might
578 be using the same extension number for other purposes.
580 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
581 opaque PRF input value to use in the handshake. This will create
582 an interal copy of the length-'len' string at 'src', and will
583 return non-zero for success.
585 To get more control and flexibility, provide a callback function
588 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
589 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
593 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
596 Callback function 'cb' will be called in handshakes, and is
597 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
598 Argument 'arg' is for application purposes (the value as given to
599 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
600 be provided to the callback function). The callback function
601 has to return non-zero to report success: usually 1 to use opaque
602 PRF input just if possible, or 2 to enforce use of the opaque PRF
603 input. In the latter case, the library will abort the handshake
604 if opaque PRF input is not successfully negotiated.
606 Arguments 'peerinput' and 'len' given to the callback function
607 will always be NULL and 0 in the case of a client. A server will
608 see the client's opaque PRF input through these variables if
609 available (NULL and 0 otherwise). Note that if the server
610 provides an opaque PRF input, the length must be the same as the
611 length of the client's opaque PRF input.
613 Note that the callback function will only be called when creating
614 a new session (session resumption can resume whatever was
615 previously negotiated), and will not be called in SSL 2.0
616 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
617 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
618 for applications that need to enforce opaque PRF input.
622 *) Update ssl code to support digests other than SHA1+MD5 for handshake
625 [Victor B. Wagner <vitus@cryptocom.ru>]
627 *) Add RFC4507 support to OpenSSL. This includes the corrections in
628 RFC4507bis. The encrypted ticket format is an encrypted encoded
629 SSL_SESSION structure, that way new session features are automatically
632 If a client application caches session in an SSL_SESSION structure
633 support is transparent because tickets are now stored in the encoded
636 The SSL_CTX structure automatically generates keys for ticket
637 protection in servers so again support should be possible
638 with no application modification.
640 If a client or server wishes to disable RFC4507 support then the option
641 SSL_OP_NO_TICKET can be set.
643 Add a TLS extension debugging callback to allow the contents of any client
644 or server extensions to be examined.
646 This work was sponsored by Google.
649 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
650 OpenSSL should now compile cleanly on gcc 4.2
651 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
653 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
654 support including streaming MAC support: this is required for GOST
656 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
658 *) Add option -stream to use PKCS#7 streaming in smime utility. New
659 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
660 to output in BER and PEM format.
663 *) Experimental support for use of HMAC via EVP_PKEY interface. This
664 allows HMAC to be handled via the EVP_DigestSign*() interface. The
665 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
666 ENGINE support for HMAC keys which are unextractable. New -mac and
667 -macopt options to dgst utility.
670 *) New option -sigopt to dgst utility. Update dgst to use
671 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
672 alternative signing paramaters such as X9.31 or PSS in the dgst
676 *) Change ssl_cipher_apply_rule(), the internal function that does
677 the work each time a ciphersuite string requests enabling
678 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
679 removing ("!foo+bar") a class of ciphersuites: Now it maintains
680 the order of disabled ciphersuites such that those ciphersuites
681 that most recently went from enabled to disabled not only stay
682 in order with respect to each other, but also have higher priority
683 than other disabled ciphersuites the next time ciphersuites are
686 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
687 the same ciphersuites as with "HIGH" alone, but in a specific
688 order where the PSK ciphersuites come first (since they are the
689 most recently disabled ciphersuites when "HIGH" is parsed).
691 Also, change ssl_create_cipher_list() (using this new
692 funcionality) such that between otherwise identical
693 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
697 *) Change ssl_create_cipher_list() so that it automatically
698 arranges the ciphersuites in reasonable order before starting
699 to process the rule string. Thus, the definition for "DEFAULT"
700 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
701 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
702 This makes it much easier to arrive at a reasonable default order
703 in applications for which anonymous ciphers are OK (meaning
704 that you can't actually use DEFAULT).
705 [Bodo Moeller; suggested by Victor Duchovni]
707 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
708 processing) into multiple integers instead of setting
709 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
710 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
711 (These masks as well as the individual bit definitions are hidden
712 away into the non-exported interface ssl/ssl_locl.h, so this
713 change to the definition of the SSL_CIPHER structure shouldn't
714 affect applications.) This give us more bits for each of these
715 categories, so there is no longer a need to coagulate AES128 and
716 AES256 into a single algorithm bit, and to coagulate Camellia128
717 and Camellia256 into a single algorithm bit, which has led to all
720 Thus, among other things, the kludge introduced in 0.9.7m and
721 0.9.8e for masking out AES256 independently of AES128 or masking
722 out Camellia256 independently of AES256 is not needed here in 0.9.9.
724 With the change, we also introduce new ciphersuite aliases that
725 so far were missing: "AES128", "AES256", "CAMELLIA128", and
729 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
730 Use the leftmost N bytes of the signature input if the input is
731 larger than the prime q (with N being the size in bytes of q).
734 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
735 it yet and it is largely untested.
738 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
741 *) Initial incomplete changes to avoid need for function casts in OpenSSL
742 some compilers (gcc 4.2 and later) reject their use. Safestack is
743 reimplemented. Update ASN1 to avoid use of legacy functions.
746 *) Win32/64 targets are linked with Winsock2.
749 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
750 to external functions. This can be used to increase CRL handling
751 efficiency especially when CRLs are very large by (for example) storing
752 the CRL revoked certificates in a database.
755 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
756 new CRLs added to a directory can be used. New command line option
757 -verify_return_error to s_client and s_server. This causes real errors
758 to be returned by the verify callback instead of carrying on no matter
759 what. This reflects the way a "real world" verify callback would behave.
762 *) GOST engine, supporting several GOST algorithms and public key formats.
763 Kindly donated by Cryptocom.
766 *) Partial support for Issuing Distribution Point CRL extension. CRLs
767 partitioned by DP are handled but no indirect CRL or reason partitioning
768 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
769 selected via a scoring technique which handles IDP and AKID in CRLs.
772 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
773 will ultimately be used for all verify operations: this will remove the
774 X509_STORE dependency on certificate verification and allow alternative
775 lookup methods. X509_STORE based implementations of these two callbacks.
778 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
779 Modify get_crl() to find a valid (unexpired) CRL if possible.
782 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
783 this would be called X509_CRL_cmp() but that name is already used by
784 a function that just compares CRL issuer names. Cache several CRL
785 extensions in X509_CRL structure and cache CRLDP in X509.
788 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
789 this maps equivalent X509_NAME structures into a consistent structure.
790 Name comparison can then be performed rapidly using memcmp().
793 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
797 *) Allow digests to supply their own micalg string for S/MIME type using
798 the ctrl EVP_MD_CTRL_MICALG.
801 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
802 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
803 ctrl. It can then customise the structure before and/or after signing
807 *) New function OBJ_add_sigid() to allow application defined signature OIDs
808 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
809 to free up any added signature OIDs.
812 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
813 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
814 digest and cipher tables. New options added to openssl utility:
815 list-message-digest-algorithms and list-cipher-algorithms.
818 *) Change the array representation of binary polynomials: the list
819 of degrees of non-zero coefficients is now terminated with -1.
820 Previously it was terminated with 0, which was also part of the
821 value; thus, the array representation was not applicable to
822 polynomials where t^0 has coefficient zero. This change makes
823 the array representation useful in a more general context.
826 *) Various modifications and fixes to SSL/TLS cipher string
827 handling. For ECC, the code now distinguishes between fixed ECDH
828 with RSA certificates on the one hand and with ECDSA certificates
829 on the other hand, since these are separate ciphersuites. The
830 unused code for Fortezza ciphersuites has been removed.
832 For consistency with EDH, ephemeral ECDH is now called "EECDH"
833 (not "ECDHE"). For consistency with the code for DH
834 certificates, use of ECDH certificates is now considered ECDH
835 authentication, not RSA or ECDSA authentication (the latter is
836 merely the CA's signing algorithm and not actively used in the
839 The temporary ciphersuite alias "ECCdraft" is no longer
840 available, and ECC ciphersuites are no longer excluded from "ALL"
841 and "DEFAULT". The following aliases now exist for RFC 4492
842 ciphersuites, most of these by analogy with the DH case:
844 kECDHr - ECDH cert, signed with RSA
845 kECDHe - ECDH cert, signed with ECDSA
846 kECDH - ECDH cert (signed with either RSA or ECDSA)
847 kEECDH - ephemeral ECDH
848 ECDH - ECDH cert or ephemeral ECDH
854 AECDH - anonymous ECDH
855 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
859 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
860 Use correct micalg parameters depending on digest(s) in signed message.
863 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
864 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
867 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
868 an engine to register a method. Add ENGINE lookups for methods and
869 functional reference processing.
872 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
873 EVP_{Sign,Verify}* which allow an application to customise the signature
877 *) New -resign option to smime utility. This adds one or more signers
878 to an existing PKCS#7 signedData structure. Also -md option to use an
879 alternative message digest algorithm for signing.
882 *) Tidy up PKCS#7 routines and add new functions to make it easier to
883 create PKCS7 structures containing multiple signers. Update smime
884 application to support multiple signers.
887 *) New -macalg option to pkcs12 utility to allow setting of an alternative
891 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
892 Reorganize PBE internals to lookup from a static table using NIDs,
893 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
894 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
895 PRF which will be automatically used with PBES2.
898 *) Replace the algorithm specific calls to generate keys in "req" with the
902 *) Update PKCS#7 enveloped data routines to use new API. This is now
903 supported by any public key method supporting the encrypt operation. A
904 ctrl is added to allow the public key algorithm to examine or modify
905 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
909 *) Add a ctrl to asn1 method to allow a public key algorithm to express
910 a default digest type to use. In most cases this will be SHA1 but some
911 algorithms (such as GOST) need to specify an alternative digest. The
912 return value indicates how strong the prefernce is 1 means optional and
913 2 is mandatory (that is it is the only supported type). Modify
914 ASN1_item_sign() to accept a NULL digest argument to indicate it should
915 use the default md. Update openssl utilities to use the default digest
916 type for signing if it is not explicitly indicated.
919 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
920 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
921 signing method from the key type. This effectively removes the link
922 between digests and public key types.
925 *) Add an OID cross reference table and utility functions. Its purpose is to
926 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
927 rsaEncryption. This will allow some of the algorithm specific hackery
928 needed to use the correct OID to be removed.
931 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
932 structures for PKCS7_sign(). They are now set up by the relevant public
936 *) Add provisional EC pkey method with support for ECDSA and ECDH.
939 *) Add support for key derivation (agreement) in the API, DH method and
943 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
944 public and private key formats. As a side effect these add additional
945 command line functionality not previously available: DSA signatures can be
946 generated and verified using pkeyutl and DH key support and generation in
951 [Oliver Tappe <zooey@hirschkaefer.de>]
953 *) New make target "install_html_docs" installs HTML renditions of the
955 [Oliver Tappe <zooey@hirschkaefer.de>]
957 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
958 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
959 support key and parameter generation and add initial key generation
960 functionality for RSA.
963 *) Add functions for main EVP_PKEY_method operations. The undocumented
964 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
965 EVP_PKEY_{encrypt,decrypt}_old.
968 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
969 key API, doesn't do much yet.
972 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
973 public key algorithms. New option to openssl utility:
974 "list-public-key-algorithms" to print out info.
977 *) Implement the Supported Elliptic Curves Extension for
978 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
981 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
982 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
985 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
986 utilities such as rsa, dsa, dsaparam etc except they process any key
990 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
991 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
992 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
996 *) Initial support for pluggable public key ASN1.
997 De-spaghettify the public key ASN1 handling. Move public and private
998 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
999 algorithm specific handling to a single module within the relevant
1000 algorithm directory. Add functions to allow (near) opaque processing
1001 of public and private key structures.
1004 *) Implement the Supported Point Formats Extension for
1005 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1008 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1009 for the psk identity [hint] and the psk callback functions to the
1010 SSL_SESSION, SSL and SSL_CTX structure.
1013 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1017 SSL_CTX_use_psk_identity_hint
1018 SSL_get_psk_identity_hint
1019 SSL_get_psk_identity
1020 SSL_use_psk_identity_hint
1022 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1024 *) Add RFC 3161 compliant time stamp request creation, response generation
1025 and response verification functionality.
1026 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1028 *) Add initial support for TLS extensions, specifically for the server_name
1029 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1030 have new members for a host name. The SSL data structure has an
1031 additional member SSL_CTX *initial_ctx so that new sessions can be
1032 stored in that context to allow for session resumption, even after the
1033 SSL has been switched to a new SSL_CTX in reaction to a client's
1034 server_name extension.
1036 New functions (subject to change):
1038 SSL_get_servername()
1039 SSL_get_servername_type()
1042 New CTRL codes and macros (subject to change):
1044 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1045 - SSL_CTX_set_tlsext_servername_callback()
1046 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1047 - SSL_CTX_set_tlsext_servername_arg()
1048 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1050 openssl s_client has a new '-servername ...' option.
1052 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1053 '-key2 ...', '-servername_fatal' (subject to change). This allows
1054 testing the HostName extension for a specific single host name ('-cert'
1055 and '-key' remain fallbacks for handshakes without HostName
1056 negotiation). If the unrecogninzed_name alert has to be sent, this by
1057 default is a warning; it becomes fatal with the '-servername_fatal'
1060 [Peter Sylvester, Remy Allais, Christophe Renou]
1062 *) Whirlpool hash implementation is added.
1065 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1066 bn(64,32). Because of instruction set limitations it doesn't have
1067 any negative impact on performance. This was done mostly in order
1068 to make it possible to share assembler modules, such as bn_mul_mont
1069 implementations, between 32- and 64-bit builds without hassle.
1072 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1073 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1077 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1078 dedicated Montgomery multiplication procedure, is introduced.
1079 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1080 "64-bit" performance on certain 32-bit targets.
1083 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1084 in SSL structures. New SSL ctrl to set maximum send fragment size.
1085 Save memory by seeting the I/O buffer sizes dynamically instead of
1086 using the maximum available value.
1089 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1090 in addition to the text details.
1093 *) Very, very preliminary EXPERIMENTAL support for printing of general
1094 ASN1 structures. This currently produces rather ugly output and doesn't
1095 handle several customised structures at all.
1098 *) Integrated support for PVK file format and some related formats such
1099 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1100 these in the 'rsa' and 'dsa' utilities.
1103 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1106 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1107 place for the (very old) "NETSCAPE" format certificates which are now
1108 handled using new ASN1 code equivalents.
1111 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1112 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1113 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1116 *) Modify CRL distribution points extension code to print out previously
1117 unsupported fields. Enhance extension setting code to allow setting of
1121 *) Add print and set support for Issuing Distribution Point CRL extension.
1124 *) Change 'Configure' script to enable Camellia by default.
1127 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1129 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1130 for multi-threaded use of ECDH.
1131 [Adam Langley (Google)]
1133 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1136 *) Add protection against ECDSA timing attacks as mentioned in the paper
1137 by Billy Bob Brumley and Nicola Tuveri, see:
1139 http://eprint.iacr.org/2011/232.pdf
1141 [Billy Bob Brumley and Nicola Tuveri]
1143 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1145 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1146 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1148 *) Fix bug in string printing code: if *any* escaping is enabled we must
1149 escape the escape character (backslash) or the resulting string is
1153 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1155 *) Disable code workaround for ancient and obsolete Netscape browsers
1156 and servers: an attacker can use it in a ciphersuite downgrade attack.
1157 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1160 *) Fixed J-PAKE implementation error, originally discovered by
1161 Sebastien Martini, further info and confirmation from Stefan
1162 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1165 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1167 *) Fix extension code to avoid race conditions which can result in a buffer
1168 overrun vulnerability: resumed sessions must not be modified as they can
1169 be shared by multiple threads. CVE-2010-3864
1172 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1175 *) Don't reencode certificate when calculating signature: cache and use
1176 the original encoding instead. This makes signature verification of
1177 some broken encodings work correctly.
1180 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1181 is also one of the inputs.
1182 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1184 *) Don't repeatedly append PBE algorithms to table if they already exist.
1185 Sort table on each new add. This effectively makes the table read only
1186 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1190 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1192 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1195 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1196 access or freeing data twice (CVE-2010-0742)
1197 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1199 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1200 common in certificates and some applications which only call
1201 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1205 Reduce copying into .apps and .test in makevms.com
1206 Don't try to use blank CA certificate in CA.com
1207 Allow use of C files from original directories in maketests.com
1208 [Steven M. Schweda" <sms@antinode.info>]
1210 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1212 *) When rejecting SSL/TLS records due to an incorrect version number, never
1213 update s->server with a new major version number. As of
1214 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1215 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1216 the previous behavior could result in a read attempt at NULL when
1217 receiving specific incorrect SSL/TLS records once record payload
1218 protection is active. (CVE-2010-0740)
1219 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1221 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1222 could be crashed if the relevant tables were not present (e.g. chrooted).
1223 [Tomas Hoger <thoger@redhat.com>]
1225 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1227 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1228 [Martin Olsson, Neel Mehta]
1230 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1231 accommodate for stack sorting, always a write lock!).
1234 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1235 excessive delays in the RAND_poll(): over a minute. As a workaround
1236 include a time check in the inner Heap32Next loop too.
1239 *) The code that handled flushing of data in SSL/TLS originally used the
1240 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1241 the problem outlined in PR#1949. The fix suggested there however can
1242 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1243 of Apache). So instead simplify the code to flush unconditionally.
1244 This should be fine since flushing with no data to flush is a no op.
1247 *) Handle TLS versions 2.0 and later properly and correctly use the
1248 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1249 off ancient servers have a habit of sticking around for a while...
1252 *) Modify compression code so it frees up structures without using the
1253 ex_data callbacks. This works around a problem where some applications
1254 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1255 restarting) then use compression (e.g. SSL with compression) later.
1256 This results in significant per-connection memory leaks and
1257 has caused some security issues including CVE-2008-1678 and
1261 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1262 change when encrypting or decrypting.
1265 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1266 connect and renegotiate with servers which do not support RI.
1267 Until RI is more widely deployed this option is enabled by default.
1270 *) Add "missing" ssl ctrls to clear options and mode.
1273 *) If client attempts to renegotiate and doesn't support RI respond with
1274 a no_renegotiation alert as required by RFC5746. Some renegotiating
1275 TLS clients will continue a connection gracefully when they receive
1276 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1277 waiting for a server hello which it will never receive. Now we treat a
1278 received no_renegotiation alert as a fatal error. This is because
1279 applications requesting a renegotiation might well expect it to succeed
1280 and would have no code in place to handle the server denying it so the
1281 only safe thing to do is to terminate the connection.
1284 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1285 peer supports secure renegotiation and 0 otherwise. Print out peer
1286 renegotiation support in s_client/s_server.
1289 *) Replace the highly broken and deprecated SPKAC certification method with
1290 the updated NID creation version. This should correctly handle UTF8.
1293 *) Implement RFC5746. Re-enable renegotiation but require the extension
1294 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1295 turns out to be a bad idea. It has been replaced by
1296 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1297 SSL_CTX_set_options(). This is really not recommended unless you
1298 know what you are doing.
1299 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1301 *) Fixes to stateless session resumption handling. Use initial_ctx when
1302 issuing and attempting to decrypt tickets in case it has changed during
1303 servername handling. Use a non-zero length session ID when attempting
1304 stateless session resumption: this makes it possible to determine if
1305 a resumption has occurred immediately after receiving server hello
1306 (several places in OpenSSL subtly assume this) instead of later in
1310 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1311 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1312 fixes for a few places where the return code is not checked
1314 [Julia Lawall <julia@diku.dk>]
1316 *) Add --strict-warnings option to Configure script to include devteam
1317 warnings in other configurations.
1320 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1321 makes it possible to install openssl libraries in locations which
1322 have names other than "lib", for example "/usr/lib64" which some
1324 [Steve Henson, based on patch from Jeremy Utley]
1326 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1327 X690 8.9.12 and can produce some misleading textual output of OIDs.
1328 [Steve Henson, reported by Dan Kaminsky]
1330 *) Delete MD2 from algorithm tables. This follows the recommendation in
1331 several standards that it is not used in new applications due to
1332 several cryptographic weaknesses. For binary compatibility reasons
1333 the MD2 API is still compiled in by default.
1336 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1340 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1341 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1343 [Guenter <lists@gknw.net>]
1345 *) Fix the server certificate chain building code to use X509_verify_cert(),
1346 it used to have an ad-hoc builder which was unable to cope with anything
1347 other than a simple chain.
1348 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1350 *) Don't check self signed certificate signatures in X509_verify_cert()
1351 by default (a flag can override this): it just wastes time without
1352 adding any security. As a useful side effect self signed root CAs
1353 with non-FIPS digests are now usable in FIPS mode.
1356 *) In dtls1_process_out_of_seq_message() the check if the current message
1357 is already buffered was missing. For every new message was memory
1358 allocated, allowing an attacker to perform an denial of service attack
1359 with sending out of seq handshake messages until there is no memory
1360 left. Additionally every future messege was buffered, even if the
1361 sequence number made no sense and would be part of another handshake.
1362 So only messages with sequence numbers less than 10 in advance will be
1363 buffered. (CVE-2009-1378)
1364 [Robin Seggelmann, discovered by Daniel Mentz]
1366 *) Records are buffered if they arrive with a future epoch to be
1367 processed after finishing the corresponding handshake. There is
1368 currently no limitation to this buffer allowing an attacker to perform
1369 a DOS attack with sending records with future epochs until there is no
1370 memory left. This patch adds the pqueue_size() function to detemine
1371 the size of a buffer and limits the record buffer to 100 entries.
1373 [Robin Seggelmann, discovered by Daniel Mentz]
1375 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1376 parent structure is freed. (CVE-2009-1379)
1379 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1380 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1383 [Ilya O. <vrghost@gmail.com>]
1385 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1387 *) Disable renegotiation completely - this fixes a severe security
1388 problem (CVE-2009-3555) at the cost of breaking all
1389 renegotiation. Renegotiation can be re-enabled by setting
1390 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1391 run-time. This is really not recommended unless you know what
1395 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1397 *) Don't set val to NULL when freeing up structures, it is freed up by
1398 underlying code. If sizeof(void *) > sizeof(long) this can result in
1399 zeroing past the valid field. (CVE-2009-0789)
1400 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1402 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1403 checked correctly. This would allow some invalid signed attributes to
1404 appear to verify correctly. (CVE-2009-0591)
1405 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1407 *) Reject UniversalString and BMPString types with invalid lengths. This
1408 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1409 a legal length. (CVE-2009-0590)
1412 *) Set S/MIME signing as the default purpose rather than setting it
1413 unconditionally. This allows applications to override it at the store
1417 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1418 to handle some structures.
1421 *) Improve efficiency of mem_gets: don't search whole buffer each time
1423 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1425 *) New -hex option for openssl rand.
1428 *) Print out UTF8String and NumericString when parsing ASN1.
1431 *) Support NumericString type for name components.
1434 *) Allow CC in the environment to override the automatically chosen
1435 compiler. Note that nothing is done to ensure flags work with the
1439 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1441 *) Properly check EVP_VerifyFinal() and similar return values
1443 [Ben Laurie, Bodo Moeller, Google Security Team]
1445 *) Enable TLS extensions by default.
1448 *) Allow the CHIL engine to be loaded, whether the application is
1449 multithreaded or not. (This does not release the developer from the
1450 obligation to set up the dynamic locking callbacks.)
1451 [Sander Temme <sander@temme.net>]
1453 *) Use correct exit code if there is an error in dgst command.
1454 [Steve Henson; problem pointed out by Roland Dirlewanger]
1456 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1457 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1460 *) Add experimental JPAKE support, including demo authentication in
1461 s_client and s_server.
1464 *) Set the comparison function in v3_addr_canonize().
1465 [Rob Austein <sra@hactrn.net>]
1467 *) Add support for XMPP STARTTLS in s_client.
1468 [Philip Paeps <philip@freebsd.org>]
1470 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1471 to ensure that even with this option, only ciphersuites in the
1472 server's preference list will be accepted. (Note that the option
1473 applies only when resuming a session, so the earlier behavior was
1474 just about the algorithm choice for symmetric cryptography.)
1477 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1479 *) Fix NULL pointer dereference if a DTLS server received
1480 ChangeCipherSpec as first record (CVE-2009-1386).
1483 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1484 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1487 *) The fix in 0.9.8c that supposedly got rid of unsafe
1488 double-checked locking was incomplete for RSA blinding,
1489 addressing just one layer of what turns out to have been
1490 doubly unsafe triple-checked locking.
1492 So now fix this for real by retiring the MONT_HELPER macro
1493 in crypto/rsa/rsa_eay.c.
1495 [Bodo Moeller; problem pointed out by Marius Schilder]
1497 *) Various precautionary measures:
1499 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1501 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1502 (NB: This would require knowledge of the secret session ticket key
1503 to exploit, in which case you'd be SOL either way.)
1505 - Change bn_nist.c so that it will properly handle input BIGNUMs
1506 outside the expected range.
1508 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1511 [Neel Mehta, Bodo Moeller]
1513 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1514 the load fails. Useful for distros.
1515 [Ben Laurie and the FreeBSD team]
1517 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1520 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1523 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1525 This work was sponsored by Logica.
1528 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1529 keystores. Support for SSL/TLS client authentication too.
1530 Not compiled unless enable-capieng specified to Configure.
1532 This work was sponsored by Logica.
1535 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1536 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1537 attribute creation routines such as certifcate requests and PKCS#12
1541 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1543 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1544 handshake which could lead to a cilent crash as found using the
1545 Codenomicon TLS test suite (CVE-2008-1672)
1546 [Steve Henson, Mark Cox]
1548 *) Fix double free in TLS server name extensions which could lead to
1549 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1552 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1554 Clear the error queue to ensure that error entries left from
1555 older function calls do not interfere with the correct operation.
1556 [Lutz Jaenicke, Erik de Castro Lopo]
1558 *) Remove root CA certificates of commercial CAs:
1560 The OpenSSL project does not recommend any specific CA and does not
1561 have any policy with respect to including or excluding any CA.
1562 Therefore it does not make any sense to ship an arbitrary selection
1563 of root CA certificates with the OpenSSL software.
1566 *) RSA OAEP patches to fix two separate invalid memory reads.
1567 The first one involves inputs when 'lzero' is greater than
1568 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1569 before the beginning of from). The second one involves inputs where
1570 the 'db' section contains nothing but zeroes (there is a one-byte
1571 invalid read after the end of 'db').
1572 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1574 *) Partial backport from 0.9.9-dev:
1576 Introduce bn_mul_mont (dedicated Montgomery multiplication
1577 procedure) as a candidate for BIGNUM assembler implementation.
1578 While 0.9.9-dev uses assembler for various architectures, only
1579 x86_64 is available by default here in the 0.9.8 branch, and
1580 32-bit x86 is available through a compile-time setting.
1582 To try the 32-bit x86 assembler implementation, use Configure
1583 option "enable-montasm" (which exists only for this backport).
1585 As "enable-montasm" for 32-bit x86 disclaims code stability
1586 anyway, in this constellation we activate additional code
1587 backported from 0.9.9-dev for further performance improvements,
1588 namely BN_from_montgomery_word. (To enable this otherwise,
1589 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1591 [Andy Polyakov (backport partially by Bodo Moeller)]
1593 *) Add TLS session ticket callback. This allows an application to set
1594 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1595 values. This is useful for key rollover for example where several key
1596 sets may exist with different names.
1599 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1600 This was broken until now in 0.9.8 releases, such that the only way
1601 a registered ENGINE could be used (assuming it initialises
1602 successfully on the host) was to explicitly set it as the default
1603 for the relevant algorithms. This is in contradiction with 0.9.7
1604 behaviour and the documentation. With this fix, when an ENGINE is
1605 registered into a given algorithm's table of implementations, the
1606 'uptodate' flag is reset so that auto-discovery will be used next
1607 time a new context for that algorithm attempts to select an
1609 [Ian Lister (tweaked by Geoff Thorpe)]
1611 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1612 implemention in the following ways:
1614 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1617 Lack of BER streaming support means one pass streaming processing is
1618 only supported if data is detached: setting the streaming flag is
1619 ignored for embedded content.
1621 CMS support is disabled by default and must be explicitly enabled
1622 with the enable-cms configuration option.
1625 *) Update the GMP engine glue to do direct copies between BIGNUM and
1626 mpz_t when openssl and GMP use the same limb size. Otherwise the
1627 existing "conversion via a text string export" trick is still used.
1628 [Paul Sheer <paulsheer@gmail.com>]
1630 *) Zlib compression BIO. This is a filter BIO which compressed and
1631 uncompresses any data passed through it.
1634 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1635 RFC3394 compatible AES key wrapping.
1638 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1639 sets string data without copying. X509_ALGOR_set0() and
1640 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1641 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1642 from an X509_ATTRIBUTE structure optionally checking it occurs only
1643 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1647 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1648 to get the expected BN_FLG_CONSTTIME behavior.
1649 [Bodo Moeller (Google)]
1653 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1654 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1655 - added some more tests to do_tests.pl
1656 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1657 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1658 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1659 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1660 - various changes to netware.pl to enable gcc-cross builds on Win32
1662 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1663 - various changes to fix missing prototype warnings
1664 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1665 - added AES, WHIRLPOOL and CPUID assembler code to build files
1666 - added missing AES assembler make rules to mk1mf.pl
1667 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1668 [Guenter Knauf <eflash@gmx.net>]
1670 *) Implement certificate status request TLS extension defined in RFC3546.
1671 A client can set the appropriate parameters and receive the encoded
1672 OCSP response via a callback. A server can query the supplied parameters
1673 and set the encoded OCSP response in the callback. Add simplified examples
1674 to s_client and s_server.
1677 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1679 *) Fix various bugs:
1680 + Binary incompatibility of ssl_ctx_st structure
1681 + DTLS interoperation with non-compliant servers
1682 + Don't call get_session_cb() without proposed session
1683 + Fix ia64 assembler code
1684 [Andy Polyakov, Steve Henson]
1686 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1688 *) DTLS Handshake overhaul. There were longstanding issues with
1689 OpenSSL DTLS implementation, which were making it impossible for
1690 RFC 4347 compliant client to communicate with OpenSSL server.
1691 Unfortunately just fixing these incompatibilities would "cut off"
1692 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1693 server keeps tolerating non RFC compliant syntax. The opposite is
1694 not true, 0.9.8f client can not communicate with earlier server.
1695 This update even addresses CVE-2007-4995.
1698 *) Changes to avoid need for function casts in OpenSSL: some compilers
1699 (gcc 4.2 and later) reject their use.
1700 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1703 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1704 RFC4507bis. The encrypted ticket format is an encrypted encoded
1705 SSL_SESSION structure, that way new session features are automatically
1708 If a client application caches session in an SSL_SESSION structure
1709 support is transparent because tickets are now stored in the encoded
1712 The SSL_CTX structure automatically generates keys for ticket
1713 protection in servers so again support should be possible
1714 with no application modification.
1716 If a client or server wishes to disable RFC4507 support then the option
1717 SSL_OP_NO_TICKET can be set.
1719 Add a TLS extension debugging callback to allow the contents of any client
1720 or server extensions to be examined.
1722 This work was sponsored by Google.
1725 *) Add initial support for TLS extensions, specifically for the server_name
1726 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1727 have new members for a host name. The SSL data structure has an
1728 additional member SSL_CTX *initial_ctx so that new sessions can be
1729 stored in that context to allow for session resumption, even after the
1730 SSL has been switched to a new SSL_CTX in reaction to a client's
1731 server_name extension.
1733 New functions (subject to change):
1735 SSL_get_servername()
1736 SSL_get_servername_type()
1739 New CTRL codes and macros (subject to change):
1741 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1742 - SSL_CTX_set_tlsext_servername_callback()
1743 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1744 - SSL_CTX_set_tlsext_servername_arg()
1745 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1747 openssl s_client has a new '-servername ...' option.
1749 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1750 '-key2 ...', '-servername_fatal' (subject to change). This allows
1751 testing the HostName extension for a specific single host name ('-cert'
1752 and '-key' remain fallbacks for handshakes without HostName
1753 negotiation). If the unrecogninzed_name alert has to be sent, this by
1754 default is a warning; it becomes fatal with the '-servername_fatal'
1757 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1759 *) Add AES and SSE2 assembly language support to VC++ build.
1762 *) Mitigate attack on final subtraction in Montgomery reduction.
1765 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1766 (which previously caused an internal error).
1769 *) Squeeze another 10% out of IGE mode when in != out.
1772 *) AES IGE mode speedup.
1773 [Dean Gaudet (Google)]
1775 *) Add the Korean symmetric 128-bit cipher SEED (see
1776 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1777 add SEED ciphersuites from RFC 4162:
1779 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1780 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1781 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1782 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1784 To minimize changes between patchlevels in the OpenSSL 0.9.8
1785 series, SEED remains excluded from compilation unless OpenSSL
1786 is configured with 'enable-seed'.
1787 [KISA, Bodo Moeller]
1789 *) Mitigate branch prediction attacks, which can be practical if a
1790 single processor is shared, allowing a spy process to extract
1791 information. For detailed background information, see
1792 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1793 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1794 and Necessary Software Countermeasures"). The core of the change
1795 are new versions BN_div_no_branch() and
1796 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1797 respectively, which are slower, but avoid the security-relevant
1798 conditional branches. These are automatically called by BN_div()
1799 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1800 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1801 remove a conditional branch.
1803 BN_FLG_CONSTTIME is the new name for the previous
1804 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1805 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1806 in the exponent causes BN_mod_exp_mont() to use the alternative
1807 implementation in BN_mod_exp_mont_consttime().) The old name
1808 remains as a deprecated alias.
1810 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1811 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1812 constant-time implementations for more than just exponentiation.
1813 Here too the old name is kept as a deprecated alias.
1815 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1816 the BN_BLINDING structure gets an independent copy of the
1817 modulus. This means that the previous "BIGNUM *m" argument to
1818 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1819 essentially becomes "const BIGNUM *m", although we can't actually
1820 change this in the header file before 0.9.9. It allows
1821 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1822 enable BN_FLG_CONSTTIME.
1824 [Matthew D Wood (Intel Corp)]
1826 *) In the SSL/TLS server implementation, be strict about session ID
1827 context matching (which matters if an application uses a single
1828 external cache for different purposes). Previously,
1829 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1830 set. This did ensure strict client verification, but meant that,
1831 with applications using a single external cache for quite
1832 different requirements, clients could circumvent ciphersuite
1833 restrictions for a given session ID context by starting a session
1834 in a different context.
1837 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1838 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1839 authentication-only ciphersuites.
1842 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1843 not complete and could lead to a possible single byte overflow
1844 (CVE-2007-5135) [Ben Laurie]
1846 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1848 *) Since AES128 and AES256 (and similarly Camellia128 and
1849 Camellia256) share a single mask bit in the logic of
1850 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1851 kludge to work properly if AES128 is available and AES256 isn't
1852 (or if Camellia128 is available and Camellia256 isn't).
1855 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1856 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1857 When a point or a seed is encoded in a BIT STRING, we need to
1858 prevent the removal of trailing zero bits to get the proper DER
1859 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1860 of a NamedBitList, for which trailing 0 bits need to be removed.)
1863 *) Have SSL/TLS server implementation tolerate "mismatched" record
1864 protocol version while receiving ClientHello even if the
1865 ClientHello is fragmented. (The server can't insist on the
1866 particular protocol version it has chosen before the ServerHello
1867 message has informed the client about his choice.)
1870 *) Add RFC 3779 support.
1871 [Rob Austein for ARIN, Ben Laurie]
1873 *) Load error codes if they are not already present instead of using a
1874 static variable. This allows them to be cleanly unloaded and reloaded.
1875 Improve header file function name parsing.
1878 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1879 or CAPABILITY handshake as required by RFCs.
1882 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1884 *) Introduce limits to prevent malicious keys being able to
1885 cause a denial of service. (CVE-2006-2940)
1886 [Steve Henson, Bodo Moeller]
1888 *) Fix ASN.1 parsing of certain invalid structures that can result
1889 in a denial of service. (CVE-2006-2937) [Steve Henson]
1891 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1892 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1894 *) Fix SSL client code which could crash if connecting to a
1895 malicious SSLv2 server. (CVE-2006-4343)
1896 [Tavis Ormandy and Will Drewry, Google Security Team]
1898 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1899 match only those. Before that, "AES256-SHA" would be interpreted
1900 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1901 the same strength classification in 0.9.7h) as we currently only
1902 have a single AES bit in the ciphersuite description bitmap.
1903 That change, however, also applied to ciphersuite strings such as
1904 "RC4-MD5" that intentionally matched multiple ciphersuites --
1905 namely, SSL 2.0 ciphersuites in addition to the more common ones
1906 from SSL 3.0/TLS 1.0.
1908 So we change the selection algorithm again: Naming an explicit
1909 ciphersuite selects this one ciphersuite, and any other similar
1910 ciphersuite (same bitmap) from *other* protocol versions.
1911 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1912 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1914 Since SSL 2.0 does not have any ciphersuites for which the
1915 128/256 bit distinction would be relevant, this works for now.
1916 The proper fix will be to use different bits for AES128 and
1917 AES256, which would have avoided the problems from the beginning;
1918 however, bits are scarce, so we can only do this in a new release
1919 (not just a patchlevel) when we can change the SSL_CIPHER
1920 definition to split the single 'unsigned long mask' bitmap into
1921 multiple values to extend the available space.
1925 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1927 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1928 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1930 *) Add AES IGE and biIGE modes.
1933 *) Change the Unix randomness entropy gathering to use poll() when
1934 possible instead of select(), since the latter has some
1935 undesirable limitations.
1936 [Darryl Miles via Richard Levitte and Bodo Moeller]
1938 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1939 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1940 cannot be implicitly activated as part of, e.g., the "AES" alias.
1941 However, please upgrade to OpenSSL 0.9.9[-dev] for
1942 non-experimental use of the ECC ciphersuites to get TLS extension
1943 support, which is required for curve and point format negotiation
1944 to avoid potential handshake problems.
1947 *) Disable rogue ciphersuites:
1949 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1950 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1951 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1953 The latter two were purportedly from
1954 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1957 Also deactivate the remaining ciphersuites from
1958 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1959 unofficial, and the ID has long expired.
1962 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1963 dual-core machines) and other potential thread-safety issues.
1966 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1967 versions), which is now available for royalty-free use
1968 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1969 Also, add Camellia TLS ciphersuites from RFC 4132.
1971 To minimize changes between patchlevels in the OpenSSL 0.9.8
1972 series, Camellia remains excluded from compilation unless OpenSSL
1973 is configured with 'enable-camellia'.
1976 *) Disable the padding bug check when compression is in use. The padding
1977 bug check assumes the first packet is of even length, this is not
1978 necessarily true if compresssion is enabled and can result in false
1979 positives causing handshake failure. The actual bug test is ancient
1980 code so it is hoped that implementations will either have fixed it by
1981 now or any which still have the bug do not support compression.
1984 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1986 *) When applying a cipher rule check to see if string match is an explicit
1987 cipher suite and only match that one cipher suite if it is.
1990 *) Link in manifests for VC++ if needed.
1991 [Austin Ziegler <halostatue@gmail.com>]
1993 *) Update support for ECC-based TLS ciphersuites according to
1994 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1995 TLS extensions, which are supported starting with the 0.9.9
1996 branch, not in the OpenSSL 0.9.8 branch).
1999 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2000 opaque EVP_CIPHER_CTX handling.
2003 *) Fixes and enhancements to zlib compression code. We now only use
2004 "zlib1.dll" and use the default __cdecl calling convention on Win32
2005 to conform with the standards mentioned here:
2006 http://www.zlib.net/DLL_FAQ.txt
2007 Static zlib linking now works on Windows and the new --with-zlib-include
2008 --with-zlib-lib options to Configure can be used to supply the location
2009 of the headers and library. Gracefully handle case where zlib library
2013 *) Several fixes and enhancements to the OID generation code. The old code
2014 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2015 handle numbers larger than ULONG_MAX, truncated printing and had a
2016 non standard OBJ_obj2txt() behaviour.
2019 *) Add support for building of engines under engine/ as shared libraries
2020 under VC++ build system.
2023 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2024 Hopefully, we will not see any false combination of paths any more.
2027 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2029 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2030 (part of SSL_OP_ALL). This option used to disable the
2031 countermeasure against man-in-the-middle protocol-version
2032 rollback in the SSL 2.0 server implementation, which is a bad
2033 idea. (CVE-2005-2969)
2035 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2036 for Information Security, National Institute of Advanced Industrial
2037 Science and Technology [AIST], Japan)]
2039 *) Add two function to clear and return the verify parameter flags.
2042 *) Keep cipherlists sorted in the source instead of sorting them at
2043 runtime, thus removing the need for a lock.
2046 *) Avoid some small subgroup attacks in Diffie-Hellman.
2047 [Nick Mathewson and Ben Laurie]
2049 *) Add functions for well-known primes.
2052 *) Extended Windows CE support.
2053 [Satoshi Nakamura and Andy Polyakov]
2055 *) Initialize SSL_METHOD structures at compile time instead of during
2056 runtime, thus removing the need for a lock.
2059 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2060 attempting to decrypt each encrypted key in turn. Add support to
2064 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2066 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2069 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2072 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2073 key into the same file any more.
2076 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2079 *) Add -utf8 command line and config file option to 'ca'.
2080 [Stefan <stf@udoma.org]
2082 *) Removed the macro des_crypt(), as it seems to conflict with some
2083 libraries. Use DES_crypt().
2086 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2087 involves renaming the source and generated shared-libs for
2088 both. The engines will accept the corrected or legacy ids
2089 ('ncipher' and '4758_cca' respectively) when binding. NB,
2090 this only applies when building 'shared'.
2091 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2093 *) Add attribute functions to EVP_PKEY structure. Modify
2094 PKCS12_create() to recognize a CSP name attribute and
2095 use it. Make -CSP option work again in pkcs12 utility.
2098 *) Add new functionality to the bn blinding code:
2099 - automatic re-creation of the BN_BLINDING parameters after
2100 a fixed number of uses (currently 32)
2101 - add new function for parameter creation
2102 - introduce flags to control the update behaviour of the
2103 BN_BLINDING parameters
2104 - hide BN_BLINDING structure
2105 Add a second BN_BLINDING slot to the RSA structure to improve
2106 performance when a single RSA object is shared among several
2110 *) Add support for DTLS.
2111 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2113 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2114 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2117 *) Remove buggy and incompletet DH cert support from
2118 ssl/ssl_rsa.c and ssl/s3_both.c
2121 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2122 the apps/openssl applications.
2125 *) Compile clean with "-Wall -Wmissing-prototypes
2126 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2127 DEBUG_SAFESTACK must also be set.
2130 *) Change ./Configure so that certain algorithms can be disabled by default.
2131 The new counterpiece to "no-xxx" is "enable-xxx".
2133 The patented RC5 and MDC2 algorithms will now be disabled unless
2134 "enable-rc5" and "enable-mdc2", respectively, are specified.
2136 (IDEA remains enabled despite being patented. This is because IDEA
2137 is frequently required for interoperability, and there is no license
2138 fee for non-commercial use. As before, "no-idea" can be used to
2139 avoid this algorithm.)
2143 *) Add processing of proxy certificates (see RFC 3820). This work was
2144 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2145 EGEE (Enabling Grids for E-science in Europe).
2148 *) RC4 performance overhaul on modern architectures/implementations, such
2149 as Intel P4, IA-64 and AMD64.
2152 *) New utility extract-section.pl. This can be used specify an alternative
2153 section number in a pod file instead of having to treat each file as
2154 a separate case in Makefile. This can be done by adding two lines to the
2157 =for comment openssl_section:XXX
2159 The blank line is mandatory.
2163 *) New arguments -certform, -keyform and -pass for s_client and s_server
2164 to allow alternative format key and certificate files and passphrase
2168 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2169 update associated structures and add various utility functions.
2171 Add new policy related verify parameters, include policy checking in
2172 standard verify code. Enhance 'smime' application with extra parameters
2173 to support policy checking and print out.
2176 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2177 Nehemiah processors. These extensions support AES encryption in hardware
2178 as well as RNG (though RNG support is currently disabled).
2179 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2181 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2184 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2185 [Andy Polyakov and a number of other people]
2187 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2188 implementation contributed by IBM.
2189 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2191 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2192 exponent rather than 'unsigned long'. There is a corresponding change to
2193 the new 'rsa_keygen' element of the RSA_METHOD structure.
2194 [Jelte Jansen, Geoff Thorpe]
2196 *) Functionality for creating the initial serial number file is now
2197 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2199 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2200 number file to 1, which is bound to cause problems. To avoid
2201 the problems while respecting compatibility between different 0.9.7
2202 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2203 CA.pl for serial number initialization. With the new release 0.9.8,
2204 we can fix the problem directly in the 'ca' utility.)
2207 *) Reduced header interdepencies by declaring more opaque objects in
2208 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2209 give fewer recursive includes, which could break lazy source code - so
2210 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2211 developers should define this symbol when building and using openssl to
2212 ensure they track the recommended behaviour, interfaces, [etc], but
2213 backwards-compatible behaviour prevails when this isn't defined.
2216 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2219 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2220 This will generate a random key of the appropriate length based on the
2221 cipher context. The EVP_CIPHER can provide its own random key generation
2222 routine to support keys of a specific form. This is used in the des and
2223 3des routines to generate a key of the correct parity. Update S/MIME
2224 code to use new functions and hence generate correct parity DES keys.
2225 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2226 valid (weak or incorrect parity).
2229 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2230 as looking them up. This is useful when the verified structure may contain
2231 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2232 present unless the new PKCS7_NO_CRL flag is asserted.
2235 *) Extend ASN1 oid configuration module. It now additionally accepts the
2238 shortName = some long name, 1.2.3.4
2241 *) Reimplemented the BN_CTX implementation. There is now no more static
2242 limitation on the number of variables it can handle nor the depth of the
2243 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2244 information can now expand as required, and rather than having a single
2245 static array of bignums, BN_CTX now uses a linked-list of such arrays
2246 allowing it to expand on demand whilst maintaining the usefulness of
2247 BN_CTX's "bundling".
2250 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2251 to allow all RSA operations to function using a single BN_CTX.
2254 *) Preliminary support for certificate policy evaluation and checking. This
2255 is initially intended to pass the tests outlined in "Conformance Testing
2256 of Relying Party Client Certificate Path Processing Logic" v1.07.
2259 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2260 remained unused and not that useful. A variety of other little bignum
2261 tweaks and fixes have also been made continuing on from the audit (see
2265 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2266 associated ASN1, EVP and SSL functions and old ASN1 macros.
2269 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2270 and this should never fail. So the return value from the use of
2271 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2272 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2275 *) BN_CTX_get() should return zero-valued bignums, providing the same
2276 initialised value as BN_new().
2277 [Geoff Thorpe, suggested by Ulf Möller]
2279 *) Support for inhibitAnyPolicy certificate extension.
2282 *) An audit of the BIGNUM code is underway, for which debugging code is
2283 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2284 is considered valid when processing BIGNUMs, and causes execution to
2285 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2286 further steps are taken to deliberately pollute unused data in BIGNUM
2287 structures to try and expose faulty code further on. For now, openssl will
2288 (in its default mode of operation) continue to tolerate the inconsistent
2289 forms that it has tolerated in the past, but authors and packagers should
2290 consider trying openssl and their own applications when compiled with
2291 these debugging symbols defined. It will help highlight potential bugs in
2292 their own code, and will improve the test coverage for OpenSSL itself. At
2293 some point, these tighter rules will become openssl's default to improve
2294 maintainability, though the assert()s and other overheads will remain only
2295 in debugging configurations. See bn.h for more details.
2296 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2298 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2299 that can only be obtained through BN_CTX_new() (which implicitly
2300 initialises it). The presence of this function only made it possible
2301 to overwrite an existing structure (and cause memory leaks).
2304 *) Because of the callback-based approach for implementing LHASH as a
2305 template type, lh_insert() adds opaque objects to hash-tables and
2306 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2307 to clean up those corresponding objects before destroying the hash table
2308 (and losing the object pointers). So some over-zealous constifications in
2309 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2310 objects as "const" and the lh_doall[_arg] callback wrappers are not
2311 prototyped to have "const" restrictions on the object pointers they are
2312 given (and so aren't required to cast them away any more).
2315 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2316 (speed) prefers to use its own implementation. The two implementations
2317 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2318 its object type properly exposed (MS_TM) instead of casting to/from "char
2319 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2320 aren't necessarily the greatest nomenclatures - but this is what was used
2321 internally to the implementation so I've used that for now.
2324 *) Ensure that deprecated functions do not get compiled when
2325 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2326 the self-tests were still using deprecated key-generation functions so
2327 these have been updated also.
2330 *) Reorganise PKCS#7 code to separate the digest location functionality
2331 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2332 New function PKCS7_set_digest() to set the digest type for PKCS#7
2333 digestedData type. Add additional code to correctly generate the
2334 digestedData type and add support for this type in PKCS7 initialization
2338 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2339 structure of type "other".
2342 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2343 sure the loop does correctly stop and breaking ("division by zero")
2344 modulus operations are not performed. The (pre-generated) prime
2345 table crypto/bn/bn_prime.h was already correct, but it could not be
2346 re-generated on some platforms because of the "division by zero"
2347 situation in the script.
2348 [Ralf S. Engelschall]
2350 *) Update support for ECC-based TLS ciphersuites according to
2351 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2352 SHA-1 now is only used for "small" curves (where the
2353 representation of a field element takes up to 24 bytes); for
2354 larger curves, the field element resulting from ECDH is directly
2355 used as premaster secret.
2356 [Douglas Stebila (Sun Microsystems Laboratories)]
2358 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2359 curve secp160r1 to the tests.
2360 [Douglas Stebila (Sun Microsystems Laboratories)]
2362 *) Add the possibility to load symbols globally with DSO.
2363 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2365 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2366 control of the error stack.
2369 *) Add support for STORE in ENGINE.
2372 *) Add the STORE type. The intention is to provide a common interface
2373 to certificate and key stores, be they simple file-based stores, or
2374 HSM-type store, or LDAP stores, or...
2375 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2378 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2379 pass a list of arguments to any function as well as provide a way
2380 for a function to pass data back to the caller.
2383 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2384 works like BUF_strdup() but can be used to duplicate a portion of
2385 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2389 *) Add the function sk_find_ex() which works like sk_find(), but will
2390 return an index to an element even if an exact match couldn't be
2391 found. The index is guaranteed to point at the element where the
2392 searched-for key would be inserted to preserve sorting order.
2395 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2396 takes an extra flags argument for optional functionality. Currently,
2397 the following flags are defined:
2399 OBJ_BSEARCH_VALUE_ON_NOMATCH
2400 This one gets OBJ_bsearch_ex() to return a pointer to the first
2401 element where the comparing function returns a negative or zero
2404 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2405 This one gets OBJ_bsearch_ex() to return a pointer to the first
2406 element where the comparing function returns zero. This is useful
2407 if there are more than one element where the comparing function
2411 *) Make it possible to create self-signed certificates with 'openssl ca'
2412 in such a way that the self-signed certificate becomes part of the
2413 CA database and uses the same mechanisms for serial number generation
2414 as all other certificate signing. The new flag '-selfsign' enables
2415 this functionality. Adapt CA.sh and CA.pl.in.
2418 *) Add functionality to check the public key of a certificate request
2419 against a given private. This is useful to check that a certificate
2420 request can be signed by that key (self-signing).
2423 *) Make it possible to have multiple active certificates with the same
2424 subject in the CA index file. This is done only if the keyword
2425 'unique_subject' is set to 'no' in the main CA section (default
2426 if 'CA_default') of the configuration file. The value is saved
2427 with the database itself in a separate index attribute file,
2428 named like the index file with '.attr' appended to the name.
2431 *) Generate muti valued AVAs using '+' notation in config files for
2435 *) Support for nameConstraints certificate extension.
2438 *) Support for policyConstraints certificate extension.
2441 *) Support for policyMappings certificate extension.
2444 *) Make sure the default DSA_METHOD implementation only uses its
2445 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2446 and change its own handlers to be NULL so as to remove unnecessary
2447 indirection. This lets alternative implementations fallback to the
2448 default implementation more easily.
2451 *) Support for directoryName in GeneralName related extensions
2455 *) Make it possible to link applications using Makefile.shared.
2456 Make that possible even when linking against static libraries!
2459 *) Support for single pass processing for S/MIME signing. This now
2460 means that S/MIME signing can be done from a pipe, in addition
2461 cleartext signing (multipart/signed type) is effectively streaming
2462 and the signed data does not need to be all held in memory.
2464 This is done with a new flag PKCS7_STREAM. When this flag is set
2465 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2466 is done after the data is output (and digests calculated) in
2467 SMIME_write_PKCS7().
2470 *) Add full support for -rpath/-R, both in shared libraries and
2471 applications, at least on the platforms where it's known how
2475 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2476 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2477 will now compute a table of multiples of the generator that
2478 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2479 faster (notably in the case of a single point multiplication,
2480 scalar * generator).
2481 [Nils Larsch, Bodo Moeller]
2483 *) IPv6 support for certificate extensions. The various extensions
2484 which use the IP:a.b.c.d can now take IPv6 addresses using the
2485 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2489 *) Added an ENGINE that implements RSA by performing private key
2490 exponentiations with the GMP library. The conversions to and from
2491 GMP's mpz_t format aren't optimised nor are any montgomery forms
2492 cached, and on x86 it appears OpenSSL's own performance has caught up.
2493 However there are likely to be other architectures where GMP could
2494 provide a boost. This ENGINE is not built in by default, but it can be
2495 specified at Configure time and should be accompanied by the necessary
2496 linker additions, eg;
2497 ./config -DOPENSSL_USE_GMP -lgmp
2500 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2501 testing availability of engines with "-t" - the old behaviour is
2502 produced by increasing the feature's verbosity with "-tt".
2505 *) ECDSA routines: under certain error conditions uninitialized BN objects
2506 could be freed. Solution: make sure initialization is performed early
2507 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2511 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2512 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2513 software implementations. For DSA and DH, parameter generation can
2514 also be overriden by providing the appropriate method callbacks.
2517 *) Change the "progress" mechanism used in key-generation and
2518 primality testing to functions that take a new BN_GENCB pointer in
2519 place of callback/argument pairs. The new API functions have "_ex"
2520 postfixes and the older functions are reimplemented as wrappers for
2521 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2522 declarations of the old functions to help (graceful) attempts to
2523 migrate to the new functions. Also, the new key-generation API
2524 functions operate on a caller-supplied key-structure and return
2525 success/failure rather than returning a key or NULL - this is to
2526 help make "keygen" another member function of RSA_METHOD etc.
2528 Example for using the new callback interface:
2530 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2534 BN_GENCB_set(&my_cb, my_callback, my_arg);
2536 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2537 /* For the meaning of a, b in calls to my_callback(), see the
2538 * documentation of the function that calls the callback.
2539 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2540 * my_callback should return 1 if it wants BN_is_prime_ex()
2541 * to continue, or 0 to stop.
2546 *) Change the ZLIB compression method to be stateful, and make it
2547 available to TLS with the number defined in
2548 draft-ietf-tls-compression-04.txt.
2551 *) Add the ASN.1 structures and functions for CertificatePair, which
2552 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2554 CertificatePair ::= SEQUENCE {
2555 forward [0] Certificate OPTIONAL,
2556 reverse [1] Certificate OPTIONAL,
2557 -- at least one of the pair shall be present -- }
2559 Also implement the PEM functions to read and write certificate
2560 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2562 This needed to be defined, mostly for the sake of the LDAP
2563 attribute crossCertificatePair, but may prove useful elsewhere as
2567 *) Make it possible to inhibit symlinking of shared libraries in
2568 Makefile.shared, for Cygwin's sake.
2571 *) Extend the BIGNUM API by creating a function
2572 void BN_set_negative(BIGNUM *a, int neg);
2573 and a macro that behave like
2574 int BN_is_negative(const BIGNUM *a);
2576 to avoid the need to access 'a->neg' directly in applications.
2579 *) Implement fast modular reduction for pseudo-Mersenne primes
2580 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2581 EC_GROUP_new_curve_GFp() will now automatically use this
2583 [Nils Larsch <nla@trustcenter.de>]
2585 *) Add new lock type (CRYPTO_LOCK_BN).
2588 *) Change the ENGINE framework to automatically load engines
2589 dynamically from specific directories unless they could be
2590 found to already be built in or loaded. Move all the
2591 current engines except for the cryptodev one to a new
2593 The engines in engines/ are built as shared libraries if
2594 the "shared" options was given to ./Configure or ./config.
2595 Otherwise, they are inserted in libcrypto.a.
2596 /usr/local/ssl/engines is the default directory for dynamic
2597 engines, but that can be overriden at configure time through
2598 the usual use of --prefix and/or --openssldir, and at run
2599 time with the environment variable OPENSSL_ENGINES.
2600 [Geoff Thorpe and Richard Levitte]
2602 *) Add Makefile.shared, a helper makefile to build shared
2603 libraries. Addapt Makefile.org.
2606 *) Add version info to Win32 DLLs.
2607 [Peter 'Luna' Runestig" <peter@runestig.com>]
2609 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2610 can be added using this API to created arbitrary PKCS#12
2611 files while avoiding the low level API.
2613 New options to PKCS12_create(), key or cert can be NULL and
2614 will then be omitted from the output file. The encryption
2615 algorithm NIDs can be set to -1 for no encryption, the mac
2616 iteration count can be set to 0 to omit the mac.
2618 Enhance pkcs12 utility by making the -nokeys and -nocerts
2619 options work when creating a PKCS#12 file. New option -nomac
2620 to omit the mac, NONE can be set for an encryption algorithm.
2621 New code is modified to use the enhanced PKCS12_create()
2622 instead of the low level API.
2625 *) Extend ASN1 encoder to support indefinite length constructed
2626 encoding. This can output sequences tags and octet strings in
2627 this form. Modify pk7_asn1.c to support indefinite length
2628 encoding. This is experimental and needs additional code to
2629 be useful, such as an ASN1 bio and some enhanced streaming
2632 Extend template encode functionality so that tagging is passed
2633 down to the template encoder.
2636 *) Let 'openssl req' fail if an argument to '-newkey' is not
2637 recognized instead of using RSA as a default.
2640 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2641 As these are not official, they are not included in "ALL";
2642 the "ECCdraft" ciphersuite group alias can be used to select them.
2643 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2645 *) Add ECDH engine support.
2646 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2648 *) Add ECDH in new directory crypto/ecdh/.
2649 [Douglas Stebila (Sun Microsystems Laboratories)]
2651 *) Let BN_rand_range() abort with an error after 100 iterations
2652 without success (which indicates a broken PRNG).
2655 *) Change BN_mod_sqrt() so that it verifies that the input value
2656 is really the square of the return value. (Previously,
2657 BN_mod_sqrt would show GIGO behaviour.)
2660 *) Add named elliptic curves over binary fields from X9.62, SECG,
2661 and WAP/WTLS; add OIDs that were still missing.
2663 [Sheueling Chang Shantz and Douglas Stebila
2664 (Sun Microsystems Laboratories)]
2666 *) Extend the EC library for elliptic curves over binary fields
2667 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2670 EC_GF2m_simple_method
2674 EC_GROUP_new_curve_GF2m
2675 EC_GROUP_set_curve_GF2m
2676 EC_GROUP_get_curve_GF2m
2677 EC_POINT_set_affine_coordinates_GF2m
2678 EC_POINT_get_affine_coordinates_GF2m
2679 EC_POINT_set_compressed_coordinates_GF2m
2681 Point compression for binary fields is disabled by default for
2682 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2685 As binary polynomials are represented as BIGNUMs, various members
2686 of the EC_GROUP and EC_POINT data structures can be shared
2687 between the implementations for prime fields and binary fields;
2688 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2689 are essentially identical to their ..._GFp counterparts.
2690 (For simplicity, the '..._GFp' prefix has been dropped from
2691 various internal method names.)
2693 An internal 'field_div' method (similar to 'field_mul' and
2694 'field_sqr') has been added; this is used only for binary fields.
2696 [Sheueling Chang Shantz and Douglas Stebila
2697 (Sun Microsystems Laboratories)]
2699 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2700 through methods ('mul', 'precompute_mult').
2702 The generic implementations (now internally called 'ec_wNAF_mul'
2703 and 'ec_wNAF_precomputed_mult') remain the default if these
2704 methods are undefined.
2706 [Sheueling Chang Shantz and Douglas Stebila
2707 (Sun Microsystems Laboratories)]
2709 *) New function EC_GROUP_get_degree, which is defined through
2710 EC_METHOD. For curves over prime fields, this returns the bit
2711 length of the modulus.
2713 [Sheueling Chang Shantz and Douglas Stebila
2714 (Sun Microsystems Laboratories)]
2716 *) New functions EC_GROUP_dup, EC_POINT_dup.
2717 (These simply call ..._new and ..._copy).
2719 [Sheueling Chang Shantz and Douglas Stebila
2720 (Sun Microsystems Laboratories)]
2722 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2723 Polynomials are represented as BIGNUMs (where the sign bit is not
2724 used) in the following functions [macros]:
2727 BN_GF2m_sub [= BN_GF2m_add]
2728 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2729 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2730 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2732 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2733 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2734 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2735 BN_GF2m_cmp [= BN_ucmp]
2737 (Note that only the 'mod' functions are actually for fields GF(2^m).
2738 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2740 For some functions, an the irreducible polynomial defining a
2741 field can be given as an 'unsigned int[]' with strictly
2742 decreasing elements giving the indices of those bits that are set;
2743 i.e., p[] represents the polynomial
2744 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2746 p[0] > p[1] > ... > p[k] = 0.
2747 This applies to the following functions:
2752 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2753 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2755 BN_GF2m_mod_sqrt_arr
2756 BN_GF2m_mod_solve_quad_arr
2760 Conversion can be performed by the following functions:
2765 bntest.c has additional tests for binary polynomial arithmetic.
2767 Two implementations for BN_GF2m_mod_div() are available.
2768 The default algorithm simply uses BN_GF2m_mod_inv() and
2769 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2770 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2771 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2773 [Sheueling Chang Shantz and Douglas Stebila
2774 (Sun Microsystems Laboratories)]
2776 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2777 functionality is disabled at compile-time.
2778 [Douglas Stebila <douglas.stebila@sun.com>]
2780 *) Change default behaviour of 'openssl asn1parse' so that more
2781 information is visible when viewing, e.g., a certificate:
2783 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2784 mode the content of non-printable OCTET STRINGs is output in a
2785 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2786 avoid the appearance of a printable string.
2787 [Nils Larsch <nla@trustcenter.de>]
2789 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2791 EC_GROUP_set_asn1_flag()
2792 EC_GROUP_get_asn1_flag()
2793 EC_GROUP_set_point_conversion_form()
2794 EC_GROUP_get_point_conversion_form()
2795 These control ASN1 encoding details:
2796 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2797 has been set to OPENSSL_EC_NAMED_CURVE.
2798 - Points are encoded in uncompressed form by default; options for
2799 asn1_for are as for point2oct, namely
2800 POINT_CONVERSION_COMPRESSED
2801 POINT_CONVERSION_UNCOMPRESSED
2802 POINT_CONVERSION_HYBRID
2804 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2807 EC_GROUP_get0_seed()
2808 EC_GROUP_get_seed_len()
2809 This is used only for ASN1 purposes (so far).
2810 [Nils Larsch <nla@trustcenter.de>]
2812 *) Add 'field_type' member to EC_METHOD, which holds the NID
2813 of the appropriate field type OID. The new function
2814 EC_METHOD_get_field_type() returns this value.
2815 [Nils Larsch <nla@trustcenter.de>]
2820 EC_POINT_point2hex()
2821 EC_POINT_hex2point()
2822 providing useful interfaces to EC_POINT_point2oct() and
2823 EC_POINT_oct2point().
2824 [Nils Larsch <nla@trustcenter.de>]
2826 *) Change internals of the EC library so that the functions
2827 EC_GROUP_set_generator()
2828 EC_GROUP_get_generator()
2829 EC_GROUP_get_order()
2830 EC_GROUP_get_cofactor()
2831 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2832 to methods, which would lead to unnecessary code duplication when
2833 adding different types of curves.
2834 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2836 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2837 arithmetic, and such that modified wNAFs are generated
2838 (which avoid length expansion in many cases).
2841 *) Add a function EC_GROUP_check_discriminant() (defined via
2842 EC_METHOD) that verifies that the curve discriminant is non-zero.
2844 Add a function EC_GROUP_check() that makes some sanity tests
2845 on a EC_GROUP, its generator and order. This includes
2846 EC_GROUP_check_discriminant().
2847 [Nils Larsch <nla@trustcenter.de>]
2849 *) Add ECDSA in new directory crypto/ecdsa/.
2851 Add applications 'openssl ecparam' and 'openssl ecdsa'
2852 (these are based on 'openssl dsaparam' and 'openssl dsa').
2854 ECDSA support is also included in various other files across the
2855 library. Most notably,
2856 - 'openssl req' now has a '-newkey ecdsa:file' option;
2857 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2858 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2859 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2860 them suitable for ECDSA where domain parameters must be
2861 extracted before the specific public key;
2862 - ECDSA engine support has been added.
2863 [Nils Larsch <nla@trustcenter.de>]
2865 *) Include some named elliptic curves, and add OIDs from X9.62,
2866 SECG, and WAP/WTLS. Each curve can be obtained from the new
2868 EC_GROUP_new_by_curve_name(),
2869 and the list of available named curves can be obtained with
2870 EC_get_builtin_curves().
2871 Also add a 'curve_name' member to EC_GROUP objects, which can be
2873 EC_GROUP_set_curve_name()
2874 EC_GROUP_get_curve_name()
2875 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2877 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2878 was actually never needed) and in BN_mul(). The removal in BN_mul()
2879 required a small change in bn_mul_part_recursive() and the addition
2880 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2881 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2882 bn_sub_words() and bn_add_words() except they take arrays with
2886 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2888 *) Cleanse PEM buffers before freeing them since they may contain
2890 [Benjamin Bennett <ben@psc.edu>]
2892 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2893 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2894 authentication-only ciphersuites.
2897 *) Since AES128 and AES256 share a single mask bit in the logic of
2898 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2899 kludge to work properly if AES128 is available and AES256 isn't.
2902 *) Expand security boundary to match 1.1.1 module.
2905 *) Remove redundant features: hash file source, editing of test vectors
2906 modify fipsld to use external fips_premain.c signature.
2909 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2910 run algorithm test programs.
2913 *) Make algorithm test programs more tolerant of whitespace.
2916 *) Have SSL/TLS server implementation tolerate "mismatched" record
2917 protocol version while receiving ClientHello even if the
2918 ClientHello is fragmented. (The server can't insist on the
2919 particular protocol version it has chosen before the ServerHello
2920 message has informed the client about his choice.)
2923 *) Load error codes if they are not already present instead of using a
2924 static variable. This allows them to be cleanly unloaded and reloaded.
2927 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2929 *) Introduce limits to prevent malicious keys being able to
2930 cause a denial of service. (CVE-2006-2940)
2931 [Steve Henson, Bodo Moeller]
2933 *) Fix ASN.1 parsing of certain invalid structures that can result
2934 in a denial of service. (CVE-2006-2937) [Steve Henson]
2936 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2937 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2939 *) Fix SSL client code which could crash if connecting to a
2940 malicious SSLv2 server. (CVE-2006-4343)
2941 [Tavis Ormandy and Will Drewry, Google Security Team]
2943 *) Change ciphersuite string processing so that an explicit
2944 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2945 will no longer include "AES128-SHA"), and any other similar
2946 ciphersuite (same bitmap) from *other* protocol versions (so that
2947 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2948 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2949 changes from 0.9.8b and 0.9.8d.
2952 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2954 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2955 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2957 *) Change the Unix randomness entropy gathering to use poll() when
2958 possible instead of select(), since the latter has some
2959 undesirable limitations.
2960 [Darryl Miles via Richard Levitte and Bodo Moeller]
2962 *) Disable rogue ciphersuites:
2964 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2965 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2966 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2968 The latter two were purportedly from
2969 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2972 Also deactive the remaining ciphersuites from
2973 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2974 unofficial, and the ID has long expired.
2977 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2978 dual-core machines) and other potential thread-safety issues.
2981 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2983 *) Adapt fipsld and the build system to link against the validated FIPS
2984 module in FIPS mode.
2987 *) Fixes for VC++ 2005 build under Windows.
2990 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2991 from a Windows bash shell such as MSYS. It is autodetected from the
2992 "config" script when run from a VC++ environment. Modify standard VC++
2993 build to use fipscanister.o from the GNU make build.
2996 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2998 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2999 The value now differs depending on if you build for FIPS or not.
3000 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3001 safely run with a non-FIPSed libcrypto, as it may crash because of
3002 the difference induced by this change.
3005 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3007 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3008 (part of SSL_OP_ALL). This option used to disable the
3009 countermeasure against man-in-the-middle protocol-version
3010 rollback in the SSL 2.0 server implementation, which is a bad
3011 idea. (CVE-2005-2969)
3013 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3014 for Information Security, National Institute of Advanced Industrial
3015 Science and Technology [AIST], Japan)]
3017 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3018 mainly for FIPS compliance and not fully integrated at this stage.
3021 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3022 the exponentiation using a fixed-length exponent. (Otherwise,
3023 the information leaked through timing could expose the secret key
3024 after many signatures; cf. Bleichenbacher's attack on DSA with
3028 *) Make a new fixed-window mod_exp implementation the default for
3029 RSA, DSA, and DH private-key operations so that the sequence of
3030 squares and multiplies and the memory access pattern are
3031 independent of the particular secret key. This will mitigate
3032 cache-timing and potential related attacks.
3034 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3035 and this is automatically used by BN_mod_exp_mont() if the new flag
3036 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3037 will use this BN flag for private exponents unless the flag
3038 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3039 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3041 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3043 *) Change the client implementation for SSLv23_method() and
3044 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3045 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3046 (Previously, the SSL 2.0 backwards compatible Client Hello
3047 message format would be used even with SSL_OP_NO_SSLv2.)
3050 *) Add support for smime-type MIME parameter in S/MIME messages which some
3054 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3055 a threadsafe manner. Modify rsa code to use new function and add calls
3056 to dsa and dh code (which had race conditions before).
3059 *) Include the fixed error library code in the C error file definitions
3060 instead of fixing them up at runtime. This keeps the error code
3061 structures constant.
3064 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3066 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3069 *) Fixes for newer kerberos headers. NB: the casts are needed because
3070 the 'length' field is signed on one version and unsigned on another
3071 with no (?) obvious way to tell the difference, without these VC++
3072 complains. Also the "definition" of FAR (blank) is no longer included
3073 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3074 some needed definitions.
3077 *) Undo Cygwin change.
3080 *) Added support for proxy certificates according to RFC 3820.
3081 Because they may be a security thread to unaware applications,
3082 they must be explicitely allowed in run-time. See
3083 docs/HOWTO/proxy_certificates.txt for further information.
3086 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3088 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3089 server and client random values. Previously
3090 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3091 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3093 This change has negligible security impact because:
3095 1. Server and client random values still have 24 bytes of pseudo random
3098 2. Server and client random values are sent in the clear in the initial
3101 3. The master secret is derived using the premaster secret (48 bytes in
3102 size for static RSA ciphersuites) as well as client server and random
3105 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3108 [Stephen Henson, reported by UK NISCC]
3110 *) Use Windows randomness collection on Cygwin.
3113 *) Fix hang in EGD/PRNGD query when communication socket is closed
3114 prematurely by EGD/PRNGD.
3115 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3117 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3120 *) Back-port of selected performance improvements from development
3121 branch, as well as improved support for PowerPC platforms.
3124 *) Add lots of checks for memory allocation failure, error codes to indicate
3125 failure and freeing up memory if a failure occurs.
3126 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3128 *) Add new -passin argument to dgst.
3131 *) Perform some character comparisons of different types in X509_NAME_cmp:
3132 this is needed for some certificates that reencode DNs into UTF8Strings
3133 (in violation of RFC3280) and can't or wont issue name rollover
3137 *) Make an explicit check during certificate validation to see that
3138 the CA setting in each certificate on the chain is correct. As a
3139 side effect always do the following basic checks on extensions,
3140 not just when there's an associated purpose to the check:
3142 - if there is an unhandled critical extension (unless the user
3143 has chosen to ignore this fault)
3144 - if the path length has been exceeded (if one is set at all)
3145 - that certain extensions fit the associated purpose (if one has
3149 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3151 *) Avoid a race condition when CRLs are checked in a multi threaded
3152 environment. This would happen due to the reordering of the revoked
3153 entries during signature checking and serial number lookup. Now the
3154 encoding is cached and the serial number sort performed under a lock.
3155 Add new STACK function sk_is_sorted().
3158 *) Add Delta CRL to the extension code.
3161 *) Various fixes to s3_pkt.c so alerts are sent properly.
3162 [David Holmes <d.holmes@f5.com>]
3164 *) Reduce the chances of duplicate issuer name and serial numbers (in
3165 violation of RFC3280) using the OpenSSL certificate creation utilities.
3166 This is done by creating a random 64 bit value for the initial serial
3167 number when a serial number file is created or when a self signed
3168 certificate is created using 'openssl req -x509'. The initial serial
3169 number file is created using 'openssl x509 -next_serial' in CA.pl
3170 rather than being initialized to 1.
3173 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3175 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3176 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3177 [Joe Orton, Steve Henson]
3179 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3181 [Joe Orton, Steve Henson]
3183 *) Make it possible to have multiple active certificates with the same
3184 subject in the CA index file. This is done only if the keyword
3185 'unique_subject' is set to 'no' in the main CA section (default
3186 if 'CA_default') of the configuration file. The value is saved
3187 with the database itself in a separate index attribute file,
3188 named like the index file with '.attr' appended to the name.
3191 *) X509 verify fixes. Disable broken certificate workarounds when
3192 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3193 keyUsage extension present. Don't accept CRLs with unhandled critical
3194 extensions: since verify currently doesn't process CRL extensions this
3195 rejects a CRL with *any* critical extensions. Add new verify error codes
3199 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3200 A clarification of RFC2560 will require the use of OCTET STRINGs and
3201 some implementations cannot handle the current raw format. Since OpenSSL
3202 copies and compares OCSP nonces as opaque blobs without any attempt at
3203 parsing them this should not create any compatibility issues.
3206 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3207 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3208 this HMAC (and other) operations are several times slower than OpenSSL
3212 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3213 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3215 *) Use the correct content when signing type "other".
3218 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3220 *) Fix various bugs revealed by running the NISCC test suite:
3222 Stop out of bounds reads in the ASN1 code when presented with
3223 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3225 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3227 If verify callback ignores invalid public key errors don't try to check
3228 certificate signature with the NULL public key.
3232 *) New -ignore_err option in ocsp application to stop the server
3233 exiting on the first error in a request.
3236 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3237 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3241 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3242 extra data after the compression methods not only for TLS 1.0
3243 but also for SSL 3.0 (as required by the specification).
3244 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3246 *) Change X509_certificate_type() to mark the key as exported/exportable
3247 when it's 512 *bits* long, not 512 bytes.
3250 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3251 blocks during encryption.
3254 *) Various fixes to base64 BIO and non blocking I/O. On write
3255 flushes were not handled properly if the BIO retried. On read
3256 data was not being buffered properly and had various logic bugs.
3257 This also affects blocking I/O when the data being decoded is a
3261 *) Various S/MIME bugfixes and compatibility changes:
3262 output correct application/pkcs7 MIME type if
3263 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3264 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3265 of files as .eml work). Correctly handle very long lines in MIME
3269 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3271 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3272 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3273 a protocol version number mismatch like a decryption error
3274 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3277 *) Turn on RSA blinding by default in the default implementation
3278 to avoid a timing attack. Applications that don't want it can call
3279 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3280 They would be ill-advised to do so in most cases.
3281 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3283 *) Change RSA blinding code so that it works when the PRNG is not
3284 seeded (in this case, the secret RSA exponent is abused as
3285 an unpredictable seed -- if it is not unpredictable, there
3286 is no point in blinding anyway). Make RSA blinding thread-safe
3287 by remembering the creator's thread ID in rsa->blinding and
3288 having all other threads use local one-time blinding factors
3289 (this requires more computation than sharing rsa->blinding, but
3290 avoids excessive locking; and if an RSA object is not shared
3291 between threads, blinding will still be very fast).
3294 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3295 ENGINE as defaults for all supported algorithms irrespective of
3296 the 'flags' parameter. 'flags' is now honoured, so applications
3297 should make sure they are passing it correctly.
3300 *) Target "mingw" now allows native Windows code to be generated in
3301 the Cygwin environment as well as with the MinGW compiler.
3304 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3306 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3307 via timing by performing a MAC computation even if incorrrect
3308 block cipher padding has been found. This is a countermeasure
3309 against active attacks where the attacker has to distinguish
3310 between bad padding and a MAC verification error. (CVE-2003-0078)
3312 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3313 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3314 Martin Vuagnoux (EPFL, Ilion)]
3316 *) Make the no-err option work as intended. The intention with no-err
3317 is not to have the whole error stack handling routines removed from
3318 libcrypto, it's only intended to remove all the function name and
3319 reason texts, thereby removing some of the footprint that may not
3320 be interesting if those errors aren't displayed anyway.
3322 NOTE: it's still possible for any application or module to have it's
3323 own set of error texts inserted. The routines are there, just not
3324 used by default when no-err is given.
3327 *) Add support for FreeBSD on IA64.
3328 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3330 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3331 Kerberos function mit_des_cbc_cksum(). Before this change,
3332 the value returned by DES_cbc_cksum() was like the one from
3333 mit_des_cbc_cksum(), except the bytes were swapped.
3334 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3336 *) Allow an application to disable the automatic SSL chain building.
3337 Before this a rather primitive chain build was always performed in
3338 ssl3_output_cert_chain(): an application had no way to send the
3339 correct chain if the automatic operation produced an incorrect result.
3341 Now the chain builder is disabled if either:
3343 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3345 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3347 The reasoning behind this is that an application would not want the
3348 auto chain building to take place if extra chain certificates are
3349 present and it might also want a means of sending no additional
3350 certificates (for example the chain has two certificates and the
3354 *) Add the possibility to build without the ENGINE framework.
3355 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3357 *) Under Win32 gmtime() can return NULL: check return value in
3358 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3361 *) DSA routines: under certain error conditions uninitialized BN objects
3362 could be freed. Solution: make sure initialization is performed early
3363 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3364 Nils Larsch <nla@trustcenter.de> via PR#459)
3367 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3368 checked on reconnect on the client side, therefore session resumption
3369 could still fail with a "ssl session id is different" error. This
3370 behaviour is masked when SSL_OP_ALL is used due to
3371 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3372 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3373 followup to PR #377.
3376 *) IA-32 assembler support enhancements: unified ELF targets, support
3377 for SCO/Caldera platforms, fix for Cygwin shared build.
3380 *) Add support for FreeBSD on sparc64. As a consequence, support for
3381 FreeBSD on non-x86 processors is separate from x86 processors on
3382 the config script, much like the NetBSD support.
3383 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3385 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3387 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3390 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3391 code (06) was taken as the first octet of the session ID and the last
3392 octet was ignored consequently. As a result SSLv2 client side session
3393 caching could not have worked due to the session ID mismatch between
3395 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3399 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3400 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3404 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3405 seems that in spite of existing for more than a year, many application
3406 author have done nothing to provide the necessary callbacks, which
3407 means that this particular engine will not work properly anywhere.
3408 This is a very unfortunate situation which forces us, in the name
3409 of usability, to give the hw_ncipher.c a static lock, which is part
3411 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3412 appear in 0.9.8 or later. We EXPECT application authors to have
3413 dealt properly with this when 0.9.8 is released (unless we actually
3414 make such changes in the libcrypto locking code that changes will
3415 have to be made anyway).
3418 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3419 octets have been read, EOF or an error occurs. Without this change
3420 some truncated ASN1 structures will not produce an error.
3423 *) Disable Heimdal support, since it hasn't been fully implemented.
3424 Still give the possibility to force the use of Heimdal, but with
3425 warnings and a request that patches get sent to openssl-dev.
3428 *) Add the VC-CE target, introduce the WINCE sysname, and add
3429 INSTALL.WCE and appropriate conditionals to make it build.
3430 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3432 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3433 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3434 edit numbers of the version.
3435 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3437 *) Introduce safe string copy and catenation functions
3438 (BUF_strlcpy() and BUF_strlcat()).
3439 [Ben Laurie (CHATS) and Richard Levitte]
3441 *) Avoid using fixed-size buffers for one-line DNs.
3442 [Ben Laurie (CHATS)]
3444 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3445 resizing buffers containing secrets, and use where appropriate.
3446 [Ben Laurie (CHATS)]
3448 *) Avoid using fixed size buffers for configuration file location.
3449 [Ben Laurie (CHATS)]
3451 *) Avoid filename truncation for various CA files.
3452 [Ben Laurie (CHATS)]
3454 *) Use sizeof in preference to magic numbers.
3455 [Ben Laurie (CHATS)]
3457 *) Avoid filename truncation in cert requests.
3458 [Ben Laurie (CHATS)]
3460 *) Add assertions to check for (supposedly impossible) buffer
3462 [Ben Laurie (CHATS)]
3464 *) Don't cache truncated DNS entries in the local cache (this could
3465 potentially lead to a spoofing attack).
3466 [Ben Laurie (CHATS)]
3468 *) Fix various buffers to be large enough for hex/decimal
3469 representations in a platform independent manner.
3470 [Ben Laurie (CHATS)]
3472 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3473 resizing buffers containing secrets, and use where appropriate.
3474 [Ben Laurie (CHATS)]
3476 *) Add BIO_indent() to avoid much slightly worrying code to do
3478 [Ben Laurie (CHATS)]
3480 *) Convert sprintf()/BIO_puts() to BIO_printf().
3481 [Ben Laurie (CHATS)]
3483 *) buffer_gets() could terminate with the buffer only half
3485 [Ben Laurie (CHATS)]
3487 *) Add assertions to prevent user-supplied crypto functions from
3488 overflowing internal buffers by having large block sizes, etc.
3489 [Ben Laurie (CHATS)]
3491 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3493 [Ben Laurie (CHATS)]
3495 *) Eliminate unused copy of key in RC4.
3496 [Ben Laurie (CHATS)]
3498 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3499 [Ben Laurie (CHATS)]
3501 *) Fix off-by-one error in EGD path.
3502 [Ben Laurie (CHATS)]
3504 *) If RANDFILE path is too long, ignore instead of truncating.
3505 [Ben Laurie (CHATS)]
3507 *) Eliminate unused and incorrectly sized X.509 structure
3509 [Ben Laurie (CHATS)]
3511 *) Eliminate unused and dangerous function knumber().
3512 [Ben Laurie (CHATS)]
3514 *) Eliminate unused and dangerous structure, KSSL_ERR.
3515 [Ben Laurie (CHATS)]
3517 *) Protect against overlong session ID context length in an encoded
3518 session object. Since these are local, this does not appear to be
3520 [Ben Laurie (CHATS)]
3522 *) Change from security patch (see 0.9.6e below) that did not affect
3523 the 0.9.6 release series:
3525 Remote buffer overflow in SSL3 protocol - an attacker could
3526 supply an oversized master key in Kerberos-enabled versions.
3528 [Ben Laurie (CHATS)]
3530 *) Change the SSL kerb5 codes to match RFC 2712.
3533 *) Make -nameopt work fully for req and add -reqopt switch.
3534 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3536 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3537 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3539 *) Make sure tests can be performed even if the corresponding algorithms
3540 have been removed entirely. This was also the last step to make
3541 OpenSSL compilable with DJGPP under all reasonable conditions.
3542 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3544 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3545 to allow version independent disabling of normally unselected ciphers,
3546 which may be activated as a side-effect of selecting a single cipher.
3548 (E.g., cipher list string "RSA" enables ciphersuites that are left
3549 out of "ALL" because they do not provide symmetric encryption.
3550 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3551 [Lutz Jaenicke, Bodo Moeller]
3553 *) Add appropriate support for separate platform-dependent build
3554 directories. The recommended way to make a platform-dependent
3555 build directory is the following (tested on Linux), maybe with
3558 # Place yourself outside of the OpenSSL source tree. In
3559 # this example, the environment variable OPENSSL_SOURCE
3560 # is assumed to contain the absolute OpenSSL source directory.
3561 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3562 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3563 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3564 mkdir -p `dirname $F`
3565 ln -s $OPENSSL_SOURCE/$F $F
3568 To be absolutely sure not to disturb the source tree, a "make clean"
3569 is a good thing. If it isn't successfull, don't worry about it,
3570 it probably means the source directory is very clean.
3573 *) Make sure any ENGINE control commands make local copies of string
3574 pointers passed to them whenever necessary. Otherwise it is possible
3575 the caller may have overwritten (or deallocated) the original string
3576 data when a later ENGINE operation tries to use the stored values.
3577 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3579 *) Improve diagnostics in file reading and command-line digests.
3580 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3582 *) Add AES modes CFB and OFB to the object database. Correct an
3583 error in AES-CFB decryption.
3586 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3587 allows existing EVP_CIPHER_CTX structures to be reused after
3588 calling EVP_*Final(). This behaviour is used by encryption
3589 BIOs and some applications. This has the side effect that
3590 applications must explicitly clean up cipher contexts with
3591 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3594 *) Check the values of dna and dnb in bn_mul_recursive before calling
3595 bn_mul_comba (a non zero value means the a or b arrays do not contain
3596 n2 elements) and fallback to bn_mul_normal if either is not zero.
3599 *) Fix escaping of non-ASCII characters when using the -subj option
3600 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3603 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3604 form for "surname", serialNumber has no short form.
3605 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3606 therefore remove "mail" short name for "internet 7".
3607 The OID for unique identifiers in X509 certificates is
3608 x500UniqueIdentifier, not uniqueIdentifier.
3609 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3612 *) Add an "init" command to the ENGINE config module and auto initialize
3613 ENGINEs. Without any "init" command the ENGINE will be initialized
3614 after all ctrl commands have been executed on it. If init=1 the
3615 ENGINE is initailized at that point (ctrls before that point are run
3616 on the uninitialized ENGINE and after on the initialized one). If
3617 init=0 then the ENGINE will not be iniatialized at all.
3620 *) Fix the 'app_verify_callback' interface so that the user-defined
3621 argument is actually passed to the callback: In the
3622 SSL_CTX_set_cert_verify_callback() prototype, the callback
3623 declaration has been changed from
3626 int (*cb)(X509_STORE_CTX *,void *);
3627 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3628 i=s->ctx->app_verify_callback(&ctx)
3629 has been changed into
3630 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3632 To update applications using SSL_CTX_set_cert_verify_callback(),
3633 a dummy argument can be added to their callback functions.
3634 [D. K. Smetters <smetters@parc.xerox.com>]
3636 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3637 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3639 *) Add and OPENSSL_LOAD_CONF define which will cause
3640 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3641 This allows older applications to transparently support certain
3642 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3643 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3644 load the config file and OPENSSL_add_all_algorithms_conf() which will
3645 always load it have also been added.
3648 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3649 Adjust NIDs and EVP layer.
3650 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3652 *) Config modules support in openssl utility.
3654 Most commands now load modules from the config file,
3655 though in a few (such as version) this isn't done
3656 because it couldn't be used for anything.
3658 In the case of ca and req the config file used is
3659 the same as the utility itself: that is the -config
3660 command line option can be used to specify an
3664 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3665 use "openssl_conf" if filename is NULL use default openssl config file.
3668 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3669 config section name. Add a new flag to tolerate a missing config file
3670 and move code to CONF_modules_load_file().
3673 *) Support for crypto accelerator cards from Accelerated Encryption
3674 Processing, www.aep.ie. (Use engine 'aep')
3675 The support was copied from 0.9.6c [engine] and adapted/corrected
3676 to work with the new engine framework.
3677 [AEP Inc. and Richard Levitte]
3679 *) Support for SureWare crypto accelerator cards from Baltimore
3680 Technologies. (Use engine 'sureware')
3681 The support was copied from 0.9.6c [engine] and adapted
3682 to work with the new engine framework.
3685 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3686 make the newer ENGINE framework commands for the CHIL engine work.
3687 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3689 *) Make it possible to produce shared libraries on ReliantUNIX.
3690 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3692 *) Add the configuration target debug-linux-ppro.
3693 Make 'openssl rsa' use the general key loading routines
3694 implemented in apps.c, and make those routines able to
3695 handle the key format FORMAT_NETSCAPE and the variant
3697 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3699 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3700 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3702 *) Add -keyform to rsautl, and document -engine.
3703 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3705 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3706 BIO_R_NO_SUCH_FILE error code rather than the generic
3707 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3710 *) Add new functions
3712 ERR_peek_last_error_line
3713 ERR_peek_last_error_line_data.
3714 These are similar to
3717 ERR_peek_error_line_data,
3718 but report on the latest error recorded rather than the first one
3719 still in the error queue.
3720 [Ben Laurie, Bodo Moeller]
3722 *) default_algorithms option in ENGINE config module. This allows things
3724 default_algorithms = ALL
3725 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3728 *) Prelminary ENGINE config module.
3731 *) New experimental application configuration code.
3734 *) Change the AES code to follow the same name structure as all other
3735 symmetric ciphers, and behave the same way. Move everything to
3736 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3737 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3739 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3740 [Ben Laurie and Theo de Raadt]
3742 *) Add option to output public keys in req command.
3743 [Massimiliano Pala madwolf@openca.org]
3745 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3746 (up to about 10% better than before for P-192 and P-224).
3749 *) New functions/macros
3751 SSL_CTX_set_msg_callback(ctx, cb)
3752 SSL_CTX_set_msg_callback_arg(ctx, arg)
3753 SSL_set_msg_callback(ssl, cb)
3754 SSL_set_msg_callback_arg(ssl, arg)
3756 to request calling a callback function
3758 void cb(int write_p, int version, int content_type,
3759 const void *buf, size_t len, SSL *ssl, void *arg)
3761 whenever a protocol message has been completely received
3762 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3763 protocol version according to which the SSL library interprets
3764 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3765 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3766 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3767 specification (change_cipher_spec(20), alert(21), handshake(22)).
3768 'buf' and 'len' point to the actual message, 'ssl' to the
3769 SSL object, and 'arg' is the application-defined value set by
3770 SSL[_CTX]_set_msg_callback_arg().
3772 'openssl s_client' and 'openssl s_server' have new '-msg' options
3773 to enable a callback that displays all protocol messages.
3776 *) Change the shared library support so shared libraries are built as
3777 soon as the corresponding static library is finished, and thereby get
3778 openssl and the test programs linked against the shared library.
3779 This still only happens when the keyword "shard" has been given to
3780 the configuration scripts.
3782 NOTE: shared library support is still an experimental thing, and
3783 backward binary compatibility is still not guaranteed.
3784 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3786 *) Add support for Subject Information Access extension.
3787 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3789 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3790 additional bytes when new memory had to be allocated, not just
3791 when reusing an existing buffer.
3794 *) New command line and configuration option 'utf8' for the req command.
3795 This allows field values to be specified as UTF8 strings.
3798 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3799 runs for the former and machine-readable output for the latter.
3802 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3803 of the e-mail address in the DN (i.e., it will go into a certificate
3804 extension only). The new configuration file option 'email_in_dn = no'
3805 has the same effect.
3806 [Massimiliano Pala madwolf@openca.org]
3808 *) Change all functions with names starting with des_ to be starting
3809 with DES_ instead. Add wrappers that are compatible with libdes,
3810 but are named _ossl_old_des_*. Finally, add macros that map the
3811 des_* symbols to the corresponding _ossl_old_des_* if libdes
3812 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3813 desired, the des_* symbols will be mapped to DES_*, with one
3816 Since we provide two compatibility mappings, the user needs to
3817 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3818 compatibility is desired. The default (i.e., when that macro
3819 isn't defined) is OpenSSL 0.9.6c compatibility.
3821 There are also macros that enable and disable the support of old
3822 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3823 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3824 are defined, the default will apply: to support the old des routines.
3826 In either case, one must include openssl/des.h to get the correct
3827 definitions. Do not try to just include openssl/des_old.h, that
3830 NOTE: This is a major break of an old API into a new one. Software
3831 authors are encouraged to switch to the DES_ style functions. Some
3832 time in the future, des_old.h and the libdes compatibility functions
3833 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3834 default), and then completely removed.
3837 *) Test for certificates which contain unsupported critical extensions.
3838 If such a certificate is found during a verify operation it is
3839 rejected by default: this behaviour can be overridden by either
3840 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3841 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3842 X509_supported_extension() has also been added which returns 1 if a
3843 particular extension is supported.
3846 *) Modify the behaviour of EVP cipher functions in similar way to digests
3847 to retain compatibility with existing code.
3850 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3851 compatibility with existing code. In particular the 'ctx' parameter does
3852 not have to be to be initialized before the call to EVP_DigestInit() and
3853 it is tidied up after a call to EVP_DigestFinal(). New function
3854 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3855 EVP_MD_CTX_copy() changed to not require the destination to be
3856 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3857 requires the destination to be valid.
3859 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3860 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3863 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3864 so that complete 'Handshake' protocol structures are kept in memory
3865 instead of overwriting 'msg_type' and 'length' with 'body' data.
3868 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3869 [Massimo Santin via Richard Levitte]
3871 *) Major restructuring to the underlying ENGINE code. This includes
3872 reduction of linker bloat, separation of pure "ENGINE" manipulation
3873 (initialisation, etc) from functionality dealing with implementations
3874 of specific crypto iterfaces. This change also introduces integrated
3875 support for symmetric ciphers and digest implementations - so ENGINEs
3876 can now accelerate these by providing EVP_CIPHER and EVP_MD
3877 implementations of their own. This is detailed in crypto/engine/README
3878 as it couldn't be adequately described here. However, there are a few
3879 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3880 were changed in the original introduction of ENGINE code have now
3881 reverted back - the hooking from this code to ENGINE is now a good
3882 deal more passive and at run-time, operations deal directly with
3883 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3884 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3885 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3886 they were not being used by the framework as there is no concept of a
3887 BIGNUM_METHOD and they could not be generalised to the new
3888 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3889 ENGINE_cpy() has been removed as it cannot be consistently defined in
3893 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3896 *) Change mkdef.pl to sort symbols that get the same entry number,
3897 and make sure the automatically generated functions ERR_load_*
3898 become part of libeay.num as well.
3901 *) New function SSL_renegotiate_pending(). This returns true once
3902 renegotiation has been requested (either SSL_renegotiate() call
3903 or HelloRequest/ClientHello receveived from the peer) and becomes
3904 false once a handshake has been completed.
3905 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3906 sends a HelloRequest, but does not ensure that a handshake takes
3907 place. SSL_renegotiate_pending() is useful for checking if the
3908 client has followed the request.)
3911 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3912 By default, clients may request session resumption even during
3913 renegotiation (if session ID contexts permit); with this option,
3914 session resumption is possible only in the first handshake.
3916 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3917 more bits available for options that should not be part of
3918 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3921 *) Add some demos for certificate and certificate request creation.
3924 *) Make maximum certificate chain size accepted from the peer application
3925 settable (SSL*_get/set_max_cert_list()), as proposed by
3926 "Douglas E. Engert" <deengert@anl.gov>.
3929 *) Add support for shared libraries for Unixware-7
3930 (Boyd Lynn Gerber <gerberb@zenez.com>).
3933 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3934 be done prior to destruction. Use this to unload error strings from
3935 ENGINEs that load their own error strings. NB: This adds two new API
3936 functions to "get" and "set" this destroy handler in an ENGINE.
3939 *) Alter all existing ENGINE implementations (except "openssl" and
3940 "openbsd") to dynamically instantiate their own error strings. This
3941 makes them more flexible to be built both as statically-linked ENGINEs
3942 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3943 Also, add stub code to each that makes building them as self-contained
3944 shared-libraries easier (see README.ENGINE).
3947 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3948 implementations into applications that are completely implemented in
3949 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3950 commands that can be used to configure what shared-library to load and
3951 to control aspects of the way it is handled. Also, made an update to
3952 the README.ENGINE file that brings its information up-to-date and
3953 provides some information and instructions on the "dynamic" ENGINE
3954 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3957 *) Make it possible to unload ranges of ERR strings with a new
3958 "ERR_unload_strings" function.
3961 *) Add a copy() function to EVP_MD.
3964 *) Make EVP_MD routines take a context pointer instead of just the
3965 md_data void pointer.
3968 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3969 that the digest can only process a single chunk of data
3970 (typically because it is provided by a piece of
3971 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3972 is only going to provide a single chunk of data, and hence the
3973 framework needn't accumulate the data for oneshot drivers.
3976 *) As with "ERR", make it possible to replace the underlying "ex_data"
3977 functions. This change also alters the storage and management of global
3978 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3979 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3980 index counters. The API functions that use this state have been changed
3981 to take a "class_index" rather than pointers to the class's local STACK
3982 and counter, and there is now an API function to dynamically create new
3983 classes. This centralisation allows us to (a) plug a lot of the
3984 thread-safety problems that existed, and (b) makes it possible to clean
3985 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3986 such data would previously have always leaked in application code and
3987 workarounds were in place to make the memory debugging turn a blind eye
3988 to it. Application code that doesn't use this new function will still
3989 leak as before, but their memory debugging output will announce it now
3990 rather than letting it slide.
3992 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3993 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3994 has a return value to indicate success or failure.
3997 *) Make it possible to replace the underlying "ERR" functions such that the
3998 global state (2 LHASH tables and 2 locks) is only used by the "default"
3999 implementation. This change also adds two functions to "get" and "set"
4000 the implementation prior to it being automatically set the first time
4001 any other ERR function takes place. Ie. an application can call "get",
4002 pass the return value to a module it has just loaded, and that module
4003 can call its own "set" function using that value. This means the
4004 module's "ERR" operations will use (and modify) the error state in the
4005 application and not in its own statically linked copy of OpenSSL code.
4008 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4009 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4010 the operation, and provides a more encapsulated way for external code
4011 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4012 to use these functions rather than manually incrementing the counts.
4014 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4017 *) Add EVP test program.
4020 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4023 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4024 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4025 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4026 These allow a CRL to be built without having to access X509_CRL fields
4027 directly. Modify 'ca' application to use new functions.
4030 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4031 bug workarounds. Rollback attack detection is a security feature.
4032 The problem will only arise on OpenSSL servers when TLSv1 is not
4033 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4034 Software authors not wanting to support TLSv1 will have special reasons
4035 for their choice and can explicitly enable this option.
4036 [Bodo Moeller, Lutz Jaenicke]
4038 *) Rationalise EVP so it can be extended: don't include a union of
4039 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4040 (similar to those existing for EVP_CIPHER_CTX).
4045 EVP_MD_CTX_init(&md); /* new function call */
4046 EVP_DigestInit(&md, EVP_sha1());
4047 EVP_DigestUpdate(&md, in, len);
4048 EVP_DigestFinal(&md, out, NULL);
4049 EVP_MD_CTX_cleanup(&md); /* new function call */
4053 *) Make DES key schedule conform to the usual scheme, as well as
4054 correcting its structure. This means that calls to DES functions
4055 now have to pass a pointer to a des_key_schedule instead of a
4056 plain des_key_schedule (which was actually always a pointer
4059 des_key_schedule ks;
4061 des_set_key_checked(..., &ks);
4062 des_ncbc_encrypt(..., &ks, ...);
4064 (Note that a later change renames 'des_...' into 'DES_...'.)
4067 *) Initial reduction of linker bloat: the use of some functions, such as
4068 PEM causes large amounts of unused functions to be linked in due to
4069 poor organisation. For example pem_all.c contains every PEM function
4070 which has a knock on effect of linking in large amounts of (unused)
4071 ASN1 code. Grouping together similar functions and splitting unrelated
4072 functions prevents this.
4075 *) Cleanup of EVP macros.
4078 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4079 correct _ecb suffix.
4082 *) Add initial OCSP responder support to ocsp application. The
4083 revocation information is handled using the text based index
4084 use by the ca application. The responder can either handle
4085 requests generated internally, supplied in files (for example
4086 via a CGI script) or using an internal minimal server.
4089 *) Add configuration choices to get zlib compression for TLS.
4092 *) Changes to Kerberos SSL for RFC 2712 compliance:
4093 1. Implemented real KerberosWrapper, instead of just using
4094 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4095 2. Implemented optional authenticator field of KerberosWrapper.
4097 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4098 and authenticator structs; see crypto/krb5/.
4100 Generalized Kerberos calls to support multiple Kerberos libraries.
4101 [Vern Staats <staatsvr@asc.hpc.mil>,
4102 Jeffrey Altman <jaltman@columbia.edu>
4103 via Richard Levitte]
4105 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4106 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4107 values for each of the key sizes rather than having just
4108 parameters (and 'speed' generating keys each time).
4111 *) Speed up EVP routines.
4114 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4115 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4116 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4117 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4119 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4120 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4121 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4124 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4126 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4129 *) Added the OS2-EMX target.
4130 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4132 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4133 to support NCONF routines in extension code. New function CONF_set_nconf()
4134 to allow functions which take an NCONF to also handle the old LHASH
4135 structure: this means that the old CONF compatible routines can be
4136 retained (in particular wrt extensions) without having to duplicate the
4137 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4140 *) Enhance the general user interface with mechanisms for inner control
4141 and with possibilities to have yes/no kind of prompts.
4144 *) Change all calls to low level digest routines in the library and
4145 applications to use EVP. Add missing calls to HMAC_cleanup() and
4146 don't assume HMAC_CTX can be copied using memcpy().
4147 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4149 *) Add the possibility to control engines through control names but with
4150 arbitrary arguments instead of just a string.
4151 Change the key loaders to take a UI_METHOD instead of a callback
4152 function pointer. NOTE: this breaks binary compatibility with earlier
4153 versions of OpenSSL [engine].
4154 Adapt the nCipher code for these new conditions and add a card insertion
4158 *) Enhance the general user interface with mechanisms to better support
4159 dialog box interfaces, application-defined prompts, the possibility
4160 to use defaults (for example default passwords from somewhere else)
4161 and interrupts/cancellations.
4164 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4165 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4168 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4169 tidy up some unnecessarily weird code in 'sk_new()').
4170 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4172 *) Change the key loading routines for ENGINEs to use the same kind
4173 callback (pem_password_cb) as all other routines that need this
4177 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4178 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4179 than this minimum value is recommended.
4182 *) New random seeder for OpenVMS, using the system process statistics
4183 that are easily reachable.
4186 *) Windows apparently can't transparently handle global
4187 variables defined in DLLs. Initialisations such as:
4189 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4191 wont compile. This is used by the any applications that need to
4192 declare their own ASN1 modules. This was fixed by adding the option
4193 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4194 needed for static libraries under Win32.
4197 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4198 setting of purpose and trust fields. New X509_STORE trust and
4199 purpose functions and tidy up setting in other SSL functions.
4202 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4203 structure. These are inherited by X509_STORE_CTX when it is
4204 initialised. This allows various defaults to be set in the
4205 X509_STORE structure (such as flags for CRL checking and custom
4206 purpose or trust settings) for functions which only use X509_STORE_CTX
4207 internally such as S/MIME.
4209 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4210 trust settings if they are not set in X509_STORE. This allows X509_STORE
4211 purposes and trust (in S/MIME for example) to override any set by default.
4213 Add command line options for CRL checking to smime, s_client and s_server
4217 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4218 are set then the CRL is looked up in the X509_STORE structure and
4219 its validity and signature checked, then if the certificate is found
4220 in the CRL the verify fails with a revoked error.
4222 Various new CRL related callbacks added to X509_STORE_CTX structure.
4224 Command line options added to 'verify' application to support this.
4226 This needs some additional work, such as being able to handle multiple
4227 CRLs with different times, extension based lookup (rather than just
4228 by subject name) and ultimately more complete V2 CRL extension
4232 *) Add a general user interface API (crypto/ui/). This is designed
4233 to replace things like des_read_password and friends (backward
4234 compatibility functions using this new API are provided).
4235 The purpose is to remove prompting functions from the DES code
4236 section as well as provide for prompting through dialog boxes in
4237 a window system and the like.
4240 *) Add "ex_data" support to ENGINE so implementations can add state at a
4241 per-structure level rather than having to store it globally.
4244 *) Make it possible for ENGINE structures to be copied when retrieved by
4245 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4246 This causes the "original" ENGINE structure to act like a template,
4247 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4248 operational state can be localised to each ENGINE structure, despite the
4249 fact they all share the same "methods". New ENGINE structures returned in
4250 this case have no functional references and the return value is the single
4251 structural reference. This matches the single structural reference returned
4252 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4256 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4257 needs to match any other type at all we need to manually clear the
4261 *) Changes to the "openssl engine" utility to include;
4262 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4263 about an ENGINE's available control commands.
4264 - executing control commands from command line arguments using the
4265 '-pre' and '-post' switches. '-post' is only used if '-t' is
4266 specified and the ENGINE is successfully initialised. The syntax for
4267 the individual commands are colon-separated, for example;
4268 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4271 *) New dynamic control command support for ENGINEs. ENGINEs can now
4272 declare their own commands (numbers), names (strings), descriptions,
4273 and input types for run-time discovery by calling applications. A
4274 subset of these commands are implicitly classed as "executable"
4275 depending on their input type, and only these can be invoked through
4276 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4277 can be based on user input, config files, etc). The distinction is
4278 that "executable" commands cannot return anything other than a boolean
4279 result and can only support numeric or string input, whereas some
4280 discoverable commands may only be for direct use through
4281 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4282 pointers, or other custom uses. The "executable" commands are to
4283 support parameterisations of ENGINE behaviour that can be
4284 unambiguously defined by ENGINEs and used consistently across any
4285 OpenSSL-based application. Commands have been added to all the
4286 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4287 control over shared-library paths without source code alterations.
4290 *) Changed all ENGINE implementations to dynamically allocate their
4291 ENGINEs rather than declaring them statically. Apart from this being
4292 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4293 this also allows the implementations to compile without using the
4294 internal engine_int.h header.
4297 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4298 'const' value. Any code that should be able to modify a RAND_METHOD
4299 should already have non-const pointers to it (ie. they should only
4300 modify their own ones).
4303 *) Made a variety of little tweaks to the ENGINE code.
4304 - "atalla" and "ubsec" string definitions were moved from header files
4305 to C code. "nuron" string definitions were placed in variables
4306 rather than hard-coded - allowing parameterisation of these values
4307 later on via ctrl() commands.
4308 - Removed unused "#if 0"'d code.
4309 - Fixed engine list iteration code so it uses ENGINE_free() to release
4310 structural references.
4311 - Constified the RAND_METHOD element of ENGINE structures.
4312 - Constified various get/set functions as appropriate and added
4313 missing functions (including a catch-all ENGINE_cpy that duplicates
4314 all ENGINE values onto a new ENGINE except reference counts/state).
4315 - Removed NULL parameter checks in get/set functions. Setting a method
4316 or function to NULL is a way of cancelling out a previously set
4317 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4318 and doesn't justify the extra error symbols and code.
4319 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4320 flags from engine_int.h to engine.h.
4321 - Changed prototypes for ENGINE handler functions (init(), finish(),
4322 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4325 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4326 to the algorithm using long division. The binary algorithm can be
4327 used only if the modulus is odd. On 32-bit systems, it is faster
4328 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4329 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4330 up to 450 bits. In 64-bit environments, the binary algorithm
4331 appears to be advantageous for much longer moduli; here we use it
4332 for moduli up to 2048 bits.
4335 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4336 could not support the combine flag in choice fields.
4339 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4340 extensions from a certificate request to the certificate.
4343 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4344 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4345 file: this allows the display of the certificate about to be
4346 signed to be customised, to allow certain fields to be included
4347 or excluded and extension details. The old system didn't display
4348 multicharacter strings properly, omitted fields not in the policy
4349 and couldn't display additional details such as extensions.
4352 *) Function EC_POINTs_mul for multiple scalar multiplication
4353 of an arbitrary number of elliptic curve points
4354 \sum scalars[i]*points[i],
4355 optionally including the generator defined for the EC_GROUP:
4356 scalar*generator + \sum scalars[i]*points[i].
4358 EC_POINT_mul is a simple wrapper function for the typical case
4359 that the point list has just one item (besides the optional
4363 *) First EC_METHODs for curves over GF(p):
4365 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4366 operations and provides various method functions that can also
4367 operate with faster implementations of modular arithmetic.
4369 EC_GFp_mont_method() reuses most functions that are part of
4370 EC_GFp_simple_method, but uses Montgomery arithmetic.
4372 [Bodo Moeller; point addition and point doubling
4373 implementation directly derived from source code provided by
4374 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4376 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4377 crypto/ec/ec_lib.c):
4379 Curves are EC_GROUP objects (with an optional group generator)
4380 based on EC_METHODs that are built into the library.
4382 Points are EC_POINT objects based on EC_GROUP objects.
4384 Most of the framework would be able to handle curves over arbitrary
4385 finite fields, but as there are no obvious types for fields other
4386 than GF(p), some functions are limited to that for now.
4389 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4390 that the file contains a complete HTTP response.
4393 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4394 change the def and num file printf format specifier from "%-40sXXX"
4395 to "%-39s XXX". The latter will always guarantee a space after the
4396 field while the former will cause them to run together if the field
4397 is 40 of more characters long.
4400 *) Constify the cipher and digest 'method' functions and structures
4401 and modify related functions to take constant EVP_MD and EVP_CIPHER
4405 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4406 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4409 *) Modify EVP_Digest*() routines so they now return values. Although the
4410 internal software routines can never fail additional hardware versions
4414 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4416 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4417 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4420 ERR_R_NESTED_ASN1_ERROR
4422 ERR_R_MISSING_ASN1_EOS
4423 were 4 .. 9, conflicting with
4424 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4426 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4427 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4429 Add new error code 'ERR_R_INTERNAL_ERROR'.
4432 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4436 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4437 sets the subject name for a new request or supersedes the
4438 subject name in a given request. Formats that can be parsed are
4439 'CN=Some Name, OU=myOU, C=IT'
4441 'CN=Some Name/OU=myOU/C=IT'.
4443 Add options '-batch' and '-verbose' to 'openssl req'.
4444 [Massimiliano Pala <madwolf@hackmasters.net>]
4446 *) Introduce the possibility to access global variables through
4447 functions on platform were that's the best way to handle exporting
4448 global variables in shared libraries. To enable this functionality,
4449 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4450 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4451 is normally done by Configure or something similar).
4453 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4454 in the source file (foo.c) like this:
4456 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4457 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4459 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4460 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4462 OPENSSL_DECLARE_GLOBAL(int,foo);
4463 #define foo OPENSSL_GLOBAL_REF(foo)
4464 OPENSSL_DECLARE_GLOBAL(double,bar);
4465 #define bar OPENSSL_GLOBAL_REF(bar)
4467 The #defines are very important, and therefore so is including the
4468 header file everywhere where the defined globals are used.
4470 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4471 of ASN.1 items, but that structure is a bit different.
4473 The largest change is in util/mkdef.pl which has been enhanced with
4474 better and easier to understand logic to choose which symbols should
4475 go into the Windows .def files as well as a number of fixes and code
4476 cleanup (among others, algorithm keywords are now sorted
4477 lexicographically to avoid constant rewrites).
4480 *) In BN_div() keep a copy of the sign of 'num' before writing the
4481 result to 'rm' because if rm==num the value will be overwritten
4482 and produce the wrong result if 'num' is negative: this caused
4483 problems with BN_mod() and BN_nnmod().
4486 *) Function OCSP_request_verify(). This checks the signature on an
4487 OCSP request and verifies the signer certificate. The signer
4488 certificate is just checked for a generic purpose and OCSP request
4492 *) Add OCSP_check_validity() function to check the validity of OCSP
4493 responses. OCSP responses are prepared in real time and may only
4494 be a few seconds old. Simply checking that the current time lies
4495 between thisUpdate and nextUpdate max reject otherwise valid responses
4496 caused by either OCSP responder or client clock inaccuracy. Instead
4497 we allow thisUpdate and nextUpdate to fall within a certain period of
4498 the current time. The age of the response can also optionally be
4499 checked. Two new options -validity_period and -status_age added to
4503 *) If signature or public key algorithm is unrecognized print out its
4504 OID rather that just UNKNOWN.
4507 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4508 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4509 ID to be generated from the issuer certificate alone which can then be
4510 passed to OCSP_id_issuer_cmp().
4513 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4514 ASN1 modules to export functions returning ASN1_ITEM pointers
4515 instead of the ASN1_ITEM structures themselves. This adds several
4516 new macros which allow the underlying ASN1 function/structure to
4517 be accessed transparently. As a result code should not use ASN1_ITEM
4518 references directly (such as &X509_it) but instead use the relevant
4519 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4520 use of the new ASN1 code on platforms where exporting structures
4521 is problematical (for example in shared libraries) but exporting
4522 functions returning pointers to structures is not.
4525 *) Add support for overriding the generation of SSL/TLS session IDs.
4526 These callbacks can be registered either in an SSL_CTX or per SSL.
4527 The purpose of this is to allow applications to control, if they wish,
4528 the arbitrary values chosen for use as session IDs, particularly as it
4529 can be useful for session caching in multiple-server environments. A
4530 command-line switch for testing this (and any client code that wishes
4531 to use such a feature) has been added to "s_server".
4532 [Geoff Thorpe, Lutz Jaenicke]
4534 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4535 of the form '#if defined(...) || defined(...) || ...' and
4536 '#if !defined(...) && !defined(...) && ...'. This also avoids
4537 the growing number of special cases it was previously handling.
4540 *) Make all configuration macros available for application by making
4541 sure they are available in opensslconf.h, by giving them names starting
4542 with "OPENSSL_" to avoid conflicts with other packages and by making
4543 sure e_os2.h will cover all platform-specific cases together with
4545 Additionally, it is now possible to define configuration/platform-
4546 specific names (called "system identities"). In the C code, these
4547 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4548 macro with the name beginning with "OPENSSL_SYS_", which is determined
4549 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
4553 *) New option -set_serial to 'req' and 'x509' this allows the serial
4554 number to use to be specified on the command line. Previously self
4555 signed certificates were hard coded with serial number 0 and the
4556 CA options of 'x509' had to use a serial number in a file which was
4560 *) New options to 'ca' utility to support V2 CRL entry extensions.
4561 Currently CRL reason, invalidity date and hold instruction are
4562 supported. Add new CRL extensions to V3 code and some new objects.
4565 *) New function EVP_CIPHER_CTX_set_padding() this is used to
4566 disable standard block padding (aka PKCS#5 padding) in the EVP
4567 API, which was previously mandatory. This means that the data is
4568 not padded in any way and so the total length much be a multiple
4569 of the block size, otherwise an error occurs.
4572 *) Initial (incomplete) OCSP SSL support.
4575 *) New function OCSP_parse_url(). This splits up a URL into its host,
4576 port and path components: primarily to parse OCSP URLs. New -url
4577 option to ocsp utility.
4580 *) New nonce behavior. The return value of OCSP_check_nonce() now
4581 reflects the various checks performed. Applications can decide
4582 whether to tolerate certain situations such as an absent nonce
4583 in a response when one was present in a request: the ocsp application
4584 just prints out a warning. New function OCSP_add1_basic_nonce()
4585 this is to allow responders to include a nonce in a response even if
4586 the request is nonce-less.
4589 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
4590 skipped when using openssl x509 multiple times on a single input file,
4591 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
4594 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
4595 set string type: to handle setting ASN1_TIME structures. Fix ca
4596 utility to correctly initialize revocation date of CRLs.
4599 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
4600 the clients preferred ciphersuites and rather use its own preferences.
4601 Should help to work around M$ SGC (Server Gated Cryptography) bug in
4602 Internet Explorer by ensuring unchanged hash method during stepup.
4603 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
4606 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
4607 to aes and add a new 'exist' option to print out symbols that don't
4611 *) Additional options to ocsp utility to allow flags to be set and
4612 additional certificates supplied.
4615 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
4616 OCSP client a number of certificate to only verify the response
4620 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
4621 handle the new API. Currently only ECB, CBC modes supported. Add new
4624 Add TLS AES ciphersuites as described in RFC3268, "Advanced
4625 Encryption Standard (AES) Ciphersuites for Transport Layer
4626 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
4627 not enabled by default and were not part of the "ALL" ciphersuite
4628 alias because they were not yet official; they could be
4629 explicitly requested by specifying the "AESdraft" ciphersuite
4630 group alias. In the final release of OpenSSL 0.9.7, the group
4631 alias is called "AES" and is part of "ALL".)
4632 [Ben Laurie, Steve Henson, Bodo Moeller]
4634 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
4635 request to response.
4638 *) Functions for OCSP responders. OCSP_request_onereq_count(),
4639 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
4640 extract information from a certificate request. OCSP_response_create()
4641 creates a response and optionally adds a basic response structure.
4642 OCSP_basic_add1_status() adds a complete single response to a basic
4643 response and returns the OCSP_SINGLERESP structure just added (to allow
4644 extensions to be included for example). OCSP_basic_add1_cert() adds a
4645 certificate to a basic response and OCSP_basic_sign() signs a basic
4646 response with various flags. New helper functions ASN1_TIME_check()
4647 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
4648 (converts ASN1_TIME to GeneralizedTime).
4651 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
4652 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
4653 structure from a certificate. X509_pubkey_digest() digests the public_key
4654 contents: this is used in various key identifiers.
4657 *) Make sk_sort() tolerate a NULL argument.
4658 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
4660 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
4661 passed by the function are trusted implicitly. If any of them signed the
4662 response then it is assumed to be valid and is not verified.
4665 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
4666 to data. This was previously part of the PKCS7 ASN1 code. This
4667 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
4668 [Steve Henson, reported by Kenneth R. Robinette
4669 <support@securenetterm.com>]
4671 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
4672 routines: without these tracing memory leaks is very painful.
4673 Fix leaks in PKCS12 and PKCS7 routines.
4676 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
4677 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
4678 effectively meant GeneralizedTime would never be used. Now it
4679 is initialised to -1 but X509_time_adj() now has to check the value
4680 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
4681 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
4682 [Steve Henson, reported by Kenneth R. Robinette
4683 <support@securenetterm.com>]
4685 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
4686 result in a zero length in the ASN1_INTEGER structure which was
4687 not consistent with the structure when d2i_ASN1_INTEGER() was used
4688 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
4689 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
4690 where it did not print out a minus for negative ASN1_INTEGER.
4693 *) Add summary printout to ocsp utility. The various functions which
4694 convert status values to strings have been renamed to:
4695 OCSP_response_status_str(), OCSP_cert_status_str() and
4696 OCSP_crl_reason_str() and are no longer static. New options
4697 to verify nonce values and to disable verification. OCSP response
4698 printout format cleaned up.
4701 *) Add additional OCSP certificate checks. These are those specified
4702 in RFC2560. This consists of two separate checks: the CA of the
4703 certificate being checked must either be the OCSP signer certificate
4704 or the issuer of the OCSP signer certificate. In the latter case the
4705 OCSP signer certificate must contain the OCSP signing extended key
4706 usage. This check is performed by attempting to match the OCSP
4707 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
4708 in the OCSP_CERTID structures of the response.
4711 *) Initial OCSP certificate verification added to OCSP_basic_verify()
4712 and related routines. This uses the standard OpenSSL certificate
4713 verify routines to perform initial checks (just CA validity) and
4714 to obtain the certificate chain. Then additional checks will be
4715 performed on the chain. Currently the root CA is checked to see
4716 if it is explicitly trusted for OCSP signing. This is used to set
4717 a root CA as a global signing root: that is any certificate that
4718 chains to that CA is an acceptable OCSP signing certificate.
4721 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
4722 extensions from a separate configuration file.
4723 As when reading extensions from the main configuration file,
4724 the '-extensions ...' option may be used for specifying the
4726 [Massimiliano Pala <madwolf@comune.modena.it>]
4728 *) New OCSP utility. Allows OCSP requests to be generated or
4729 read. The request can be sent to a responder and the output
4730 parsed, outputed or printed in text form. Not complete yet:
4731 still needs to check the OCSP response validity.
4734 *) New subcommands for 'openssl ca':
4735 'openssl ca -status <serial>' prints the status of the cert with
4736 the given serial number (according to the index file).
4737 'openssl ca -updatedb' updates the expiry status of certificates
4739 [Massimiliano Pala <madwolf@comune.modena.it>]
4741 *) New '-newreq-nodes' command option to CA.pl. This is like
4742 '-newreq', but calls 'openssl req' with the '-nodes' option
4743 so that the resulting key is not encrypted.
4744 [Damien Miller <djm@mindrot.org>]
4746 *) New configuration for the GNU Hurd.
4747 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
4749 *) Initial code to implement OCSP basic response verify. This
4750 is currently incomplete. Currently just finds the signer's
4751 certificate and verifies the signature on the response.
4754 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4755 value of OPENSSLDIR. This is available via the new '-d' option
4756 to 'openssl version', and is also included in 'openssl version -a'.
4759 *) Allowing defining memory allocation callbacks that will be given
4760 file name and line number information in additional arguments
4761 (a const char* and an int). The basic functionality remains, as
4762 well as the original possibility to just replace malloc(),
4763 realloc() and free() by functions that do not know about these
4764 additional arguments. To register and find out the current
4765 settings for extended allocation functions, the following
4766 functions are provided:
4768 CRYPTO_set_mem_ex_functions
4769 CRYPTO_set_locked_mem_ex_functions
4770 CRYPTO_get_mem_ex_functions
4771 CRYPTO_get_locked_mem_ex_functions
4773 These work the same way as CRYPTO_set_mem_functions and friends.
4774 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4775 extended allocation function is enabled.
4776 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4777 a conventional allocation function is enabled.
4778 [Richard Levitte, Bodo Moeller]
4780 *) Finish off removing the remaining LHASH function pointer casts.
4781 There should no longer be any prototype-casting required when using
4782 the LHASH abstraction, and any casts that remain are "bugs". See
4783 the callback types and macros at the head of lhash.h for details
4784 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4787 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4788 If /dev/[u]random devices are not available or do not return enough
4789 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4791 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4792 /etc/entropy will be queried once each in this sequence, quering stops
4793 when enough entropy was collected without querying more sockets.
4796 *) Change the Unix RAND_poll() variant to be able to poll several
4797 random devices, as specified by DEVRANDOM, until a sufficient amount
4798 of data has been collected. We spend at most 10 ms on each file
4799 (select timeout) and read in non-blocking mode. DEVRANDOM now
4800 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4801 (previously it was just the string "/dev/urandom"), so on typical
4802 platforms the 10 ms delay will never occur.
4803 Also separate out the Unix variant to its own file, rand_unix.c.
4804 For VMS, there's a currently-empty rand_vms.c.
4807 *) Move OCSP client related routines to ocsp_cl.c. These
4808 provide utility functions which an application needing
4809 to issue a request to an OCSP responder and analyse the
4810 response will typically need: as opposed to those which an
4811 OCSP responder itself would need which will be added later.
4813 OCSP_request_sign() signs an OCSP request with an API similar
4814 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4815 response. OCSP_response_get1_basic() extracts basic response
4816 from response. OCSP_resp_find_status(): finds and extracts status
4817 information from an OCSP_CERTID structure (which will be created
4818 when the request structure is built). These are built from lower
4819 level functions which work on OCSP_SINGLERESP structures but
4820 wont normally be used unless the application wishes to examine
4821 extensions in the OCSP response for example.
4823 Replace nonce routines with a pair of functions.
4824 OCSP_request_add1_nonce() adds a nonce value and optionally
4825 generates a random value. OCSP_check_nonce() checks the
4826 validity of the nonce in an OCSP response.
4829 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4830 This doesn't copy the supplied OCSP_CERTID and avoids the
4831 need to free up the newly created id. Change return type
4832 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4833 This can then be used to add extensions to the request.
4834 Deleted OCSP_request_new(), since most of its functionality
4835 is now in OCSP_REQUEST_new() (and the case insensitive name
4836 clash) apart from the ability to set the request name which
4837 will be added elsewhere.
4840 *) Update OCSP API. Remove obsolete extensions argument from
4841 various functions. Extensions are now handled using the new
4842 OCSP extension code. New simple OCSP HTTP function which
4843 can be used to send requests and parse the response.
4846 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4847 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4848 uses the special reorder version of SET OF to sort the attributes
4849 and reorder them to match the encoded order. This resolves a long
4850 standing problem: a verify on a PKCS7 structure just after signing
4851 it used to fail because the attribute order did not match the
4852 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4853 it uses the received order. This is necessary to tolerate some broken
4854 software that does not order SET OF. This is handled by encoding
4855 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4856 to produce the required SET OF.
4859 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4860 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4861 files to get correct declarations of the ASN.1 item variables.
4864 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4865 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4866 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4867 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4868 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4869 ASN1_ITEM and no wrapper functions.
4872 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4873 replace the old function pointer based I/O routines. Change most of
4874 the *_d2i_bio() and *_d2i_fp() functions to use these.
4877 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4878 lines, recognice more "algorithms" that can be deselected, and make
4879 it complain about algorithm deselection that isn't recognised.
4882 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4883 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4884 to use new functions. Add NO_ASN1_OLD which can be set to remove
4885 some old style ASN1 functions: this can be used to determine if old
4886 code will still work when these eventually go away.
4889 *) New extension functions for OCSP structures, these follow the
4890 same conventions as certificates and CRLs.
4893 *) New function X509V3_add1_i2d(). This automatically encodes and
4894 adds an extension. Its behaviour can be customised with various
4895 flags to append, replace or delete. Various wrappers added for
4896 certifcates and CRLs.
4899 *) Fix to avoid calling the underlying ASN1 print routine when
4900 an extension cannot be parsed. Correct a typo in the
4901 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4904 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4905 entries for variables.
4908 *) Add functionality to apps/openssl.c for detecting locking
4909 problems: As the program is single-threaded, all we have
4910 to do is register a locking callback using an array for
4911 storing which locks are currently held by the program.
4914 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4915 SSL_get_ex_data_X509_STORE_idx(), which is used in
4916 ssl_verify_cert_chain() and thus can be called at any time
4917 during TLS/SSL handshakes so that thread-safety is essential.
4918 Unfortunately, the ex_data design is not at all suited
4919 for multi-threaded use, so it probably should be abolished.
4922 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4923 [Broadcom, tweaked and integrated by Geoff Thorpe]
4925 *) Move common extension printing code to new function
4926 X509V3_print_extensions(). Reorganise OCSP print routines and
4927 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4930 *) New function X509_signature_print() to remove duplication in some
4934 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4935 set (this was treated exactly the same as SET OF previously). This
4936 is used to reorder the STACK representing the structure to match the
4937 encoding. This will be used to get round a problem where a PKCS7
4938 structure which was signed could not be verified because the STACK
4939 order did not reflect the encoded order.
4942 *) Reimplement the OCSP ASN1 module using the new code.
4945 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4946 for its ASN1 operations. The old style function pointers still exist
4947 for now but they will eventually go away.
4950 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4951 completely replaces the old ASN1 functionality with a table driven
4952 encoder and decoder which interprets an ASN1_ITEM structure describing
4953 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4954 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4955 has also been converted to the new form.
4958 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4959 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4960 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4961 for negative moduli.
4964 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4965 of not touching the result's sign bit.
4968 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4972 *) Changed the LHASH code to use prototypes for callbacks, and created
4973 macros to declare and implement thin (optionally static) functions
4974 that provide type-safety and avoid function pointer casting for the
4975 type-specific callbacks.
4978 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4980 [Veers Staats <staatsvr@asc.hpc.mil>,
4981 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4983 *) Reformat the FAQ so the different questions and answers can be divided
4984 in sections depending on the subject.
4987 *) Have the zlib compression code load ZLIB.DLL dynamically under
4991 *) New function BN_mod_sqrt for computing square roots modulo a prime
4992 (using the probabilistic Tonelli-Shanks algorithm unless
4993 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4994 be handled deterministically).
4995 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4997 *) Make BN_mod_inverse faster by explicitly handling small quotients
4998 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4999 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5002 *) New function BN_kronecker.
5005 *) Fix BN_gcd so that it works on negative inputs; the result is
5006 positive unless both parameters are zero.
5007 Previously something reasonably close to an infinite loop was
5008 possible because numbers could be growing instead of shrinking
5009 in the implementation of Euclid's algorithm.
5012 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5013 sign of the number in question.
5015 Fix BN_is_word(a,w) to work correctly for w == 0.
5017 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5018 because its test if the absolute value of 'a' equals 'w'.
5019 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5020 it exists mostly for use in the implementations of BN_is_zero(),
5021 BN_is_one(), and BN_is_word().
5024 *) New function BN_swap.
5027 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5028 the exponentiation functions are more likely to produce reasonable
5029 results on negative inputs.
5032 *) Change BN_mod_mul so that the result is always non-negative.
5033 Previously, it could be negative if one of the factors was negative;
5034 I don't think anyone really wanted that behaviour.
5037 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5038 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5039 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5040 and add new functions:
5049 BN_mod_lshift1_quick
5053 These functions always generate non-negative results.
5055 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5056 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5058 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5059 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5060 be reduced modulo m.
5061 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5064 The following entry accidentily appeared in the CHANGES file
5065 distributed with OpenSSL 0.9.7. The modifications described in
5066 it do *not* apply to OpenSSL 0.9.7.
5068 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5069 was actually never needed) and in BN_mul(). The removal in BN_mul()
5070 required a small change in bn_mul_part_recursive() and the addition
5071 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5072 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5073 bn_sub_words() and bn_add_words() except they take arrays with
5078 *) In 'openssl passwd', verify passwords read from the terminal
5079 unless the '-salt' option is used (which usually means that
5080 verification would just waste user's time since the resulting
5081 hash is going to be compared with some given password hash)
5082 or the new '-noverify' option is used.
5084 This is an incompatible change, but it does not affect
5085 non-interactive use of 'openssl passwd' (passwords on the command
5086 line, '-stdin' option, '-in ...' option) and thus should not
5090 *) Remove all references to RSAref, since there's no more need for it.
5093 *) Make DSO load along a path given through an environment variable
5094 (SHLIB_PATH) with shl_load().
5097 *) Constify the ENGINE code as a result of BIGNUM constification.
5098 Also constify the RSA code and most things related to it. In a
5099 few places, most notable in the depth of the ASN.1 code, ugly
5100 casts back to non-const were required (to be solved at a later
5104 *) Make it so the openssl application has all engines loaded by default.
5107 *) Constify the BIGNUM routines a little more.
5110 *) Add the following functions:
5112 ENGINE_load_cswift()
5114 ENGINE_load_atalla()
5116 ENGINE_load_builtin_engines()
5118 That way, an application can itself choose if external engines that
5119 are built-in in OpenSSL shall ever be used or not. The benefit is
5120 that applications won't have to be linked with libdl or other dso
5121 libraries unless it's really needed.
5123 Changed 'openssl engine' to load all engines on demand.
5124 Changed the engine header files to avoid the duplication of some
5125 declarations (they differed!).
5128 *) 'openssl engine' can now list capabilities.
5131 *) Better error reporting in 'openssl engine'.
5134 *) Never call load_dh_param(NULL) in s_server.
5137 *) Add engine application. It can currently list engines by name and
5138 identity, and test if they are actually available.
5141 *) Improve RPM specification file by forcing symbolic linking and making
5142 sure the installed documentation is also owned by root.root.
5143 [Damien Miller <djm@mindrot.org>]
5145 *) Give the OpenSSL applications more possibilities to make use of
5146 keys (public as well as private) handled by engines.
5149 *) Add OCSP code that comes from CertCo.
5152 *) Add VMS support for the Rijndael code.
5155 *) Added untested support for Nuron crypto accelerator.
5158 *) Add support for external cryptographic devices. This code was
5159 previously distributed separately as the "engine" branch.
5160 [Geoff Thorpe, Richard Levitte]
5162 *) Rework the filename-translation in the DSO code. It is now possible to
5163 have far greater control over how a "name" is turned into a filename
5164 depending on the operating environment and any oddities about the
5165 different shared library filenames on each system.
5168 *) Support threads on FreeBSD-elf in Configure.
5171 *) Fix for SHA1 assembly problem with MASM: it produces
5172 warnings about corrupt line number information when assembling
5173 with debugging information. This is caused by the overlapping
5175 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5178 NCONF_get_number() has no error checking at all. As a replacement,
5179 NCONF_get_number_e() is defined (_e for "error checking") and is
5180 promoted strongly. The old NCONF_get_number is kept around for
5181 binary backward compatibility.
5182 Make it possible for methods to load from something other than a BIO,
5183 by providing a function pointer that is given a name instead of a BIO.
5184 For example, this could be used to load configuration data from an
5188 *) Fix for non blocking accept BIOs. Added new I/O special reason
5189 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5190 with non blocking I/O was not possible because no retry code was
5191 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5195 *) Added the beginnings of Rijndael support.
5198 *) Fix for bug in DirectoryString mask setting. Add support for
5199 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5200 to allow certificate printing to more controllable, additional
5201 'certopt' option to 'x509' to allow new printing options to be
5205 *) Clean old EAY MD5 hack from e_os.h.
5208 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5210 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5211 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5212 [Joe Orton, Steve Henson]
5214 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5216 *) Fix additional bug revealed by the NISCC test suite:
5218 Stop bug triggering large recursion when presented with
5219 certain ASN.1 tags (CVE-2003-0851)
5222 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5224 *) Fix various bugs revealed by running the NISCC test suite:
5226 Stop out of bounds reads in the ASN1 code when presented with
5227 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5229 If verify callback ignores invalid public key errors don't try to check
5230 certificate signature with the NULL public key.
5234 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5235 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5239 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5240 extra data after the compression methods not only for TLS 1.0
5241 but also for SSL 3.0 (as required by the specification).
5242 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5244 *) Change X509_certificate_type() to mark the key as exported/exportable
5245 when it's 512 *bits* long, not 512 bytes.
5248 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5250 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5251 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5252 a protocol version number mismatch like a decryption error
5253 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5256 *) Turn on RSA blinding by default in the default implementation
5257 to avoid a timing attack. Applications that don't want it can call
5258 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5259 They would be ill-advised to do so in most cases.
5260 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5262 *) Change RSA blinding code so that it works when the PRNG is not
5263 seeded (in this case, the secret RSA exponent is abused as
5264 an unpredictable seed -- if it is not unpredictable, there
5265 is no point in blinding anyway). Make RSA blinding thread-safe
5266 by remembering the creator's thread ID in rsa->blinding and
5267 having all other threads use local one-time blinding factors
5268 (this requires more computation than sharing rsa->blinding, but
5269 avoids excessive locking; and if an RSA object is not shared
5270 between threads, blinding will still be very fast).
5273 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5275 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5276 via timing by performing a MAC computation even if incorrrect
5277 block cipher padding has been found. This is a countermeasure
5278 against active attacks where the attacker has to distinguish
5279 between bad padding and a MAC verification error. (CVE-2003-0078)
5281 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5282 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5283 Martin Vuagnoux (EPFL, Ilion)]
5285 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5287 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5288 memory from it's contents. This is done with a counter that will
5289 place alternating values in each byte. This can be used to solve
5290 two issues: 1) the removal of calls to memset() by highly optimizing
5291 compilers, and 2) cleansing with other values than 0, since those can
5292 be read through on certain media, for example a swap space on disk.
5295 *) Bugfix: client side session caching did not work with external caching,
5296 because the session->cipher setting was not restored when reloading
5297 from the external cache. This problem was masked, when
5298 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5299 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5302 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5303 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5304 [Zeev Lieber <zeev-l@yahoo.com>]
5306 *) Undo an undocumented change introduced in 0.9.6e which caused
5307 repeated calls to OpenSSL_add_all_ciphers() and
5308 OpenSSL_add_all_digests() to be ignored, even after calling
5312 *) Change the default configuration reader to deal with last line not
5313 being properly terminated.
5316 *) Change X509_NAME_cmp() so it applies the special rules on handling
5317 DN values that are of type PrintableString, as well as RDNs of type
5318 emailAddress where the value has the type ia5String.
5319 [stefank@valicert.com via Richard Levitte]
5321 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5322 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5323 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5324 the bitwise-OR of the two for use by the majority of applications
5325 wanting this behaviour, and update the docs. The documented
5326 behaviour and actual behaviour were inconsistent and had been
5327 changing anyway, so this is more a bug-fix than a behavioural
5329 [Geoff Thorpe, diagnosed by Nadav Har'El]
5331 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5332 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5335 *) Fix initialization code race conditions in
5336 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5337 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5338 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5339 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5340 ssl2_get_cipher_by_char(),
5341 ssl3_get_cipher_by_char().
5342 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5344 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5345 the cached sessions are flushed, as the remove_cb() might use ex_data
5346 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5347 (see [openssl.org #212]).
5348 [Geoff Thorpe, Lutz Jaenicke]
5350 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5351 length, instead of the encoding length to d2i_ASN1_OBJECT.
5354 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5356 *) [In 0.9.6g-engine release:]
5357 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5358 [Lynn Gazis <lgazis@rainbow.com>]
5360 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5362 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5363 and get fix the header length calculation.
5364 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5365 Alon Kantor <alonk@checkpoint.com> (and others),
5368 *) Use proper error handling instead of 'assertions' in buffer
5369 overflow checks added in 0.9.6e. This prevents DoS (the
5370 assertions could call abort()).
5371 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5373 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5375 *) Add various sanity checks to asn1_get_length() to reject
5376 the ASN1 length bytes if they exceed sizeof(long), will appear
5377 negative or the content length exceeds the length of the
5379 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5381 *) Fix cipher selection routines: ciphers without encryption had no flags
5382 for the cipher strength set and where therefore not handled correctly
5383 by the selection routines (PR #130).
5386 *) Fix EVP_dsa_sha macro.
5390 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5391 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5392 that was added in OpenSSL 0.9.6d.
5394 As the countermeasure turned out to be incompatible with some
5395 broken SSL implementations, the new option is part of SSL_OP_ALL.
5396 SSL_OP_ALL is usually employed when compatibility with weird SSL
5397 implementations is desired (e.g. '-bugs' option to 's_client' and
5398 's_server'), so the new option is automatically set in many
5402 *) Changes in security patch:
5404 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5405 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5406 Air Force Materiel Command, USAF, under agreement number
5409 *) Add various sanity checks to asn1_get_length() to reject
5410 the ASN1 length bytes if they exceed sizeof(long), will appear
5411 negative or the content length exceeds the length of the
5412 supplied buffer. (CVE-2002-0659)
5413 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5415 *) Assertions for various potential buffer overflows, not known to
5417 [Ben Laurie (CHATS)]
5419 *) Various temporary buffers to hold ASCII versions of integers were
5420 too small for 64 bit platforms. (CVE-2002-0655)
5421 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5423 *) Remote buffer overflow in SSL3 protocol - an attacker could
5424 supply an oversized session ID to a client. (CVE-2002-0656)
5425 [Ben Laurie (CHATS)]
5427 *) Remote buffer overflow in SSL2 protocol - an attacker could
5428 supply an oversized client master key. (CVE-2002-0656)
5429 [Ben Laurie (CHATS)]
5431 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5433 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5434 encoded as NULL) with id-dsa-with-sha1.
5435 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5437 *) Check various X509_...() return values in apps/req.c.
5438 [Nils Larsch <nla@trustcenter.de>]
5440 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5441 an end-of-file condition would erronously be flagged, when the CRLF
5442 was just at the end of a processed block. The bug was discovered when
5443 processing data through a buffering memory BIO handing the data to a
5444 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5445 <ptsekov@syntrex.com> and Nedelcho Stanev.
5448 *) Implement a countermeasure against a vulnerability recently found
5449 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5450 before application data chunks to avoid the use of known IVs
5451 with data potentially chosen by the attacker.
5454 *) Fix length checks in ssl3_get_client_hello().
5457 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5458 to prevent ssl3_read_internal() from incorrectly assuming that
5459 ssl3_read_bytes() found application data while handshake
5460 processing was enabled when in fact s->s3->in_read_app_data was
5461 merely automatically cleared during the initial handshake.
5462 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5464 *) Fix object definitions for Private and Enterprise: they were not
5465 recognized in their shortname (=lowercase) representation. Extend
5466 obj_dat.pl to issue an error when using undefined keywords instead
5467 of silently ignoring the problem (Svenning Sorensen
5468 <sss@sss.dnsalias.net>).
5471 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5472 generators, i.e. generators other than 2 and 5. (Previously, the
5473 code did not properly initialise the 'add' and 'rem' values to
5474 BN_generate_prime().)
5476 In the new general case, we do not insist that 'generator' is
5477 actually a primitive root: This requirement is rather pointless;
5478 a generator of the order-q subgroup is just as good, if not
5482 *) Map new X509 verification errors to alerts. Discovered and submitted by
5483 Tom Wu <tom@arcot.com>.
5486 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
5487 returning non-zero before the data has been completely received
5488 when using non-blocking I/O.
5489 [Bodo Moeller; problem pointed out by John Hughes]
5491 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
5492 [Ben Laurie, Lutz Jaenicke]
5494 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
5495 Yoram Zahavi <YoramZ@gilian.com>).
5498 *) Add information about CygWin 1.3 and on, and preserve proper
5499 configuration for the versions before that.
5500 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5502 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
5503 check whether we deal with a copy of a session and do not delete from
5504 the cache in this case. Problem reported by "Izhar Shoshani Levi"
5505 <izhar@checkpoint.com>.
5508 *) Do not store session data into the internal session cache, if it
5509 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
5510 flag is set). Proposed by Aslam <aslam@funk.com>.
5513 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
5517 *) [In 0.9.6d-engine release:]
5518 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5519 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5521 *) Add the configuration target linux-s390x.
5522 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
5524 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
5525 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
5526 variable as an indication that a ClientHello message has been
5527 received. As the flag value will be lost between multiple
5528 invocations of ssl3_accept when using non-blocking I/O, the
5529 function may not be aware that a handshake has actually taken
5530 place, thus preventing a new session from being added to the
5533 To avoid this problem, we now set s->new_session to 2 instead of
5534 using a local variable.
5535 [Lutz Jaenicke, Bodo Moeller]
5537 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
5538 if the SSL_R_LENGTH_MISMATCH error is detected.
5539 [Geoff Thorpe, Bodo Moeller]
5541 *) New 'shared_ldflag' column in Configure platform table.
5544 *) Fix EVP_CIPHER_mode macro.
5545 ["Dan S. Camper" <dan@bti.net>]
5547 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
5548 type, we must throw them away by setting rr->length to 0.
5549 [D P Chang <dpc@qualys.com>]
5551 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
5553 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
5554 <Dominikus.Scherkl@biodata.com>. (The previous implementation
5555 worked incorrectly for those cases where range = 10..._2 and
5556 3*range is two bits longer than range.)
5559 *) Only add signing time to PKCS7 structures if it is not already
5563 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
5564 OBJ_ld_ce should be OBJ_id_ce.
5565 Also some ip-pda OIDs in crypto/objects/objects.txt were
5566 incorrect (cf. RFC 3039).
5567 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
5569 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
5570 returns early because it has nothing to do.
5571 [Andy Schneider <andy.schneider@bjss.co.uk>]
5573 *) [In 0.9.6c-engine release:]
5574 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
5575 [Andy Schneider <andy.schneider@bjss.co.uk>]
5577 *) [In 0.9.6c-engine release:]
5578 Add support for Cryptographic Appliance's keyserver technology.
5579 (Use engine 'keyclient')
5580 [Cryptographic Appliances and Geoff Thorpe]
5582 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
5583 is called via tools/c89.sh because arguments have to be
5584 rearranged (all '-L' options must appear before the first object
5586 [Richard Shapiro <rshapiro@abinitio.com>]
5588 *) [In 0.9.6c-engine release:]
5589 Add support for Broadcom crypto accelerator cards, backported
5591 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
5593 *) [In 0.9.6c-engine release:]
5594 Add support for SureWare crypto accelerator cards from
5595 Baltimore Technologies. (Use engine 'sureware')
5596 [Baltimore Technologies and Mark Cox]
5598 *) [In 0.9.6c-engine release:]
5599 Add support for crypto accelerator cards from Accelerated
5600 Encryption Processing, www.aep.ie. (Use engine 'aep')
5601 [AEP Inc. and Mark Cox]
5603 *) Add a configuration entry for gcc on UnixWare.
5604 [Gary Benson <gbenson@redhat.com>]
5606 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
5607 messages are stored in a single piece (fixed-length part and
5608 variable-length part combined) and fix various bugs found on the way.
5611 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
5612 instead. BIO_gethostbyname() does not know what timeouts are
5613 appropriate, so entries would stay in cache even when they have
5615 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
5617 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
5618 faced with a pathologically small ClientHello fragment that does
5619 not contain client_version: Instead of aborting with an error,
5620 simply choose the highest available protocol version (i.e.,
5621 TLS 1.0 unless it is disabled). In practice, ClientHello
5622 messages are never sent like this, but this change gives us
5623 strictly correct behaviour at least for TLS.
5626 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
5627 never resets s->method to s->ctx->method when called from within
5628 one of the SSL handshake functions.
5629 [Bodo Moeller; problem pointed out by Niko Baric]
5631 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
5632 (sent using the client's version number) if client_version is
5633 smaller than the protocol version in use. Also change
5634 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
5635 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
5636 the client will at least see that alert.
5639 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
5643 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
5644 client receives HelloRequest while in a handshake.
5645 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
5647 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
5648 should end in 'break', not 'goto end' which circuments various
5649 cleanups done in state SSL_ST_OK. But session related stuff
5650 must be disabled for SSL_ST_OK in the case that we just sent a
5653 Also avoid some overhead by not calling ssl_init_wbio_buffer()
5654 before just sending a HelloRequest.
5655 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
5657 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
5658 reveal whether illegal block cipher padding was found or a MAC
5659 verification error occured. (Neither SSLerr() codes nor alerts
5660 are directly visible to potential attackers, but the information
5661 may leak via logfiles.)
5663 Similar changes are not required for the SSL 2.0 implementation
5664 because the number of padding bytes is sent in clear for SSL 2.0,
5665 and the extra bytes are just ignored. However ssl/s2_pkt.c
5666 failed to verify that the purported number of padding bytes is in
5670 *) Add OpenUNIX-8 support including shared libraries
5671 (Boyd Lynn Gerber <gerberb@zenez.com>).
5674 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
5675 'wristwatch attack' using huge encoding parameters (cf.
5676 James H. Manger's CRYPTO 2001 paper). Note that the
5677 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
5678 encoding parameters and hence was not vulnerable.
5681 *) BN_sqr() bug fix.
5682 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
5684 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
5685 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
5686 followed by modular reduction.
5687 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
5689 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
5690 equivalent based on BN_pseudo_rand() instead of BN_rand().
5693 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
5694 This function was broken, as the check for a new client hello message
5695 to handle SGC did not allow these large messages.
5696 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
5699 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
5702 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
5703 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
5706 *) Rework the configuration and shared library support for Tru64 Unix.
5707 The configuration part makes use of modern compiler features and
5708 still retains old compiler behavior for those that run older versions
5709 of the OS. The shared library support part includes a variant that
5710 uses the RPATH feature, and is available through the special
5711 configuration target "alpha-cc-rpath", which will never be selected
5713 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
5715 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
5716 with the same message size as in ssl3_get_certificate_request().
5717 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
5718 messages might inadvertently be reject as too long.
5719 [Petr Lampa <lampa@fee.vutbr.cz>]
5721 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
5724 *) Modified SSL library such that the verify_callback that has been set
5725 specificly for an SSL object with SSL_set_verify() is actually being
5726 used. Before the change, a verify_callback set with this function was
5727 ignored and the verify_callback() set in the SSL_CTX at the time of
5728 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
5729 to allow the necessary settings.
5732 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
5733 explicitly to NULL, as at least on Solaris 8 this seems not always to be
5734 done automatically (in contradiction to the requirements of the C
5735 standard). This made problems when used from OpenSSH.
5738 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
5739 dh->length and always used
5741 BN_rand_range(priv_key, dh->p).
5743 BN_rand_range() is not necessary for Diffie-Hellman, and this
5744 specific range makes Diffie-Hellman unnecessarily inefficient if
5745 dh->length (recommended exponent length) is much smaller than the
5746 length of dh->p. We could use BN_rand_range() if the order of
5747 the subgroup was stored in the DH structure, but we only have
5752 BN_rand(priv_key, l, ...)
5754 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5760 RSA_eay_public_encrypt
5761 RSA_eay_private_decrypt
5762 RSA_eay_private_encrypt (signing)
5763 RSA_eay_public_decrypt (signature verification)
5765 (default implementations for RSA_public_encrypt,
5766 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5767 always reject numbers >= n.
5770 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5771 to synchronize access to 'locking_thread'. This is necessary on
5772 systems where access to 'locking_thread' (an 'unsigned long'
5773 variable) is not atomic.
5776 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5777 *before* setting the 'crypto_lock_rand' flag. The previous code had
5778 a race condition if 0 is a valid thread ID.
5779 [Travis Vitek <vitek@roguewave.com>]
5781 *) Add support for shared libraries under Irix.
5782 [Albert Chin-A-Young <china@thewrittenword.com>]
5784 *) Add configuration option to build on Linux on both big-endian and
5786 [Ralf Baechle <ralf@uni-koblenz.de>]
5788 *) Add the possibility to create shared libraries on HP-UX.
5791 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5793 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5794 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5795 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5796 PRNG state recovery was possible based on the output of
5797 one PRNG request appropriately sized to gain knowledge on
5798 'md' followed by enough consecutive 1-byte PRNG requests
5799 to traverse all of 'state'.
5801 1. When updating 'md_local' (the current thread's copy of 'md')
5802 during PRNG output generation, hash all of the previous
5803 'md_local' value, not just the half used for PRNG output.
5805 2. Make the number of bytes from 'state' included into the hash
5806 independent from the number of PRNG bytes requested.
5808 The first measure alone would be sufficient to avoid
5809 Markku-Juhani's attack. (Actually it had never occurred
5810 to me that the half of 'md_local' used for chaining was the
5811 half from which PRNG output bytes were taken -- I had always
5812 assumed that the secret half would be used.) The second
5813 measure makes sure that additional data from 'state' is never
5814 mixed into 'md_local' in small portions; this heuristically
5815 further strengthens the PRNG.
5818 *) Fix crypto/bn/asm/mips3.s.
5821 *) When only the key is given to "enc", the IV is undefined. Print out
5822 an error message in this case.
5825 *) Handle special case when X509_NAME is empty in X509 printing routines.
5828 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5829 positive and less than q.
5832 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5833 used: it isn't thread safe and the add_lock_callback should handle
5835 [Paul Rose <Paul.Rose@bridge.com>]
5837 *) Verify that incoming data obeys the block size in
5838 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5842 [Ulf Möller, Bodo Möller]
5844 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5845 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5846 when fixing the server behaviour for backwards-compatible 'client
5847 hello' messages. (Note that the attack is impractical against
5848 SSL 3.0 and TLS 1.0 anyway because length and version checking
5849 means that the probability of guessing a valid ciphertext is
5850 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5853 Before 0.9.5, the countermeasure (hide the error by generating a
5854 random 'decryption result') did not work properly because
5855 ERR_clear_error() was missing, meaning that SSL_get_error() would
5856 detect the supposedly ignored error.
5858 Both problems are now fixed.
5861 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5862 (previously it was 1024).
5865 *) Fix for compatibility mode trust settings: ignore trust settings
5866 unless some valid trust or reject settings are present.
5869 *) Fix for blowfish EVP: its a variable length cipher.
5872 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5873 parameters in DSA public key structures and return an error in the
5874 DSA routines if parameters are absent.
5877 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5878 in the current directory if neither $RANDFILE nor $HOME was set.
5879 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5880 caused some confusion to Windows users who haven't defined $HOME.
5881 Thus RAND_file_name() is changed again: e_os.h can define a
5882 DEFAULT_HOME, which will be used if $HOME is not set.
5883 For Windows, we use "C:"; on other platforms, we still require
5884 environment variables.
5886 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5887 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5888 having multiple threads call RAND_poll() concurrently.
5891 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5892 combination of a flag and a thread ID variable.
5893 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5894 flag), *other* threads can enter ssleay_add_bytes without obeying
5895 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5896 that they do not hold after the first thread unsets add_do_not_lock).
5899 *) Change bctest again: '-x' expressions are not available in all
5903 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5905 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5906 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5908 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5909 the default extension for executables, if any. Also, make the perl
5910 scripts that use symlink() to test if it really exists and use "cp"
5911 if it doesn't. All this made OpenSSL compilable and installable in
5915 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5916 If SEQUENCE is length is indefinite just set c->slen to the total
5917 amount of data available.
5918 [Steve Henson, reported by shige@FreeBSD.org]
5919 [This change does not apply to 0.9.7.]
5921 *) Change bctest to avoid here-documents inside command substitution
5922 (workaround for FreeBSD /bin/sh bug).
5923 For compatibility with Ultrix, avoid shell functions (introduced
5924 in the bctest version that searches along $PATH).
5927 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5928 with des_encrypt() defined on some operating systems, like Solaris
5932 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5933 On the Importance of Eliminating Errors in Cryptographic
5934 Computations, J. Cryptology 14 (2001) 2, 101-119,
5935 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5938 *) MIPS assembler BIGNUM division bug fix.
5941 *) Disabled incorrect Alpha assembler code.
5944 *) Fix PKCS#7 decode routines so they correctly update the length
5945 after reading an EOC for the EXPLICIT tag.
5947 [This change does not apply to 0.9.7.]
5949 *) Fix bug in PKCS#12 key generation routines. This was triggered
5950 if a 3DES key was generated with a 0 initial byte. Include
5951 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5952 (but broken) behaviour.
5955 *) Enhance bctest to search for a working bc along $PATH and print
5957 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5959 *) Fix memory leaks in err.c: free err_data string if necessary;
5960 don't write to the wrong index in ERR_set_error_data.
5963 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5967 *) Replace rdtsc with _emit statements for VC++ version 5.
5968 [Jeremy Cooper <jeremy@baymoo.org>]
5970 *) Make it possible to reuse SSLv2 sessions.
5973 *) In copy_email() check for >= 0 as a return value for
5974 X509_NAME_get_index_by_NID() since 0 is a valid index.
5975 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5977 *) Avoid coredump with unsupported or invalid public keys by checking if
5978 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5979 PKCS7_verify() fails with non detached data.
5982 *) Don't use getenv in library functions when run as setuid/setgid.
5983 New function OPENSSL_issetugid().
5986 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5987 due to incorrect handling of multi-threading:
5989 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5991 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5993 3. Count how many times MemCheck_off() has been called so that
5994 nested use can be treated correctly. This also avoids
5995 inband-signalling in the previous code (which relied on the
5996 assumption that thread ID 0 is impossible).
5999 *) Add "-rand" option also to s_client and s_server.
6002 *) Fix CPU detection on Irix 6.x.
6003 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6004 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6006 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6009 [This change does not apply to 0.9.7.]
6011 *) Use the cached encoding of an X509_NAME structure rather than
6012 copying it. This is apparently the reason for the libsafe "errors"
6013 but the code is actually correct.
6016 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6017 Bleichenbacher's DSA attack.
6018 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6019 to be set and top=0 forces the highest bit to be set; top=-1 is new
6020 and leaves the highest bit random.
6021 [Ulf Moeller, Bodo Moeller]
6023 *) In the NCONF_...-based implementations for CONF_... queries
6024 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6025 a temporary CONF structure with the data component set to NULL
6026 (which gives segmentation faults in lh_retrieve).
6027 Instead, use NULL for the CONF pointer in CONF_get_string and
6028 CONF_get_number (which may use environment variables) and directly
6029 return NULL from CONF_get_section.
6032 *) Fix potential buffer overrun for EBCDIC.
6035 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6036 keyUsage if basicConstraints absent for a CA.
6039 *) Make SMIME_write_PKCS7() write mail header values with a format that
6040 is more generally accepted (no spaces before the semicolon), since
6041 some programs can't parse those values properly otherwise. Also make
6042 sure BIO's that break lines after each write do not create invalid
6046 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6047 macros previously used would not encode an empty SEQUENCE OF
6048 and break the signature.
6050 [This change does not apply to 0.9.7.]
6052 *) Zero the premaster secret after deriving the master secret in
6056 *) Add some EVP_add_digest_alias registrations (as found in
6057 OpenSSL_add_all_digests()) to SSL_library_init()
6058 aka OpenSSL_add_ssl_algorithms(). This provides improved
6059 compatibility with peers using X.509 certificates
6060 with unconventional AlgorithmIdentifier OIDs.
6063 *) Fix for Irix with NO_ASM.
6064 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6066 *) ./config script fixes.
6067 [Ulf Moeller, Richard Levitte]
6069 *) Fix 'openssl passwd -1'.
6072 *) Change PKCS12_key_gen_asc() so it can cope with non null
6073 terminated strings whose length is passed in the passlen
6074 parameter, for example from PEM callbacks. This was done
6075 by adding an extra length parameter to asc2uni().
6076 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6078 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6079 call failed, free the DSA structure.
6082 *) Fix to uni2asc() to cope with zero length Unicode strings.
6083 These are present in some PKCS#12 files.
6086 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6087 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6088 when writing a 32767 byte record.
6089 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6091 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6092 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6094 (RSA objects have a reference count access to which is protected
6095 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6096 so they are meant to be shared between threads.)
6097 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6098 "Reddie, Steven" <Steven.Reddie@ca.com>]
6100 *) Fix a deadlock in CRYPTO_mem_leaks().
6103 *) Use better test patterns in bntest.
6106 *) rand_win.c fix for Borland C.
6109 *) BN_rshift bugfix for n == 0.
6112 *) Add a 'bctest' script that checks for some known 'bc' bugs
6113 so that 'make test' does not abort just because 'bc' is broken.
6116 *) Store verify_result within SSL_SESSION also for client side to
6117 avoid potential security hole. (Re-used sessions on the client side
6118 always resulted in verify_result==X509_V_OK, not using the original
6119 result of the server certificate verification.)
6122 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6123 SSL3_RT_APPLICATION_DATA, return 0.
6124 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6128 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6129 releases, have been re-implemented by renaming the previous
6130 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6131 and ssl3_read_internal, respectively, and adding 'peek' parameters
6132 to them. The new ssl[23]_{read,peek} functions are calls to
6133 ssl[23]_read_internal with the 'peek' flag set appropriately.
6134 A 'peek' parameter has also been added to ssl3_read_bytes, which
6135 does the actual work for ssl3_read_internal.
6138 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6139 the method-specific "init()" handler. Also clean up ex_data after
6140 calling the method-specific "finish()" handler. Previously, this was
6141 happening the other way round.
6144 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6145 The previous value, 12, was not always sufficient for BN_mod_exp().
6148 *) Make sure that shared libraries get the internal name engine with
6149 the full version number and not just 0. This should mark the
6150 shared libraries as not backward compatible. Of course, this should
6151 be changed again when we can guarantee backward binary compatibility.
6154 *) Fix typo in get_cert_by_subject() in by_dir.c
6155 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6157 *) Rework the system to generate shared libraries:
6159 - Make note of the expected extension for the shared libraries and
6160 if there is a need for symbolic links from for example libcrypto.so.0
6161 to libcrypto.so.0.9.7. There is extended info in Configure for
6164 - Make as few rebuilds of the shared libraries as possible.
6166 - Still avoid linking the OpenSSL programs with the shared libraries.
6168 - When installing, install the shared libraries separately from the
6172 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6174 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6175 and not in SSL_clear because the latter is also used by the
6176 accept/connect functions; previously, the settings made by
6177 SSL_set_read_ahead would be lost during the handshake.
6178 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6180 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6181 Previously, it would create entries for disableed algorithms no
6185 *) Added several new manual pages for SSL_* function.
6188 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6190 *) In ssl23_get_client_hello, generate an error message when faced
6191 with an initial SSL 3.0/TLS record that is too small to contain the
6192 first two bytes of the ClientHello message, i.e. client_version.
6193 (Note that this is a pathologic case that probably has never happened
6194 in real life.) The previous approach was to use the version number
6195 from the record header as a substitute; but our protocol choice
6196 should not depend on that one because it is not authenticated
6197 by the Finished messages.
6200 *) More robust randomness gathering functions for Windows.
6201 [Jeffrey Altman <jaltman@columbia.edu>]
6203 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6204 not set then we don't setup the error code for issuer check errors
6205 to avoid possibly overwriting other errors which the callback does
6206 handle. If an application does set the flag then we assume it knows
6207 what it is doing and can handle the new informational codes
6211 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6212 a general "ANY" type, as such it should be able to decode anything
6213 including tagged types. However it didn't check the class so it would
6214 wrongly interpret tagged types in the same way as their universal
6215 counterpart and unknown types were just rejected. Changed so that the
6216 tagged and unknown types are handled in the same way as a SEQUENCE:
6217 that is the encoding is stored intact. There is also a new type
6218 "V_ASN1_OTHER" which is used when the class is not universal, in this
6219 case we have no idea what the actual type is so we just lump them all
6223 *) On VMS, stdout may very well lead to a file that is written to
6224 in a record-oriented fashion. That means that every write() will
6225 write a separate record, which will be read separately by the
6226 programs trying to read from it. This can be very confusing.
6228 The solution is to put a BIO filter in the way that will buffer
6229 text until a linefeed is reached, and then write everything a
6230 line at a time, so every record written will be an actual line,
6231 not chunks of lines and not (usually doesn't happen, but I've
6232 seen it once) several lines in one record. BIO_f_linebuffer() is
6235 Currently, it's a VMS-only method, because that's where it has
6236 been tested well enough.
6239 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6240 it can return incorrect results.
6241 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6242 but it was in 0.9.6-beta[12].)
6245 *) Disable the check for content being present when verifying detached
6246 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6247 include zero length content when signing messages.
6250 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6251 BIO_ctrl (for BIO pairs).
6254 *) Add DSO method for VMS.
6257 *) Bug fix: Montgomery multiplication could produce results with the
6261 *) Add RPM specification openssl.spec and modify it to build three
6262 packages. The default package contains applications, application
6263 documentation and run-time libraries. The devel package contains
6264 include files, static libraries and function documentation. The
6265 doc package contains the contents of the doc directory. The original
6266 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6269 *) Add a large number of documentation files for many SSL routines.
6270 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6272 *) Add a configuration entry for Sony News 4.
6273 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6275 *) Don't set the two most significant bits to one when generating a
6276 random number < q in the DSA library.
6279 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6280 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6281 the underlying transport is blocking) if a handshake took place.
6282 (The default behaviour is needed by applications such as s_client
6283 and s_server that use select() to determine when to use SSL_read;
6284 but for applications that know in advance when to expect data, it
6285 just makes things more complicated.)
6288 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6292 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6293 work better on such systems.
6294 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6296 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6297 Update PKCS12_parse() so it copies the friendlyName and the
6298 keyid to the certificates aux info.
6301 *) Fix bug in PKCS7_verify() which caused an infinite loop
6302 if there was more than one signature.
6303 [Sven Uszpelkat <su@celocom.de>]
6305 *) Major change in util/mkdef.pl to include extra information
6306 about each symbol, as well as presentig variables as well
6307 as functions. This change means that there's n more need
6308 to rebuild the .num files when some algorithms are excluded.
6311 *) Allow the verify time to be set by an application,
6312 rather than always using the current time.
6315 *) Phase 2 verify code reorganisation. The certificate
6316 verify code now looks up an issuer certificate by a
6317 number of criteria: subject name, authority key id
6318 and key usage. It also verifies self signed certificates
6319 by the same criteria. The main comparison function is
6320 X509_check_issued() which performs these checks.
6322 Lot of changes were necessary in order to support this
6323 without completely rewriting the lookup code.
6325 Authority and subject key identifier are now cached.
6327 The LHASH 'certs' is X509_STORE has now been replaced
6328 by a STACK_OF(X509_OBJECT). This is mainly because an
6329 LHASH can't store or retrieve multiple objects with
6330 the same hash value.
6332 As a result various functions (which were all internal
6333 use only) have changed to handle the new X509_STORE
6334 structure. This will break anything that messed round
6335 with X509_STORE internally.
6337 The functions X509_STORE_add_cert() now checks for an
6338 exact match, rather than just subject name.
6340 The X509_STORE API doesn't directly support the retrieval
6341 of multiple certificates matching a given criteria, however
6342 this can be worked round by performing a lookup first
6343 (which will fill the cache with candidate certificates)
6344 and then examining the cache for matches. This is probably
6345 the best we can do without throwing out X509_LOOKUP
6346 entirely (maybe later...).
6348 The X509_VERIFY_CTX structure has been enhanced considerably.
6350 All certificate lookup operations now go via a get_issuer()
6351 callback. Although this currently uses an X509_STORE it
6352 can be replaced by custom lookups. This is a simple way
6353 to bypass the X509_STORE hackery necessary to make this
6354 work and makes it possible to use more efficient techniques
6355 in future. A very simple version which uses a simple
6356 STACK for its trusted certificate store is also provided
6357 using X509_STORE_CTX_trusted_stack().
6359 The verify_cb() and verify() callbacks now have equivalents
6360 in the X509_STORE_CTX structure.
6362 X509_STORE_CTX also has a 'flags' field which can be used
6363 to customise the verify behaviour.
6366 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6367 excludes S/MIME capabilities.
6370 *) When a certificate request is read in keep a copy of the
6371 original encoding of the signed data and use it when outputing
6372 again. Signatures then use the original encoding rather than
6373 a decoded, encoded version which may cause problems if the
6374 request is improperly encoded.
6377 *) For consistency with other BIO_puts implementations, call
6378 buffer_write(b, ...) directly in buffer_puts instead of calling
6381 In BIO_puts, increment b->num_write as in BIO_write.
6382 [Peter.Sylvester@EdelWeb.fr]
6384 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6385 BN_zero, we may not return a BIGNUM with an array consisting of
6389 *) Avoid calling abort() from within the library when problems are
6390 detected, except if preprocessor symbols have been defined
6391 (such as REF_CHECK, BN_DEBUG etc.).
6394 *) New openssl application 'rsautl'. This utility can be
6395 used for low level RSA operations. DER public key
6396 BIO/fp routines also added.
6399 *) New Configure entry and patches for compiling on QNX 4.
6400 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6402 *) A demo state-machine implementation was sponsored by
6403 Nuron (http://www.nuron.com/) and is now available in
6404 demos/state_machine.
6407 *) New options added to the 'dgst' utility for signature
6408 generation and verification.
6411 *) Unrecognized PKCS#7 content types are now handled via a
6412 catch all ASN1_TYPE structure. This allows unsupported
6413 types to be stored as a "blob" and an application can
6414 encode and decode it manually.
6417 *) Fix various signed/unsigned issues to make a_strex.c
6419 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6421 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6422 length if passed a buffer. ASN1_INTEGER_to_BN failed
6423 if passed a NULL BN and its argument was negative.
6424 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6426 *) Modification to PKCS#7 encoding routines to output definite
6427 length encoding. Since currently the whole structures are in
6428 memory there's not real point in using indefinite length
6429 constructed encoding. However if OpenSSL is compiled with
6430 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6433 *) Added BIO_vprintf() and BIO_vsnprintf().
6436 *) Added more prefixes to parse for in the the strings written
6437 through a logging bio, to cover all the levels that are available
6438 through syslog. The prefixes are now:
6440 PANIC, EMERG, EMR => LOG_EMERG
6441 ALERT, ALR => LOG_ALERT
6442 CRIT, CRI => LOG_CRIT
6443 ERROR, ERR => LOG_ERR
6444 WARNING, WARN, WAR => LOG_WARNING
6445 NOTICE, NOTE, NOT => LOG_NOTICE
6446 INFO, INF => LOG_INFO
6447 DEBUG, DBG => LOG_DEBUG
6449 and as before, if none of those prefixes are present at the
6450 beginning of the string, LOG_ERR is chosen.
6452 On Win32, the LOG_* levels are mapped according to this:
6454 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6455 LOG_WARNING => EVENTLOG_WARNING_TYPE
6456 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6460 *) Made it possible to reconfigure with just the configuration
6461 argument "reconf" or "reconfigure". The command line arguments
6462 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6463 and are retrieved from there when reconfiguring.
6467 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6469 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6472 *) The obj_dat.pl script was messing up the sorting of object
6473 names. The reason was that it compared the quoted version
6474 of strings as a result "OCSP" > "OCSP Signing" because
6475 " > SPACE. Changed script to store unquoted versions of
6476 names and add quotes on output. It was also omitting some
6477 names from the lookup table if they were given a default
6478 value (that is if SN is missing it is given the same
6479 value as LN and vice versa), these are now added on the
6480 grounds that if an object has a name we should be able to
6481 look it up. Finally added warning output when duplicate
6482 short or long names are found.
6485 *) Changes needed for Tandem NSK.
6486 [Scott Uroff <scott@xypro.com>]
6488 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
6489 RSA_padding_check_SSLv23(), special padding was never detected
6490 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
6491 version rollback attacks was not effective.
6493 In s23_clnt.c, don't use special rollback-attack detection padding
6494 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
6495 client; similarly, in s23_srvr.c, don't do the rollback check if
6496 SSL 2.0 is the only protocol enabled in the server.
6499 *) Make it possible to get hexdumps of unprintable data with 'openssl
6500 asn1parse'. By implication, the functions ASN1_parse_dump() and
6501 BIO_dump_indent() are added.
6504 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
6505 these print out strings and name structures based on various
6506 flags including RFC2253 support and proper handling of
6507 multibyte characters. Added options to the 'x509' utility
6508 to allow the various flags to be set.
6511 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
6512 Also change the functions X509_cmp_current_time() and
6513 X509_gmtime_adj() work with an ASN1_TIME structure,
6514 this will enable certificates using GeneralizedTime in validity
6515 dates to be checked.
6518 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
6519 negative public key encodings) on by default,
6520 NO_NEG_PUBKEY_BUG can be set to disable it.
6523 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
6524 content octets. An i2c_ASN1_OBJECT is unnecessary because
6525 the encoding can be trivially obtained from the structure.
6528 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
6529 not read locks (CRYPTO_r_[un]lock).
6532 *) A first attempt at creating official support for shared
6533 libraries through configuration. I've kept it so the
6534 default is static libraries only, and the OpenSSL programs
6535 are always statically linked for now, but there are
6536 preparations for dynamic linking in place.
6537 This has been tested on Linux and Tru64.
6540 *) Randomness polling function for Win9x, as described in:
6541 Peter Gutmann, Software Generation of Practically Strong
6545 *) Fix so PRNG is seeded in req if using an already existing
6549 *) New options to smime application. -inform and -outform
6550 allow alternative formats for the S/MIME message including
6551 PEM and DER. The -content option allows the content to be
6552 specified separately. This should allow things like Netscape
6553 form signing output easier to verify.
6556 *) Fix the ASN1 encoding of tags using the 'long form'.
6559 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
6560 STRING types. These convert content octets to and from the
6561 underlying type. The actual tag and length octets are
6562 already assumed to have been read in and checked. These
6563 are needed because all other string types have virtually
6564 identical handling apart from the tag. By having versions
6565 of the ASN1 functions that just operate on content octets
6566 IMPLICIT tagging can be handled properly. It also allows
6567 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
6568 and ASN1_INTEGER are identical apart from the tag.
6571 *) Change the handling of OID objects as follows:
6573 - New object identifiers are inserted in objects.txt, following
6574 the syntax given in objects.README.
6575 - objects.pl is used to process obj_mac.num and create a new
6577 - obj_dat.pl is used to create a new obj_dat.h, using the data in
6580 This is currently kind of a hack, and the perl code in objects.pl
6581 isn't very elegant, but it works as I intended. The simplest way
6582 to check that it worked correctly is to look in obj_dat.h and
6583 check the array nid_objs and make sure the objects haven't moved
6584 around (this is important!). Additions are OK, as well as
6585 consistent name changes.
6588 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
6591 *) Addition of the command line parameter '-rand file' to 'openssl req'.
6592 The given file adds to whatever has already been seeded into the
6593 random pool through the RANDFILE configuration file option or
6594 environment variable, or the default random state file.
6597 *) mkstack.pl now sorts each macro group into lexical order.
6598 Previously the output order depended on the order the files
6599 appeared in the directory, resulting in needless rewriting
6603 *) Patches to make OpenSSL compile under Win32 again. Mostly
6604 work arounds for the VC++ problem that it treats func() as
6605 func(void). Also stripped out the parts of mkdef.pl that
6606 added extra typesafe functions: these no longer exist.
6609 *) Reorganisation of the stack code. The macros are now all
6610 collected in safestack.h . Each macro is defined in terms of
6611 a "stack macro" of the form SKM_<name>(type, a, b). The
6612 DEBUG_SAFESTACK is now handled in terms of function casts,
6613 this has the advantage of retaining type safety without the
6614 use of additional functions. If DEBUG_SAFESTACK is not defined
6615 then the non typesafe macros are used instead. Also modified the
6616 mkstack.pl script to handle the new form. Needs testing to see
6617 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
6618 the default if no major problems. Similar behaviour for ASN1_SET_OF
6619 and PKCS12_STACK_OF.
6622 *) When some versions of IIS use the 'NET' form of private key the
6623 key derivation algorithm is different. Normally MD5(password) is
6624 used as a 128 bit RC4 key. In the modified case
6625 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
6626 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
6627 as the old Netscape_RSA functions except they have an additional
6628 'sgckey' parameter which uses the modified algorithm. Also added
6629 an -sgckey command line option to the rsa utility. Thanks to
6630 Adrian Peck <bertie@ncipher.com> for posting details of the modified
6631 algorithm to openssl-dev.
6634 *) The evp_local.h macros were using 'c.##kname' which resulted in
6635 invalid expansion on some systems (SCO 5.0.5 for example).
6636 Corrected to 'c.kname'.
6637 [Phillip Porch <root@theporch.com>]
6639 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
6640 a STACK of email addresses from a certificate or request, these look
6641 in the subject name and the subject alternative name extensions and
6642 omit any duplicate addresses.
6645 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
6646 This makes DSA verification about 2 % faster.
6649 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
6650 (meaning that now 2^5 values will be precomputed, which is only 4 KB
6651 plus overhead for 1024 bit moduli).
6652 This makes exponentiations about 0.5 % faster for 1024 bit
6653 exponents (as measured by "openssl speed rsa2048").
6656 *) Rename memory handling macros to avoid conflicts with other
6658 Malloc => OPENSSL_malloc
6659 Malloc_locked => OPENSSL_malloc_locked
6660 Realloc => OPENSSL_realloc
6661 Free => OPENSSL_free
6664 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
6665 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
6668 *) CygWin32 support.
6669 [John Jarvie <jjarvie@newsguy.com>]
6671 *) The type-safe stack code has been rejigged. It is now only compiled
6672 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
6673 by default all type-specific stack functions are "#define"d back to
6674 standard stack functions. This results in more streamlined output
6675 but retains the type-safety checking possibilities of the original
6679 *) The STACK code has been cleaned up, and certain type declarations
6680 that didn't make a lot of sense have been brought in line. This has
6681 also involved a cleanup of sorts in safestack.h to more correctly
6682 map type-safe stack functions onto their plain stack counterparts.
6683 This work has also resulted in a variety of "const"ifications of
6684 lots of the code, especially "_cmp" operations which should normally
6685 be prototyped with "const" parameters anyway.
6688 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
6689 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
6690 (The PRNG state consists of two parts, the large pool 'state' and 'md',
6691 where all of 'md' is used each time the PRNG is used, but 'state'
6692 is used only indexed by a cyclic counter. As entropy may not be
6693 well distributed from the beginning, 'md' is important as a
6694 chaining variable. However, the output function chains only half
6695 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
6696 all of 'md', and seeding with STATE_SIZE dummy bytes will result
6697 in all of 'state' being rewritten, with the new values depending
6698 on virtually all of 'md'. This overcomes the 80 bit limitation.)
6701 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
6702 the handshake is continued after ssl_verify_cert_chain();
6703 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
6704 can lead to 'unexplainable' connection aborts later.
6705 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
6707 *) Major EVP API cipher revision.
6708 Add hooks for extra EVP features. This allows various cipher
6709 parameters to be set in the EVP interface. Support added for variable
6710 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
6711 setting of RC2 and RC5 parameters.
6713 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
6716 Remove lots of duplicated code from the EVP library. For example *every*
6717 cipher init() function handles the 'iv' in the same way according to the
6718 cipher mode. They also all do nothing if the 'key' parameter is NULL and
6719 for CFB and OFB modes they zero ctx->num.
6721 New functionality allows removal of S/MIME code RC2 hack.
6723 Most of the routines have the same form and so can be declared in terms
6726 By shifting this to the top level EVP_CipherInit() it can be removed from
6727 all individual ciphers. If the cipher wants to handle IVs or keys
6728 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
6731 Change lots of functions like EVP_EncryptUpdate() to now return a
6732 value: although software versions of the algorithms cannot fail
6733 any installed hardware versions can.
6736 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
6737 this option is set, tolerate broken clients that send the negotiated
6738 protocol version number instead of the requested protocol version
6742 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
6743 i.e. non-zero for export ciphersuites, zero otherwise.
6744 Previous versions had this flag inverted, inconsistent with
6745 rsa_tmp_cb (..._TMP_RSA_CB).
6746 [Bodo Moeller; problem reported by Amit Chopra]
6748 *) Add missing DSA library text string. Work around for some IIS
6749 key files with invalid SEQUENCE encoding.
6752 *) Add a document (doc/standards.txt) that list all kinds of standards
6753 and so on that are implemented in OpenSSL.
6756 *) Enhance c_rehash script. Old version would mishandle certificates
6757 with the same subject name hash and wouldn't handle CRLs at all.
6758 Added -fingerprint option to crl utility, to support new c_rehash
6762 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6765 *) Fix for SSL server purpose checking. Server checking was
6766 rejecting certificates which had extended key usage present
6767 but no ssl client purpose.
6768 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6770 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6771 is a little unclear about how a blank password is handled.
6772 Since the password in encoded as a BMPString with terminating
6773 double NULL a zero length password would end up as just the
6774 double NULL. However no password at all is different and is
6775 handled differently in the PKCS#12 key generation code. NS
6776 treats a blank password as zero length. MSIE treats it as no
6777 password on export: but it will try both on import. We now do
6778 the same: PKCS12_parse() tries zero length and no password if
6779 the password is set to "" or NULL (NULL is now a valid password:
6780 it wasn't before) as does the pkcs12 application.
6783 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6784 perror when PEM_read_bio_X509_REQ fails, the error message must
6785 be obtained from the error queue.
6788 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6789 it in ERR_remove_state if appropriate, and change ERR_get_state
6790 accordingly to avoid race conditions (this is necessary because
6791 thread_hash is no longer constant once set).
6794 *) Bugfix for linux-elf makefile.one.
6797 *) RSA_get_default_method() will now cause a default
6798 RSA_METHOD to be chosen if one doesn't exist already.
6799 Previously this was only set during a call to RSA_new()
6800 or RSA_new_method(NULL) meaning it was possible for
6801 RSA_get_default_method() to return NULL.
6804 *) Added native name translation to the existing DSO code
6805 that will convert (if the flag to do so is set) filenames
6806 that are sufficiently small and have no path information
6807 into a canonical native form. Eg. "blah" converted to
6808 "libblah.so" or "blah.dll" etc.
6811 *) New function ERR_error_string_n(e, buf, len) which is like
6812 ERR_error_string(e, buf), but writes at most 'len' bytes
6813 including the 0 terminator. For ERR_error_string_n, 'buf'
6815 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6817 *) CONF library reworked to become more general. A new CONF
6818 configuration file reader "class" is implemented as well as a
6819 new functions (NCONF_*, for "New CONF") to handle it. The now
6820 old CONF_* functions are still there, but are reimplemented to
6821 work in terms of the new functions. Also, a set of functions
6822 to handle the internal storage of the configuration data is
6823 provided to make it easier to write new configuration file
6824 reader "classes" (I can definitely see something reading a
6825 configuration file in XML format, for example), called _CONF_*,
6826 or "the configuration storage API"...
6828 The new configuration file reading functions are:
6830 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6831 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6833 NCONF_default, NCONF_WIN32
6835 NCONF_dump_fp, NCONF_dump_bio
6837 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6838 NCONF_new creates a new CONF object. This works in the same way
6839 as other interfaces in OpenSSL, like the BIO interface.
6840 NCONF_dump_* dump the internal storage of the configuration file,
6841 which is useful for debugging. All other functions take the same
6842 arguments as the old CONF_* functions wth the exception of the
6843 first that must be a `CONF *' instead of a `LHASH *'.
6845 To make it easer to use the new classes with the old CONF_* functions,
6846 the function CONF_set_default_method is provided.
6849 *) Add '-tls1' option to 'openssl ciphers', which was already
6850 mentioned in the documentation but had not been implemented.
6851 (This option is not yet really useful because even the additional
6852 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6855 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6856 OpenSSL-based applications) load shared libraries and bind to
6857 them in a portable way.
6858 [Geoff Thorpe, with contributions from Richard Levitte]
6860 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6862 *) Make sure _lrotl and _lrotr are only used with MSVC.
6864 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6865 (the default implementation of RAND_status).
6867 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6868 to '-clrext' (= clear extensions), as intended and documented.
6869 [Bodo Moeller; inconsistency pointed out by Michael Attili
6872 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6873 was larger than the MD block size.
6874 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6876 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6877 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6878 using the passed key: if the passed key was a private key the result
6879 of X509_print(), for example, would be to print out all the private key
6883 *) des_quad_cksum() byte order bug fix.
6884 [Ulf Möller, using the problem description in krb4-0.9.7, where
6885 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6887 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6889 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6891 *) For easily testing in shell scripts whether some command
6892 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6893 returns with exit code 0 iff no command of the given name is available.
6894 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6895 the output goes to stdout and nothing is printed to stderr.
6896 Additional arguments are always ignored.
6898 Since for each cipher there is a command of the same name,
6899 the 'no-cipher' compilation switches can be tested this way.
6901 ('openssl no-XXX' is not able to detect pseudo-commands such
6902 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6905 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6908 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6909 is set; it will be thrown away anyway because each handshake creates
6911 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6912 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6913 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6914 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6917 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6918 'Q' and 'R' lose their special meanings (quit/renegotiate).
6919 This is part of what -quiet does; unlike -quiet, -ign_eof
6920 does not suppress any output.
6923 *) Add compatibility options to the purpose and trust code. The
6924 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6925 accepts a certificate or CA, this was the previous behaviour,
6926 with all the associated security issues.
6928 X509_TRUST_COMPAT is the old trust behaviour: only and
6929 automatically trust self signed roots in certificate store. A
6930 new trust setting X509_TRUST_DEFAULT is used to specify that
6931 a purpose has no associated trust setting and it should instead
6932 use the value in the default purpose.
6935 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6936 and fix a memory leak.
6939 *) In util/mkerr.pl (which implements 'make errors'), preserve
6940 reason strings from the previous version of the .c file, as
6941 the default to have only downcase letters (and digits) in
6942 automatically generated reasons codes is not always appropriate.
6945 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6946 using strerror. Previously, ERR_reason_error_string() returned
6947 library names as reason strings for SYSerr; but SYSerr is a special
6948 case where small numbers are errno values, not library numbers.
6951 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6952 converts DSA parameters into DH parameters. (When creating parameters,
6953 DSA_generate_parameters is used.)
6956 *) Include 'length' (recommended exponent length) in C code generated
6957 by 'openssl dhparam -C'.
6960 *) The second argument to set_label in perlasm was already being used
6961 so couldn't be used as a "file scope" flag. Moved to third argument
6965 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6966 instead of RAND_bytes for encryption IVs and salts.
6969 *) Include RAND_status() into RAND_METHOD instead of implementing
6970 it only for md_rand.c Otherwise replacing the PRNG by calling
6971 RAND_set_rand_method would be impossible.
6974 *) Don't let DSA_generate_key() enter an infinite loop if the random
6975 number generation fails.
6978 *) New 'rand' application for creating pseudo-random output.
6981 *) Added configuration support for Linux/IA64
6982 [Rolf Haberrecker <rolf@suse.de>]
6984 *) Assembler module support for Mingw32.
6987 *) Shared library support for HPUX (in shlib/).
6988 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6990 *) Shared library support for Solaris gcc.
6991 [Lutz Behnke <behnke@trustcenter.de>]
6993 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6995 *) PKCS7_encrypt() was adding text MIME headers twice because they
6996 were added manually and by SMIME_crlf_copy().
6999 *) In bntest.c don't call BN_rand with zero bits argument.
7000 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7002 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7003 case was implemented. This caused BN_div_recp() to fail occasionally.
7006 *) Add an optional second argument to the set_label() in the perl
7007 assembly language builder. If this argument exists and is set
7008 to 1 it signals that the assembler should use a symbol whose
7009 scope is the entire file, not just the current function. This
7010 is needed with MASM which uses the format label:: for this scope.
7011 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7013 *) Change the ASN1 types so they are typedefs by default. Before
7014 almost all types were #define'd to ASN1_STRING which was causing
7015 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7019 *) Change names of new functions to the new get1/get0 naming
7020 convention: After 'get1', the caller owns a reference count
7021 and has to call ..._free; 'get0' returns a pointer to some
7022 data structure without incrementing reference counters.
7023 (Some of the existing 'get' functions increment a reference
7024 counter, some don't.)
7025 Similarly, 'set1' and 'add1' functions increase reference
7026 counters or duplicate objects.
7029 *) Allow for the possibility of temp RSA key generation failure:
7030 the code used to assume it always worked and crashed on failure.
7033 *) Fix potential buffer overrun problem in BIO_printf().
7034 [Ulf Möller, using public domain code by Patrick Powell; problem
7035 pointed out by David Sacerdote <das33@cornell.edu>]
7037 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7038 RAND_egd() and RAND_status(). In the command line application,
7039 the EGD socket can be specified like a seed file using RANDFILE
7043 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7044 Some CAs (e.g. Verisign) distribute certificates in this form.
7047 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7048 list to exclude them. This means that no special compilation option
7049 is needed to use anonymous DH: it just needs to be included in the
7053 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7054 EVP_MD_type. The old functionality is available in a new macro called
7055 EVP_MD_md(). Change code that uses it and update docs.
7058 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7059 where the 'void *' argument is replaced by a function pointer argument.
7060 Previously 'void *' was abused to point to functions, which works on
7061 many platforms, but is not correct. As these functions are usually
7062 called by macros defined in OpenSSL header files, most source code
7063 should work without changes.
7066 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7067 sections with information on -D... compiler switches used for
7068 compiling the library so that applications can see them. To enable
7069 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7070 must be defined. E.g.,
7071 #define OPENSSL_ALGORITHM_DEFINES
7072 #include <openssl/opensslconf.h>
7073 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7074 [Richard Levitte, Ulf and Bodo Möller]
7076 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7080 *) Change the 'other' type in certificate aux info to a STACK_OF
7081 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7082 the required ASN1 format: arbitrary types determined by an OID.
7085 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7086 argument to 'req'. This is not because the function is newer or
7087 better than others it just uses the work 'NEW' in the certificate
7088 request header lines. Some software needs this.
7091 *) Reorganise password command line arguments: now passwords can be
7092 obtained from various sources. Delete the PEM_cb function and make
7093 it the default behaviour: i.e. if the callback is NULL and the
7094 usrdata argument is not NULL interpret it as a null terminated pass
7095 phrase. If usrdata and the callback are NULL then the pass phrase
7096 is prompted for as usual.
7099 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7100 the support is automatically enabled. The resulting binaries will
7101 autodetect the card and use it if present.
7102 [Ben Laurie and Compaq Inc.]
7104 *) Work around for Netscape hang bug. This sends certificate request
7105 and server done in one record. Since this is perfectly legal in the
7106 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7107 the bugs/SSLv3 entry for more info.
7110 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7113 *) Add -rand argument to smime and pkcs12 applications and read/write
7117 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7120 *) Add command line password options to the remaining applications.
7123 *) Bug fix for BN_div_recp() for numerators with an even number of
7127 *) More tests in bntest.c, and changed test_bn output.
7130 *) ./config recognizes MacOS X now.
7133 *) Bug fix for BN_div() when the first words of num and divsor are
7134 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7137 *) Add support for various broken PKCS#8 formats, and command line
7138 options to produce them.
7141 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7142 get temporary BIGNUMs from a BN_CTX.
7145 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7149 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7150 include a #define from the old name to the new. The original intent
7151 was that statically linked binaries could for example just call
7152 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7153 link with digests. This never worked becayse SSLeay_add_all_digests()
7154 and SSLeay_add_all_ciphers() were in the same source file so calling
7155 one would link with the other. They are now in separate source files.
7158 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7161 *) Use a less unusual form of the Miller-Rabin primality test (it used
7162 a binary algorithm for exponentiation integrated into the Miller-Rabin
7163 loop, our standard modexp algorithms are faster).
7166 *) Support for the EBCDIC character set completed.
7167 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7169 *) Source code cleanups: use const where appropriate, eliminate casts,
7170 use void * instead of char * in lhash.
7173 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7174 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7175 this the server could overwrite ephemeral keys that the client
7179 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7180 using 50 iterations of the Rabin-Miller test.
7182 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7183 iterations of the Rabin-Miller test as required by the appendix
7184 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7185 As BN_is_prime_fasttest includes trial division, DSA parameter
7186 generation becomes much faster.
7188 This implies a change for the callback functions in DSA_is_prime
7189 and DSA_generate_parameters: The callback function is called once
7190 for each positive witness in the Rabin-Miller test, not just
7191 occasionally in the inner loop; and the parameters to the
7192 callback function now provide an iteration count for the outer
7193 loop rather than for the current invocation of the inner loop.
7194 DSA_generate_parameters additionally can call the callback
7195 function with an 'iteration count' of -1, meaning that a
7196 candidate has passed the trial division test (when q is generated
7197 from an application-provided seed, trial division is skipped).
7200 *) New function BN_is_prime_fasttest that optionally does trial
7201 division before starting the Rabin-Miller test and has
7202 an additional BN_CTX * argument (whereas BN_is_prime always
7203 has to allocate at least one BN_CTX).
7204 'callback(1, -1, cb_arg)' is called when a number has passed the
7205 trial division stage.
7208 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7212 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7215 *) New function BN_pseudo_rand().
7218 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7219 bignum version of BN_from_montgomery() with the working code from
7220 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7224 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7225 made it impossible to use the same SSL_SESSION data structure in
7226 SSL2 clients in multiple threads.
7229 *) The return value of RAND_load_file() no longer counts bytes obtained
7230 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7231 to seed the PRNG (previously an explicit byte count was required).
7232 [Ulf Möller, Bodo Möller]
7234 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7235 used (char *) instead of (void *) and had casts all over the place.
7238 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7241 *) Retain source code compatibility for BN_prime_checks macro:
7242 BN_is_prime(..., BN_prime_checks, ...) now uses
7243 BN_prime_checks_for_size to determine the appropriate number of
7244 Rabin-Miller iterations.
7247 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7248 DH_CHECK_P_NOT_SAFE_PRIME.
7249 (Check if this is true? OpenPGP calls them "strong".)
7252 *) Merge the functionality of "dh" and "gendh" programs into a new program
7253 "dhparam". The old programs are retained for now but will handle DH keys
7254 (instead of parameters) in future.
7257 *) Make the ciphers, s_server and s_client programs check the return values
7258 when a new cipher list is set.
7261 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7262 ciphers. Before when the 56bit ciphers were enabled the sorting was
7265 The syntax for the cipher sorting has been extended to support sorting by
7266 cipher-strength (using the strength_bits hard coded in the tables).
7267 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7269 Fix a bug in the cipher-command parser: when supplying a cipher command
7270 string with an "undefined" symbol (neither command nor alphanumeric
7271 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7272 an error is flagged.
7274 Due to the strength-sorting extension, the code of the
7275 ssl_create_cipher_list() function was completely rearranged. I hope that
7276 the readability was also increased :-)
7277 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7279 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7280 for the first serial number and places 2 in the serial number file. This
7281 avoids problems when the root CA is created with serial number zero and
7282 the first user certificate has the same issuer name and serial number
7286 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7287 the new code. Add documentation for this stuff.
7290 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7291 X509_*() to X509at_*() on the grounds that they don't handle X509
7292 structures and behave in an analagous way to the X509v3 functions:
7293 they shouldn't be called directly but wrapper functions should be used
7296 So we also now have some wrapper functions that call the X509at functions
7297 when passed certificate requests. (TO DO: similar things can be done with
7298 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7299 things. Some of these need some d2i or i2d and print functionality
7300 because they handle more complex structures.)
7303 *) Add missing #ifndefs that caused missing symbols when building libssl
7304 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7305 NO_RSA in ssl/s2*.c.
7306 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7308 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7309 has a return value which indicates the quality of the random data
7310 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7311 error queue. New function RAND_pseudo_bytes() generates output that is
7312 guaranteed to be unique but not unpredictable. RAND_add is like
7313 RAND_seed, but takes an extra argument for an entropy estimate
7314 (RAND_seed always assumes full entropy).
7317 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7318 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7319 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7320 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7321 false-positive rate of at most 2^-80 for random input.
7324 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7327 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7328 in the 0.9.5 release), this returns the chain
7329 from an X509_CTX structure with a dup of the stack and all
7330 the X509 reference counts upped: so the stack will exist
7331 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7334 Also make SSL_SESSION_print() print out the verify return
7338 *) Add manpage for the pkcs12 command. Also change the default
7339 behaviour so MAC iteration counts are used unless the new
7340 -nomaciter option is used. This improves file security and
7341 only older versions of MSIE (4.0 for example) need it.
7344 *) Honor the no-xxx Configure options when creating .DEF files.
7347 *) Add PKCS#10 attributes to field table: challengePassword,
7348 unstructuredName and unstructuredAddress. These are taken from
7349 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7350 international characters are used.
7352 More changes to X509_ATTRIBUTE code: allow the setting of types
7353 based on strings. Remove the 'loc' parameter when adding
7354 attributes because these will be a SET OF encoding which is sorted
7358 *) Initial changes to the 'req' utility to allow request generation
7359 automation. This will allow an application to just generate a template
7360 file containing all the field values and have req construct the
7363 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7364 used all over the place including certificate requests and PKCS#7
7365 structures. They are currently handled manually where necessary with
7366 some primitive wrappers for PKCS#7. The new functions behave in a
7367 manner analogous to the X509 extension functions: they allow
7368 attributes to be looked up by NID and added.
7370 Later something similar to the X509V3 code would be desirable to
7371 automatically handle the encoding, decoding and printing of the
7372 more complex types. The string types like challengePassword can
7373 be handled by the string table functions.
7375 Also modified the multi byte string table handling. Now there is
7376 a 'global mask' which masks out certain types. The table itself
7377 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7378 is useful when for example there is only one permissible type
7379 (as in countryName) and using the mask might result in no valid
7383 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7384 SSL_get_peer_finished to allow applications to obtain the latest
7385 Finished messages sent to the peer or expected from the peer,
7386 respectively. (SSL_get_peer_finished is usually the Finished message
7387 actually received from the peer, otherwise the protocol will be aborted.)
7389 As the Finished message are message digests of the complete handshake
7390 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7391 be used for external authentication procedures when the authentication
7392 provided by SSL/TLS is not desired or is not enough.
7395 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7396 the host supports BWX extension and if Compaq C is present on the
7397 $PATH. Just exploiting of the BWX extension results in 20-30%
7398 performance kick for some algorithms, e.g. DES and RC4 to mention
7399 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7403 *) Add support for MS "fast SGC". This is arguably a violation of the
7404 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7405 weak crypto and after checking the certificate is SGC a second one
7406 with strong crypto. MS SGC stops the first handshake after receiving
7407 the server certificate message and sends a second client hello. Since
7408 a server will typically do all the time consuming operations before
7409 expecting any further messages from the client (server key exchange
7410 is the most expensive) there is little difference between the two.
7412 To get OpenSSL to support MS SGC we have to permit a second client
7413 hello message after we have sent server done. In addition we have to
7414 reset the MAC if we do get this second client hello.
7417 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7418 if a DER encoded private key is RSA or DSA traditional format. Changed
7419 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7420 format DER encoded private key. Newer code should use PKCS#8 format which
7421 has the key type encoded in the ASN1 structure. Added DER private key
7422 support to pkcs8 application.
7425 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7426 ciphersuites has been selected (as required by the SSL 3/TLS 1
7427 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7428 is set, we interpret this as a request to violate the specification
7429 (the worst that can happen is a handshake failure, and 'correct'
7430 behaviour would result in a handshake failure anyway).
7433 *) In SSL_CTX_add_session, take into account that there might be multiple
7434 SSL_SESSION structures with the same session ID (e.g. when two threads
7435 concurrently obtain them from an external cache).
7436 The internal cache can handle only one SSL_SESSION with a given ID,
7437 so if there's a conflict, we now throw out the old one to achieve
7441 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7442 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7443 some routines that use cipher OIDs: some ciphers do not have OIDs
7444 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7448 *) Simplify the trust setting structure and code. Now we just have
7449 two sequences of OIDs for trusted and rejected settings. These will
7450 typically have values the same as the extended key usage extension
7451 and any application specific purposes.
7453 The trust checking code now has a default behaviour: it will just
7454 check for an object with the same NID as the passed id. Functions can
7455 be provided to override either the default behaviour or the behaviour
7456 for a given id. SSL client, server and email already have functions
7457 in place for compatibility: they check the NID and also return "trusted"
7458 if the certificate is self signed.
7461 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7462 traditional format into an EVP_PKEY structure.
7465 *) Add a password callback function PEM_cb() which either prompts for
7466 a password if usr_data is NULL or otherwise assumes it is a null
7467 terminated password. Allow passwords to be passed on command line
7468 environment or config files in a few more utilities.
7471 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7472 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7473 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7474 Update documentation.
7477 *) Support for ASN1 "NULL" type. This could be handled before by using
7478 ASN1_TYPE but there wasn't any function that would try to read a NULL
7479 and produce an error if it couldn't. For compatibility we also have
7480 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7481 don't allocate anything because they don't need to.
7484 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
7486 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
7488 *) Rebuild of the memory allocation routines used by OpenSSL code and
7489 possibly others as well. The purpose is to make an interface that
7490 provide hooks so anyone can build a separate set of allocation and
7491 deallocation routines to be used by OpenSSL, for example memory
7492 pool implementations, or something else, which was previously hard
7493 since Malloc(), Realloc() and Free() were defined as macros having
7494 the values malloc, realloc and free, respectively (except for Win32
7495 compilations). The same is provided for memory debugging code.
7496 OpenSSL already comes with functionality to find memory leaks, but
7497 this gives people a chance to debug other memory problems.
7499 With these changes, a new set of functions and macros have appeared:
7501 CRYPTO_set_mem_debug_functions() [F]
7502 CRYPTO_get_mem_debug_functions() [F]
7503 CRYPTO_dbg_set_options() [F]
7504 CRYPTO_dbg_get_options() [F]
7505 CRYPTO_malloc_debug_init() [M]
7507 The memory debug functions are NULL by default, unless the library
7508 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
7509 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
7510 gives the standard debugging functions that come with OpenSSL) or
7511 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
7512 provided by the library user) must be used. When the standard
7513 debugging functions are used, CRYPTO_dbg_set_options can be used to
7514 request additional information:
7515 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
7516 the CRYPTO_MDEBUG_xxx macro when compiling the library.
7518 Also, things like CRYPTO_set_mem_functions will always give the
7519 expected result (the new set of functions is used for allocation
7520 and deallocation) at all times, regardless of platform and compiler
7523 To finish it up, some functions that were never use in any other
7524 way than through macros have a new API and new semantic:
7527 CRYPTO_dbg_realloc()
7530 All macros of value have retained their old syntax.
7531 [Richard Levitte and Bodo Moeller]
7533 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
7534 ordering of SMIMECapabilities wasn't in "strength order" and there
7535 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
7539 *) Some ASN1 types with illegal zero length encoding (INTEGER,
7540 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
7541 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
7543 *) Merge in my S/MIME library for OpenSSL. This provides a simple
7544 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
7545 functionality to handle multipart/signed properly) and a utility
7546 called 'smime' to call all this stuff. This is based on code I
7547 originally wrote for Celo who have kindly allowed it to be
7548 included in OpenSSL.
7551 *) Add variants des_set_key_checked and des_set_key_unchecked of
7552 des_set_key (aka des_key_sched). Global variable des_check_key
7553 decides which of these is called by des_set_key; this way
7554 des_check_key behaves as it always did, but applications and
7555 the library itself, which was buggy for des_check_key == 1,
7556 have a cleaner way to pick the version they need.
7559 *) New function PKCS12_newpass() which changes the password of a
7563 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
7564 dynamic mix. In both cases the ids can be used as an index into the
7565 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
7566 functions so they accept a list of the field values and the
7567 application doesn't need to directly manipulate the X509_TRUST
7571 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
7575 *) Modify the way the V3 extension code looks up extensions. This now
7576 works in a similar way to the object code: we have some "standard"
7577 extensions in a static table which is searched with OBJ_bsearch()
7578 and the application can add dynamic ones if needed. The file
7579 crypto/x509v3/ext_dat.h now has the info: this file needs to be
7580 updated whenever a new extension is added to the core code and kept
7581 in ext_nid order. There is a simple program 'tabtest.c' which checks
7582 this. New extensions are not added too often so this file can readily
7583 be maintained manually.
7585 There are two big advantages in doing things this way. The extensions
7586 can be looked up immediately and no longer need to be "added" using
7587 X509V3_add_standard_extensions(): this function now does nothing.
7588 [Side note: I get *lots* of email saying the extension code doesn't
7589 work because people forget to call this function]
7590 Also no dynamic allocation is done unless new extensions are added:
7591 so if we don't add custom extensions there is no need to call
7592 X509V3_EXT_cleanup().
7595 *) Modify enc utility's salting as follows: make salting the default. Add a
7596 magic header, so unsalted files fail gracefully instead of just decrypting
7597 to garbage. This is because not salting is a big security hole, so people
7598 should be discouraged from doing it.
7601 *) Fixes and enhancements to the 'x509' utility. It allowed a message
7602 digest to be passed on the command line but it only used this
7603 parameter when signing a certificate. Modified so all relevant
7604 operations are affected by the digest parameter including the
7605 -fingerprint and -x509toreq options. Also -x509toreq choked if a
7606 DSA key was used because it didn't fix the digest.
7609 *) Initial certificate chain verify code. Currently tests the untrusted
7610 certificates for consistency with the verify purpose (which is set
7611 when the X509_STORE_CTX structure is set up) and checks the pathlength.
7613 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
7614 this is because it will reject chains with invalid extensions whereas
7615 every previous version of OpenSSL and SSLeay made no checks at all.
7617 Trust code: checks the root CA for the relevant trust settings. Trust
7618 settings have an initial value consistent with the verify purpose: e.g.
7619 if the verify purpose is for SSL client use it expects the CA to be
7620 trusted for SSL client use. However the default value can be changed to
7621 permit custom trust settings: one example of this would be to only trust
7622 certificates from a specific "secure" set of CAs.
7624 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
7625 which should be used for version portability: especially since the
7626 verify structure is likely to change more often now.
7628 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
7629 to set them. If not set then assume SSL clients will verify SSL servers
7632 Two new options to the verify program: -untrusted allows a set of
7633 untrusted certificates to be passed in and -purpose which sets the
7634 intended purpose of the certificate. If a purpose is set then the
7635 new chain verify code is used to check extension consistency.
7638 *) Support for the authority information access extension.
7641 *) Modify RSA and DSA PEM read routines to transparently handle
7642 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
7643 public keys in a format compatible with certificate
7644 SubjectPublicKeyInfo structures. Unfortunately there were already
7645 functions called *_PublicKey_* which used various odd formats so
7646 these are retained for compatibility: however the DSA variants were
7647 never in a public release so they have been deleted. Changed dsa/rsa
7648 utilities to handle the new format: note no releases ever handled public
7649 keys so we should be OK.
7651 The primary motivation for this change is to avoid the same fiasco
7652 that dogs private keys: there are several incompatible private key
7653 formats some of which are standard and some OpenSSL specific and
7654 require various evil hacks to allow partial transparent handling and
7655 even then it doesn't work with DER formats. Given the option anything
7656 other than PKCS#8 should be dumped: but the other formats have to
7657 stay in the name of compatibility.
7659 With public keys and the benefit of hindsight one standard format
7660 is used which works with EVP_PKEY, RSA or DSA structures: though
7661 it clearly returns an error if you try to read the wrong kind of key.
7663 Added a -pubkey option to the 'x509' utility to output the public key.
7664 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
7665 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
7666 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
7667 that do the same as the EVP_PKEY_assign_*() except they up the
7668 reference count of the added key (they don't "swallow" the
7672 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
7673 CRLs would fail if the file contained no certificates or no CRLs:
7674 added a new function to read in both types and return the number
7675 read: this means that if none are read it will be an error. The
7676 DER versions of the certificate and CRL reader would always fail
7677 because it isn't possible to mix certificates and CRLs in DER format
7678 without choking one or the other routine. Changed this to just read
7679 a certificate: this is the best we can do. Also modified the code
7680 in apps/verify.c to take notice of return codes: it was previously
7681 attempting to read in certificates from NULL pointers and ignoring
7682 any errors: this is one reason why the cert and CRL reader seemed
7683 to work. It doesn't check return codes from the default certificate
7684 routines: these may well fail if the certificates aren't installed.
7687 *) Code to support otherName option in GeneralName.
7690 *) First update to verify code. Change the verify utility
7691 so it warns if it is passed a self signed certificate:
7692 for consistency with the normal behaviour. X509_verify
7693 has been modified to it will now verify a self signed
7694 certificate if *exactly* the same certificate appears
7695 in the store: it was previously impossible to trust a
7696 single self signed certificate. This means that:
7697 openssl verify ss.pem
7698 now gives a warning about a self signed certificate but
7699 openssl verify -CAfile ss.pem ss.pem
7703 *) For servers, store verify_result in SSL_SESSION data structure
7704 (and add it to external session representation).
7705 This is needed when client certificate verifications fails,
7706 but an application-provided verification callback (set by
7707 SSL_CTX_set_cert_verify_callback) allows accepting the session
7708 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
7709 but returns 1): When the session is reused, we have to set
7710 ssl->verify_result to the appropriate error code to avoid
7712 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
7714 *) Fix a bug in the new PKCS#7 code: it didn't consider the
7715 case in PKCS7_dataInit() where the signed PKCS7 structure
7716 didn't contain any existing data because it was being created.
7717 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
7719 *) Add a salt to the key derivation routines in enc.c. This
7720 forms the first 8 bytes of the encrypted file. Also add a
7721 -S option to allow a salt to be input on the command line.
7724 *) New function X509_cmp(). Oddly enough there wasn't a function
7725 to compare two certificates. We do this by working out the SHA1
7726 hash and comparing that. X509_cmp() will be needed by the trust
7730 *) SSL_get1_session() is like SSL_get_session(), but increments
7731 the reference count in the SSL_SESSION returned.
7732 [Geoff Thorpe <geoff@eu.c2.net>]
7734 *) Fix for 'req': it was adding a null to request attributes.
7735 Also change the X509_LOOKUP and X509_INFO code to handle
7736 certificate auxiliary information.
7739 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
7743 *) Add the possibility to add extra information to the memory leak
7744 detecting output, to form tracebacks, showing from where each
7745 allocation was originated: CRYPTO_push_info("constant string") adds
7746 the string plus current file name and line number to a per-thread
7747 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
7748 is like calling CYRPTO_pop_info() until the stack is empty.
7749 Also updated memory leak detection code to be multi-thread-safe.
7752 *) Add options -text and -noout to pkcs7 utility and delete the
7753 encryption options which never did anything. Update docs.
7756 *) Add options to some of the utilities to allow the pass phrase
7757 to be included on either the command line (not recommended on
7758 OSes like Unix) or read from the environment. Update the
7759 manpages and fix a few bugs.
7762 *) Add a few manpages for some of the openssl commands.
7765 *) Fix the -revoke option in ca. It was freeing up memory twice,
7766 leaking and not finding already revoked certificates.
7769 *) Extensive changes to support certificate auxiliary information.
7770 This involves the use of X509_CERT_AUX structure and X509_AUX
7771 functions. An X509_AUX function such as PEM_read_X509_AUX()
7772 can still read in a certificate file in the usual way but it
7773 will also read in any additional "auxiliary information". By
7774 doing things this way a fair degree of compatibility can be
7775 retained: existing certificates can have this information added
7776 using the new 'x509' options.
7778 Current auxiliary information includes an "alias" and some trust
7779 settings. The trust settings will ultimately be used in enhanced
7780 certificate chain verification routines: currently a certificate
7781 can only be trusted if it is self signed and then it is trusted
7785 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7786 The problem was that one of the replacement routines had not been working
7787 since SSLeay releases. For now the offending routine has been replaced
7788 with non-optimised assembler. Even so, this now gives around 95%
7789 performance improvement for 1024 bit RSA signs.
7792 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7793 handling. Most clients have the effective key size in bits equal to
7794 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7795 A few however don't do this and instead use the size of the decrypted key
7796 to determine the RC2 key length and the AlgorithmIdentifier to determine
7797 the effective key length. In this case the effective key length can still
7798 be 40 bits but the key length can be 168 bits for example. This is fixed
7799 by manually forcing an RC2 key into the EVP_PKEY structure because the
7800 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7801 the key length and effective key length are equal.
7804 *) Add a bunch of functions that should simplify the creation of
7805 X509_NAME structures. Now you should be able to do:
7806 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7807 and have it automatically work out the correct field type and fill in
7808 the structures. The more adventurous can try:
7809 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7810 and it will (hopefully) work out the correct multibyte encoding.
7813 *) Change the 'req' utility to use the new field handling and multibyte
7814 copy routines. Before the DN field creation was handled in an ad hoc
7815 way in req, ca, and x509 which was rather broken and didn't support
7816 BMPStrings or UTF8Strings. Since some software doesn't implement
7817 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7818 using the dirstring_type option. See the new comment in the default
7819 openssl.cnf for more info.
7822 *) Make crypto/rand/md_rand.c more robust:
7823 - Assure unique random numbers after fork().
7824 - Make sure that concurrent threads access the global counter and
7825 md serializably so that we never lose entropy in them
7826 or use exactly the same state in multiple threads.
7827 Access to the large state is not always serializable because
7828 the additional locking could be a performance killer, and
7829 md should be large enough anyway.
7832 *) New file apps/app_rand.c with commonly needed functionality
7833 for handling the random seed file.
7835 Use the random seed file in some applications that previously did not:
7837 dsaparam -genkey (which also ignored its '-rand' option),
7840 x509 (when signing).
7841 Except on systems with /dev/urandom, it is crucial to have a random
7842 seed file at least for key creation, DSA signing, and for DH exchanges;
7843 for RSA signatures we could do without one.
7845 gendh and gendsa (unlike genrsa) used to read only the first byte
7846 of each file listed in the '-rand' option. The function as previously
7847 found in genrsa is now in app_rand.c and is used by all programs
7848 that support '-rand'.
7851 *) In RAND_write_file, use mode 0600 for creating files;
7852 don't just chmod when it may be too late.
7855 *) Report an error from X509_STORE_load_locations
7856 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7859 *) New function ASN1_mbstring_copy() this copies a string in either
7860 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7861 into an ASN1_STRING type. A mask of permissible types is passed
7862 and it chooses the "minimal" type to use or an error if not type
7866 *) Add function equivalents to the various macros in asn1.h. The old
7867 macros are retained with an M_ prefix. Code inside the library can
7868 use the M_ macros. External code (including the openssl utility)
7869 should *NOT* in order to be "shared library friendly".
7872 *) Add various functions that can check a certificate's extensions
7873 to see if it usable for various purposes such as SSL client,
7874 server or S/MIME and CAs of these types. This is currently
7875 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7876 verification. Also added a -purpose flag to x509 utility to
7877 print out all the purposes.
7880 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7884 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7885 for, obtain and decode and extension and obtain its critical flag.
7886 This allows all the necessary extension code to be handled in a
7887 single function call.
7890 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7891 platforms. See crypto/rc4/rc4_enc.c for further details.
7894 *) New -noout option to asn1parse. This causes no output to be produced
7895 its main use is when combined with -strparse and -out to extract data
7896 from a file (which may not be in ASN.1 format).
7899 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7900 when producing the local key id.
7901 [Richard Levitte <levitte@stacken.kth.se>]
7903 *) New option -dhparam in s_server. This allows a DH parameter file to be
7904 stated explicitly. If it is not stated then it tries the first server
7905 certificate file. The previous behaviour hard coded the filename
7909 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7910 a public key to be input or output. For example:
7911 openssl rsa -in key.pem -pubout -out pubkey.pem
7912 Also added necessary DSA public key functions to handle this.
7915 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7916 in the message. This was handled by allowing
7917 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7918 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7920 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7921 to the end of the strings whereas this didn't. This would cause problems
7922 if strings read with d2i_ASN1_bytes() were later modified.
7923 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7925 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7926 data and it contains EOF it will end up returning an error. This is
7927 caused by input 46 bytes long. The cause is due to the way base64
7928 BIOs find the start of base64 encoded data. They do this by trying a
7929 trial decode on each line until they find one that works. When they
7930 do a flag is set and it starts again knowing it can pass all the
7931 data directly through the decoder. Unfortunately it doesn't reset
7932 the context it uses. This means that if EOF is reached an attempt
7933 is made to pass two EOFs through the context and this causes the
7934 resulting error. This can also cause other problems as well. As is
7935 usual with these problems it takes *ages* to find and the fix is
7936 trivial: move one line.
7937 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7939 *) Ugly workaround to get s_client and s_server working under Windows. The
7940 old code wouldn't work because it needed to select() on sockets and the
7941 tty (for keypresses and to see if data could be written). Win32 only
7942 supports select() on sockets so we select() with a 1s timeout on the
7943 sockets and then see if any characters are waiting to be read, if none
7944 are present then we retry, we also assume we can always write data to
7945 the tty. This isn't nice because the code then blocks until we've
7946 received a complete line of data and it is effectively polling the
7947 keyboard at 1s intervals: however it's quite a bit better than not
7948 working at all :-) A dedicated Windows application might handle this
7949 with an event loop for example.
7952 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7953 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7954 will be called when RSA_sign() and RSA_verify() are used. This is useful
7955 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7956 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7957 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7958 This necessitated the support of an extra signature type NID_md5_sha1
7959 for SSL signatures and modifications to the SSL library to use it instead
7960 of calling RSA_public_decrypt() and RSA_private_encrypt().
7963 *) Add new -verify -CAfile and -CApath options to the crl program, these
7964 will lookup a CRL issuers certificate and verify the signature in a
7965 similar way to the verify program. Tidy up the crl program so it
7966 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7967 less strict. It will now permit CRL extensions even if it is not
7968 a V2 CRL: this will allow it to tolerate some broken CRLs.
7971 *) Initialize all non-automatic variables each time one of the openssl
7972 sub-programs is started (this is necessary as they may be started
7973 multiple times from the "OpenSSL>" prompt).
7974 [Lennart Bang, Bodo Moeller]
7976 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7977 removing all other RSA functionality (this is what NO_RSA does). This
7978 is so (for example) those in the US can disable those operations covered
7979 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7983 *) Non-copying interface to BIO pairs.
7984 (still largely untested)
7987 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7988 ASCII string. This was handled independently in various places before.
7991 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7992 UTF8 strings a character at a time.
7995 *) Use client_version from client hello to select the protocol
7996 (s23_srvr.c) and for RSA client key exchange verification
7997 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8000 *) Add various utility functions to handle SPKACs, these were previously
8001 handled by poking round in the structure internals. Added new function
8002 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8003 print, verify and generate SPKACs. Based on an original idea from
8004 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8007 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8010 *) Allow the config file extension section to be overwritten on the
8011 command line. Based on an original idea from Massimiliano Pala
8012 <madwolf@comune.modena.it>. The new option is called -extensions
8013 and can be applied to ca, req and x509. Also -reqexts to override
8014 the request extensions in req and -crlexts to override the crl extensions
8018 *) Add new feature to the SPKAC handling in ca. Now you can include
8019 the same field multiple times by preceding it by "XXXX." for example:
8022 this is the same syntax as used in the req config file.
8025 *) Allow certificate extensions to be added to certificate requests. These
8026 are specified in a 'req_extensions' option of the req section of the
8027 config file. They can be printed out with the -text option to req but
8028 are otherwise ignored at present.
8031 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8032 data read consists of only the final block it would not decrypted because
8033 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8034 A misplaced 'break' also meant the decrypted final block might not be
8035 copied until the next read.
8038 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8039 a few extra parameters to the DH structure: these will be useful if
8040 for example we want the value of 'q' or implement X9.42 DH.
8043 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8044 provides hooks that allow the default DSA functions or functions on a
8045 "per key" basis to be replaced. This allows hardware acceleration and
8046 hardware key storage to be handled without major modification to the
8047 library. Also added low level modexp hooks and CRYPTO_EX structure and
8048 associated functions.
8051 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8052 as "read only": it can't be written to and the buffer it points to will
8053 not be freed. Reading from a read only BIO is much more efficient than
8054 a normal memory BIO. This was added because there are several times when
8055 an area of memory needs to be read from a BIO. The previous method was
8056 to create a memory BIO and write the data to it, this results in two
8057 copies of the data and an O(n^2) reading algorithm. There is a new
8058 function BIO_new_mem_buf() which creates a read only memory BIO from
8059 an area of memory. Also modified the PKCS#7 routines to use read only
8063 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8064 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8065 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8066 but a retry condition occured while trying to read the rest.
8069 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8070 NID_pkcs7_encrypted by default: this was wrong since this should almost
8071 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8072 the encrypted data type: this is a more sensible place to put it and it
8073 allows the PKCS#12 code to be tidied up that duplicated this
8077 *) Changed obj_dat.pl script so it takes its input and output files on
8078 the command line. This should avoid shell escape redirection problems
8082 *) Initial support for certificate extension requests, these are included
8083 in things like Xenroll certificate requests. Included functions to allow
8084 extensions to be obtained and added.
8087 *) -crlf option to s_client and s_server for sending newlines as
8088 CRLF (as required by many protocols).
8091 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8093 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8094 [Ralf S. Engelschall]
8096 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8097 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8099 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8103 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8104 DH parameters/keys (q is lost during that conversion, but the resulting
8105 DH parameters contain its length).
8107 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8108 much faster than DH_generate_parameters (which creates parameters
8109 where p = 2*q + 1), and also the smaller q makes DH computations
8110 much more efficient (160-bit exponentiation instead of 1024-bit
8111 exponentiation); so this provides a convenient way to support DHE
8112 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8113 utter importance to use
8114 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8116 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8117 when such DH parameters are used, because otherwise small subgroup
8118 attacks may become possible!
8121 *) Avoid memory leak in i2d_DHparams.
8124 *) Allow the -k option to be used more than once in the enc program:
8125 this allows the same encrypted message to be read by multiple recipients.
8128 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8129 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8130 it will always use the numerical form of the OID, even if it has a short
8134 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8135 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8136 otherwise bn_mod_exp was called. In the case of hardware keys for example
8137 no private key components need be present and it might store extra data
8138 in the RSA structure, which cannot be accessed from bn_mod_exp.
8139 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8140 private key operations.
8143 *) Added support for SPARC Linux.
8146 *) pem_password_cb function type incompatibly changed from
8147 typedef int pem_password_cb(char *buf, int size, int rwflag);
8149 ....(char *buf, int size, int rwflag, void *userdata);
8150 so that applications can pass data to their callbacks:
8151 The PEM[_ASN1]_{read,write}... functions and macros now take an
8152 additional void * argument, which is just handed through whenever
8153 the password callback is called.
8154 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8156 New function SSL_CTX_set_default_passwd_cb_userdata.
8158 Compatibility note: As many C implementations push function arguments
8159 onto the stack in reverse order, the new library version is likely to
8160 interoperate with programs that have been compiled with the old
8161 pem_password_cb definition (PEM_whatever takes some data that
8162 happens to be on the stack as its last argument, and the callback
8163 just ignores this garbage); but there is no guarantee whatsoever that
8166 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8167 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8168 problems not only on Windows, but also on some Unix platforms.
8169 To avoid problematic command lines, these definitions are now in an
8170 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8171 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8174 *) MIPS III/IV assembler module is reimplemented.
8177 *) More DES library cleanups: remove references to srand/rand and
8178 delete an unused file.
8181 *) Add support for the the free Netwide assembler (NASM) under Win32,
8182 since not many people have MASM (ml) and it can be hard to obtain.
8183 This is currently experimental but it seems to work OK and pass all
8184 the tests. Check out INSTALL.W32 for info.
8187 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8188 without temporary keys kept an extra copy of the server key,
8189 and connections with temporary keys did not free everything in case
8193 *) New function RSA_check_key and new openssl rsa option -check
8194 for verifying the consistency of RSA keys.
8195 [Ulf Moeller, Bodo Moeller]
8197 *) Various changes to make Win32 compile work:
8198 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8199 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8200 comparison" warnings.
8201 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8204 *) Add a debugging option to PKCS#5 v2 key generation function: when
8205 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8206 derived keys are printed to stderr.
8209 *) Copy the flags in ASN1_STRING_dup().
8210 [Roman E. Pavlov <pre@mo.msk.ru>]
8212 *) The x509 application mishandled signing requests containing DSA
8213 keys when the signing key was also DSA and the parameters didn't match.
8215 It was supposed to omit the parameters when they matched the signing key:
8216 the verifying software was then supposed to automatically use the CA's
8217 parameters if they were absent from the end user certificate.
8219 Omitting parameters is no longer recommended. The test was also
8220 the wrong way round! This was probably due to unusual behaviour in
8221 EVP_cmp_parameters() which returns 1 if the parameters match.
8222 This meant that parameters were omitted when they *didn't* match and
8223 the certificate was useless. Certificates signed with 'ca' didn't have
8225 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8227 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8228 The interface is as follows:
8229 Applications can use
8230 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8231 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8232 "off" is now the default.
8233 The library internally uses
8234 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8235 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8236 to disable memory-checking temporarily.
8238 Some inconsistent states that previously were possible (and were
8239 even the default) are now avoided.
8241 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8242 with each memory chunk allocated; this is occasionally more helpful
8243 than just having a counter.
8245 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8247 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8251 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8252 which largely parallels "options", but is for changing API behaviour,
8253 whereas "options" are about protocol behaviour.
8254 Initial "mode" flags are:
8256 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8257 a single record has been written.
8258 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8259 retries use the same buffer location.
8260 (But all of the contents must be
8264 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8267 *) Fix problems with no-hmac etc.
8268 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8270 *) New functions RSA_get_default_method(), RSA_set_method() and
8271 RSA_get_method(). These allows replacement of RSA_METHODs without having
8272 to mess around with the internals of an RSA structure.
8275 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8276 Also really enable memory leak checks in openssl.c and in some
8278 [Chad C. Mulligan, Bodo Moeller]
8280 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8281 up the length of negative integers. This has now been simplified to just
8282 store the length when it is first determined and use it later, rather
8283 than trying to keep track of where data is copied and updating it to
8285 [Steve Henson, reported by Brien Wheeler
8286 <bwheeler@authentica-security.com>]
8288 *) Add a new function PKCS7_signatureVerify. This allows the verification
8289 of a PKCS#7 signature but with the signing certificate passed to the
8290 function itself. This contrasts with PKCS7_dataVerify which assumes the
8291 certificate is present in the PKCS#7 structure. This isn't always the
8292 case: certificates can be omitted from a PKCS#7 structure and be
8293 distributed by "out of band" means (such as a certificate database).
8296 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8297 function prototypes in pem.h, also change util/mkdef.pl to add the
8298 necessary function names.
8301 *) mk1mf.pl (used by Windows builds) did not properly read the
8302 options set by Configure in the top level Makefile, and Configure
8303 was not even able to write more than one option correctly.
8304 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8307 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8308 file to be loaded from a BIO or FILE pointer. The BIO version will
8309 for example allow memory BIOs to contain config info.
8312 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8313 Whoever hopes to achieve shared-library compatibility across versions
8314 must use this, not the compile-time macro.
8315 (Exercise 0.9.4: Which is the minimum library version required by
8317 Note: All this applies only to multi-threaded programs, others don't
8321 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8322 through a BIO pair triggered the default case, i.e.
8323 SSLerr(...,SSL_R_UNKNOWN_STATE).
8326 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8327 can use the SSL library even if none of the specific BIOs is
8331 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8332 for the encoded length.
8333 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8335 *) Add initial documentation of the X509V3 functions.
8338 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8339 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8340 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8341 secure PKCS#8 private key format with a high iteration count.
8344 *) Fix determination of Perl interpreter: A perl or perl5
8345 _directory_ in $PATH was also accepted as the interpreter.
8346 [Ralf S. Engelschall]
8348 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8349 wrong with it but it was very old and did things like calling
8350 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8354 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8355 to use the new extension code.
8358 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8359 with macros. This should make it easier to change their form, add extra
8360 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8364 *) Add to configuration table a new entry that can specify an alternative
8365 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8366 according to Mark Crispin <MRC@Panda.COM>.
8370 *) DES CBC did not update the IV. Weird.
8373 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8374 Changing the behaviour of the former might break existing programs --
8375 where IV updating is needed, des_ncbc_encrypt can be used.
8378 *) When bntest is run from "make test" it drives bc to check its
8379 calculations, as well as internally checking them. If an internal check
8380 fails, it needs to cause bc to give a non-zero result or make test carries
8381 on without noticing the failure. Fixed.
8384 *) DES library cleanups.
8387 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8388 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8389 ciphers. NOTE: although the key derivation function has been verified
8390 against some published test vectors it has not been extensively tested
8391 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8395 *) Instead of "mkdir -p", which is not fully portable, use new
8396 Perl script "util/mkdir-p.pl".
8399 *) Rewrite the way password based encryption (PBE) is handled. It used to
8400 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8401 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8402 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8403 the 'parameter' field of the AlgorithmIdentifier is passed to the
8404 underlying key generation function so it must do its own ASN1 parsing.
8405 This has also changed the EVP_PBE_CipherInit() function which now has a
8406 'parameter' argument instead of literal salt and iteration count values
8407 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8410 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8411 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8412 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8413 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8414 value was just used as a "magic string" and not used directly its
8415 value doesn't matter.
8418 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8422 *) "linux-sparc64" configuration (ultrapenguin).
8423 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8424 "linux-sparc" configuration.
8425 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8427 *) config now generates no-xxx options for missing ciphers.
8430 *) Support the EBCDIC character set (work in progress).
8431 File ebcdic.c not yet included because it has a different license.
8432 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8434 *) Support BS2000/OSD-POSIX.
8435 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8437 *) Make callbacks for key generation use void * instead of char *.
8440 *) Make S/MIME samples compile (not yet tested).
8443 *) Additional typesafe stacks.
8446 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8450 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8452 *) New configuration variant "sco5-gcc".
8454 *) Updated some demos.
8455 [Sean O Riordain, Wade Scholine]
8457 *) Add missing BIO_free at exit of pkcs12 application.
8460 *) Fix memory leak in conf.c.
8463 *) Updates for Win32 to assembler version of MD5.
8466 *) Set #! path to perl in apps/der_chop to where we found it
8467 instead of using a fixed path.
8470 *) SHA library changes for irix64-mips4-cc.
8473 *) Improvements for VMS support.
8477 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8479 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8480 This also avoids the problems with SC4.2 and unpatched SC5.
8481 [Andy Polyakov <appro@fy.chalmers.se>]
8483 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
8484 These are required because of the typesafe stack would otherwise break
8485 existing code. If old code used a structure member which used to be STACK
8486 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
8487 sk_num or sk_value it would produce an error because the num, data members
8488 are not present in STACK_OF. Now it just produces a warning. sk_set
8489 replaces the old method of assigning a value to sk_value
8490 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
8491 that does this will no longer work (and should use sk_set instead) but
8492 this could be regarded as a "questionable" behaviour anyway.
8495 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
8496 correctly handle encrypted S/MIME data.
8499 *) Change type of various DES function arguments from des_cblock
8500 (which means, in function argument declarations, pointer to char)
8501 to des_cblock * (meaning pointer to array with 8 char elements),
8502 which allows the compiler to do more typechecking; it was like
8503 that back in SSLeay, but with lots of ugly casts.
8505 Introduce new type const_des_cblock.
8508 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
8509 problems: find RecipientInfo structure that matches recipient certificate
8510 and initialise the ASN1 structures properly based on passed cipher.
8513 *) Belatedly make the BN tests actually check the results.
8516 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
8517 to and from BNs: it was completely broken. New compilation option
8518 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
8519 key elements as negative integers.
8522 *) Reorganize and speed up MD5.
8523 [Andy Polyakov <appro@fy.chalmers.se>]
8526 [Richard Levitte <richard@levitte.org>]
8528 *) New option -out to asn1parse to allow the parsed structure to be
8529 output to a file. This is most useful when combined with the -strparse
8530 option to examine the output of things like OCTET STRINGS.
8533 *) Make SSL library a little more fool-proof by not requiring any longer
8534 that SSL_set_{accept,connect}_state be called before
8535 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
8536 in many applications because usually everything *appeared* to work as
8537 intended anyway -- now it really works as intended).
8540 *) Move openssl.cnf out of lib/.
8543 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
8544 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
8545 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
8546 [Ralf S. Engelschall]
8548 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
8549 handle PKCS#7 enveloped data properly.
8550 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
8552 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
8553 copying pointers. The cert_st handling is changed by this in
8554 various ways (and thus what used to be known as ctx->default_cert
8555 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
8556 any longer when s->cert does not give us what we need).
8557 ssl_cert_instantiate becomes obsolete by this change.
8558 As soon as we've got the new code right (possibly it already is?),
8559 we have solved a couple of bugs of the earlier code where s->cert
8560 was used as if it could not have been shared with other SSL structures.
8562 Note that using the SSL API in certain dirty ways now will result
8563 in different behaviour than observed with earlier library versions:
8564 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
8565 does not influence s as it used to.
8567 In order to clean up things more thoroughly, inside SSL_SESSION
8568 we don't use CERT any longer, but a new structure SESS_CERT
8569 that holds per-session data (if available); currently, this is
8570 the peer's certificate chain and, for clients, the server's certificate
8571 and temporary key. CERT holds only those values that can have
8572 meaningful defaults in an SSL_CTX.
8575 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
8576 from the internal representation. Various PKCS#7 fixes: remove some
8577 evil casts and set the enc_dig_alg field properly based on the signing
8581 *) Allow PKCS#12 password to be set from the command line or the
8582 environment. Let 'ca' get its config file name from the environment
8583 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
8587 *) Allow certificate policies extension to use an IA5STRING for the
8588 organization field. This is contrary to the PKIX definition but
8589 VeriSign uses it and IE5 only recognises this form. Document 'x509'
8593 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
8594 without disallowing inline assembler and the like for non-pedantic builds.
8597 *) Support Borland C++ builder.
8598 [Janez Jere <jj@void.si>, modified by Ulf Möller]
8603 *) SHA-1 cleanups and performance enhancements.
8604 [Andy Polyakov <appro@fy.chalmers.se>]
8606 *) Sparc v8plus assembler for the bignum library.
8607 [Andy Polyakov <appro@fy.chalmers.se>]
8609 *) Accept any -xxx and +xxx compiler options in Configure.
8612 *) Update HPUX configuration.
8615 *) Add missing sk_<type>_unshift() function to safestack.h
8616 [Ralf S. Engelschall]
8618 *) New function SSL_CTX_use_certificate_chain_file that sets the
8619 "extra_cert"s in addition to the certificate. (This makes sense
8620 only for "PEM" format files, as chains as a whole are not
8624 *) Support verify_depth from the SSL API.
8625 x509_vfy.c had what can be considered an off-by-one-error:
8626 Its depth (which was not part of the external interface)
8627 was actually counting the number of certificates in a chain;
8628 now it really counts the depth.
8631 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
8632 instead of X509err, which often resulted in confusing error
8633 messages since the error codes are not globally unique
8634 (e.g. an alleged error in ssl3_accept when a certificate
8635 didn't match the private key).
8637 *) New function SSL_CTX_set_session_id_context that allows to set a default
8638 value (so that you don't need SSL_set_session_id_context for each
8639 connection using the SSL_CTX).
8642 *) OAEP decoding bug fix.
8645 *) Support INSTALL_PREFIX for package builders, as proposed by
8649 *) New Configure options "threads" and "no-threads". For systems
8650 where the proper compiler options are known (currently Solaris
8651 and Linux), "threads" is the default.
8654 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
8657 *) Install various scripts to $(OPENSSLDIR)/misc, not to
8658 $(INSTALLTOP)/bin -- they shouldn't clutter directories
8659 such as /usr/local/bin.
8662 *) "make linux-shared" to build shared libraries.
8663 [Niels Poppe <niels@netbox.org>]
8665 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
8668 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
8669 extension adding in x509 utility.
8672 *) Remove NOPROTO sections and error code comments.
8675 *) Partial rewrite of the DEF file generator to now parse the ANSI
8679 *) New Configure options --prefix=DIR and --openssldir=DIR.
8682 *) Complete rewrite of the error code script(s). It is all now handled
8683 by one script at the top level which handles error code gathering,
8684 header rewriting and C source file generation. It should be much better
8685 than the old method: it now uses a modified version of Ulf's parser to
8686 read the ANSI prototypes in all header files (thus the old K&R definitions
8687 aren't needed for error creation any more) and do a better job of
8688 translating function codes into names. The old 'ASN1 error code imbedded
8689 in a comment' is no longer necessary and it doesn't use .err files which
8690 have now been deleted. Also the error code call doesn't have to appear all
8691 on one line (which resulted in some large lines...).
8694 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
8697 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
8698 0 (which usually indicates a closed connection), but continue reading.
8701 *) Fix some race conditions.
8704 *) Add support for CRL distribution points extension. Add Certificate
8705 Policies and CRL distribution points documentation.
8708 *) Move the autogenerated header file parts to crypto/opensslconf.h.
8711 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
8712 8 of keying material. Merlin has also confirmed interop with this fix
8713 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
8714 [Merlin Hughes <merlin@baltimore.ie>]
8716 *) Fix lots of warnings.
8717 [Richard Levitte <levitte@stacken.kth.se>]
8719 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
8720 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
8721 [Richard Levitte <levitte@stacken.kth.se>]
8723 *) Fix problems with sizeof(long) == 8.
8724 [Andy Polyakov <appro@fy.chalmers.se>]
8726 *) Change functions to ANSI C.
8729 *) Fix typos in error codes.
8730 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
8732 *) Remove defunct assembler files from Configure.
8735 *) SPARC v8 assembler BIGNUM implementation.
8736 [Andy Polyakov <appro@fy.chalmers.se>]
8738 *) Support for Certificate Policies extension: both print and set.
8739 Various additions to support the r2i method this uses.
8742 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
8743 return a const string when you are expecting an allocated buffer.
8746 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
8747 types DirectoryString and DisplayText.
8750 *) Add code to allow r2i extensions to access the configuration database,
8751 add an LHASH database driver and add several ctx helper functions.
8754 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8755 fail when they extended the size of a BIGNUM.
8758 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8759 support typesafe stack.
8762 *) Fix typo in SSL_[gs]et_options().
8763 [Nils Frostberg <nils@medcom.se>]
8765 *) Delete various functions and files that belonged to the (now obsolete)
8766 old X509V3 handling code.
8769 *) New Configure option "rsaref".
8772 *) Don't auto-generate pem.h.
8775 *) Introduce type-safe ASN.1 SETs.
8778 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8779 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8781 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8782 that links with OpenSSL (well at least cause lots of warnings), but fear
8783 not: the conversion is trivial, and it eliminates loads of evil casts. A
8784 few STACKed things have been converted already. Feel free to convert more.
8785 In the fullness of time, I'll do away with the STACK type altogether.
8788 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8789 specified in <certfile> by updating the entry in the index.txt file.
8790 This way one no longer has to edit the index.txt file manually for
8791 revoking a certificate. The -revoke option does the gory details now.
8792 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8794 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8795 `-text' option at all and this way the `-noout -text' combination was
8796 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8797 [Ralf S. Engelschall]
8799 *) Make sure a corresponding plain text error message exists for the
8800 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8801 verify callback function determined that a certificate was revoked.
8802 [Ralf S. Engelschall]
8804 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8805 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8806 all available cipers including rc5, which was forgotten until now.
8807 In order to let the testing shell script know which algorithms
8808 are available, a new (up to now undocumented) command
8809 "openssl list-cipher-commands" is used.
8812 *) Bugfix: s_client occasionally would sleep in select() when
8813 it should have checked SSL_pending() first.
8816 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8817 the raw DSA values prior to ASN.1 encoding.
8820 *) Tweaks to Configure
8821 [Niels Poppe <niels@netbox.org>]
8823 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8827 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8830 *) New config option to avoid instructions that are illegal on the 80386.
8831 The default code is faster, but requires at least a 486.
8834 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8835 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8836 same as SSL2_VERSION anyway.
8839 *) New "-showcerts" option for s_client.
8842 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8843 application. Various cleanups and fixes.
8846 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8847 modify error routines to work internally. Add error codes and PBE init
8848 to library startup routines.
8851 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8852 packing functions to asn1 and evp. Changed function names and error
8853 codes along the way.
8856 *) PKCS12 integration: and so it begins... First of several patches to
8857 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8858 objects to objects.h
8861 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8862 and display support for Thawte strong extranet extension.
8865 *) Add LinuxPPC support.
8866 [Jeff Dubrule <igor@pobox.org>]
8868 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8869 bn_div_words in alpha.s.
8870 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8872 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8873 OAEP isn't supported when OpenSSL is built with RSAref.
8874 [Ulf Moeller <ulf@fitug.de>]
8876 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8877 so they no longer are missing under -DNOPROTO.
8878 [Soren S. Jorvang <soren@t.dk>]
8881 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8883 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8884 doesn't work when the session is reused. Coming soon!
8887 *) Fix a security hole, that allows sessions to be reused in the wrong
8888 context thus bypassing client cert protection! All software that uses
8889 client certs and session caches in multiple contexts NEEDS PATCHING to
8890 allow session reuse! A fuller solution is in the works.
8891 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8893 *) Some more source tree cleanups (removed obsolete files
8894 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8895 permission on "config" script to be executable) and a fix for the INSTALL
8897 [Ulf Moeller <ulf@fitug.de>]
8899 *) Remove some legacy and erroneous uses of malloc, free instead of
8901 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8903 *) Make rsa_oaep_test return non-zero on error.
8904 [Ulf Moeller <ulf@fitug.de>]
8906 *) Add support for native Solaris shared libraries. Configure
8907 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8908 if someone would make that last step automatic.
8909 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8911 *) ctx_size was not built with the right compiler during "make links". Fixed.
8914 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8915 except NULL ciphers". This means the default cipher list will no longer
8916 enable NULL ciphers. They need to be specifically enabled e.g. with
8917 the string "DEFAULT:eNULL".
8920 *) Fix to RSA private encryption routines: if p < q then it would
8921 occasionally produce an invalid result. This will only happen with
8922 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8925 *) Be less restrictive and allow also `perl util/perlpath.pl
8926 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8927 because this way one can also use an interpreter named `perl5' (which is
8928 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8929 installed as `perl').
8930 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8932 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8933 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8935 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8936 advapi32.lib to Win32 build and change the pem test comparision
8937 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8938 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8939 and crypto/des/ede_cbcm_enc.c.
8942 *) DES quad checksum was broken on big-endian architectures. Fixed.
8945 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8946 Win32 test batch file so it (might) work again. The Win32 test batch file
8947 is horrible: I feel ill....
8950 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8951 in e_os.h. Audit of header files to check ANSI and non ANSI
8952 sections: 10 functions were absent from non ANSI section and not exported
8953 from Windows DLLs. Fixed up libeay.num for new functions.
8956 *) Make `openssl version' output lines consistent.
8957 [Ralf S. Engelschall]
8959 *) Fix Win32 symbol export lists for BIO functions: Added
8960 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8961 to ms/libeay{16,32}.def.
8962 [Ralf S. Engelschall]
8964 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8965 fine under Unix and passes some trivial tests I've now added. But the
8966 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8967 added to make sure no one expects that this stuff really works in the
8968 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8969 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8971 [Ralf S. Engelschall]
8973 *) Fix the generation of two part addresses in perl.
8974 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8976 *) Add config entry for Linux on MIPS.
8977 [John Tobey <jtobey@channel1.com>]
8979 *) Make links whenever Configure is run, unless we are on Windoze.
8982 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8983 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8987 *) Add a useful kludge to allow package maintainers to specify compiler and
8988 other platforms details on the command line without having to patch the
8989 Configure script everytime: One now can use ``perl Configure
8990 <id>:<details>'', i.e. platform ids are allowed to have details appended
8991 to them (seperated by colons). This is treated as there would be a static
8992 pre-configured entry in Configure's %table under key <id> with value
8993 <details> and ``perl Configure <id>'' is called. So, when you want to
8994 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8995 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8996 now, which overrides the FreeBSD-elf entry on-the-fly.
8997 [Ralf S. Engelschall]
8999 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9002 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9003 on the `perl Configure ...' command line. This way one can compile
9004 OpenSSL libraries with Position Independent Code (PIC) which is needed
9005 for linking it into DSOs.
9006 [Ralf S. Engelschall]
9008 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9012 *) Cleaned up the LICENSE document: The official contact for any license
9013 questions now is the OpenSSL core team under openssl-core@openssl.org.
9014 And add a paragraph about the dual-license situation to make sure people
9015 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9016 to the OpenSSL toolkit.
9017 [Ralf S. Engelschall]
9019 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9020 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9021 Additonally cleaned up the `make links' target: Remove unnecessary
9022 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9023 to speed processing and no longer clutter the display with confusing
9024 stuff. Instead only the actually done links are displayed.
9025 [Ralf S. Engelschall]
9027 *) Permit null encryption ciphersuites, used for authentication only. It used
9028 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9029 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9033 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9034 signed attributes when verifying signatures (this would break them),
9035 the detached data encoding was wrong and public keys obtained using
9036 X509_get_pubkey() weren't freed.
9039 *) Add text documentation for the BUFFER functions. Also added a work around
9040 to a Win95 console bug. This was triggered by the password read stuff: the
9041 last character typed gets carried over to the next fread(). If you were
9042 generating a new cert request using 'req' for example then the last
9043 character of the passphrase would be CR which would then enter the first
9047 *) Added the new `Includes OpenSSL Cryptography Software' button as
9048 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9049 button and can be used by applications based on OpenSSL to show the
9050 relationship to the OpenSSL project.
9051 [Ralf S. Engelschall]
9053 *) Remove confusing variables in function signatures in files
9054 ssl/ssl_lib.c and ssl/ssl.h.
9055 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9057 *) Don't install bss_file.c under PREFIX/include/
9058 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9060 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9061 functions that return function pointers and has support for NT specific
9062 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9063 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9064 unsigned to signed types: this was killing the Win32 compile.
9067 *) Add new certificate file to stack functions,
9068 SSL_add_dir_cert_subjects_to_stack() and
9069 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9070 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9071 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9072 This means that Apache-SSL and similar packages don't have to mess around
9073 to add as many CAs as they want to the preferred list.
9076 *) Experiment with doxygen documentation. Currently only partially applied to
9078 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9079 openssl.doxy as the configuration file.
9082 *) Get rid of remaining C++-style comments which strict C compilers hate.
9083 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9085 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9086 compiled in by default: it has problems with large keys.
9089 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9090 DH private keys and/or callback functions which directly correspond to
9091 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9092 is needed for applications which have to configure certificates on a
9093 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9095 For the RSA certificate situation is makes no difference, but
9096 for the DSA certificate situation this fixes the "no shared cipher"
9097 problem where the OpenSSL cipher selection procedure failed because the
9098 temporary keys were not overtaken from the context and the API provided
9099 no way to reconfigure them.
9100 The new functions now let applications reconfigure the stuff and they
9101 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9102 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9103 non-public-API function ssl_cert_instantiate() is used as a helper
9104 function and also to reduce code redundancy inside ssl_rsa.c.
9105 [Ralf S. Engelschall]
9107 *) Move s_server -dcert and -dkey options out of the undocumented feature
9108 area because they are useful for the DSA situation and should be
9109 recognized by the users.
9110 [Ralf S. Engelschall]
9112 *) Fix the cipher decision scheme for export ciphers: the export bits are
9113 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9114 SSL_EXP_MASK. So, the original variable has to be used instead of the
9115 already masked variable.
9116 [Richard Levitte <levitte@stacken.kth.se>]
9118 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9119 [Richard Levitte <levitte@stacken.kth.se>]
9121 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9122 from `int' to `unsigned int' because it's a length and initialized by
9123 EVP_DigestFinal() which expects an `unsigned int *'.
9124 [Richard Levitte <levitte@stacken.kth.se>]
9126 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9127 script. Instead use the usual Shell->Perl transition trick.
9128 [Ralf S. Engelschall]
9130 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9131 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9132 -noout -modulus' as it's already the case for `openssl rsa -noout
9133 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9134 currently the public key is printed (a decision which was already done by
9135 `openssl dsa -modulus' in the past) which serves a similar purpose.
9136 Additionally the NO_RSA no longer completely removes the whole -modulus
9137 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9139 [Ralf S. Engelschall]
9141 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9142 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9143 [Arne Ansper <arne@ats.cyber.ee>]
9145 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9146 to be added. Now both 'req' and 'ca' can use new objects defined in the
9150 *) Add cool BIO that does syslog (or event log on NT).
9151 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9153 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9154 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9155 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9156 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9159 *) Add preliminary config info for new extension code.
9162 *) Make RSA_NO_PADDING really use no padding.
9163 [Ulf Moeller <ulf@fitug.de>]
9165 *) Generate errors when private/public key check is done.
9168 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9169 for some CRL extensions and new objects added.
9172 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9173 key usage extension and fuller support for authority key id.
9176 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9177 padding method for RSA, which is recommended for new applications in PKCS
9178 #1 v2.0 (RFC 2437, October 1998).
9179 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9180 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9181 against Bleichbacher's attack on RSA.
9182 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9185 *) Updates to the new SSL compression code
9186 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9188 *) Fix so that the version number in the master secret, when passed
9189 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9190 (because the server will not accept higher), that the version number
9191 is 0x03,0x01, not 0x03,0x00
9192 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9194 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9195 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9196 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9199 *) Support for RAW extensions where an arbitrary extension can be
9200 created by including its DER encoding. See apps/openssl.cnf for
9204 *) Make sure latest Perl versions don't interpret some generated C array
9205 code as Perl array code in the crypto/err/err_genc.pl script.
9206 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9208 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9209 not many people have the assembler. Various Win32 compilation fixes and
9210 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9214 *) Modify configure script 'Configure' to automatically create crypto/date.h
9215 file under Win32 and also build pem.h from pem.org. New script
9216 util/mkfiles.pl to create the MINFO file on environments that can't do a
9217 'make files': perl util/mkfiles.pl >MINFO should work.
9220 *) Major rework of DES function declarations, in the pursuit of correctness
9221 and purity. As a result, many evil casts evaporated, and some weirdness,
9222 too. You may find this causes warnings in your code. Zapping your evil
9223 casts will probably fix them. Mostly.
9226 *) Fix for a typo in asn1.h. Bug fix to object creation script
9227 obj_dat.pl. It considered a zero in an object definition to mean
9228 "end of object": none of the objects in objects.h have any zeros
9229 so it wasn't spotted.
9230 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9232 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9233 Masking (CBCM). In the absence of test vectors, the best I have been able
9234 to do is check that the decrypt undoes the encrypt, so far. Send me test
9235 vectors if you have them.
9238 *) Correct calculation of key length for export ciphers (too much space was
9239 allocated for null ciphers). This has not been tested!
9242 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9243 message is now correct (it understands "crypto" and "ssl" on its
9244 command line). There is also now an "update" option. This will update
9245 the util/ssleay.num and util/libeay.num files with any new functions.
9247 perl util/mkdef.pl crypto ssl update
9248 it will update them.
9251 *) Overhauled the Perl interface (perl/*):
9252 - ported BN stuff to OpenSSL's different BN library
9253 - made the perl/ source tree CVS-aware
9254 - renamed the package from SSLeay to OpenSSL (the files still contain
9255 their history because I've copied them in the repository)
9256 - removed obsolete files (the test scripts will be replaced
9257 by better Test::Harness variants in the future)
9258 [Ralf S. Engelschall]
9260 *) First cut for a very conservative source tree cleanup:
9261 1. merge various obsolete readme texts into doc/ssleay.txt
9262 where we collect the old documents and readme texts.
9263 2. remove the first part of files where I'm already sure that we no
9264 longer need them because of three reasons: either they are just temporary
9265 files which were left by Eric or they are preserved original files where
9266 I've verified that the diff is also available in the CVS via "cvs diff
9267 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9268 the crypto/md/ stuff).
9269 [Ralf S. Engelschall]
9271 *) More extension code. Incomplete support for subject and issuer alt
9272 name, issuer and authority key id. Change the i2v function parameters
9273 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9274 what that's for :-) Fix to ASN1 macro which messed up
9275 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9278 *) Preliminary support for ENUMERATED type. This is largely copied from the
9282 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9283 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9285 *) Make sure `make rehash' target really finds the `openssl' program.
9286 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9288 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9289 like to hear about it if this slows down other processors.
9292 *) Add CygWin32 platform information to Configure script.
9293 [Alan Batie <batie@aahz.jf.intel.com>]
9295 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9296 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9298 *) New program nseq to manipulate netscape certificate sequences
9301 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9305 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9306 but the BN code had some problems that would cause failures when
9307 doing certificate verification and some other functions.
9308 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9310 *) Add ASN1 and PEM code to support netscape certificate sequences.
9313 *) Add ASN1 and PEM code to support netscape certificate sequences.
9316 *) Add several PKIX and private extended key usage OIDs.
9319 *) Modify the 'ca' program to handle the new extension code. Modify
9320 openssl.cnf for new extension format, add comments.
9323 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9324 and add a sample to openssl.cnf so req -x509 now adds appropriate
9328 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9329 error code, add initial support to X509_print() and x509 application.
9332 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9333 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9334 stuff is currently isolated and isn't even compiled yet.
9337 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9338 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9339 Removed the versions check from X509 routines when loading extensions:
9340 this allows certain broken certificates that don't set the version
9341 properly to be processed.
9344 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9345 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9346 can still be regenerated with "make depend".
9349 *) Spelling mistake in C version of CAST-128.
9350 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9352 *) Changes to the error generation code. The perl script err-code.pl
9353 now reads in the old error codes and retains the old numbers, only
9354 adding new ones if necessary. It also only changes the .err files if new
9355 codes are added. The makefiles have been modified to only insert errors
9356 when needed (to avoid needlessly modifying header files). This is done
9357 by only inserting errors if the .err file is newer than the auto generated
9358 C file. To rebuild all the error codes from scratch (the old behaviour)
9359 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9360 or delete all the .err files.
9363 *) CAST-128 was incorrectly implemented for short keys. The C version has
9364 been fixed, but is untested. The assembler versions are also fixed, but
9365 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9366 to regenerate it if needed.
9367 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9368 Hagino <itojun@kame.net>]
9370 *) File was opened incorrectly in randfile.c.
9371 [Ulf Möller <ulf@fitug.de>]
9373 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9374 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9375 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9376 al: it's just almost always a UTCTime. Note this patch adds new error
9377 codes so do a "make errors" if there are problems.
9380 *) Correct Linux 1 recognition in config.
9381 [Ulf Möller <ulf@fitug.de>]
9383 *) Remove pointless MD5 hash when using DSA keys in ca.
9384 [Anonymous <nobody@replay.com>]
9386 *) Generate an error if given an empty string as a cert directory. Also
9387 generate an error if handed NULL (previously returned 0 to indicate an
9388 error, but didn't set one).
9389 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9391 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9394 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9395 parameters. This was causing a warning which killed off the Win32 compile.
9398 *) Remove C++ style comments from crypto/bn/bn_local.h.
9399 [Neil Costigan <neil.costigan@celocom.com>]
9401 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9402 based on a text string, looking up short and long names and finally
9403 "dot" format. The "dot" format stuff didn't work. Added new function
9404 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9405 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9406 OID is not part of the table.
9409 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9410 X509_LOOKUP_by_alias().
9413 *) Sort openssl functions by name.
9416 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9417 encryption from sample DSA keys (in case anyone is interested the password
9421 *) Make _all_ *_free functions accept a NULL pointer.
9422 [Frans Heymans <fheymans@isaserver.be>]
9424 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9426 [Anonymous <nobody@replay.com>]
9428 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9429 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9431 *) Don't blow it for numeric -newkey arguments to apps/req.
9432 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9434 *) Temp key "for export" tests were wrong in s3_srvr.c.
9435 [Anonymous <nobody@replay.com>]
9437 *) Add prototype for temp key callback functions
9438 SSL_CTX_set_tmp_{rsa,dh}_callback().
9441 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9442 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9445 *) X509_name_add_entry() freed the wrong thing after an error.
9446 [Arne Ansper <arne@ats.cyber.ee>]
9448 *) rsa_eay.c would attempt to free a NULL context.
9449 [Arne Ansper <arne@ats.cyber.ee>]
9451 *) BIO_s_socket() had a broken should_retry() on Windoze.
9452 [Arne Ansper <arne@ats.cyber.ee>]
9454 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9455 [Arne Ansper <arne@ats.cyber.ee>]
9457 *) Make sure the already existing X509_STORE->depth variable is initialized
9458 in X509_STORE_new(), but document the fact that this variable is still
9459 unused in the certificate verification process.
9460 [Ralf S. Engelschall]
9462 *) Fix the various library and apps files to free up pkeys obtained from
9463 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9466 *) Fix reference counting in X509_PUBKEY_get(). This makes
9467 demos/maurice/example2.c work, amongst others, probably.
9468 [Steve Henson and Ben Laurie]
9470 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9471 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9472 are no longer created. This way we have a single and consistent command
9473 line interface `openssl <command>', similar to `cvs <command>'.
9474 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9476 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9477 BIT STRING wrapper always have zero unused bits.
9480 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
9483 *) Make the top-level INSTALL documentation easier to understand.
9486 *) Makefiles updated to exit if an error occurs in a sub-directory
9487 make (including if user presses ^C) [Paul Sutton]
9489 *) Make Montgomery context stuff explicit in RSA data structure.
9492 *) Fix build order of pem and err to allow for generated pem.h.
9495 *) Fix renumbering bug in X509_NAME_delete_entry().
9498 *) Enhanced the err-ins.pl script so it makes the error library number
9499 global and can add a library name. This is needed for external ASN1 and
9500 other error libraries.
9503 *) Fixed sk_insert which never worked properly.
9506 *) Fix ASN1 macros so they can handle indefinite length construted
9507 EXPLICIT tags. Some non standard certificates use these: they can now
9511 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
9512 into a single doc/ssleay.txt bundle. This way the information is still
9513 preserved but no longer messes up this directory. Now it's new room for
9514 the new set of documenation files.
9515 [Ralf S. Engelschall]
9517 *) SETs were incorrectly DER encoded. This was a major pain, because they
9518 shared code with SEQUENCEs, which aren't coded the same. This means that
9519 almost everything to do with SETs or SEQUENCEs has either changed name or
9520 number of arguments.
9521 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
9523 *) Fix test data to work with the above.
9526 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
9527 was already fixed by Eric for 0.9.1 it seems.
9528 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
9530 *) Autodetect FreeBSD3.
9533 *) Fix various bugs in Configure. This affects the following platforms:
9537 unixware-2.0-pentium
9541 *) Eliminate generated files from CVS. Reorder tests to regenerate files
9542 before they are needed.
9545 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
9549 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
9551 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
9552 changed SSLeay to OpenSSL in version strings.
9553 [Ralf S. Engelschall]
9555 *) Some fixups to the top-level documents.
9558 *) Fixed the nasty bug where rsaref.h was not found under compile-time
9559 because the symlink to include/ was missing.
9560 [Ralf S. Engelschall]
9562 *) Incorporated the popular no-RSA/DSA-only patches
9563 which allow to compile a RSA-free SSLeay.
9564 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
9566 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
9567 when "ssleay" is still not found.
9568 [Ralf S. Engelschall]
9570 *) Added more platforms to Configure: Cray T3E, HPUX 11,
9571 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
9573 *) Updated the README file.
9574 [Ralf S. Engelschall]
9576 *) Added various .cvsignore files in the CVS repository subdirs
9577 to make a "cvs update" really silent.
9578 [Ralf S. Engelschall]
9580 *) Recompiled the error-definition header files and added
9581 missing symbols to the Win32 linker tables.
9582 [Ralf S. Engelschall]
9584 *) Cleaned up the top-level documents;
9585 o new files: CHANGES and LICENSE
9586 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
9587 o merged COPYRIGHT into LICENSE
9588 o removed obsolete TODO file
9589 o renamed MICROSOFT to INSTALL.W32
9590 [Ralf S. Engelschall]
9592 *) Removed dummy files from the 0.9.1b source tree:
9593 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
9594 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
9595 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
9596 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
9597 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
9598 [Ralf S. Engelschall]
9600 *) Added various platform portability fixes.
9603 *) The Genesis of the OpenSSL rpject:
9604 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
9605 Young and Tim J. Hudson created while they were working for C2Net until
9607 [The OpenSSL Project]
9610 Changes between 0.9.0b and 0.9.1b [not released]
9612 *) Updated a few CA certificates under certs/
9615 *) Changed some BIGNUM api stuff.
9618 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
9619 DGUX x86, Linux Alpha, etc.
9622 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
9623 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
9627 *) Add -strparse option to asn1pars program which parses nested
9629 [Dr Stephen Henson <shenson@bigfoot.com>]
9631 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
9634 *) DSA fix for "ca" program.
9637 *) Added "-genkey" option to "dsaparam" program.
9640 *) Added RIPE MD160 (rmd160) message digest.
9643 *) Added -a (all) option to "ssleay version" command.
9646 *) Added PLATFORM define which is the id given to Configure.
9649 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
9652 *) Extended the ASN.1 parser routines.
9655 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
9658 *) Added a BN_CTX to the BN library.
9661 *) Fixed the weak key values in DES library
9664 *) Changed API in EVP library for cipher aliases.
9667 *) Added support for RC2/64bit cipher.
9670 *) Converted the lhash library to the crypto/mem.c functions.
9673 *) Added more recognized ASN.1 object ids.
9676 *) Added more RSA padding checks for SSL/TLS.
9679 *) Added BIO proxy/filter functionality.
9682 *) Added extra_certs to SSL_CTX which can be used
9683 send extra CA certificates to the client in the CA cert chain sending
9684 process. It can be configured with SSL_CTX_add_extra_chain_cert().
9687 *) Now Fortezza is denied in the authentication phase because
9688 this is key exchange mechanism is not supported by SSLeay at all.
9691 *) Additional PKCS1 checks.
9694 *) Support the string "TLSv1" for all TLS v1 ciphers.
9697 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
9698 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
9701 *) Fixed a few memory leaks.
9704 *) Fixed various code and comment typos.
9707 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
9708 bytes sent in the client random.
9709 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob