5 Changes between 0.9.8zd and 0.9.8ze [xx XXX xxxx]
7 *) Build fixes for the Windows and OpenVMS platforms
8 [Matt Caswell and Richard Levitte]
10 Changes between 0.9.8zc and 0.9.8zd [8 Jan 2015]
12 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
13 message can cause a segmentation fault in OpenSSL due to a NULL pointer
14 dereference. This could lead to a Denial Of Service attack. Thanks to
15 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
19 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
20 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
21 method would be set to NULL which could later result in a NULL pointer
22 dereference. Thanks to Frank Schmirler for reporting this issue.
26 *) Abort handshake if server key exchange message is omitted for ephemeral
29 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
34 *) Remove non-export ephemeral RSA code on client and server. This code
35 violated the TLS standard by allowing the use of temporary RSA keys in
36 non-export ciphersuites and could be used by a server to effectively
37 downgrade the RSA key length used to a value smaller than the server
38 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
39 INRIA or reporting this issue.
43 *) Fix various certificate fingerprint issues.
45 By using non-DER or invalid encodings outside the signed portion of a
46 certificate the fingerprint can be changed without breaking the signature.
47 Although no details of the signed portion of the certificate can be changed
48 this can cause problems with some applications: e.g. those using the
49 certificate fingerprint for blacklists.
51 1. Reject signatures with non zero unused bits.
53 If the BIT STRING containing the signature has non zero unused bits reject
54 the signature. All current signature algorithms require zero unused bits.
56 2. Check certificate algorithm consistency.
58 Check the AlgorithmIdentifier inside TBS matches the one in the
59 certificate signature. NB: this will result in signature failure
60 errors for some broken certificates.
62 Thanks to Konrad Kraszewski from Google for reporting this issue.
64 3. Check DSA/ECDSA signatures use DER.
66 Reencode DSA/ECDSA signatures and compare with the original received
67 signature. Return an error if there is a mismatch.
69 This will reject various cases including garbage after signature
70 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
71 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
72 (negative or with leading zeroes).
74 Further analysis was conducted and fixes were developed by Stephen Henson
75 of the OpenSSL core team.
80 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
81 results on some platforms, including x86_64. This bug occurs at random
82 with a very low probability, and is not known to be exploitable in any
83 way, though its exact impact is difficult to determine. Thanks to Pieter
84 Wuille (Blockstream) who reported this issue and also suggested an initial
85 fix. Further analysis was conducted by the OpenSSL development team and
86 Adam Langley of Google. The final fix was developed by Andy Polyakov of
87 the OpenSSL core team.
91 Changes between 0.9.8zb and 0.9.8zc [15 Oct 2014]
93 *) Session Ticket Memory Leak.
95 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
96 integrity of that ticket is first verified. In the event of a session
97 ticket integrity check failing, OpenSSL will fail to free memory
98 causing a memory leak. By sending a large number of invalid session
99 tickets an attacker could exploit this issue in a Denial Of Service
104 *) Build option no-ssl3 is incomplete.
106 When OpenSSL is configured with "no-ssl3" as a build option, servers
107 could accept and complete a SSL 3.0 handshake, and clients could be
108 configured to send them.
110 [Akamai and the OpenSSL team]
112 *) Add support for TLS_FALLBACK_SCSV.
113 Client applications doing fallback retries should call
114 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
116 [Adam Langley, Bodo Moeller]
118 *) Add additional DigestInfo checks.
120 Reencode DigestInto in DER and check against the original when
121 verifying RSA signature: this will reject any improperly encoded
122 DigestInfo structures.
124 Note: this is a precautionary measure and no attacks are currently known.
128 Changes between 0.9.8za and 0.9.8zb [6 Aug 2014]
130 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
131 to a denial of service attack. A malicious server can crash the client
132 with a null pointer dereference (read) by specifying an anonymous (EC)DH
133 ciphersuite and sending carefully crafted handshake messages.
135 Thanks to Felix Gröbert (Google) for discovering and researching this
140 *) By sending carefully crafted DTLS packets an attacker could cause openssl
141 to leak memory. This can be exploited through a Denial of Service attack.
142 Thanks to Adam Langley for discovering and researching this issue.
146 *) An attacker can force openssl to consume large amounts of memory whilst
147 processing DTLS handshake messages. This can be exploited through a
148 Denial of Service attack.
149 Thanks to Adam Langley for discovering and researching this issue.
153 *) An attacker can force an error condition which causes openssl to crash
154 whilst processing DTLS packets due to memory being freed twice. This
155 can be exploited through a Denial of Service attack.
156 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
161 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
162 X509_name_oneline, X509_name_print_ex et al. to leak some information
163 from the stack. Applications may be affected if they echo pretty printing
164 output to the attacker.
166 Thanks to Ivan Fratric (Google) for discovering this issue.
168 [Emilia Käsper, and Steve Henson]
170 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
171 for corner cases. (Certain input points at infinity could lead to
172 bogus results, with non-infinity inputs mapped to infinity too.)
175 Changes between 0.9.8y and 0.9.8za [5 Jun 2014]
177 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
178 handshake can force the use of weak keying material in OpenSSL
179 SSL/TLS clients and servers.
181 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
182 researching this issue. (CVE-2014-0224)
183 [KIKUCHI Masashi, Steve Henson]
185 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
186 OpenSSL DTLS client the code can be made to recurse eventually crashing
189 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
191 [Imre Rad, Steve Henson]
193 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
194 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
195 client or server. This is potentially exploitable to run arbitrary
196 code on a vulnerable client or server.
198 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
199 [Jüri Aedla, Steve Henson]
201 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
202 are subject to a denial of service attack.
204 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
205 this issue. (CVE-2014-3470)
206 [Felix Gröbert, Ivan Fratric, Steve Henson]
208 *) Fix for the attack described in the paper "Recovering OpenSSL
209 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
210 by Yuval Yarom and Naomi Benger. Details can be obtained from:
211 http://eprint.iacr.org/2014/140
213 Thanks to Yuval Yarom and Naomi Benger for discovering this
214 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
215 [Yuval Yarom and Naomi Benger]
217 Thanks to mancha for backporting the fix to the 0.9.8 branch.
219 *) Fix handling of warning-level alerts in SSL23 client mode so they
220 don't cause client-side termination (eg. on SNI unrecognized_name
221 warnings). Add client and server support for six additional alerts
222 per RFC 6066 and RFC 4279.
225 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
226 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
227 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
228 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
229 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
230 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
231 [Rob Stradling, Adam Langley]
233 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
235 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
237 This addresses the flaw in CBC record processing discovered by
238 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
239 at: http://www.isg.rhul.ac.uk/tls/
241 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
242 Security Group at Royal Holloway, University of London
243 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
244 Emilia Käsper for the initial patch.
246 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
248 *) Return an error when checking OCSP signatures when key is NULL.
249 This fixes a DoS attack. (CVE-2013-0166)
252 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
253 the right response is stapled. Also change SSL_get_certificate()
254 so it returns the certificate actually sent.
255 See http://rt.openssl.org/Ticket/Display.html?id=2836.
257 [Rob Stradling <rob.stradling@comodo.com>]
259 *) Fix possible deadlock when decoding public keys.
262 Changes between 0.9.8w and 0.9.8x [10 May 2012]
264 *) Sanity check record length before skipping explicit IV in DTLS
267 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
268 fuzzing as a service testing platform.
272 *) Initialise tkeylen properly when encrypting CMS messages.
273 Thanks to Solar Designer of Openwall for reporting this issue.
276 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
278 *) The fix for CVE-2012-2110 did not take into account that the
279 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
280 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
281 rejecting negative len parameter. (CVE-2012-2131)
282 [Tomas Hoger <thoger@redhat.com>]
284 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
286 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
287 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
288 in CRYPTO_realloc_clean.
290 Thanks to Tavis Ormandy, Google Security Team, for discovering this
291 issue and to Adam Langley <agl@chromium.org> for fixing it.
293 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
295 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
297 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
298 in CMS and PKCS7 code. When RSA decryption fails use a random key for
299 content decryption and always return the same error. Note: this attack
300 needs on average 2^20 messages so it only affects automated senders. The
301 old behaviour can be reenabled in the CMS code by setting the
302 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
303 an MMA defence is not necessary.
304 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
305 this issue. (CVE-2012-0884)
308 *) Fix CVE-2011-4619: make sure we really are receiving a
309 client hello before rejecting multiple SGC restarts. Thanks to
310 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
313 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
315 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
316 Thanks to Antonio Martin, Enterprise Secure Access Research and
317 Development, Cisco Systems, Inc. for discovering this bug and
318 preparing a fix. (CVE-2012-0050)
321 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
323 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
324 of the Vaudenay padding oracle attack on CBC mode encryption
325 which enables an efficient plaintext recovery attack against
326 the OpenSSL implementation of DTLS. Their attack exploits timing
327 differences arising during decryption processing. A research
328 paper describing this attack can be found at:
329 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
330 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
331 Security Group at Royal Holloway, University of London
332 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
333 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
334 for preparing the fix. (CVE-2011-4108)
335 [Robin Seggelmann, Michael Tuexen]
337 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
338 [Ben Laurie, Kasper <ekasper@google.com>]
340 *) Clear bytes used for block padding of SSL 3.0 records.
342 [Adam Langley (Google)]
344 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
345 Kadianakis <desnacked@gmail.com> for discovering this issue and
346 Adam Langley for preparing the fix. (CVE-2011-4619)
347 [Adam Langley (Google)]
349 *) Prevent malformed RFC3779 data triggering an assertion failure.
350 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
351 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
352 [Rob Austein <sra@hactrn.net>]
354 *) Fix ssl_ciph.c set-up race.
355 [Adam Langley (Google)]
357 *) Fix spurious failures in ecdsatest.c.
358 [Emilia Käsper (Google)]
360 *) Fix the BIO_f_buffer() implementation (which was mixing different
361 interpretations of the '..._len' fields).
362 [Adam Langley (Google)]
364 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
365 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
366 threads won't reuse the same blinding coefficients.
368 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
369 lock to call BN_BLINDING_invert_ex, and avoids one use of
370 BN_BLINDING_update for each BN_BLINDING structure (previously,
371 the last update always remained unused).
372 [Emilia Käsper (Google)]
374 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
375 for multi-threaded use of ECDH.
376 [Adam Langley (Google)]
378 *) Fix x509_name_ex_d2i memory leak on bad inputs.
381 *) Add protection against ECDSA timing attacks as mentioned in the paper
382 by Billy Bob Brumley and Nicola Tuveri, see:
384 http://eprint.iacr.org/2011/232.pdf
386 [Billy Bob Brumley and Nicola Tuveri]
388 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
390 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
391 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
393 *) Fix bug in string printing code: if *any* escaping is enabled we must
394 escape the escape character (backslash) or the resulting string is
398 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
400 *) Disable code workaround for ancient and obsolete Netscape browsers
401 and servers: an attacker can use it in a ciphersuite downgrade attack.
402 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
405 *) Fixed J-PAKE implementation error, originally discovered by
406 Sebastien Martini, further info and confirmation from Stefan
407 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
410 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
412 *) Fix extension code to avoid race conditions which can result in a buffer
413 overrun vulnerability: resumed sessions must not be modified as they can
414 be shared by multiple threads. CVE-2010-3864
417 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
420 *) Don't reencode certificate when calculating signature: cache and use
421 the original encoding instead. This makes signature verification of
422 some broken encodings work correctly.
425 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
426 is also one of the inputs.
427 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
429 *) Don't repeatedly append PBE algorithms to table if they already exist.
430 Sort table on each new add. This effectively makes the table read only
431 after all algorithms are added and subsequent calls to PKCS12_pbe_add
435 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
437 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
440 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
441 access or freeing data twice (CVE-2010-0742)
442 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
444 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
445 common in certificates and some applications which only call
446 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
450 Reduce copying into .apps and .test in makevms.com
451 Don't try to use blank CA certificate in CA.com
452 Allow use of C files from original directories in maketests.com
453 [Steven M. Schweda" <sms@antinode.info>]
455 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
457 *) When rejecting SSL/TLS records due to an incorrect version number, never
458 update s->server with a new major version number. As of
459 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
460 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
461 the previous behavior could result in a read attempt at NULL when
462 receiving specific incorrect SSL/TLS records once record payload
463 protection is active. (CVE-2010-0740)
464 [Bodo Moeller, Adam Langley <agl@chromium.org>]
466 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
467 could be crashed if the relevant tables were not present (e.g. chrooted).
468 [Tomas Hoger <thoger@redhat.com>]
470 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
472 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
473 [Martin Olsson, Neel Mehta]
475 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
476 accommodate for stack sorting, always a write lock!).
479 *) On some versions of WIN32 Heap32Next is very slow. This can cause
480 excessive delays in the RAND_poll(): over a minute. As a workaround
481 include a time check in the inner Heap32Next loop too.
484 *) The code that handled flushing of data in SSL/TLS originally used the
485 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
486 the problem outlined in PR#1949. The fix suggested there however can
487 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
488 of Apache). So instead simplify the code to flush unconditionally.
489 This should be fine since flushing with no data to flush is a no op.
492 *) Handle TLS versions 2.0 and later properly and correctly use the
493 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
494 off ancient servers have a habit of sticking around for a while...
497 *) Modify compression code so it frees up structures without using the
498 ex_data callbacks. This works around a problem where some applications
499 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
500 restarting) then use compression (e.g. SSL with compression) later.
501 This results in significant per-connection memory leaks and
502 has caused some security issues including CVE-2008-1678 and
506 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
507 change when encrypting or decrypting.
510 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
511 connect and renegotiate with servers which do not support RI.
512 Until RI is more widely deployed this option is enabled by default.
515 *) Add "missing" ssl ctrls to clear options and mode.
518 *) If client attempts to renegotiate and doesn't support RI respond with
519 a no_renegotiation alert as required by RFC5746. Some renegotiating
520 TLS clients will continue a connection gracefully when they receive
521 the alert. Unfortunately OpenSSL mishandled this alert and would hang
522 waiting for a server hello which it will never receive. Now we treat a
523 received no_renegotiation alert as a fatal error. This is because
524 applications requesting a renegotiation might well expect it to succeed
525 and would have no code in place to handle the server denying it so the
526 only safe thing to do is to terminate the connection.
529 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
530 peer supports secure renegotiation and 0 otherwise. Print out peer
531 renegotiation support in s_client/s_server.
534 *) Replace the highly broken and deprecated SPKAC certification method with
535 the updated NID creation version. This should correctly handle UTF8.
538 *) Implement RFC5746. Re-enable renegotiation but require the extension
539 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
540 turns out to be a bad idea. It has been replaced by
541 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
542 SSL_CTX_set_options(). This is really not recommended unless you
543 know what you are doing.
544 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
546 *) Fixes to stateless session resumption handling. Use initial_ctx when
547 issuing and attempting to decrypt tickets in case it has changed during
548 servername handling. Use a non-zero length session ID when attempting
549 stateless session resumption: this makes it possible to determine if
550 a resumption has occurred immediately after receiving server hello
551 (several places in OpenSSL subtly assume this) instead of later in
555 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
556 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
557 fixes for a few places where the return code is not checked
559 [Julia Lawall <julia@diku.dk>]
561 *) Add --strict-warnings option to Configure script to include devteam
562 warnings in other configurations.
565 *) Add support for --libdir option and LIBDIR variable in makefiles. This
566 makes it possible to install openssl libraries in locations which
567 have names other than "lib", for example "/usr/lib64" which some
569 [Steve Henson, based on patch from Jeremy Utley]
571 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
572 X690 8.9.12 and can produce some misleading textual output of OIDs.
573 [Steve Henson, reported by Dan Kaminsky]
575 *) Delete MD2 from algorithm tables. This follows the recommendation in
576 several standards that it is not used in new applications due to
577 several cryptographic weaknesses. For binary compatibility reasons
578 the MD2 API is still compiled in by default.
581 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
585 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
586 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
588 [Guenter <lists@gknw.net>]
590 *) Fix the server certificate chain building code to use X509_verify_cert(),
591 it used to have an ad-hoc builder which was unable to cope with anything
592 other than a simple chain.
593 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
595 *) Don't check self signed certificate signatures in X509_verify_cert()
596 by default (a flag can override this): it just wastes time without
597 adding any security. As a useful side effect self signed root CAs
598 with non-FIPS digests are now usable in FIPS mode.
601 *) In dtls1_process_out_of_seq_message() the check if the current message
602 is already buffered was missing. For every new message was memory
603 allocated, allowing an attacker to perform an denial of service attack
604 with sending out of seq handshake messages until there is no memory
605 left. Additionally every future messege was buffered, even if the
606 sequence number made no sense and would be part of another handshake.
607 So only messages with sequence numbers less than 10 in advance will be
608 buffered. (CVE-2009-1378)
609 [Robin Seggelmann, discovered by Daniel Mentz]
611 *) Records are buffered if they arrive with a future epoch to be
612 processed after finishing the corresponding handshake. There is
613 currently no limitation to this buffer allowing an attacker to perform
614 a DOS attack with sending records with future epochs until there is no
615 memory left. This patch adds the pqueue_size() function to detemine
616 the size of a buffer and limits the record buffer to 100 entries.
618 [Robin Seggelmann, discovered by Daniel Mentz]
620 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
621 parent structure is freed. (CVE-2009-1379)
624 *) Handle non-blocking I/O properly in SSL_shutdown() call.
625 [Darryl Miles <darryl-mailinglists@netbauds.net>]
628 [Ilya O. <vrghost@gmail.com>]
630 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
632 *) Disable renegotiation completely - this fixes a severe security
633 problem (CVE-2009-3555) at the cost of breaking all
634 renegotiation. Renegotiation can be re-enabled by setting
635 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
636 run-time. This is really not recommended unless you know what
640 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
642 *) Don't set val to NULL when freeing up structures, it is freed up by
643 underlying code. If sizeof(void *) > sizeof(long) this can result in
644 zeroing past the valid field. (CVE-2009-0789)
645 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
647 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
648 checked correctly. This would allow some invalid signed attributes to
649 appear to verify correctly. (CVE-2009-0591)
650 [Ivan Nestlerode <inestlerode@us.ibm.com>]
652 *) Reject UniversalString and BMPString types with invalid lengths. This
653 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
654 a legal length. (CVE-2009-0590)
657 *) Set S/MIME signing as the default purpose rather than setting it
658 unconditionally. This allows applications to override it at the store
662 *) Permit restricted recursion of ASN1 strings. This is needed in practice
663 to handle some structures.
666 *) Improve efficiency of mem_gets: don't search whole buffer each time
668 [Jeremy Shapiro <jnshapir@us.ibm.com>]
670 *) New -hex option for openssl rand.
673 *) Print out UTF8String and NumericString when parsing ASN1.
676 *) Support NumericString type for name components.
679 *) Allow CC in the environment to override the automatically chosen
680 compiler. Note that nothing is done to ensure flags work with the
684 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
686 *) Properly check EVP_VerifyFinal() and similar return values
688 [Ben Laurie, Bodo Moeller, Google Security Team]
690 *) Enable TLS extensions by default.
693 *) Allow the CHIL engine to be loaded, whether the application is
694 multithreaded or not. (This does not release the developer from the
695 obligation to set up the dynamic locking callbacks.)
696 [Sander Temme <sander@temme.net>]
698 *) Use correct exit code if there is an error in dgst command.
699 [Steve Henson; problem pointed out by Roland Dirlewanger]
701 *) Tweak Configure so that you need to say "experimental-jpake" to enable
702 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
705 *) Add experimental JPAKE support, including demo authentication in
706 s_client and s_server.
709 *) Set the comparison function in v3_addr_canonize().
710 [Rob Austein <sra@hactrn.net>]
712 *) Add support for XMPP STARTTLS in s_client.
713 [Philip Paeps <philip@freebsd.org>]
715 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
716 to ensure that even with this option, only ciphersuites in the
717 server's preference list will be accepted. (Note that the option
718 applies only when resuming a session, so the earlier behavior was
719 just about the algorithm choice for symmetric cryptography.)
722 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
724 *) Fix NULL pointer dereference if a DTLS server received
725 ChangeCipherSpec as first record (CVE-2009-1386).
728 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
729 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
732 *) The fix in 0.9.8c that supposedly got rid of unsafe
733 double-checked locking was incomplete for RSA blinding,
734 addressing just one layer of what turns out to have been
735 doubly unsafe triple-checked locking.
737 So now fix this for real by retiring the MONT_HELPER macro
738 in crypto/rsa/rsa_eay.c.
740 [Bodo Moeller; problem pointed out by Marius Schilder]
742 *) Various precautionary measures:
744 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
746 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
747 (NB: This would require knowledge of the secret session ticket key
748 to exploit, in which case you'd be SOL either way.)
750 - Change bn_nist.c so that it will properly handle input BIGNUMs
751 outside the expected range.
753 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
756 [Neel Mehta, Bodo Moeller]
758 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
759 the load fails. Useful for distros.
760 [Ben Laurie and the FreeBSD team]
762 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
765 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
768 *) Expand ENGINE to support engine supplied SSL client certificate functions.
770 This work was sponsored by Logica.
773 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
774 keystores. Support for SSL/TLS client authentication too.
775 Not compiled unless enable-capieng specified to Configure.
777 This work was sponsored by Logica.
780 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
781 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
782 attribute creation routines such as certifcate requests and PKCS#12
786 Changes between 0.9.8g and 0.9.8h [28 May 2008]
788 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
789 handshake which could lead to a cilent crash as found using the
790 Codenomicon TLS test suite (CVE-2008-1672)
791 [Steve Henson, Mark Cox]
793 *) Fix double free in TLS server name extensions which could lead to
794 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
797 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
799 Clear the error queue to ensure that error entries left from
800 older function calls do not interfere with the correct operation.
801 [Lutz Jaenicke, Erik de Castro Lopo]
803 *) Remove root CA certificates of commercial CAs:
805 The OpenSSL project does not recommend any specific CA and does not
806 have any policy with respect to including or excluding any CA.
807 Therefore it does not make any sense to ship an arbitrary selection
808 of root CA certificates with the OpenSSL software.
811 *) RSA OAEP patches to fix two separate invalid memory reads.
812 The first one involves inputs when 'lzero' is greater than
813 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
814 before the beginning of from). The second one involves inputs where
815 the 'db' section contains nothing but zeroes (there is a one-byte
816 invalid read after the end of 'db').
817 [Ivan Nestlerode <inestlerode@us.ibm.com>]
819 *) Partial backport from 0.9.9-dev:
821 Introduce bn_mul_mont (dedicated Montgomery multiplication
822 procedure) as a candidate for BIGNUM assembler implementation.
823 While 0.9.9-dev uses assembler for various architectures, only
824 x86_64 is available by default here in the 0.9.8 branch, and
825 32-bit x86 is available through a compile-time setting.
827 To try the 32-bit x86 assembler implementation, use Configure
828 option "enable-montasm" (which exists only for this backport).
830 As "enable-montasm" for 32-bit x86 disclaims code stability
831 anyway, in this constellation we activate additional code
832 backported from 0.9.9-dev for further performance improvements,
833 namely BN_from_montgomery_word. (To enable this otherwise,
834 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
836 [Andy Polyakov (backport partially by Bodo Moeller)]
838 *) Add TLS session ticket callback. This allows an application to set
839 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
840 values. This is useful for key rollover for example where several key
841 sets may exist with different names.
844 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
845 This was broken until now in 0.9.8 releases, such that the only way
846 a registered ENGINE could be used (assuming it initialises
847 successfully on the host) was to explicitly set it as the default
848 for the relevant algorithms. This is in contradiction with 0.9.7
849 behaviour and the documentation. With this fix, when an ENGINE is
850 registered into a given algorithm's table of implementations, the
851 'uptodate' flag is reset so that auto-discovery will be used next
852 time a new context for that algorithm attempts to select an
854 [Ian Lister (tweaked by Geoff Thorpe)]
856 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
857 implemention in the following ways:
859 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
862 Lack of BER streaming support means one pass streaming processing is
863 only supported if data is detached: setting the streaming flag is
864 ignored for embedded content.
866 CMS support is disabled by default and must be explicitly enabled
867 with the enable-cms configuration option.
870 *) Update the GMP engine glue to do direct copies between BIGNUM and
871 mpz_t when openssl and GMP use the same limb size. Otherwise the
872 existing "conversion via a text string export" trick is still used.
873 [Paul Sheer <paulsheer@gmail.com>]
875 *) Zlib compression BIO. This is a filter BIO which compressed and
876 uncompresses any data passed through it.
879 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
880 RFC3394 compatible AES key wrapping.
883 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
884 sets string data without copying. X509_ALGOR_set0() and
885 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
886 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
887 from an X509_ATTRIBUTE structure optionally checking it occurs only
888 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
892 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
893 to get the expected BN_FLG_CONSTTIME behavior.
894 [Bodo Moeller (Google)]
898 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
899 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
900 - added some more tests to do_tests.pl
901 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
902 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
903 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
904 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
905 - various changes to netware.pl to enable gcc-cross builds on Win32
907 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
908 - various changes to fix missing prototype warnings
909 - fixed x86nasm.pl to create correct asm files for NASM COFF output
910 - added AES, WHIRLPOOL and CPUID assembler code to build files
911 - added missing AES assembler make rules to mk1mf.pl
912 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
913 [Guenter Knauf <eflash@gmx.net>]
915 *) Implement certificate status request TLS extension defined in RFC3546.
916 A client can set the appropriate parameters and receive the encoded
917 OCSP response via a callback. A server can query the supplied parameters
918 and set the encoded OCSP response in the callback. Add simplified examples
919 to s_client and s_server.
922 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
925 + Binary incompatibility of ssl_ctx_st structure
926 + DTLS interoperation with non-compliant servers
927 + Don't call get_session_cb() without proposed session
928 + Fix ia64 assembler code
929 [Andy Polyakov, Steve Henson]
931 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
933 *) DTLS Handshake overhaul. There were longstanding issues with
934 OpenSSL DTLS implementation, which were making it impossible for
935 RFC 4347 compliant client to communicate with OpenSSL server.
936 Unfortunately just fixing these incompatibilities would "cut off"
937 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
938 server keeps tolerating non RFC compliant syntax. The opposite is
939 not true, 0.9.8f client can not communicate with earlier server.
940 This update even addresses CVE-2007-4995.
943 *) Changes to avoid need for function casts in OpenSSL: some compilers
944 (gcc 4.2 and later) reject their use.
945 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
948 *) Add RFC4507 support to OpenSSL. This includes the corrections in
949 RFC4507bis. The encrypted ticket format is an encrypted encoded
950 SSL_SESSION structure, that way new session features are automatically
953 If a client application caches session in an SSL_SESSION structure
954 support is transparent because tickets are now stored in the encoded
957 The SSL_CTX structure automatically generates keys for ticket
958 protection in servers so again support should be possible
959 with no application modification.
961 If a client or server wishes to disable RFC4507 support then the option
962 SSL_OP_NO_TICKET can be set.
964 Add a TLS extension debugging callback to allow the contents of any client
965 or server extensions to be examined.
967 This work was sponsored by Google.
970 *) Add initial support for TLS extensions, specifically for the server_name
971 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
972 have new members for a host name. The SSL data structure has an
973 additional member SSL_CTX *initial_ctx so that new sessions can be
974 stored in that context to allow for session resumption, even after the
975 SSL has been switched to a new SSL_CTX in reaction to a client's
976 server_name extension.
978 New functions (subject to change):
981 SSL_get_servername_type()
984 New CTRL codes and macros (subject to change):
986 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
987 - SSL_CTX_set_tlsext_servername_callback()
988 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
989 - SSL_CTX_set_tlsext_servername_arg()
990 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
992 openssl s_client has a new '-servername ...' option.
994 openssl s_server has new options '-servername_host ...', '-cert2 ...',
995 '-key2 ...', '-servername_fatal' (subject to change). This allows
996 testing the HostName extension for a specific single host name ('-cert'
997 and '-key' remain fallbacks for handshakes without HostName
998 negotiation). If the unrecogninzed_name alert has to be sent, this by
999 default is a warning; it becomes fatal with the '-servername_fatal'
1002 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1004 *) Add AES and SSE2 assembly language support to VC++ build.
1007 *) Mitigate attack on final subtraction in Montgomery reduction.
1010 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1011 (which previously caused an internal error).
1014 *) Squeeze another 10% out of IGE mode when in != out.
1017 *) AES IGE mode speedup.
1018 [Dean Gaudet (Google)]
1020 *) Add the Korean symmetric 128-bit cipher SEED (see
1021 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1022 add SEED ciphersuites from RFC 4162:
1024 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1025 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1026 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1027 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1029 To minimize changes between patchlevels in the OpenSSL 0.9.8
1030 series, SEED remains excluded from compilation unless OpenSSL
1031 is configured with 'enable-seed'.
1032 [KISA, Bodo Moeller]
1034 *) Mitigate branch prediction attacks, which can be practical if a
1035 single processor is shared, allowing a spy process to extract
1036 information. For detailed background information, see
1037 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1038 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1039 and Necessary Software Countermeasures"). The core of the change
1040 are new versions BN_div_no_branch() and
1041 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1042 respectively, which are slower, but avoid the security-relevant
1043 conditional branches. These are automatically called by BN_div()
1044 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1045 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1046 remove a conditional branch.
1048 BN_FLG_CONSTTIME is the new name for the previous
1049 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1050 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1051 in the exponent causes BN_mod_exp_mont() to use the alternative
1052 implementation in BN_mod_exp_mont_consttime().) The old name
1053 remains as a deprecated alias.
1055 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1056 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1057 constant-time implementations for more than just exponentiation.
1058 Here too the old name is kept as a deprecated alias.
1060 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1061 the BN_BLINDING structure gets an independent copy of the
1062 modulus. This means that the previous "BIGNUM *m" argument to
1063 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1064 essentially becomes "const BIGNUM *m", although we can't actually
1065 change this in the header file before 0.9.9. It allows
1066 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1067 enable BN_FLG_CONSTTIME.
1069 [Matthew D Wood (Intel Corp)]
1071 *) In the SSL/TLS server implementation, be strict about session ID
1072 context matching (which matters if an application uses a single
1073 external cache for different purposes). Previously,
1074 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1075 set. This did ensure strict client verification, but meant that,
1076 with applications using a single external cache for quite
1077 different requirements, clients could circumvent ciphersuite
1078 restrictions for a given session ID context by starting a session
1079 in a different context.
1082 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1083 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1084 authentication-only ciphersuites.
1087 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1088 not complete and could lead to a possible single byte overflow
1089 (CVE-2007-5135) [Ben Laurie]
1091 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1093 *) Since AES128 and AES256 (and similarly Camellia128 and
1094 Camellia256) share a single mask bit in the logic of
1095 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1096 kludge to work properly if AES128 is available and AES256 isn't
1097 (or if Camellia128 is available and Camellia256 isn't).
1100 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1101 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1102 When a point or a seed is encoded in a BIT STRING, we need to
1103 prevent the removal of trailing zero bits to get the proper DER
1104 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1105 of a NamedBitList, for which trailing 0 bits need to be removed.)
1108 *) Have SSL/TLS server implementation tolerate "mismatched" record
1109 protocol version while receiving ClientHello even if the
1110 ClientHello is fragmented. (The server can't insist on the
1111 particular protocol version it has chosen before the ServerHello
1112 message has informed the client about his choice.)
1115 *) Add RFC 3779 support.
1116 [Rob Austein for ARIN, Ben Laurie]
1118 *) Load error codes if they are not already present instead of using a
1119 static variable. This allows them to be cleanly unloaded and reloaded.
1120 Improve header file function name parsing.
1123 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1124 or CAPABILITY handshake as required by RFCs.
1127 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1129 *) Introduce limits to prevent malicious keys being able to
1130 cause a denial of service. (CVE-2006-2940)
1131 [Steve Henson, Bodo Moeller]
1133 *) Fix ASN.1 parsing of certain invalid structures that can result
1134 in a denial of service. (CVE-2006-2937) [Steve Henson]
1136 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1137 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1139 *) Fix SSL client code which could crash if connecting to a
1140 malicious SSLv2 server. (CVE-2006-4343)
1141 [Tavis Ormandy and Will Drewry, Google Security Team]
1143 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1144 match only those. Before that, "AES256-SHA" would be interpreted
1145 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1146 the same strength classification in 0.9.7h) as we currently only
1147 have a single AES bit in the ciphersuite description bitmap.
1148 That change, however, also applied to ciphersuite strings such as
1149 "RC4-MD5" that intentionally matched multiple ciphersuites --
1150 namely, SSL 2.0 ciphersuites in addition to the more common ones
1151 from SSL 3.0/TLS 1.0.
1153 So we change the selection algorithm again: Naming an explicit
1154 ciphersuite selects this one ciphersuite, and any other similar
1155 ciphersuite (same bitmap) from *other* protocol versions.
1156 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1157 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1159 Since SSL 2.0 does not have any ciphersuites for which the
1160 128/256 bit distinction would be relevant, this works for now.
1161 The proper fix will be to use different bits for AES128 and
1162 AES256, which would have avoided the problems from the beginning;
1163 however, bits are scarce, so we can only do this in a new release
1164 (not just a patchlevel) when we can change the SSL_CIPHER
1165 definition to split the single 'unsigned long mask' bitmap into
1166 multiple values to extend the available space.
1170 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1172 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1173 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1175 *) Add AES IGE and biIGE modes.
1178 *) Change the Unix randomness entropy gathering to use poll() when
1179 possible instead of select(), since the latter has some
1180 undesirable limitations.
1181 [Darryl Miles via Richard Levitte and Bodo Moeller]
1183 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1184 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1185 cannot be implicitly activated as part of, e.g., the "AES" alias.
1186 However, please upgrade to OpenSSL 0.9.9[-dev] for
1187 non-experimental use of the ECC ciphersuites to get TLS extension
1188 support, which is required for curve and point format negotiation
1189 to avoid potential handshake problems.
1192 *) Disable rogue ciphersuites:
1194 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1195 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1196 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1198 The latter two were purportedly from
1199 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1202 Also deactivate the remaining ciphersuites from
1203 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1204 unofficial, and the ID has long expired.
1207 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1208 dual-core machines) and other potential thread-safety issues.
1211 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1212 versions), which is now available for royalty-free use
1213 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1214 Also, add Camellia TLS ciphersuites from RFC 4132.
1216 To minimize changes between patchlevels in the OpenSSL 0.9.8
1217 series, Camellia remains excluded from compilation unless OpenSSL
1218 is configured with 'enable-camellia'.
1221 *) Disable the padding bug check when compression is in use. The padding
1222 bug check assumes the first packet is of even length, this is not
1223 necessarily true if compresssion is enabled and can result in false
1224 positives causing handshake failure. The actual bug test is ancient
1225 code so it is hoped that implementations will either have fixed it by
1226 now or any which still have the bug do not support compression.
1229 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1231 *) When applying a cipher rule check to see if string match is an explicit
1232 cipher suite and only match that one cipher suite if it is.
1235 *) Link in manifests for VC++ if needed.
1236 [Austin Ziegler <halostatue@gmail.com>]
1238 *) Update support for ECC-based TLS ciphersuites according to
1239 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1240 TLS extensions, which are supported starting with the 0.9.9
1241 branch, not in the OpenSSL 0.9.8 branch).
1244 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1245 opaque EVP_CIPHER_CTX handling.
1248 *) Fixes and enhancements to zlib compression code. We now only use
1249 "zlib1.dll" and use the default __cdecl calling convention on Win32
1250 to conform with the standards mentioned here:
1251 http://www.zlib.net/DLL_FAQ.txt
1252 Static zlib linking now works on Windows and the new --with-zlib-include
1253 --with-zlib-lib options to Configure can be used to supply the location
1254 of the headers and library. Gracefully handle case where zlib library
1258 *) Several fixes and enhancements to the OID generation code. The old code
1259 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1260 handle numbers larger than ULONG_MAX, truncated printing and had a
1261 non standard OBJ_obj2txt() behaviour.
1264 *) Add support for building of engines under engine/ as shared libraries
1265 under VC++ build system.
1268 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1269 Hopefully, we will not see any false combination of paths any more.
1272 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1274 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1275 (part of SSL_OP_ALL). This option used to disable the
1276 countermeasure against man-in-the-middle protocol-version
1277 rollback in the SSL 2.0 server implementation, which is a bad
1278 idea. (CVE-2005-2969)
1280 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1281 for Information Security, National Institute of Advanced Industrial
1282 Science and Technology [AIST], Japan)]
1284 *) Add two function to clear and return the verify parameter flags.
1287 *) Keep cipherlists sorted in the source instead of sorting them at
1288 runtime, thus removing the need for a lock.
1291 *) Avoid some small subgroup attacks in Diffie-Hellman.
1292 [Nick Mathewson and Ben Laurie]
1294 *) Add functions for well-known primes.
1297 *) Extended Windows CE support.
1298 [Satoshi Nakamura and Andy Polyakov]
1300 *) Initialize SSL_METHOD structures at compile time instead of during
1301 runtime, thus removing the need for a lock.
1304 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1305 attempting to decrypt each encrypted key in turn. Add support to
1309 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1311 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1314 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1317 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1318 key into the same file any more.
1321 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1324 *) Add -utf8 command line and config file option to 'ca'.
1325 [Stefan <stf@udoma.org]
1327 *) Removed the macro des_crypt(), as it seems to conflict with some
1328 libraries. Use DES_crypt().
1331 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1332 involves renaming the source and generated shared-libs for
1333 both. The engines will accept the corrected or legacy ids
1334 ('ncipher' and '4758_cca' respectively) when binding. NB,
1335 this only applies when building 'shared'.
1336 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1338 *) Add attribute functions to EVP_PKEY structure. Modify
1339 PKCS12_create() to recognize a CSP name attribute and
1340 use it. Make -CSP option work again in pkcs12 utility.
1343 *) Add new functionality to the bn blinding code:
1344 - automatic re-creation of the BN_BLINDING parameters after
1345 a fixed number of uses (currently 32)
1346 - add new function for parameter creation
1347 - introduce flags to control the update behaviour of the
1348 BN_BLINDING parameters
1349 - hide BN_BLINDING structure
1350 Add a second BN_BLINDING slot to the RSA structure to improve
1351 performance when a single RSA object is shared among several
1355 *) Add support for DTLS.
1356 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1358 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1359 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1362 *) Remove buggy and incompletet DH cert support from
1363 ssl/ssl_rsa.c and ssl/s3_both.c
1366 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1367 the apps/openssl applications.
1370 *) Compile clean with "-Wall -Wmissing-prototypes
1371 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1372 DEBUG_SAFESTACK must also be set.
1375 *) Change ./Configure so that certain algorithms can be disabled by default.
1376 The new counterpiece to "no-xxx" is "enable-xxx".
1378 The patented RC5 and MDC2 algorithms will now be disabled unless
1379 "enable-rc5" and "enable-mdc2", respectively, are specified.
1381 (IDEA remains enabled despite being patented. This is because IDEA
1382 is frequently required for interoperability, and there is no license
1383 fee for non-commercial use. As before, "no-idea" can be used to
1384 avoid this algorithm.)
1388 *) Add processing of proxy certificates (see RFC 3820). This work was
1389 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1390 EGEE (Enabling Grids for E-science in Europe).
1393 *) RC4 performance overhaul on modern architectures/implementations, such
1394 as Intel P4, IA-64 and AMD64.
1397 *) New utility extract-section.pl. This can be used specify an alternative
1398 section number in a pod file instead of having to treat each file as
1399 a separate case in Makefile. This can be done by adding two lines to the
1402 =for comment openssl_section:XXX
1404 The blank line is mandatory.
1408 *) New arguments -certform, -keyform and -pass for s_client and s_server
1409 to allow alternative format key and certificate files and passphrase
1413 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1414 update associated structures and add various utility functions.
1416 Add new policy related verify parameters, include policy checking in
1417 standard verify code. Enhance 'smime' application with extra parameters
1418 to support policy checking and print out.
1421 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1422 Nehemiah processors. These extensions support AES encryption in hardware
1423 as well as RNG (though RNG support is currently disabled).
1424 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1426 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1429 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1430 [Andy Polyakov and a number of other people]
1432 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1433 implementation contributed by IBM.
1434 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1436 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1437 exponent rather than 'unsigned long'. There is a corresponding change to
1438 the new 'rsa_keygen' element of the RSA_METHOD structure.
1439 [Jelte Jansen, Geoff Thorpe]
1441 *) Functionality for creating the initial serial number file is now
1442 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1444 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1445 number file to 1, which is bound to cause problems. To avoid
1446 the problems while respecting compatibility between different 0.9.7
1447 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1448 CA.pl for serial number initialization. With the new release 0.9.8,
1449 we can fix the problem directly in the 'ca' utility.)
1452 *) Reduced header interdepencies by declaring more opaque objects in
1453 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1454 give fewer recursive includes, which could break lazy source code - so
1455 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1456 developers should define this symbol when building and using openssl to
1457 ensure they track the recommended behaviour, interfaces, [etc], but
1458 backwards-compatible behaviour prevails when this isn't defined.
1461 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1464 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1465 This will generate a random key of the appropriate length based on the
1466 cipher context. The EVP_CIPHER can provide its own random key generation
1467 routine to support keys of a specific form. This is used in the des and
1468 3des routines to generate a key of the correct parity. Update S/MIME
1469 code to use new functions and hence generate correct parity DES keys.
1470 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1471 valid (weak or incorrect parity).
1474 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1475 as looking them up. This is useful when the verified structure may contain
1476 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1477 present unless the new PKCS7_NO_CRL flag is asserted.
1480 *) Extend ASN1 oid configuration module. It now additionally accepts the
1483 shortName = some long name, 1.2.3.4
1486 *) Reimplemented the BN_CTX implementation. There is now no more static
1487 limitation on the number of variables it can handle nor the depth of the
1488 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1489 information can now expand as required, and rather than having a single
1490 static array of bignums, BN_CTX now uses a linked-list of such arrays
1491 allowing it to expand on demand whilst maintaining the usefulness of
1492 BN_CTX's "bundling".
1495 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1496 to allow all RSA operations to function using a single BN_CTX.
1499 *) Preliminary support for certificate policy evaluation and checking. This
1500 is initially intended to pass the tests outlined in "Conformance Testing
1501 of Relying Party Client Certificate Path Processing Logic" v1.07.
1504 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1505 remained unused and not that useful. A variety of other little bignum
1506 tweaks and fixes have also been made continuing on from the audit (see
1510 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1511 associated ASN1, EVP and SSL functions and old ASN1 macros.
1514 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1515 and this should never fail. So the return value from the use of
1516 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1517 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1520 *) BN_CTX_get() should return zero-valued bignums, providing the same
1521 initialised value as BN_new().
1522 [Geoff Thorpe, suggested by Ulf Möller]
1524 *) Support for inhibitAnyPolicy certificate extension.
1527 *) An audit of the BIGNUM code is underway, for which debugging code is
1528 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1529 is considered valid when processing BIGNUMs, and causes execution to
1530 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1531 further steps are taken to deliberately pollute unused data in BIGNUM
1532 structures to try and expose faulty code further on. For now, openssl will
1533 (in its default mode of operation) continue to tolerate the inconsistent
1534 forms that it has tolerated in the past, but authors and packagers should
1535 consider trying openssl and their own applications when compiled with
1536 these debugging symbols defined. It will help highlight potential bugs in
1537 their own code, and will improve the test coverage for OpenSSL itself. At
1538 some point, these tighter rules will become openssl's default to improve
1539 maintainability, though the assert()s and other overheads will remain only
1540 in debugging configurations. See bn.h for more details.
1541 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1543 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1544 that can only be obtained through BN_CTX_new() (which implicitly
1545 initialises it). The presence of this function only made it possible
1546 to overwrite an existing structure (and cause memory leaks).
1549 *) Because of the callback-based approach for implementing LHASH as a
1550 template type, lh_insert() adds opaque objects to hash-tables and
1551 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1552 to clean up those corresponding objects before destroying the hash table
1553 (and losing the object pointers). So some over-zealous constifications in
1554 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1555 objects as "const" and the lh_doall[_arg] callback wrappers are not
1556 prototyped to have "const" restrictions on the object pointers they are
1557 given (and so aren't required to cast them away any more).
1560 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1561 (speed) prefers to use its own implementation. The two implementations
1562 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1563 its object type properly exposed (MS_TM) instead of casting to/from "char
1564 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1565 aren't necessarily the greatest nomenclatures - but this is what was used
1566 internally to the implementation so I've used that for now.
1569 *) Ensure that deprecated functions do not get compiled when
1570 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1571 the self-tests were still using deprecated key-generation functions so
1572 these have been updated also.
1575 *) Reorganise PKCS#7 code to separate the digest location functionality
1576 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1577 New function PKCS7_set_digest() to set the digest type for PKCS#7
1578 digestedData type. Add additional code to correctly generate the
1579 digestedData type and add support for this type in PKCS7 initialization
1583 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1584 structure of type "other".
1587 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1588 sure the loop does correctly stop and breaking ("division by zero")
1589 modulus operations are not performed. The (pre-generated) prime
1590 table crypto/bn/bn_prime.h was already correct, but it could not be
1591 re-generated on some platforms because of the "division by zero"
1592 situation in the script.
1593 [Ralf S. Engelschall]
1595 *) Update support for ECC-based TLS ciphersuites according to
1596 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1597 SHA-1 now is only used for "small" curves (where the
1598 representation of a field element takes up to 24 bytes); for
1599 larger curves, the field element resulting from ECDH is directly
1600 used as premaster secret.
1601 [Douglas Stebila (Sun Microsystems Laboratories)]
1603 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1604 curve secp160r1 to the tests.
1605 [Douglas Stebila (Sun Microsystems Laboratories)]
1607 *) Add the possibility to load symbols globally with DSO.
1608 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1610 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1611 control of the error stack.
1614 *) Add support for STORE in ENGINE.
1617 *) Add the STORE type. The intention is to provide a common interface
1618 to certificate and key stores, be they simple file-based stores, or
1619 HSM-type store, or LDAP stores, or...
1620 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1623 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1624 pass a list of arguments to any function as well as provide a way
1625 for a function to pass data back to the caller.
1628 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1629 works like BUF_strdup() but can be used to duplicate a portion of
1630 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1634 *) Add the function sk_find_ex() which works like sk_find(), but will
1635 return an index to an element even if an exact match couldn't be
1636 found. The index is guaranteed to point at the element where the
1637 searched-for key would be inserted to preserve sorting order.
1640 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1641 takes an extra flags argument for optional functionality. Currently,
1642 the following flags are defined:
1644 OBJ_BSEARCH_VALUE_ON_NOMATCH
1645 This one gets OBJ_bsearch_ex() to return a pointer to the first
1646 element where the comparing function returns a negative or zero
1649 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1650 This one gets OBJ_bsearch_ex() to return a pointer to the first
1651 element where the comparing function returns zero. This is useful
1652 if there are more than one element where the comparing function
1656 *) Make it possible to create self-signed certificates with 'openssl ca'
1657 in such a way that the self-signed certificate becomes part of the
1658 CA database and uses the same mechanisms for serial number generation
1659 as all other certificate signing. The new flag '-selfsign' enables
1660 this functionality. Adapt CA.sh and CA.pl.in.
1663 *) Add functionality to check the public key of a certificate request
1664 against a given private. This is useful to check that a certificate
1665 request can be signed by that key (self-signing).
1668 *) Make it possible to have multiple active certificates with the same
1669 subject in the CA index file. This is done only if the keyword
1670 'unique_subject' is set to 'no' in the main CA section (default
1671 if 'CA_default') of the configuration file. The value is saved
1672 with the database itself in a separate index attribute file,
1673 named like the index file with '.attr' appended to the name.
1676 *) Generate muti valued AVAs using '+' notation in config files for
1680 *) Support for nameConstraints certificate extension.
1683 *) Support for policyConstraints certificate extension.
1686 *) Support for policyMappings certificate extension.
1689 *) Make sure the default DSA_METHOD implementation only uses its
1690 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1691 and change its own handlers to be NULL so as to remove unnecessary
1692 indirection. This lets alternative implementations fallback to the
1693 default implementation more easily.
1696 *) Support for directoryName in GeneralName related extensions
1700 *) Make it possible to link applications using Makefile.shared.
1701 Make that possible even when linking against static libraries!
1704 *) Support for single pass processing for S/MIME signing. This now
1705 means that S/MIME signing can be done from a pipe, in addition
1706 cleartext signing (multipart/signed type) is effectively streaming
1707 and the signed data does not need to be all held in memory.
1709 This is done with a new flag PKCS7_STREAM. When this flag is set
1710 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1711 is done after the data is output (and digests calculated) in
1712 SMIME_write_PKCS7().
1715 *) Add full support for -rpath/-R, both in shared libraries and
1716 applications, at least on the platforms where it's known how
1720 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1721 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1722 will now compute a table of multiples of the generator that
1723 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1724 faster (notably in the case of a single point multiplication,
1725 scalar * generator).
1726 [Nils Larsch, Bodo Moeller]
1728 *) IPv6 support for certificate extensions. The various extensions
1729 which use the IP:a.b.c.d can now take IPv6 addresses using the
1730 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1734 *) Added an ENGINE that implements RSA by performing private key
1735 exponentiations with the GMP library. The conversions to and from
1736 GMP's mpz_t format aren't optimised nor are any montgomery forms
1737 cached, and on x86 it appears OpenSSL's own performance has caught up.
1738 However there are likely to be other architectures where GMP could
1739 provide a boost. This ENGINE is not built in by default, but it can be
1740 specified at Configure time and should be accompanied by the necessary
1741 linker additions, eg;
1742 ./config -DOPENSSL_USE_GMP -lgmp
1745 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1746 testing availability of engines with "-t" - the old behaviour is
1747 produced by increasing the feature's verbosity with "-tt".
1750 *) ECDSA routines: under certain error conditions uninitialized BN objects
1751 could be freed. Solution: make sure initialization is performed early
1752 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1756 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1757 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1758 software implementations. For DSA and DH, parameter generation can
1759 also be overriden by providing the appropriate method callbacks.
1762 *) Change the "progress" mechanism used in key-generation and
1763 primality testing to functions that take a new BN_GENCB pointer in
1764 place of callback/argument pairs. The new API functions have "_ex"
1765 postfixes and the older functions are reimplemented as wrappers for
1766 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1767 declarations of the old functions to help (graceful) attempts to
1768 migrate to the new functions. Also, the new key-generation API
1769 functions operate on a caller-supplied key-structure and return
1770 success/failure rather than returning a key or NULL - this is to
1771 help make "keygen" another member function of RSA_METHOD etc.
1773 Example for using the new callback interface:
1775 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1779 BN_GENCB_set(&my_cb, my_callback, my_arg);
1781 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1782 /* For the meaning of a, b in calls to my_callback(), see the
1783 * documentation of the function that calls the callback.
1784 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1785 * my_callback should return 1 if it wants BN_is_prime_ex()
1786 * to continue, or 0 to stop.
1791 *) Change the ZLIB compression method to be stateful, and make it
1792 available to TLS with the number defined in
1793 draft-ietf-tls-compression-04.txt.
1796 *) Add the ASN.1 structures and functions for CertificatePair, which
1797 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1799 CertificatePair ::= SEQUENCE {
1800 forward [0] Certificate OPTIONAL,
1801 reverse [1] Certificate OPTIONAL,
1802 -- at least one of the pair shall be present -- }
1804 Also implement the PEM functions to read and write certificate
1805 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1807 This needed to be defined, mostly for the sake of the LDAP
1808 attribute crossCertificatePair, but may prove useful elsewhere as
1812 *) Make it possible to inhibit symlinking of shared libraries in
1813 Makefile.shared, for Cygwin's sake.
1816 *) Extend the BIGNUM API by creating a function
1817 void BN_set_negative(BIGNUM *a, int neg);
1818 and a macro that behave like
1819 int BN_is_negative(const BIGNUM *a);
1821 to avoid the need to access 'a->neg' directly in applications.
1824 *) Implement fast modular reduction for pseudo-Mersenne primes
1825 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1826 EC_GROUP_new_curve_GFp() will now automatically use this
1828 [Nils Larsch <nla@trustcenter.de>]
1830 *) Add new lock type (CRYPTO_LOCK_BN).
1833 *) Change the ENGINE framework to automatically load engines
1834 dynamically from specific directories unless they could be
1835 found to already be built in or loaded. Move all the
1836 current engines except for the cryptodev one to a new
1838 The engines in engines/ are built as shared libraries if
1839 the "shared" options was given to ./Configure or ./config.
1840 Otherwise, they are inserted in libcrypto.a.
1841 /usr/local/ssl/engines is the default directory for dynamic
1842 engines, but that can be overriden at configure time through
1843 the usual use of --prefix and/or --openssldir, and at run
1844 time with the environment variable OPENSSL_ENGINES.
1845 [Geoff Thorpe and Richard Levitte]
1847 *) Add Makefile.shared, a helper makefile to build shared
1848 libraries. Addapt Makefile.org.
1851 *) Add version info to Win32 DLLs.
1852 [Peter 'Luna' Runestig" <peter@runestig.com>]
1854 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1855 can be added using this API to created arbitrary PKCS#12
1856 files while avoiding the low level API.
1858 New options to PKCS12_create(), key or cert can be NULL and
1859 will then be omitted from the output file. The encryption
1860 algorithm NIDs can be set to -1 for no encryption, the mac
1861 iteration count can be set to 0 to omit the mac.
1863 Enhance pkcs12 utility by making the -nokeys and -nocerts
1864 options work when creating a PKCS#12 file. New option -nomac
1865 to omit the mac, NONE can be set for an encryption algorithm.
1866 New code is modified to use the enhanced PKCS12_create()
1867 instead of the low level API.
1870 *) Extend ASN1 encoder to support indefinite length constructed
1871 encoding. This can output sequences tags and octet strings in
1872 this form. Modify pk7_asn1.c to support indefinite length
1873 encoding. This is experimental and needs additional code to
1874 be useful, such as an ASN1 bio and some enhanced streaming
1877 Extend template encode functionality so that tagging is passed
1878 down to the template encoder.
1881 *) Let 'openssl req' fail if an argument to '-newkey' is not
1882 recognized instead of using RSA as a default.
1885 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1886 As these are not official, they are not included in "ALL";
1887 the "ECCdraft" ciphersuite group alias can be used to select them.
1888 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1890 *) Add ECDH engine support.
1891 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1893 *) Add ECDH in new directory crypto/ecdh/.
1894 [Douglas Stebila (Sun Microsystems Laboratories)]
1896 *) Let BN_rand_range() abort with an error after 100 iterations
1897 without success (which indicates a broken PRNG).
1900 *) Change BN_mod_sqrt() so that it verifies that the input value
1901 is really the square of the return value. (Previously,
1902 BN_mod_sqrt would show GIGO behaviour.)
1905 *) Add named elliptic curves over binary fields from X9.62, SECG,
1906 and WAP/WTLS; add OIDs that were still missing.
1908 [Sheueling Chang Shantz and Douglas Stebila
1909 (Sun Microsystems Laboratories)]
1911 *) Extend the EC library for elliptic curves over binary fields
1912 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1915 EC_GF2m_simple_method
1919 EC_GROUP_new_curve_GF2m
1920 EC_GROUP_set_curve_GF2m
1921 EC_GROUP_get_curve_GF2m
1922 EC_POINT_set_affine_coordinates_GF2m
1923 EC_POINT_get_affine_coordinates_GF2m
1924 EC_POINT_set_compressed_coordinates_GF2m
1926 Point compression for binary fields is disabled by default for
1927 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1930 As binary polynomials are represented as BIGNUMs, various members
1931 of the EC_GROUP and EC_POINT data structures can be shared
1932 between the implementations for prime fields and binary fields;
1933 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1934 are essentially identical to their ..._GFp counterparts.
1935 (For simplicity, the '..._GFp' prefix has been dropped from
1936 various internal method names.)
1938 An internal 'field_div' method (similar to 'field_mul' and
1939 'field_sqr') has been added; this is used only for binary fields.
1941 [Sheueling Chang Shantz and Douglas Stebila
1942 (Sun Microsystems Laboratories)]
1944 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1945 through methods ('mul', 'precompute_mult').
1947 The generic implementations (now internally called 'ec_wNAF_mul'
1948 and 'ec_wNAF_precomputed_mult') remain the default if these
1949 methods are undefined.
1951 [Sheueling Chang Shantz and Douglas Stebila
1952 (Sun Microsystems Laboratories)]
1954 *) New function EC_GROUP_get_degree, which is defined through
1955 EC_METHOD. For curves over prime fields, this returns the bit
1956 length of the modulus.
1958 [Sheueling Chang Shantz and Douglas Stebila
1959 (Sun Microsystems Laboratories)]
1961 *) New functions EC_GROUP_dup, EC_POINT_dup.
1962 (These simply call ..._new and ..._copy).
1964 [Sheueling Chang Shantz and Douglas Stebila
1965 (Sun Microsystems Laboratories)]
1967 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1968 Polynomials are represented as BIGNUMs (where the sign bit is not
1969 used) in the following functions [macros]:
1972 BN_GF2m_sub [= BN_GF2m_add]
1973 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1974 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1975 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1977 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1978 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1979 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1980 BN_GF2m_cmp [= BN_ucmp]
1982 (Note that only the 'mod' functions are actually for fields GF(2^m).
1983 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1985 For some functions, an the irreducible polynomial defining a
1986 field can be given as an 'unsigned int[]' with strictly
1987 decreasing elements giving the indices of those bits that are set;
1988 i.e., p[] represents the polynomial
1989 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1991 p[0] > p[1] > ... > p[k] = 0.
1992 This applies to the following functions:
1997 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1998 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2000 BN_GF2m_mod_sqrt_arr
2001 BN_GF2m_mod_solve_quad_arr
2005 Conversion can be performed by the following functions:
2010 bntest.c has additional tests for binary polynomial arithmetic.
2012 Two implementations for BN_GF2m_mod_div() are available.
2013 The default algorithm simply uses BN_GF2m_mod_inv() and
2014 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2015 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2016 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2018 [Sheueling Chang Shantz and Douglas Stebila
2019 (Sun Microsystems Laboratories)]
2021 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2022 functionality is disabled at compile-time.
2023 [Douglas Stebila <douglas.stebila@sun.com>]
2025 *) Change default behaviour of 'openssl asn1parse' so that more
2026 information is visible when viewing, e.g., a certificate:
2028 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2029 mode the content of non-printable OCTET STRINGs is output in a
2030 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2031 avoid the appearance of a printable string.
2032 [Nils Larsch <nla@trustcenter.de>]
2034 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2036 EC_GROUP_set_asn1_flag()
2037 EC_GROUP_get_asn1_flag()
2038 EC_GROUP_set_point_conversion_form()
2039 EC_GROUP_get_point_conversion_form()
2040 These control ASN1 encoding details:
2041 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2042 has been set to OPENSSL_EC_NAMED_CURVE.
2043 - Points are encoded in uncompressed form by default; options for
2044 asn1_for are as for point2oct, namely
2045 POINT_CONVERSION_COMPRESSED
2046 POINT_CONVERSION_UNCOMPRESSED
2047 POINT_CONVERSION_HYBRID
2049 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2052 EC_GROUP_get0_seed()
2053 EC_GROUP_get_seed_len()
2054 This is used only for ASN1 purposes (so far).
2055 [Nils Larsch <nla@trustcenter.de>]
2057 *) Add 'field_type' member to EC_METHOD, which holds the NID
2058 of the appropriate field type OID. The new function
2059 EC_METHOD_get_field_type() returns this value.
2060 [Nils Larsch <nla@trustcenter.de>]
2065 EC_POINT_point2hex()
2066 EC_POINT_hex2point()
2067 providing useful interfaces to EC_POINT_point2oct() and
2068 EC_POINT_oct2point().
2069 [Nils Larsch <nla@trustcenter.de>]
2071 *) Change internals of the EC library so that the functions
2072 EC_GROUP_set_generator()
2073 EC_GROUP_get_generator()
2074 EC_GROUP_get_order()
2075 EC_GROUP_get_cofactor()
2076 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2077 to methods, which would lead to unnecessary code duplication when
2078 adding different types of curves.
2079 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2081 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2082 arithmetic, and such that modified wNAFs are generated
2083 (which avoid length expansion in many cases).
2086 *) Add a function EC_GROUP_check_discriminant() (defined via
2087 EC_METHOD) that verifies that the curve discriminant is non-zero.
2089 Add a function EC_GROUP_check() that makes some sanity tests
2090 on a EC_GROUP, its generator and order. This includes
2091 EC_GROUP_check_discriminant().
2092 [Nils Larsch <nla@trustcenter.de>]
2094 *) Add ECDSA in new directory crypto/ecdsa/.
2096 Add applications 'openssl ecparam' and 'openssl ecdsa'
2097 (these are based on 'openssl dsaparam' and 'openssl dsa').
2099 ECDSA support is also included in various other files across the
2100 library. Most notably,
2101 - 'openssl req' now has a '-newkey ecdsa:file' option;
2102 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2103 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2104 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2105 them suitable for ECDSA where domain parameters must be
2106 extracted before the specific public key;
2107 - ECDSA engine support has been added.
2108 [Nils Larsch <nla@trustcenter.de>]
2110 *) Include some named elliptic curves, and add OIDs from X9.62,
2111 SECG, and WAP/WTLS. Each curve can be obtained from the new
2113 EC_GROUP_new_by_curve_name(),
2114 and the list of available named curves can be obtained with
2115 EC_get_builtin_curves().
2116 Also add a 'curve_name' member to EC_GROUP objects, which can be
2118 EC_GROUP_set_curve_name()
2119 EC_GROUP_get_curve_name()
2120 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2122 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2123 was actually never needed) and in BN_mul(). The removal in BN_mul()
2124 required a small change in bn_mul_part_recursive() and the addition
2125 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2126 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2127 bn_sub_words() and bn_add_words() except they take arrays with
2131 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2133 *) Cleanse PEM buffers before freeing them since they may contain
2135 [Benjamin Bennett <ben@psc.edu>]
2137 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2138 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2139 authentication-only ciphersuites.
2142 *) Since AES128 and AES256 share a single mask bit in the logic of
2143 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2144 kludge to work properly if AES128 is available and AES256 isn't.
2147 *) Expand security boundary to match 1.1.1 module.
2150 *) Remove redundant features: hash file source, editing of test vectors
2151 modify fipsld to use external fips_premain.c signature.
2154 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2155 run algorithm test programs.
2158 *) Make algorithm test programs more tolerant of whitespace.
2161 *) Have SSL/TLS server implementation tolerate "mismatched" record
2162 protocol version while receiving ClientHello even if the
2163 ClientHello is fragmented. (The server can't insist on the
2164 particular protocol version it has chosen before the ServerHello
2165 message has informed the client about his choice.)
2168 *) Load error codes if they are not already present instead of using a
2169 static variable. This allows them to be cleanly unloaded and reloaded.
2172 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2174 *) Introduce limits to prevent malicious keys being able to
2175 cause a denial of service. (CVE-2006-2940)
2176 [Steve Henson, Bodo Moeller]
2178 *) Fix ASN.1 parsing of certain invalid structures that can result
2179 in a denial of service. (CVE-2006-2937) [Steve Henson]
2181 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2182 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2184 *) Fix SSL client code which could crash if connecting to a
2185 malicious SSLv2 server. (CVE-2006-4343)
2186 [Tavis Ormandy and Will Drewry, Google Security Team]
2188 *) Change ciphersuite string processing so that an explicit
2189 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2190 will no longer include "AES128-SHA"), and any other similar
2191 ciphersuite (same bitmap) from *other* protocol versions (so that
2192 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2193 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2194 changes from 0.9.8b and 0.9.8d.
2197 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2199 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2200 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2202 *) Change the Unix randomness entropy gathering to use poll() when
2203 possible instead of select(), since the latter has some
2204 undesirable limitations.
2205 [Darryl Miles via Richard Levitte and Bodo Moeller]
2207 *) Disable rogue ciphersuites:
2209 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2210 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2211 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2213 The latter two were purportedly from
2214 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2217 Also deactive the remaining ciphersuites from
2218 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2219 unofficial, and the ID has long expired.
2222 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2223 dual-core machines) and other potential thread-safety issues.
2226 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2228 *) Adapt fipsld and the build system to link against the validated FIPS
2229 module in FIPS mode.
2232 *) Fixes for VC++ 2005 build under Windows.
2235 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2236 from a Windows bash shell such as MSYS. It is autodetected from the
2237 "config" script when run from a VC++ environment. Modify standard VC++
2238 build to use fipscanister.o from the GNU make build.
2241 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2243 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2244 The value now differs depending on if you build for FIPS or not.
2245 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2246 safely run with a non-FIPSed libcrypto, as it may crash because of
2247 the difference induced by this change.
2250 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2252 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2253 (part of SSL_OP_ALL). This option used to disable the
2254 countermeasure against man-in-the-middle protocol-version
2255 rollback in the SSL 2.0 server implementation, which is a bad
2256 idea. (CVE-2005-2969)
2258 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2259 for Information Security, National Institute of Advanced Industrial
2260 Science and Technology [AIST], Japan)]
2262 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2263 mainly for FIPS compliance and not fully integrated at this stage.
2266 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2267 the exponentiation using a fixed-length exponent. (Otherwise,
2268 the information leaked through timing could expose the secret key
2269 after many signatures; cf. Bleichenbacher's attack on DSA with
2273 *) Make a new fixed-window mod_exp implementation the default for
2274 RSA, DSA, and DH private-key operations so that the sequence of
2275 squares and multiplies and the memory access pattern are
2276 independent of the particular secret key. This will mitigate
2277 cache-timing and potential related attacks.
2279 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2280 and this is automatically used by BN_mod_exp_mont() if the new flag
2281 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2282 will use this BN flag for private exponents unless the flag
2283 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2284 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2286 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2288 *) Change the client implementation for SSLv23_method() and
2289 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2290 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2291 (Previously, the SSL 2.0 backwards compatible Client Hello
2292 message format would be used even with SSL_OP_NO_SSLv2.)
2295 *) Add support for smime-type MIME parameter in S/MIME messages which some
2299 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2300 a threadsafe manner. Modify rsa code to use new function and add calls
2301 to dsa and dh code (which had race conditions before).
2304 *) Include the fixed error library code in the C error file definitions
2305 instead of fixing them up at runtime. This keeps the error code
2306 structures constant.
2309 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2311 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2314 *) Fixes for newer kerberos headers. NB: the casts are needed because
2315 the 'length' field is signed on one version and unsigned on another
2316 with no (?) obvious way to tell the difference, without these VC++
2317 complains. Also the "definition" of FAR (blank) is no longer included
2318 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2319 some needed definitions.
2322 *) Undo Cygwin change.
2325 *) Added support for proxy certificates according to RFC 3820.
2326 Because they may be a security thread to unaware applications,
2327 they must be explicitely allowed in run-time. See
2328 docs/HOWTO/proxy_certificates.txt for further information.
2331 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2333 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2334 server and client random values. Previously
2335 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2336 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2338 This change has negligible security impact because:
2340 1. Server and client random values still have 24 bytes of pseudo random
2343 2. Server and client random values are sent in the clear in the initial
2346 3. The master secret is derived using the premaster secret (48 bytes in
2347 size for static RSA ciphersuites) as well as client server and random
2350 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2353 [Stephen Henson, reported by UK NISCC]
2355 *) Use Windows randomness collection on Cygwin.
2358 *) Fix hang in EGD/PRNGD query when communication socket is closed
2359 prematurely by EGD/PRNGD.
2360 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2362 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2365 *) Back-port of selected performance improvements from development
2366 branch, as well as improved support for PowerPC platforms.
2369 *) Add lots of checks for memory allocation failure, error codes to indicate
2370 failure and freeing up memory if a failure occurs.
2371 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2373 *) Add new -passin argument to dgst.
2376 *) Perform some character comparisons of different types in X509_NAME_cmp:
2377 this is needed for some certificates that reencode DNs into UTF8Strings
2378 (in violation of RFC3280) and can't or wont issue name rollover
2382 *) Make an explicit check during certificate validation to see that
2383 the CA setting in each certificate on the chain is correct. As a
2384 side effect always do the following basic checks on extensions,
2385 not just when there's an associated purpose to the check:
2387 - if there is an unhandled critical extension (unless the user
2388 has chosen to ignore this fault)
2389 - if the path length has been exceeded (if one is set at all)
2390 - that certain extensions fit the associated purpose (if one has
2394 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2396 *) Avoid a race condition when CRLs are checked in a multi threaded
2397 environment. This would happen due to the reordering of the revoked
2398 entries during signature checking and serial number lookup. Now the
2399 encoding is cached and the serial number sort performed under a lock.
2400 Add new STACK function sk_is_sorted().
2403 *) Add Delta CRL to the extension code.
2406 *) Various fixes to s3_pkt.c so alerts are sent properly.
2407 [David Holmes <d.holmes@f5.com>]
2409 *) Reduce the chances of duplicate issuer name and serial numbers (in
2410 violation of RFC3280) using the OpenSSL certificate creation utilities.
2411 This is done by creating a random 64 bit value for the initial serial
2412 number when a serial number file is created or when a self signed
2413 certificate is created using 'openssl req -x509'. The initial serial
2414 number file is created using 'openssl x509 -next_serial' in CA.pl
2415 rather than being initialized to 1.
2418 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2420 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2421 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2422 [Joe Orton, Steve Henson]
2424 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2426 [Joe Orton, Steve Henson]
2428 *) Make it possible to have multiple active certificates with the same
2429 subject in the CA index file. This is done only if the keyword
2430 'unique_subject' is set to 'no' in the main CA section (default
2431 if 'CA_default') of the configuration file. The value is saved
2432 with the database itself in a separate index attribute file,
2433 named like the index file with '.attr' appended to the name.
2436 *) X509 verify fixes. Disable broken certificate workarounds when
2437 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2438 keyUsage extension present. Don't accept CRLs with unhandled critical
2439 extensions: since verify currently doesn't process CRL extensions this
2440 rejects a CRL with *any* critical extensions. Add new verify error codes
2444 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2445 A clarification of RFC2560 will require the use of OCTET STRINGs and
2446 some implementations cannot handle the current raw format. Since OpenSSL
2447 copies and compares OCSP nonces as opaque blobs without any attempt at
2448 parsing them this should not create any compatibility issues.
2451 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2452 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2453 this HMAC (and other) operations are several times slower than OpenSSL
2457 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2458 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2460 *) Use the correct content when signing type "other".
2463 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2465 *) Fix various bugs revealed by running the NISCC test suite:
2467 Stop out of bounds reads in the ASN1 code when presented with
2468 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2470 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2472 If verify callback ignores invalid public key errors don't try to check
2473 certificate signature with the NULL public key.
2477 *) New -ignore_err option in ocsp application to stop the server
2478 exiting on the first error in a request.
2481 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2482 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2486 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2487 extra data after the compression methods not only for TLS 1.0
2488 but also for SSL 3.0 (as required by the specification).
2489 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2491 *) Change X509_certificate_type() to mark the key as exported/exportable
2492 when it's 512 *bits* long, not 512 bytes.
2495 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2496 blocks during encryption.
2499 *) Various fixes to base64 BIO and non blocking I/O. On write
2500 flushes were not handled properly if the BIO retried. On read
2501 data was not being buffered properly and had various logic bugs.
2502 This also affects blocking I/O when the data being decoded is a
2506 *) Various S/MIME bugfixes and compatibility changes:
2507 output correct application/pkcs7 MIME type if
2508 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2509 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2510 of files as .eml work). Correctly handle very long lines in MIME
2514 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2516 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2517 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2518 a protocol version number mismatch like a decryption error
2519 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2522 *) Turn on RSA blinding by default in the default implementation
2523 to avoid a timing attack. Applications that don't want it can call
2524 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2525 They would be ill-advised to do so in most cases.
2526 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2528 *) Change RSA blinding code so that it works when the PRNG is not
2529 seeded (in this case, the secret RSA exponent is abused as
2530 an unpredictable seed -- if it is not unpredictable, there
2531 is no point in blinding anyway). Make RSA blinding thread-safe
2532 by remembering the creator's thread ID in rsa->blinding and
2533 having all other threads use local one-time blinding factors
2534 (this requires more computation than sharing rsa->blinding, but
2535 avoids excessive locking; and if an RSA object is not shared
2536 between threads, blinding will still be very fast).
2539 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2540 ENGINE as defaults for all supported algorithms irrespective of
2541 the 'flags' parameter. 'flags' is now honoured, so applications
2542 should make sure they are passing it correctly.
2545 *) Target "mingw" now allows native Windows code to be generated in
2546 the Cygwin environment as well as with the MinGW compiler.
2549 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2551 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2552 via timing by performing a MAC computation even if incorrrect
2553 block cipher padding has been found. This is a countermeasure
2554 against active attacks where the attacker has to distinguish
2555 between bad padding and a MAC verification error. (CVE-2003-0078)
2557 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2558 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2559 Martin Vuagnoux (EPFL, Ilion)]
2561 *) Make the no-err option work as intended. The intention with no-err
2562 is not to have the whole error stack handling routines removed from
2563 libcrypto, it's only intended to remove all the function name and
2564 reason texts, thereby removing some of the footprint that may not
2565 be interesting if those errors aren't displayed anyway.
2567 NOTE: it's still possible for any application or module to have it's
2568 own set of error texts inserted. The routines are there, just not
2569 used by default when no-err is given.
2572 *) Add support for FreeBSD on IA64.
2573 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2575 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2576 Kerberos function mit_des_cbc_cksum(). Before this change,
2577 the value returned by DES_cbc_cksum() was like the one from
2578 mit_des_cbc_cksum(), except the bytes were swapped.
2579 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2581 *) Allow an application to disable the automatic SSL chain building.
2582 Before this a rather primitive chain build was always performed in
2583 ssl3_output_cert_chain(): an application had no way to send the
2584 correct chain if the automatic operation produced an incorrect result.
2586 Now the chain builder is disabled if either:
2588 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2590 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2592 The reasoning behind this is that an application would not want the
2593 auto chain building to take place if extra chain certificates are
2594 present and it might also want a means of sending no additional
2595 certificates (for example the chain has two certificates and the
2599 *) Add the possibility to build without the ENGINE framework.
2600 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2602 *) Under Win32 gmtime() can return NULL: check return value in
2603 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2606 *) DSA routines: under certain error conditions uninitialized BN objects
2607 could be freed. Solution: make sure initialization is performed early
2608 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2609 Nils Larsch <nla@trustcenter.de> via PR#459)
2612 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2613 checked on reconnect on the client side, therefore session resumption
2614 could still fail with a "ssl session id is different" error. This
2615 behaviour is masked when SSL_OP_ALL is used due to
2616 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2617 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2618 followup to PR #377.
2621 *) IA-32 assembler support enhancements: unified ELF targets, support
2622 for SCO/Caldera platforms, fix for Cygwin shared build.
2625 *) Add support for FreeBSD on sparc64. As a consequence, support for
2626 FreeBSD on non-x86 processors is separate from x86 processors on
2627 the config script, much like the NetBSD support.
2628 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2630 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2632 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2635 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2636 code (06) was taken as the first octet of the session ID and the last
2637 octet was ignored consequently. As a result SSLv2 client side session
2638 caching could not have worked due to the session ID mismatch between
2640 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2644 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2645 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2649 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2650 seems that in spite of existing for more than a year, many application
2651 author have done nothing to provide the necessary callbacks, which
2652 means that this particular engine will not work properly anywhere.
2653 This is a very unfortunate situation which forces us, in the name
2654 of usability, to give the hw_ncipher.c a static lock, which is part
2656 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2657 appear in 0.9.8 or later. We EXPECT application authors to have
2658 dealt properly with this when 0.9.8 is released (unless we actually
2659 make such changes in the libcrypto locking code that changes will
2660 have to be made anyway).
2663 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2664 octets have been read, EOF or an error occurs. Without this change
2665 some truncated ASN1 structures will not produce an error.
2668 *) Disable Heimdal support, since it hasn't been fully implemented.
2669 Still give the possibility to force the use of Heimdal, but with
2670 warnings and a request that patches get sent to openssl-dev.
2673 *) Add the VC-CE target, introduce the WINCE sysname, and add
2674 INSTALL.WCE and appropriate conditionals to make it build.
2675 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2677 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2678 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2679 edit numbers of the version.
2680 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2682 *) Introduce safe string copy and catenation functions
2683 (BUF_strlcpy() and BUF_strlcat()).
2684 [Ben Laurie (CHATS) and Richard Levitte]
2686 *) Avoid using fixed-size buffers for one-line DNs.
2687 [Ben Laurie (CHATS)]
2689 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2690 resizing buffers containing secrets, and use where appropriate.
2691 [Ben Laurie (CHATS)]
2693 *) Avoid using fixed size buffers for configuration file location.
2694 [Ben Laurie (CHATS)]
2696 *) Avoid filename truncation for various CA files.
2697 [Ben Laurie (CHATS)]
2699 *) Use sizeof in preference to magic numbers.
2700 [Ben Laurie (CHATS)]
2702 *) Avoid filename truncation in cert requests.
2703 [Ben Laurie (CHATS)]
2705 *) Add assertions to check for (supposedly impossible) buffer
2707 [Ben Laurie (CHATS)]
2709 *) Don't cache truncated DNS entries in the local cache (this could
2710 potentially lead to a spoofing attack).
2711 [Ben Laurie (CHATS)]
2713 *) Fix various buffers to be large enough for hex/decimal
2714 representations in a platform independent manner.
2715 [Ben Laurie (CHATS)]
2717 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2718 resizing buffers containing secrets, and use where appropriate.
2719 [Ben Laurie (CHATS)]
2721 *) Add BIO_indent() to avoid much slightly worrying code to do
2723 [Ben Laurie (CHATS)]
2725 *) Convert sprintf()/BIO_puts() to BIO_printf().
2726 [Ben Laurie (CHATS)]
2728 *) buffer_gets() could terminate with the buffer only half
2730 [Ben Laurie (CHATS)]
2732 *) Add assertions to prevent user-supplied crypto functions from
2733 overflowing internal buffers by having large block sizes, etc.
2734 [Ben Laurie (CHATS)]
2736 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2738 [Ben Laurie (CHATS)]
2740 *) Eliminate unused copy of key in RC4.
2741 [Ben Laurie (CHATS)]
2743 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2744 [Ben Laurie (CHATS)]
2746 *) Fix off-by-one error in EGD path.
2747 [Ben Laurie (CHATS)]
2749 *) If RANDFILE path is too long, ignore instead of truncating.
2750 [Ben Laurie (CHATS)]
2752 *) Eliminate unused and incorrectly sized X.509 structure
2754 [Ben Laurie (CHATS)]
2756 *) Eliminate unused and dangerous function knumber().
2757 [Ben Laurie (CHATS)]
2759 *) Eliminate unused and dangerous structure, KSSL_ERR.
2760 [Ben Laurie (CHATS)]
2762 *) Protect against overlong session ID context length in an encoded
2763 session object. Since these are local, this does not appear to be
2765 [Ben Laurie (CHATS)]
2767 *) Change from security patch (see 0.9.6e below) that did not affect
2768 the 0.9.6 release series:
2770 Remote buffer overflow in SSL3 protocol - an attacker could
2771 supply an oversized master key in Kerberos-enabled versions.
2773 [Ben Laurie (CHATS)]
2775 *) Change the SSL kerb5 codes to match RFC 2712.
2778 *) Make -nameopt work fully for req and add -reqopt switch.
2779 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2781 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2782 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2784 *) Make sure tests can be performed even if the corresponding algorithms
2785 have been removed entirely. This was also the last step to make
2786 OpenSSL compilable with DJGPP under all reasonable conditions.
2787 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2789 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2790 to allow version independent disabling of normally unselected ciphers,
2791 which may be activated as a side-effect of selecting a single cipher.
2793 (E.g., cipher list string "RSA" enables ciphersuites that are left
2794 out of "ALL" because they do not provide symmetric encryption.
2795 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2796 [Lutz Jaenicke, Bodo Moeller]
2798 *) Add appropriate support for separate platform-dependent build
2799 directories. The recommended way to make a platform-dependent
2800 build directory is the following (tested on Linux), maybe with
2803 # Place yourself outside of the OpenSSL source tree. In
2804 # this example, the environment variable OPENSSL_SOURCE
2805 # is assumed to contain the absolute OpenSSL source directory.
2806 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2807 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2808 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2809 mkdir -p `dirname $F`
2810 ln -s $OPENSSL_SOURCE/$F $F
2813 To be absolutely sure not to disturb the source tree, a "make clean"
2814 is a good thing. If it isn't successfull, don't worry about it,
2815 it probably means the source directory is very clean.
2818 *) Make sure any ENGINE control commands make local copies of string
2819 pointers passed to them whenever necessary. Otherwise it is possible
2820 the caller may have overwritten (or deallocated) the original string
2821 data when a later ENGINE operation tries to use the stored values.
2822 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2824 *) Improve diagnostics in file reading and command-line digests.
2825 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2827 *) Add AES modes CFB and OFB to the object database. Correct an
2828 error in AES-CFB decryption.
2831 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2832 allows existing EVP_CIPHER_CTX structures to be reused after
2833 calling EVP_*Final(). This behaviour is used by encryption
2834 BIOs and some applications. This has the side effect that
2835 applications must explicitly clean up cipher contexts with
2836 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2839 *) Check the values of dna and dnb in bn_mul_recursive before calling
2840 bn_mul_comba (a non zero value means the a or b arrays do not contain
2841 n2 elements) and fallback to bn_mul_normal if either is not zero.
2844 *) Fix escaping of non-ASCII characters when using the -subj option
2845 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2848 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2849 form for "surname", serialNumber has no short form.
2850 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2851 therefore remove "mail" short name for "internet 7".
2852 The OID for unique identifiers in X509 certificates is
2853 x500UniqueIdentifier, not uniqueIdentifier.
2854 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2857 *) Add an "init" command to the ENGINE config module and auto initialize
2858 ENGINEs. Without any "init" command the ENGINE will be initialized
2859 after all ctrl commands have been executed on it. If init=1 the
2860 ENGINE is initailized at that point (ctrls before that point are run
2861 on the uninitialized ENGINE and after on the initialized one). If
2862 init=0 then the ENGINE will not be iniatialized at all.
2865 *) Fix the 'app_verify_callback' interface so that the user-defined
2866 argument is actually passed to the callback: In the
2867 SSL_CTX_set_cert_verify_callback() prototype, the callback
2868 declaration has been changed from
2871 int (*cb)(X509_STORE_CTX *,void *);
2872 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2873 i=s->ctx->app_verify_callback(&ctx)
2874 has been changed into
2875 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2877 To update applications using SSL_CTX_set_cert_verify_callback(),
2878 a dummy argument can be added to their callback functions.
2879 [D. K. Smetters <smetters@parc.xerox.com>]
2881 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2882 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2884 *) Add and OPENSSL_LOAD_CONF define which will cause
2885 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2886 This allows older applications to transparently support certain
2887 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2888 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2889 load the config file and OPENSSL_add_all_algorithms_conf() which will
2890 always load it have also been added.
2893 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2894 Adjust NIDs and EVP layer.
2895 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2897 *) Config modules support in openssl utility.
2899 Most commands now load modules from the config file,
2900 though in a few (such as version) this isn't done
2901 because it couldn't be used for anything.
2903 In the case of ca and req the config file used is
2904 the same as the utility itself: that is the -config
2905 command line option can be used to specify an
2909 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2910 use "openssl_conf" if filename is NULL use default openssl config file.
2913 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2914 config section name. Add a new flag to tolerate a missing config file
2915 and move code to CONF_modules_load_file().
2918 *) Support for crypto accelerator cards from Accelerated Encryption
2919 Processing, www.aep.ie. (Use engine 'aep')
2920 The support was copied from 0.9.6c [engine] and adapted/corrected
2921 to work with the new engine framework.
2922 [AEP Inc. and Richard Levitte]
2924 *) Support for SureWare crypto accelerator cards from Baltimore
2925 Technologies. (Use engine 'sureware')
2926 The support was copied from 0.9.6c [engine] and adapted
2927 to work with the new engine framework.
2930 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2931 make the newer ENGINE framework commands for the CHIL engine work.
2932 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2934 *) Make it possible to produce shared libraries on ReliantUNIX.
2935 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2937 *) Add the configuration target debug-linux-ppro.
2938 Make 'openssl rsa' use the general key loading routines
2939 implemented in apps.c, and make those routines able to
2940 handle the key format FORMAT_NETSCAPE and the variant
2942 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2944 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2945 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2947 *) Add -keyform to rsautl, and document -engine.
2948 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2950 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2951 BIO_R_NO_SUCH_FILE error code rather than the generic
2952 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2955 *) Add new functions
2957 ERR_peek_last_error_line
2958 ERR_peek_last_error_line_data.
2959 These are similar to
2962 ERR_peek_error_line_data,
2963 but report on the latest error recorded rather than the first one
2964 still in the error queue.
2965 [Ben Laurie, Bodo Moeller]
2967 *) default_algorithms option in ENGINE config module. This allows things
2969 default_algorithms = ALL
2970 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2973 *) Prelminary ENGINE config module.
2976 *) New experimental application configuration code.
2979 *) Change the AES code to follow the same name structure as all other
2980 symmetric ciphers, and behave the same way. Move everything to
2981 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2982 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2984 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2985 [Ben Laurie and Theo de Raadt]
2987 *) Add option to output public keys in req command.
2988 [Massimiliano Pala madwolf@openca.org]
2990 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2991 (up to about 10% better than before for P-192 and P-224).
2994 *) New functions/macros
2996 SSL_CTX_set_msg_callback(ctx, cb)
2997 SSL_CTX_set_msg_callback_arg(ctx, arg)
2998 SSL_set_msg_callback(ssl, cb)
2999 SSL_set_msg_callback_arg(ssl, arg)
3001 to request calling a callback function
3003 void cb(int write_p, int version, int content_type,
3004 const void *buf, size_t len, SSL *ssl, void *arg)
3006 whenever a protocol message has been completely received
3007 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3008 protocol version according to which the SSL library interprets
3009 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3010 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3011 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3012 specification (change_cipher_spec(20), alert(21), handshake(22)).
3013 'buf' and 'len' point to the actual message, 'ssl' to the
3014 SSL object, and 'arg' is the application-defined value set by
3015 SSL[_CTX]_set_msg_callback_arg().
3017 'openssl s_client' and 'openssl s_server' have new '-msg' options
3018 to enable a callback that displays all protocol messages.
3021 *) Change the shared library support so shared libraries are built as
3022 soon as the corresponding static library is finished, and thereby get
3023 openssl and the test programs linked against the shared library.
3024 This still only happens when the keyword "shard" has been given to
3025 the configuration scripts.
3027 NOTE: shared library support is still an experimental thing, and
3028 backward binary compatibility is still not guaranteed.
3029 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3031 *) Add support for Subject Information Access extension.
3032 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3034 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3035 additional bytes when new memory had to be allocated, not just
3036 when reusing an existing buffer.
3039 *) New command line and configuration option 'utf8' for the req command.
3040 This allows field values to be specified as UTF8 strings.
3043 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3044 runs for the former and machine-readable output for the latter.
3047 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3048 of the e-mail address in the DN (i.e., it will go into a certificate
3049 extension only). The new configuration file option 'email_in_dn = no'
3050 has the same effect.
3051 [Massimiliano Pala madwolf@openca.org]
3053 *) Change all functions with names starting with des_ to be starting
3054 with DES_ instead. Add wrappers that are compatible with libdes,
3055 but are named _ossl_old_des_*. Finally, add macros that map the
3056 des_* symbols to the corresponding _ossl_old_des_* if libdes
3057 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3058 desired, the des_* symbols will be mapped to DES_*, with one
3061 Since we provide two compatibility mappings, the user needs to
3062 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3063 compatibility is desired. The default (i.e., when that macro
3064 isn't defined) is OpenSSL 0.9.6c compatibility.
3066 There are also macros that enable and disable the support of old
3067 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3068 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3069 are defined, the default will apply: to support the old des routines.
3071 In either case, one must include openssl/des.h to get the correct
3072 definitions. Do not try to just include openssl/des_old.h, that
3075 NOTE: This is a major break of an old API into a new one. Software
3076 authors are encouraged to switch to the DES_ style functions. Some
3077 time in the future, des_old.h and the libdes compatibility functions
3078 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3079 default), and then completely removed.
3082 *) Test for certificates which contain unsupported critical extensions.
3083 If such a certificate is found during a verify operation it is
3084 rejected by default: this behaviour can be overridden by either
3085 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3086 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3087 X509_supported_extension() has also been added which returns 1 if a
3088 particular extension is supported.
3091 *) Modify the behaviour of EVP cipher functions in similar way to digests
3092 to retain compatibility with existing code.
3095 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3096 compatibility with existing code. In particular the 'ctx' parameter does
3097 not have to be to be initialized before the call to EVP_DigestInit() and
3098 it is tidied up after a call to EVP_DigestFinal(). New function
3099 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3100 EVP_MD_CTX_copy() changed to not require the destination to be
3101 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3102 requires the destination to be valid.
3104 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3105 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3108 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3109 so that complete 'Handshake' protocol structures are kept in memory
3110 instead of overwriting 'msg_type' and 'length' with 'body' data.
3113 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3114 [Massimo Santin via Richard Levitte]
3116 *) Major restructuring to the underlying ENGINE code. This includes
3117 reduction of linker bloat, separation of pure "ENGINE" manipulation
3118 (initialisation, etc) from functionality dealing with implementations
3119 of specific crypto iterfaces. This change also introduces integrated
3120 support for symmetric ciphers and digest implementations - so ENGINEs
3121 can now accelerate these by providing EVP_CIPHER and EVP_MD
3122 implementations of their own. This is detailed in crypto/engine/README
3123 as it couldn't be adequately described here. However, there are a few
3124 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3125 were changed in the original introduction of ENGINE code have now
3126 reverted back - the hooking from this code to ENGINE is now a good
3127 deal more passive and at run-time, operations deal directly with
3128 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3129 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3130 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3131 they were not being used by the framework as there is no concept of a
3132 BIGNUM_METHOD and they could not be generalised to the new
3133 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3134 ENGINE_cpy() has been removed as it cannot be consistently defined in
3138 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3141 *) Change mkdef.pl to sort symbols that get the same entry number,
3142 and make sure the automatically generated functions ERR_load_*
3143 become part of libeay.num as well.
3146 *) New function SSL_renegotiate_pending(). This returns true once
3147 renegotiation has been requested (either SSL_renegotiate() call
3148 or HelloRequest/ClientHello receveived from the peer) and becomes
3149 false once a handshake has been completed.
3150 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3151 sends a HelloRequest, but does not ensure that a handshake takes
3152 place. SSL_renegotiate_pending() is useful for checking if the
3153 client has followed the request.)
3156 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3157 By default, clients may request session resumption even during
3158 renegotiation (if session ID contexts permit); with this option,
3159 session resumption is possible only in the first handshake.
3161 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3162 more bits available for options that should not be part of
3163 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3166 *) Add some demos for certificate and certificate request creation.
3169 *) Make maximum certificate chain size accepted from the peer application
3170 settable (SSL*_get/set_max_cert_list()), as proposed by
3171 "Douglas E. Engert" <deengert@anl.gov>.
3174 *) Add support for shared libraries for Unixware-7
3175 (Boyd Lynn Gerber <gerberb@zenez.com>).
3178 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3179 be done prior to destruction. Use this to unload error strings from
3180 ENGINEs that load their own error strings. NB: This adds two new API
3181 functions to "get" and "set" this destroy handler in an ENGINE.
3184 *) Alter all existing ENGINE implementations (except "openssl" and
3185 "openbsd") to dynamically instantiate their own error strings. This
3186 makes them more flexible to be built both as statically-linked ENGINEs
3187 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3188 Also, add stub code to each that makes building them as self-contained
3189 shared-libraries easier (see README.ENGINE).
3192 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3193 implementations into applications that are completely implemented in
3194 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3195 commands that can be used to configure what shared-library to load and
3196 to control aspects of the way it is handled. Also, made an update to
3197 the README.ENGINE file that brings its information up-to-date and
3198 provides some information and instructions on the "dynamic" ENGINE
3199 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3202 *) Make it possible to unload ranges of ERR strings with a new
3203 "ERR_unload_strings" function.
3206 *) Add a copy() function to EVP_MD.
3209 *) Make EVP_MD routines take a context pointer instead of just the
3210 md_data void pointer.
3213 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3214 that the digest can only process a single chunk of data
3215 (typically because it is provided by a piece of
3216 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3217 is only going to provide a single chunk of data, and hence the
3218 framework needn't accumulate the data for oneshot drivers.
3221 *) As with "ERR", make it possible to replace the underlying "ex_data"
3222 functions. This change also alters the storage and management of global
3223 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3224 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3225 index counters. The API functions that use this state have been changed
3226 to take a "class_index" rather than pointers to the class's local STACK
3227 and counter, and there is now an API function to dynamically create new
3228 classes. This centralisation allows us to (a) plug a lot of the
3229 thread-safety problems that existed, and (b) makes it possible to clean
3230 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3231 such data would previously have always leaked in application code and
3232 workarounds were in place to make the memory debugging turn a blind eye
3233 to it. Application code that doesn't use this new function will still
3234 leak as before, but their memory debugging output will announce it now
3235 rather than letting it slide.
3237 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3238 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3239 has a return value to indicate success or failure.
3242 *) Make it possible to replace the underlying "ERR" functions such that the
3243 global state (2 LHASH tables and 2 locks) is only used by the "default"
3244 implementation. This change also adds two functions to "get" and "set"
3245 the implementation prior to it being automatically set the first time
3246 any other ERR function takes place. Ie. an application can call "get",
3247 pass the return value to a module it has just loaded, and that module
3248 can call its own "set" function using that value. This means the
3249 module's "ERR" operations will use (and modify) the error state in the
3250 application and not in its own statically linked copy of OpenSSL code.
3253 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3254 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3255 the operation, and provides a more encapsulated way for external code
3256 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3257 to use these functions rather than manually incrementing the counts.
3259 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3262 *) Add EVP test program.
3265 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3268 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3269 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3270 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3271 These allow a CRL to be built without having to access X509_CRL fields
3272 directly. Modify 'ca' application to use new functions.
3275 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3276 bug workarounds. Rollback attack detection is a security feature.
3277 The problem will only arise on OpenSSL servers when TLSv1 is not
3278 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3279 Software authors not wanting to support TLSv1 will have special reasons
3280 for their choice and can explicitly enable this option.
3281 [Bodo Moeller, Lutz Jaenicke]
3283 *) Rationalise EVP so it can be extended: don't include a union of
3284 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3285 (similar to those existing for EVP_CIPHER_CTX).
3290 EVP_MD_CTX_init(&md); /* new function call */
3291 EVP_DigestInit(&md, EVP_sha1());
3292 EVP_DigestUpdate(&md, in, len);
3293 EVP_DigestFinal(&md, out, NULL);
3294 EVP_MD_CTX_cleanup(&md); /* new function call */
3298 *) Make DES key schedule conform to the usual scheme, as well as
3299 correcting its structure. This means that calls to DES functions
3300 now have to pass a pointer to a des_key_schedule instead of a
3301 plain des_key_schedule (which was actually always a pointer
3304 des_key_schedule ks;
3306 des_set_key_checked(..., &ks);
3307 des_ncbc_encrypt(..., &ks, ...);
3309 (Note that a later change renames 'des_...' into 'DES_...'.)
3312 *) Initial reduction of linker bloat: the use of some functions, such as
3313 PEM causes large amounts of unused functions to be linked in due to
3314 poor organisation. For example pem_all.c contains every PEM function
3315 which has a knock on effect of linking in large amounts of (unused)
3316 ASN1 code. Grouping together similar functions and splitting unrelated
3317 functions prevents this.
3320 *) Cleanup of EVP macros.
3323 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3324 correct _ecb suffix.
3327 *) Add initial OCSP responder support to ocsp application. The
3328 revocation information is handled using the text based index
3329 use by the ca application. The responder can either handle
3330 requests generated internally, supplied in files (for example
3331 via a CGI script) or using an internal minimal server.
3334 *) Add configuration choices to get zlib compression for TLS.
3337 *) Changes to Kerberos SSL for RFC 2712 compliance:
3338 1. Implemented real KerberosWrapper, instead of just using
3339 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3340 2. Implemented optional authenticator field of KerberosWrapper.
3342 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3343 and authenticator structs; see crypto/krb5/.
3345 Generalized Kerberos calls to support multiple Kerberos libraries.
3346 [Vern Staats <staatsvr@asc.hpc.mil>,
3347 Jeffrey Altman <jaltman@columbia.edu>
3348 via Richard Levitte]
3350 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3351 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3352 values for each of the key sizes rather than having just
3353 parameters (and 'speed' generating keys each time).
3356 *) Speed up EVP routines.
3359 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3360 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3361 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3362 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3364 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3365 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3366 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3369 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3371 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3374 *) Added the OS2-EMX target.
3375 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3377 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3378 to support NCONF routines in extension code. New function CONF_set_nconf()
3379 to allow functions which take an NCONF to also handle the old LHASH
3380 structure: this means that the old CONF compatible routines can be
3381 retained (in particular wrt extensions) without having to duplicate the
3382 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3385 *) Enhance the general user interface with mechanisms for inner control
3386 and with possibilities to have yes/no kind of prompts.
3389 *) Change all calls to low level digest routines in the library and
3390 applications to use EVP. Add missing calls to HMAC_cleanup() and
3391 don't assume HMAC_CTX can be copied using memcpy().
3392 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3394 *) Add the possibility to control engines through control names but with
3395 arbitrary arguments instead of just a string.
3396 Change the key loaders to take a UI_METHOD instead of a callback
3397 function pointer. NOTE: this breaks binary compatibility with earlier
3398 versions of OpenSSL [engine].
3399 Adapt the nCipher code for these new conditions and add a card insertion
3403 *) Enhance the general user interface with mechanisms to better support
3404 dialog box interfaces, application-defined prompts, the possibility
3405 to use defaults (for example default passwords from somewhere else)
3406 and interrupts/cancellations.
3409 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3410 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3413 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3414 tidy up some unnecessarily weird code in 'sk_new()').
3415 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3417 *) Change the key loading routines for ENGINEs to use the same kind
3418 callback (pem_password_cb) as all other routines that need this
3422 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3423 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3424 than this minimum value is recommended.
3427 *) New random seeder for OpenVMS, using the system process statistics
3428 that are easily reachable.
3431 *) Windows apparently can't transparently handle global
3432 variables defined in DLLs. Initialisations such as:
3434 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3436 wont compile. This is used by the any applications that need to
3437 declare their own ASN1 modules. This was fixed by adding the option
3438 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3439 needed for static libraries under Win32.
3442 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3443 setting of purpose and trust fields. New X509_STORE trust and
3444 purpose functions and tidy up setting in other SSL functions.
3447 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3448 structure. These are inherited by X509_STORE_CTX when it is
3449 initialised. This allows various defaults to be set in the
3450 X509_STORE structure (such as flags for CRL checking and custom
3451 purpose or trust settings) for functions which only use X509_STORE_CTX
3452 internally such as S/MIME.
3454 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3455 trust settings if they are not set in X509_STORE. This allows X509_STORE
3456 purposes and trust (in S/MIME for example) to override any set by default.
3458 Add command line options for CRL checking to smime, s_client and s_server
3462 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3463 are set then the CRL is looked up in the X509_STORE structure and
3464 its validity and signature checked, then if the certificate is found
3465 in the CRL the verify fails with a revoked error.
3467 Various new CRL related callbacks added to X509_STORE_CTX structure.
3469 Command line options added to 'verify' application to support this.
3471 This needs some additional work, such as being able to handle multiple
3472 CRLs with different times, extension based lookup (rather than just
3473 by subject name) and ultimately more complete V2 CRL extension
3477 *) Add a general user interface API (crypto/ui/). This is designed
3478 to replace things like des_read_password and friends (backward
3479 compatibility functions using this new API are provided).
3480 The purpose is to remove prompting functions from the DES code
3481 section as well as provide for prompting through dialog boxes in
3482 a window system and the like.
3485 *) Add "ex_data" support to ENGINE so implementations can add state at a
3486 per-structure level rather than having to store it globally.
3489 *) Make it possible for ENGINE structures to be copied when retrieved by
3490 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3491 This causes the "original" ENGINE structure to act like a template,
3492 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3493 operational state can be localised to each ENGINE structure, despite the
3494 fact they all share the same "methods". New ENGINE structures returned in
3495 this case have no functional references and the return value is the single
3496 structural reference. This matches the single structural reference returned
3497 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3501 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3502 needs to match any other type at all we need to manually clear the
3506 *) Changes to the "openssl engine" utility to include;
3507 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3508 about an ENGINE's available control commands.
3509 - executing control commands from command line arguments using the
3510 '-pre' and '-post' switches. '-post' is only used if '-t' is
3511 specified and the ENGINE is successfully initialised. The syntax for
3512 the individual commands are colon-separated, for example;
3513 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3516 *) New dynamic control command support for ENGINEs. ENGINEs can now
3517 declare their own commands (numbers), names (strings), descriptions,
3518 and input types for run-time discovery by calling applications. A
3519 subset of these commands are implicitly classed as "executable"
3520 depending on their input type, and only these can be invoked through
3521 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3522 can be based on user input, config files, etc). The distinction is
3523 that "executable" commands cannot return anything other than a boolean
3524 result and can only support numeric or string input, whereas some
3525 discoverable commands may only be for direct use through
3526 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3527 pointers, or other custom uses. The "executable" commands are to
3528 support parameterisations of ENGINE behaviour that can be
3529 unambiguously defined by ENGINEs and used consistently across any
3530 OpenSSL-based application. Commands have been added to all the
3531 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3532 control over shared-library paths without source code alterations.
3535 *) Changed all ENGINE implementations to dynamically allocate their
3536 ENGINEs rather than declaring them statically. Apart from this being
3537 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3538 this also allows the implementations to compile without using the
3539 internal engine_int.h header.
3542 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3543 'const' value. Any code that should be able to modify a RAND_METHOD
3544 should already have non-const pointers to it (ie. they should only
3545 modify their own ones).
3548 *) Made a variety of little tweaks to the ENGINE code.
3549 - "atalla" and "ubsec" string definitions were moved from header files
3550 to C code. "nuron" string definitions were placed in variables
3551 rather than hard-coded - allowing parameterisation of these values
3552 later on via ctrl() commands.
3553 - Removed unused "#if 0"'d code.
3554 - Fixed engine list iteration code so it uses ENGINE_free() to release
3555 structural references.
3556 - Constified the RAND_METHOD element of ENGINE structures.
3557 - Constified various get/set functions as appropriate and added
3558 missing functions (including a catch-all ENGINE_cpy that duplicates
3559 all ENGINE values onto a new ENGINE except reference counts/state).
3560 - Removed NULL parameter checks in get/set functions. Setting a method
3561 or function to NULL is a way of cancelling out a previously set
3562 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3563 and doesn't justify the extra error symbols and code.
3564 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3565 flags from engine_int.h to engine.h.
3566 - Changed prototypes for ENGINE handler functions (init(), finish(),
3567 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3570 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3571 to the algorithm using long division. The binary algorithm can be
3572 used only if the modulus is odd. On 32-bit systems, it is faster
3573 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
3574 roughly 5-15% for 256-bit moduli), so we use it only for moduli
3575 up to 450 bits. In 64-bit environments, the binary algorithm
3576 appears to be advantageous for much longer moduli; here we use it
3577 for moduli up to 2048 bits.
3580 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
3581 could not support the combine flag in choice fields.
3584 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
3585 extensions from a certificate request to the certificate.
3588 *) Allow multiple 'certopt' and 'nameopt' options to be separated
3589 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
3590 file: this allows the display of the certificate about to be
3591 signed to be customised, to allow certain fields to be included
3592 or excluded and extension details. The old system didn't display
3593 multicharacter strings properly, omitted fields not in the policy
3594 and couldn't display additional details such as extensions.
3597 *) Function EC_POINTs_mul for multiple scalar multiplication
3598 of an arbitrary number of elliptic curve points
3599 \sum scalars[i]*points[i],
3600 optionally including the generator defined for the EC_GROUP:
3601 scalar*generator + \sum scalars[i]*points[i].
3603 EC_POINT_mul is a simple wrapper function for the typical case
3604 that the point list has just one item (besides the optional
3608 *) First EC_METHODs for curves over GF(p):
3610 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
3611 operations and provides various method functions that can also
3612 operate with faster implementations of modular arithmetic.
3614 EC_GFp_mont_method() reuses most functions that are part of
3615 EC_GFp_simple_method, but uses Montgomery arithmetic.
3617 [Bodo Moeller; point addition and point doubling
3618 implementation directly derived from source code provided by
3619 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3621 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3622 crypto/ec/ec_lib.c):
3624 Curves are EC_GROUP objects (with an optional group generator)
3625 based on EC_METHODs that are built into the library.
3627 Points are EC_POINT objects based on EC_GROUP objects.
3629 Most of the framework would be able to handle curves over arbitrary
3630 finite fields, but as there are no obvious types for fields other
3631 than GF(p), some functions are limited to that for now.
3634 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3635 that the file contains a complete HTTP response.
3638 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3639 change the def and num file printf format specifier from "%-40sXXX"
3640 to "%-39s XXX". The latter will always guarantee a space after the
3641 field while the former will cause them to run together if the field
3642 is 40 of more characters long.
3645 *) Constify the cipher and digest 'method' functions and structures
3646 and modify related functions to take constant EVP_MD and EVP_CIPHER
3650 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3651 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3654 *) Modify EVP_Digest*() routines so they now return values. Although the
3655 internal software routines can never fail additional hardware versions
3659 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3661 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3662 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3665 ERR_R_NESTED_ASN1_ERROR
3667 ERR_R_MISSING_ASN1_EOS
3668 were 4 .. 9, conflicting with
3669 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3671 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3672 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3674 Add new error code 'ERR_R_INTERNAL_ERROR'.
3677 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3681 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3682 sets the subject name for a new request or supersedes the
3683 subject name in a given request. Formats that can be parsed are
3684 'CN=Some Name, OU=myOU, C=IT'
3686 'CN=Some Name/OU=myOU/C=IT'.
3688 Add options '-batch' and '-verbose' to 'openssl req'.
3689 [Massimiliano Pala <madwolf@hackmasters.net>]
3691 *) Introduce the possibility to access global variables through
3692 functions on platform were that's the best way to handle exporting
3693 global variables in shared libraries. To enable this functionality,
3694 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3695 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3696 is normally done by Configure or something similar).
3698 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3699 in the source file (foo.c) like this:
3701 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3702 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3704 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3705 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3707 OPENSSL_DECLARE_GLOBAL(int,foo);
3708 #define foo OPENSSL_GLOBAL_REF(foo)
3709 OPENSSL_DECLARE_GLOBAL(double,bar);
3710 #define bar OPENSSL_GLOBAL_REF(bar)
3712 The #defines are very important, and therefore so is including the
3713 header file everywhere where the defined globals are used.
3715 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3716 of ASN.1 items, but that structure is a bit different.
3718 The largest change is in util/mkdef.pl which has been enhanced with
3719 better and easier to understand logic to choose which symbols should
3720 go into the Windows .def files as well as a number of fixes and code
3721 cleanup (among others, algorithm keywords are now sorted
3722 lexicographically to avoid constant rewrites).
3725 *) In BN_div() keep a copy of the sign of 'num' before writing the
3726 result to 'rm' because if rm==num the value will be overwritten
3727 and produce the wrong result if 'num' is negative: this caused
3728 problems with BN_mod() and BN_nnmod().
3731 *) Function OCSP_request_verify(). This checks the signature on an
3732 OCSP request and verifies the signer certificate. The signer
3733 certificate is just checked for a generic purpose and OCSP request
3737 *) Add OCSP_check_validity() function to check the validity of OCSP
3738 responses. OCSP responses are prepared in real time and may only
3739 be a few seconds old. Simply checking that the current time lies
3740 between thisUpdate and nextUpdate max reject otherwise valid responses
3741 caused by either OCSP responder or client clock inaccuracy. Instead
3742 we allow thisUpdate and nextUpdate to fall within a certain period of
3743 the current time. The age of the response can also optionally be
3744 checked. Two new options -validity_period and -status_age added to
3748 *) If signature or public key algorithm is unrecognized print out its
3749 OID rather that just UNKNOWN.
3752 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3753 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3754 ID to be generated from the issuer certificate alone which can then be
3755 passed to OCSP_id_issuer_cmp().
3758 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3759 ASN1 modules to export functions returning ASN1_ITEM pointers
3760 instead of the ASN1_ITEM structures themselves. This adds several
3761 new macros which allow the underlying ASN1 function/structure to
3762 be accessed transparently. As a result code should not use ASN1_ITEM
3763 references directly (such as &X509_it) but instead use the relevant
3764 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3765 use of the new ASN1 code on platforms where exporting structures
3766 is problematical (for example in shared libraries) but exporting
3767 functions returning pointers to structures is not.
3770 *) Add support for overriding the generation of SSL/TLS session IDs.
3771 These callbacks can be registered either in an SSL_CTX or per SSL.
3772 The purpose of this is to allow applications to control, if they wish,
3773 the arbitrary values chosen for use as session IDs, particularly as it
3774 can be useful for session caching in multiple-server environments. A
3775 command-line switch for testing this (and any client code that wishes
3776 to use such a feature) has been added to "s_server".
3777 [Geoff Thorpe, Lutz Jaenicke]
3779 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3780 of the form '#if defined(...) || defined(...) || ...' and
3781 '#if !defined(...) && !defined(...) && ...'. This also avoids
3782 the growing number of special cases it was previously handling.
3785 *) Make all configuration macros available for application by making
3786 sure they are available in opensslconf.h, by giving them names starting
3787 with "OPENSSL_" to avoid conflicts with other packages and by making
3788 sure e_os2.h will cover all platform-specific cases together with
3790 Additionally, it is now possible to define configuration/platform-
3791 specific names (called "system identities"). In the C code, these
3792 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3793 macro with the name beginning with "OPENSSL_SYS_", which is determined
3794 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3798 *) New option -set_serial to 'req' and 'x509' this allows the serial
3799 number to use to be specified on the command line. Previously self
3800 signed certificates were hard coded with serial number 0 and the
3801 CA options of 'x509' had to use a serial number in a file which was
3805 *) New options to 'ca' utility to support V2 CRL entry extensions.
3806 Currently CRL reason, invalidity date and hold instruction are
3807 supported. Add new CRL extensions to V3 code and some new objects.
3810 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3811 disable standard block padding (aka PKCS#5 padding) in the EVP
3812 API, which was previously mandatory. This means that the data is
3813 not padded in any way and so the total length much be a multiple
3814 of the block size, otherwise an error occurs.
3817 *) Initial (incomplete) OCSP SSL support.
3820 *) New function OCSP_parse_url(). This splits up a URL into its host,
3821 port and path components: primarily to parse OCSP URLs. New -url
3822 option to ocsp utility.
3825 *) New nonce behavior. The return value of OCSP_check_nonce() now
3826 reflects the various checks performed. Applications can decide
3827 whether to tolerate certain situations such as an absent nonce
3828 in a response when one was present in a request: the ocsp application
3829 just prints out a warning. New function OCSP_add1_basic_nonce()
3830 this is to allow responders to include a nonce in a response even if
3831 the request is nonce-less.
3834 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3835 skipped when using openssl x509 multiple times on a single input file,
3836 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3839 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3840 set string type: to handle setting ASN1_TIME structures. Fix ca
3841 utility to correctly initialize revocation date of CRLs.
3844 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3845 the clients preferred ciphersuites and rather use its own preferences.
3846 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3847 Internet Explorer by ensuring unchanged hash method during stepup.
3848 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3851 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3852 to aes and add a new 'exist' option to print out symbols that don't
3856 *) Additional options to ocsp utility to allow flags to be set and
3857 additional certificates supplied.
3860 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3861 OCSP client a number of certificate to only verify the response
3865 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3866 handle the new API. Currently only ECB, CBC modes supported. Add new
3869 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3870 Encryption Standard (AES) Ciphersuites for Transport Layer
3871 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3872 not enabled by default and were not part of the "ALL" ciphersuite
3873 alias because they were not yet official; they could be
3874 explicitly requested by specifying the "AESdraft" ciphersuite
3875 group alias. In the final release of OpenSSL 0.9.7, the group
3876 alias is called "AES" and is part of "ALL".)
3877 [Ben Laurie, Steve Henson, Bodo Moeller]
3879 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3880 request to response.
3883 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3884 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3885 extract information from a certificate request. OCSP_response_create()
3886 creates a response and optionally adds a basic response structure.
3887 OCSP_basic_add1_status() adds a complete single response to a basic
3888 response and returns the OCSP_SINGLERESP structure just added (to allow
3889 extensions to be included for example). OCSP_basic_add1_cert() adds a
3890 certificate to a basic response and OCSP_basic_sign() signs a basic
3891 response with various flags. New helper functions ASN1_TIME_check()
3892 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3893 (converts ASN1_TIME to GeneralizedTime).
3896 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3897 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3898 structure from a certificate. X509_pubkey_digest() digests the public_key
3899 contents: this is used in various key identifiers.
3902 *) Make sk_sort() tolerate a NULL argument.
3903 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3905 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3906 passed by the function are trusted implicitly. If any of them signed the
3907 response then it is assumed to be valid and is not verified.
3910 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3911 to data. This was previously part of the PKCS7 ASN1 code. This
3912 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3913 [Steve Henson, reported by Kenneth R. Robinette
3914 <support@securenetterm.com>]
3916 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3917 routines: without these tracing memory leaks is very painful.
3918 Fix leaks in PKCS12 and PKCS7 routines.
3921 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3922 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3923 effectively meant GeneralizedTime would never be used. Now it
3924 is initialised to -1 but X509_time_adj() now has to check the value
3925 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3926 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3927 [Steve Henson, reported by Kenneth R. Robinette
3928 <support@securenetterm.com>]
3930 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3931 result in a zero length in the ASN1_INTEGER structure which was
3932 not consistent with the structure when d2i_ASN1_INTEGER() was used
3933 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3934 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3935 where it did not print out a minus for negative ASN1_INTEGER.
3938 *) Add summary printout to ocsp utility. The various functions which
3939 convert status values to strings have been renamed to:
3940 OCSP_response_status_str(), OCSP_cert_status_str() and
3941 OCSP_crl_reason_str() and are no longer static. New options
3942 to verify nonce values and to disable verification. OCSP response
3943 printout format cleaned up.
3946 *) Add additional OCSP certificate checks. These are those specified
3947 in RFC2560. This consists of two separate checks: the CA of the
3948 certificate being checked must either be the OCSP signer certificate
3949 or the issuer of the OCSP signer certificate. In the latter case the
3950 OCSP signer certificate must contain the OCSP signing extended key
3951 usage. This check is performed by attempting to match the OCSP
3952 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3953 in the OCSP_CERTID structures of the response.
3956 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3957 and related routines. This uses the standard OpenSSL certificate
3958 verify routines to perform initial checks (just CA validity) and
3959 to obtain the certificate chain. Then additional checks will be
3960 performed on the chain. Currently the root CA is checked to see
3961 if it is explicitly trusted for OCSP signing. This is used to set
3962 a root CA as a global signing root: that is any certificate that
3963 chains to that CA is an acceptable OCSP signing certificate.
3966 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3967 extensions from a separate configuration file.
3968 As when reading extensions from the main configuration file,
3969 the '-extensions ...' option may be used for specifying the
3971 [Massimiliano Pala <madwolf@comune.modena.it>]
3973 *) New OCSP utility. Allows OCSP requests to be generated or
3974 read. The request can be sent to a responder and the output
3975 parsed, outputed or printed in text form. Not complete yet:
3976 still needs to check the OCSP response validity.
3979 *) New subcommands for 'openssl ca':
3980 'openssl ca -status <serial>' prints the status of the cert with
3981 the given serial number (according to the index file).
3982 'openssl ca -updatedb' updates the expiry status of certificates
3984 [Massimiliano Pala <madwolf@comune.modena.it>]
3986 *) New '-newreq-nodes' command option to CA.pl. This is like
3987 '-newreq', but calls 'openssl req' with the '-nodes' option
3988 so that the resulting key is not encrypted.
3989 [Damien Miller <djm@mindrot.org>]
3991 *) New configuration for the GNU Hurd.
3992 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3994 *) Initial code to implement OCSP basic response verify. This
3995 is currently incomplete. Currently just finds the signer's
3996 certificate and verifies the signature on the response.
3999 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4000 value of OPENSSLDIR. This is available via the new '-d' option
4001 to 'openssl version', and is also included in 'openssl version -a'.
4004 *) Allowing defining memory allocation callbacks that will be given
4005 file name and line number information in additional arguments
4006 (a const char* and an int). The basic functionality remains, as
4007 well as the original possibility to just replace malloc(),
4008 realloc() and free() by functions that do not know about these
4009 additional arguments. To register and find out the current
4010 settings for extended allocation functions, the following
4011 functions are provided:
4013 CRYPTO_set_mem_ex_functions
4014 CRYPTO_set_locked_mem_ex_functions
4015 CRYPTO_get_mem_ex_functions
4016 CRYPTO_get_locked_mem_ex_functions
4018 These work the same way as CRYPTO_set_mem_functions and friends.
4019 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4020 extended allocation function is enabled.
4021 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4022 a conventional allocation function is enabled.
4023 [Richard Levitte, Bodo Moeller]
4025 *) Finish off removing the remaining LHASH function pointer casts.
4026 There should no longer be any prototype-casting required when using
4027 the LHASH abstraction, and any casts that remain are "bugs". See
4028 the callback types and macros at the head of lhash.h for details
4029 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4032 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4033 If /dev/[u]random devices are not available or do not return enough
4034 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4036 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4037 /etc/entropy will be queried once each in this sequence, quering stops
4038 when enough entropy was collected without querying more sockets.
4041 *) Change the Unix RAND_poll() variant to be able to poll several
4042 random devices, as specified by DEVRANDOM, until a sufficient amount
4043 of data has been collected. We spend at most 10 ms on each file
4044 (select timeout) and read in non-blocking mode. DEVRANDOM now
4045 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4046 (previously it was just the string "/dev/urandom"), so on typical
4047 platforms the 10 ms delay will never occur.
4048 Also separate out the Unix variant to its own file, rand_unix.c.
4049 For VMS, there's a currently-empty rand_vms.c.
4052 *) Move OCSP client related routines to ocsp_cl.c. These
4053 provide utility functions which an application needing
4054 to issue a request to an OCSP responder and analyse the
4055 response will typically need: as opposed to those which an
4056 OCSP responder itself would need which will be added later.
4058 OCSP_request_sign() signs an OCSP request with an API similar
4059 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4060 response. OCSP_response_get1_basic() extracts basic response
4061 from response. OCSP_resp_find_status(): finds and extracts status
4062 information from an OCSP_CERTID structure (which will be created
4063 when the request structure is built). These are built from lower
4064 level functions which work on OCSP_SINGLERESP structures but
4065 wont normally be used unless the application wishes to examine
4066 extensions in the OCSP response for example.
4068 Replace nonce routines with a pair of functions.
4069 OCSP_request_add1_nonce() adds a nonce value and optionally
4070 generates a random value. OCSP_check_nonce() checks the
4071 validity of the nonce in an OCSP response.
4074 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4075 This doesn't copy the supplied OCSP_CERTID and avoids the
4076 need to free up the newly created id. Change return type
4077 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4078 This can then be used to add extensions to the request.
4079 Deleted OCSP_request_new(), since most of its functionality
4080 is now in OCSP_REQUEST_new() (and the case insensitive name
4081 clash) apart from the ability to set the request name which
4082 will be added elsewhere.
4085 *) Update OCSP API. Remove obsolete extensions argument from
4086 various functions. Extensions are now handled using the new
4087 OCSP extension code. New simple OCSP HTTP function which
4088 can be used to send requests and parse the response.
4091 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4092 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4093 uses the special reorder version of SET OF to sort the attributes
4094 and reorder them to match the encoded order. This resolves a long
4095 standing problem: a verify on a PKCS7 structure just after signing
4096 it used to fail because the attribute order did not match the
4097 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4098 it uses the received order. This is necessary to tolerate some broken
4099 software that does not order SET OF. This is handled by encoding
4100 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4101 to produce the required SET OF.
4104 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4105 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4106 files to get correct declarations of the ASN.1 item variables.
4109 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4110 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4111 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4112 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4113 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4114 ASN1_ITEM and no wrapper functions.
4117 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4118 replace the old function pointer based I/O routines. Change most of
4119 the *_d2i_bio() and *_d2i_fp() functions to use these.
4122 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4123 lines, recognice more "algorithms" that can be deselected, and make
4124 it complain about algorithm deselection that isn't recognised.
4127 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4128 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4129 to use new functions. Add NO_ASN1_OLD which can be set to remove
4130 some old style ASN1 functions: this can be used to determine if old
4131 code will still work when these eventually go away.
4134 *) New extension functions for OCSP structures, these follow the
4135 same conventions as certificates and CRLs.
4138 *) New function X509V3_add1_i2d(). This automatically encodes and
4139 adds an extension. Its behaviour can be customised with various
4140 flags to append, replace or delete. Various wrappers added for
4141 certifcates and CRLs.
4144 *) Fix to avoid calling the underlying ASN1 print routine when
4145 an extension cannot be parsed. Correct a typo in the
4146 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4149 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4150 entries for variables.
4153 *) Add functionality to apps/openssl.c for detecting locking
4154 problems: As the program is single-threaded, all we have
4155 to do is register a locking callback using an array for
4156 storing which locks are currently held by the program.
4159 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4160 SSL_get_ex_data_X509_STORE_idx(), which is used in
4161 ssl_verify_cert_chain() and thus can be called at any time
4162 during TLS/SSL handshakes so that thread-safety is essential.
4163 Unfortunately, the ex_data design is not at all suited
4164 for multi-threaded use, so it probably should be abolished.
4167 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4168 [Broadcom, tweaked and integrated by Geoff Thorpe]
4170 *) Move common extension printing code to new function
4171 X509V3_print_extensions(). Reorganise OCSP print routines and
4172 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4175 *) New function X509_signature_print() to remove duplication in some
4179 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4180 set (this was treated exactly the same as SET OF previously). This
4181 is used to reorder the STACK representing the structure to match the
4182 encoding. This will be used to get round a problem where a PKCS7
4183 structure which was signed could not be verified because the STACK
4184 order did not reflect the encoded order.
4187 *) Reimplement the OCSP ASN1 module using the new code.
4190 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4191 for its ASN1 operations. The old style function pointers still exist
4192 for now but they will eventually go away.
4195 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4196 completely replaces the old ASN1 functionality with a table driven
4197 encoder and decoder which interprets an ASN1_ITEM structure describing
4198 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4199 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4200 has also been converted to the new form.
4203 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4204 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4205 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4206 for negative moduli.
4209 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4210 of not touching the result's sign bit.
4213 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4217 *) Changed the LHASH code to use prototypes for callbacks, and created
4218 macros to declare and implement thin (optionally static) functions
4219 that provide type-safety and avoid function pointer casting for the
4220 type-specific callbacks.
4223 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4225 [Veers Staats <staatsvr@asc.hpc.mil>,
4226 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4228 *) Reformat the FAQ so the different questions and answers can be divided
4229 in sections depending on the subject.
4232 *) Have the zlib compression code load ZLIB.DLL dynamically under
4236 *) New function BN_mod_sqrt for computing square roots modulo a prime
4237 (using the probabilistic Tonelli-Shanks algorithm unless
4238 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4239 be handled deterministically).
4240 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4242 *) Make BN_mod_inverse faster by explicitly handling small quotients
4243 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4244 512 bits], about 30% for larger ones [1024 or 2048 bits].)
4247 *) New function BN_kronecker.
4250 *) Fix BN_gcd so that it works on negative inputs; the result is
4251 positive unless both parameters are zero.
4252 Previously something reasonably close to an infinite loop was
4253 possible because numbers could be growing instead of shrinking
4254 in the implementation of Euclid's algorithm.
4257 *) Fix BN_is_word() and BN_is_one() macros to take into account the
4258 sign of the number in question.
4260 Fix BN_is_word(a,w) to work correctly for w == 0.
4262 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
4263 because its test if the absolute value of 'a' equals 'w'.
4264 Note that BN_abs_is_word does *not* handle w == 0 reliably;
4265 it exists mostly for use in the implementations of BN_is_zero(),
4266 BN_is_one(), and BN_is_word().
4269 *) New function BN_swap.
4272 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
4273 the exponentiation functions are more likely to produce reasonable
4274 results on negative inputs.
4277 *) Change BN_mod_mul so that the result is always non-negative.
4278 Previously, it could be negative if one of the factors was negative;
4279 I don't think anyone really wanted that behaviour.
4282 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
4283 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
4284 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
4285 and add new functions:
4294 BN_mod_lshift1_quick
4298 These functions always generate non-negative results.
4300 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
4301 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
4303 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
4304 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
4305 be reduced modulo m.
4306 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4309 The following entry accidentily appeared in the CHANGES file
4310 distributed with OpenSSL 0.9.7. The modifications described in
4311 it do *not* apply to OpenSSL 0.9.7.
4313 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4314 was actually never needed) and in BN_mul(). The removal in BN_mul()
4315 required a small change in bn_mul_part_recursive() and the addition
4316 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4317 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4318 bn_sub_words() and bn_add_words() except they take arrays with
4323 *) In 'openssl passwd', verify passwords read from the terminal
4324 unless the '-salt' option is used (which usually means that
4325 verification would just waste user's time since the resulting
4326 hash is going to be compared with some given password hash)
4327 or the new '-noverify' option is used.
4329 This is an incompatible change, but it does not affect
4330 non-interactive use of 'openssl passwd' (passwords on the command
4331 line, '-stdin' option, '-in ...' option) and thus should not
4335 *) Remove all references to RSAref, since there's no more need for it.
4338 *) Make DSO load along a path given through an environment variable
4339 (SHLIB_PATH) with shl_load().
4342 *) Constify the ENGINE code as a result of BIGNUM constification.
4343 Also constify the RSA code and most things related to it. In a
4344 few places, most notable in the depth of the ASN.1 code, ugly
4345 casts back to non-const were required (to be solved at a later
4349 *) Make it so the openssl application has all engines loaded by default.
4352 *) Constify the BIGNUM routines a little more.
4355 *) Add the following functions:
4357 ENGINE_load_cswift()
4359 ENGINE_load_atalla()
4361 ENGINE_load_builtin_engines()
4363 That way, an application can itself choose if external engines that
4364 are built-in in OpenSSL shall ever be used or not. The benefit is
4365 that applications won't have to be linked with libdl or other dso
4366 libraries unless it's really needed.
4368 Changed 'openssl engine' to load all engines on demand.
4369 Changed the engine header files to avoid the duplication of some
4370 declarations (they differed!).
4373 *) 'openssl engine' can now list capabilities.
4376 *) Better error reporting in 'openssl engine'.
4379 *) Never call load_dh_param(NULL) in s_server.
4382 *) Add engine application. It can currently list engines by name and
4383 identity, and test if they are actually available.
4386 *) Improve RPM specification file by forcing symbolic linking and making
4387 sure the installed documentation is also owned by root.root.
4388 [Damien Miller <djm@mindrot.org>]
4390 *) Give the OpenSSL applications more possibilities to make use of
4391 keys (public as well as private) handled by engines.
4394 *) Add OCSP code that comes from CertCo.
4397 *) Add VMS support for the Rijndael code.
4400 *) Added untested support for Nuron crypto accelerator.
4403 *) Add support for external cryptographic devices. This code was
4404 previously distributed separately as the "engine" branch.
4405 [Geoff Thorpe, Richard Levitte]
4407 *) Rework the filename-translation in the DSO code. It is now possible to
4408 have far greater control over how a "name" is turned into a filename
4409 depending on the operating environment and any oddities about the
4410 different shared library filenames on each system.
4413 *) Support threads on FreeBSD-elf in Configure.
4416 *) Fix for SHA1 assembly problem with MASM: it produces
4417 warnings about corrupt line number information when assembling
4418 with debugging information. This is caused by the overlapping
4420 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
4423 NCONF_get_number() has no error checking at all. As a replacement,
4424 NCONF_get_number_e() is defined (_e for "error checking") and is
4425 promoted strongly. The old NCONF_get_number is kept around for
4426 binary backward compatibility.
4427 Make it possible for methods to load from something other than a BIO,
4428 by providing a function pointer that is given a name instead of a BIO.
4429 For example, this could be used to load configuration data from an
4433 *) Fix for non blocking accept BIOs. Added new I/O special reason
4434 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
4435 with non blocking I/O was not possible because no retry code was
4436 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
4440 *) Added the beginnings of Rijndael support.
4443 *) Fix for bug in DirectoryString mask setting. Add support for
4444 X509_NAME_print_ex() in 'req' and X509_print_ex() function
4445 to allow certificate printing to more controllable, additional
4446 'certopt' option to 'x509' to allow new printing options to be
4450 *) Clean old EAY MD5 hack from e_os.h.
4453 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
4455 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4456 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4457 [Joe Orton, Steve Henson]
4459 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
4461 *) Fix additional bug revealed by the NISCC test suite:
4463 Stop bug triggering large recursion when presented with
4464 certain ASN.1 tags (CVE-2003-0851)
4467 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
4469 *) Fix various bugs revealed by running the NISCC test suite:
4471 Stop out of bounds reads in the ASN1 code when presented with
4472 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4474 If verify callback ignores invalid public key errors don't try to check
4475 certificate signature with the NULL public key.
4479 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4480 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4484 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4485 extra data after the compression methods not only for TLS 1.0
4486 but also for SSL 3.0 (as required by the specification).
4487 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4489 *) Change X509_certificate_type() to mark the key as exported/exportable
4490 when it's 512 *bits* long, not 512 bytes.
4493 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
4495 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4496 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4497 a protocol version number mismatch like a decryption error
4498 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4501 *) Turn on RSA blinding by default in the default implementation
4502 to avoid a timing attack. Applications that don't want it can call
4503 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4504 They would be ill-advised to do so in most cases.
4505 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4507 *) Change RSA blinding code so that it works when the PRNG is not
4508 seeded (in this case, the secret RSA exponent is abused as
4509 an unpredictable seed -- if it is not unpredictable, there
4510 is no point in blinding anyway). Make RSA blinding thread-safe
4511 by remembering the creator's thread ID in rsa->blinding and
4512 having all other threads use local one-time blinding factors
4513 (this requires more computation than sharing rsa->blinding, but
4514 avoids excessive locking; and if an RSA object is not shared
4515 between threads, blinding will still be very fast).
4518 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
4520 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4521 via timing by performing a MAC computation even if incorrrect
4522 block cipher padding has been found. This is a countermeasure
4523 against active attacks where the attacker has to distinguish
4524 between bad padding and a MAC verification error. (CVE-2003-0078)
4526 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4527 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4528 Martin Vuagnoux (EPFL, Ilion)]
4530 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
4532 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
4533 memory from it's contents. This is done with a counter that will
4534 place alternating values in each byte. This can be used to solve
4535 two issues: 1) the removal of calls to memset() by highly optimizing
4536 compilers, and 2) cleansing with other values than 0, since those can
4537 be read through on certain media, for example a swap space on disk.
4540 *) Bugfix: client side session caching did not work with external caching,
4541 because the session->cipher setting was not restored when reloading
4542 from the external cache. This problem was masked, when
4543 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
4544 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
4547 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
4548 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
4549 [Zeev Lieber <zeev-l@yahoo.com>]
4551 *) Undo an undocumented change introduced in 0.9.6e which caused
4552 repeated calls to OpenSSL_add_all_ciphers() and
4553 OpenSSL_add_all_digests() to be ignored, even after calling
4557 *) Change the default configuration reader to deal with last line not
4558 being properly terminated.
4561 *) Change X509_NAME_cmp() so it applies the special rules on handling
4562 DN values that are of type PrintableString, as well as RDNs of type
4563 emailAddress where the value has the type ia5String.
4564 [stefank@valicert.com via Richard Levitte]
4566 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
4567 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
4568 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
4569 the bitwise-OR of the two for use by the majority of applications
4570 wanting this behaviour, and update the docs. The documented
4571 behaviour and actual behaviour were inconsistent and had been
4572 changing anyway, so this is more a bug-fix than a behavioural
4574 [Geoff Thorpe, diagnosed by Nadav Har'El]
4576 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
4577 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
4580 *) Fix initialization code race conditions in
4581 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
4582 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
4583 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
4584 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
4585 ssl2_get_cipher_by_char(),
4586 ssl3_get_cipher_by_char().
4587 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
4589 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
4590 the cached sessions are flushed, as the remove_cb() might use ex_data
4591 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
4592 (see [openssl.org #212]).
4593 [Geoff Thorpe, Lutz Jaenicke]
4595 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
4596 length, instead of the encoding length to d2i_ASN1_OBJECT.
4599 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
4601 *) [In 0.9.6g-engine release:]
4602 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
4603 [Lynn Gazis <lgazis@rainbow.com>]
4605 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
4607 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
4608 and get fix the header length calculation.
4609 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
4610 Alon Kantor <alonk@checkpoint.com> (and others),
4613 *) Use proper error handling instead of 'assertions' in buffer
4614 overflow checks added in 0.9.6e. This prevents DoS (the
4615 assertions could call abort()).
4616 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4618 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4620 *) Add various sanity checks to asn1_get_length() to reject
4621 the ASN1 length bytes if they exceed sizeof(long), will appear
4622 negative or the content length exceeds the length of the
4624 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4626 *) Fix cipher selection routines: ciphers without encryption had no flags
4627 for the cipher strength set and where therefore not handled correctly
4628 by the selection routines (PR #130).
4631 *) Fix EVP_dsa_sha macro.
4635 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4636 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4637 that was added in OpenSSL 0.9.6d.
4639 As the countermeasure turned out to be incompatible with some
4640 broken SSL implementations, the new option is part of SSL_OP_ALL.
4641 SSL_OP_ALL is usually employed when compatibility with weird SSL
4642 implementations is desired (e.g. '-bugs' option to 's_client' and
4643 's_server'), so the new option is automatically set in many
4647 *) Changes in security patch:
4649 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4650 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4651 Air Force Materiel Command, USAF, under agreement number
4654 *) Add various sanity checks to asn1_get_length() to reject
4655 the ASN1 length bytes if they exceed sizeof(long), will appear
4656 negative or the content length exceeds the length of the
4657 supplied buffer. (CVE-2002-0659)
4658 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4660 *) Assertions for various potential buffer overflows, not known to
4662 [Ben Laurie (CHATS)]
4664 *) Various temporary buffers to hold ASCII versions of integers were
4665 too small for 64 bit platforms. (CVE-2002-0655)
4666 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4668 *) Remote buffer overflow in SSL3 protocol - an attacker could
4669 supply an oversized session ID to a client. (CVE-2002-0656)
4670 [Ben Laurie (CHATS)]
4672 *) Remote buffer overflow in SSL2 protocol - an attacker could
4673 supply an oversized client master key. (CVE-2002-0656)
4674 [Ben Laurie (CHATS)]
4676 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4678 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4679 encoded as NULL) with id-dsa-with-sha1.
4680 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4682 *) Check various X509_...() return values in apps/req.c.
4683 [Nils Larsch <nla@trustcenter.de>]
4685 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4686 an end-of-file condition would erronously be flagged, when the CRLF
4687 was just at the end of a processed block. The bug was discovered when
4688 processing data through a buffering memory BIO handing the data to a
4689 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4690 <ptsekov@syntrex.com> and Nedelcho Stanev.
4693 *) Implement a countermeasure against a vulnerability recently found
4694 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4695 before application data chunks to avoid the use of known IVs
4696 with data potentially chosen by the attacker.
4699 *) Fix length checks in ssl3_get_client_hello().
4702 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4703 to prevent ssl3_read_internal() from incorrectly assuming that
4704 ssl3_read_bytes() found application data while handshake
4705 processing was enabled when in fact s->s3->in_read_app_data was
4706 merely automatically cleared during the initial handshake.
4707 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4709 *) Fix object definitions for Private and Enterprise: they were not
4710 recognized in their shortname (=lowercase) representation. Extend
4711 obj_dat.pl to issue an error when using undefined keywords instead
4712 of silently ignoring the problem (Svenning Sorensen
4713 <sss@sss.dnsalias.net>).
4716 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4717 generators, i.e. generators other than 2 and 5. (Previously, the
4718 code did not properly initialise the 'add' and 'rem' values to
4719 BN_generate_prime().)
4721 In the new general case, we do not insist that 'generator' is
4722 actually a primitive root: This requirement is rather pointless;
4723 a generator of the order-q subgroup is just as good, if not
4727 *) Map new X509 verification errors to alerts. Discovered and submitted by
4728 Tom Wu <tom@arcot.com>.
4731 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4732 returning non-zero before the data has been completely received
4733 when using non-blocking I/O.
4734 [Bodo Moeller; problem pointed out by John Hughes]
4736 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
4737 [Ben Laurie, Lutz Jaenicke]
4739 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
4740 Yoram Zahavi <YoramZ@gilian.com>).
4743 *) Add information about CygWin 1.3 and on, and preserve proper
4744 configuration for the versions before that.
4745 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4747 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
4748 check whether we deal with a copy of a session and do not delete from
4749 the cache in this case. Problem reported by "Izhar Shoshani Levi"
4750 <izhar@checkpoint.com>.
4753 *) Do not store session data into the internal session cache, if it
4754 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
4755 flag is set). Proposed by Aslam <aslam@funk.com>.
4758 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
4762 *) [In 0.9.6d-engine release:]
4763 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4764 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4766 *) Add the configuration target linux-s390x.
4767 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
4769 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
4770 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
4771 variable as an indication that a ClientHello message has been
4772 received. As the flag value will be lost between multiple
4773 invocations of ssl3_accept when using non-blocking I/O, the
4774 function may not be aware that a handshake has actually taken
4775 place, thus preventing a new session from being added to the
4778 To avoid this problem, we now set s->new_session to 2 instead of
4779 using a local variable.
4780 [Lutz Jaenicke, Bodo Moeller]
4782 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
4783 if the SSL_R_LENGTH_MISMATCH error is detected.
4784 [Geoff Thorpe, Bodo Moeller]
4786 *) New 'shared_ldflag' column in Configure platform table.
4789 *) Fix EVP_CIPHER_mode macro.
4790 ["Dan S. Camper" <dan@bti.net>]
4792 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
4793 type, we must throw them away by setting rr->length to 0.
4794 [D P Chang <dpc@qualys.com>]
4796 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
4798 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
4799 <Dominikus.Scherkl@biodata.com>. (The previous implementation
4800 worked incorrectly for those cases where range = 10..._2 and
4801 3*range is two bits longer than range.)
4804 *) Only add signing time to PKCS7 structures if it is not already
4808 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
4809 OBJ_ld_ce should be OBJ_id_ce.
4810 Also some ip-pda OIDs in crypto/objects/objects.txt were
4811 incorrect (cf. RFC 3039).
4812 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
4814 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
4815 returns early because it has nothing to do.
4816 [Andy Schneider <andy.schneider@bjss.co.uk>]
4818 *) [In 0.9.6c-engine release:]
4819 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
4820 [Andy Schneider <andy.schneider@bjss.co.uk>]
4822 *) [In 0.9.6c-engine release:]
4823 Add support for Cryptographic Appliance's keyserver technology.
4824 (Use engine 'keyclient')
4825 [Cryptographic Appliances and Geoff Thorpe]
4827 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
4828 is called via tools/c89.sh because arguments have to be
4829 rearranged (all '-L' options must appear before the first object
4831 [Richard Shapiro <rshapiro@abinitio.com>]
4833 *) [In 0.9.6c-engine release:]
4834 Add support for Broadcom crypto accelerator cards, backported
4836 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
4838 *) [In 0.9.6c-engine release:]
4839 Add support for SureWare crypto accelerator cards from
4840 Baltimore Technologies. (Use engine 'sureware')
4841 [Baltimore Technologies and Mark Cox]
4843 *) [In 0.9.6c-engine release:]
4844 Add support for crypto accelerator cards from Accelerated
4845 Encryption Processing, www.aep.ie. (Use engine 'aep')
4846 [AEP Inc. and Mark Cox]
4848 *) Add a configuration entry for gcc on UnixWare.
4849 [Gary Benson <gbenson@redhat.com>]
4851 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
4852 messages are stored in a single piece (fixed-length part and
4853 variable-length part combined) and fix various bugs found on the way.
4856 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
4857 instead. BIO_gethostbyname() does not know what timeouts are
4858 appropriate, so entries would stay in cache even when they have
4860 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
4862 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
4863 faced with a pathologically small ClientHello fragment that does
4864 not contain client_version: Instead of aborting with an error,
4865 simply choose the highest available protocol version (i.e.,
4866 TLS 1.0 unless it is disabled). In practice, ClientHello
4867 messages are never sent like this, but this change gives us
4868 strictly correct behaviour at least for TLS.
4871 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
4872 never resets s->method to s->ctx->method when called from within
4873 one of the SSL handshake functions.
4874 [Bodo Moeller; problem pointed out by Niko Baric]
4876 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
4877 (sent using the client's version number) if client_version is
4878 smaller than the protocol version in use. Also change
4879 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
4880 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
4881 the client will at least see that alert.
4884 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
4888 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
4889 client receives HelloRequest while in a handshake.
4890 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
4892 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
4893 should end in 'break', not 'goto end' which circuments various
4894 cleanups done in state SSL_ST_OK. But session related stuff
4895 must be disabled for SSL_ST_OK in the case that we just sent a
4898 Also avoid some overhead by not calling ssl_init_wbio_buffer()
4899 before just sending a HelloRequest.
4900 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
4902 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
4903 reveal whether illegal block cipher padding was found or a MAC
4904 verification error occured. (Neither SSLerr() codes nor alerts
4905 are directly visible to potential attackers, but the information
4906 may leak via logfiles.)
4908 Similar changes are not required for the SSL 2.0 implementation
4909 because the number of padding bytes is sent in clear for SSL 2.0,
4910 and the extra bytes are just ignored. However ssl/s2_pkt.c
4911 failed to verify that the purported number of padding bytes is in
4915 *) Add OpenUNIX-8 support including shared libraries
4916 (Boyd Lynn Gerber <gerberb@zenez.com>).
4919 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
4920 'wristwatch attack' using huge encoding parameters (cf.
4921 James H. Manger's CRYPTO 2001 paper). Note that the
4922 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
4923 encoding parameters and hence was not vulnerable.
4926 *) BN_sqr() bug fix.
4927 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
4929 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
4930 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
4931 followed by modular reduction.
4932 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
4934 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
4935 equivalent based on BN_pseudo_rand() instead of BN_rand().
4938 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
4939 This function was broken, as the check for a new client hello message
4940 to handle SGC did not allow these large messages.
4941 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
4944 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
4947 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
4948 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
4951 *) Rework the configuration and shared library support for Tru64 Unix.
4952 The configuration part makes use of modern compiler features and
4953 still retains old compiler behavior for those that run older versions
4954 of the OS. The shared library support part includes a variant that
4955 uses the RPATH feature, and is available through the special
4956 configuration target "alpha-cc-rpath", which will never be selected
4958 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
4960 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
4961 with the same message size as in ssl3_get_certificate_request().
4962 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
4963 messages might inadvertently be reject as too long.
4964 [Petr Lampa <lampa@fee.vutbr.cz>]
4966 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
4969 *) Modified SSL library such that the verify_callback that has been set
4970 specificly for an SSL object with SSL_set_verify() is actually being
4971 used. Before the change, a verify_callback set with this function was
4972 ignored and the verify_callback() set in the SSL_CTX at the time of
4973 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
4974 to allow the necessary settings.
4977 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
4978 explicitly to NULL, as at least on Solaris 8 this seems not always to be
4979 done automatically (in contradiction to the requirements of the C
4980 standard). This made problems when used from OpenSSH.
4983 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
4984 dh->length and always used
4986 BN_rand_range(priv_key, dh->p).
4988 BN_rand_range() is not necessary for Diffie-Hellman, and this
4989 specific range makes Diffie-Hellman unnecessarily inefficient if
4990 dh->length (recommended exponent length) is much smaller than the
4991 length of dh->p. We could use BN_rand_range() if the order of
4992 the subgroup was stored in the DH structure, but we only have
4997 BN_rand(priv_key, l, ...)
4999 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5005 RSA_eay_public_encrypt
5006 RSA_eay_private_decrypt
5007 RSA_eay_private_encrypt (signing)
5008 RSA_eay_public_decrypt (signature verification)
5010 (default implementations for RSA_public_encrypt,
5011 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5012 always reject numbers >= n.
5015 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5016 to synchronize access to 'locking_thread'. This is necessary on
5017 systems where access to 'locking_thread' (an 'unsigned long'
5018 variable) is not atomic.
5021 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5022 *before* setting the 'crypto_lock_rand' flag. The previous code had
5023 a race condition if 0 is a valid thread ID.
5024 [Travis Vitek <vitek@roguewave.com>]
5026 *) Add support for shared libraries under Irix.
5027 [Albert Chin-A-Young <china@thewrittenword.com>]
5029 *) Add configuration option to build on Linux on both big-endian and
5031 [Ralf Baechle <ralf@uni-koblenz.de>]
5033 *) Add the possibility to create shared libraries on HP-UX.
5036 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5038 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5039 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5040 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5041 PRNG state recovery was possible based on the output of
5042 one PRNG request appropriately sized to gain knowledge on
5043 'md' followed by enough consecutive 1-byte PRNG requests
5044 to traverse all of 'state'.
5046 1. When updating 'md_local' (the current thread's copy of 'md')
5047 during PRNG output generation, hash all of the previous
5048 'md_local' value, not just the half used for PRNG output.
5050 2. Make the number of bytes from 'state' included into the hash
5051 independent from the number of PRNG bytes requested.
5053 The first measure alone would be sufficient to avoid
5054 Markku-Juhani's attack. (Actually it had never occurred
5055 to me that the half of 'md_local' used for chaining was the
5056 half from which PRNG output bytes were taken -- I had always
5057 assumed that the secret half would be used.) The second
5058 measure makes sure that additional data from 'state' is never
5059 mixed into 'md_local' in small portions; this heuristically
5060 further strengthens the PRNG.
5063 *) Fix crypto/bn/asm/mips3.s.
5066 *) When only the key is given to "enc", the IV is undefined. Print out
5067 an error message in this case.
5070 *) Handle special case when X509_NAME is empty in X509 printing routines.
5073 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5074 positive and less than q.
5077 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5078 used: it isn't thread safe and the add_lock_callback should handle
5080 [Paul Rose <Paul.Rose@bridge.com>]
5082 *) Verify that incoming data obeys the block size in
5083 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5087 [Ulf Möller, Bodo Möller]
5089 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5090 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5091 when fixing the server behaviour for backwards-compatible 'client
5092 hello' messages. (Note that the attack is impractical against
5093 SSL 3.0 and TLS 1.0 anyway because length and version checking
5094 means that the probability of guessing a valid ciphertext is
5095 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5098 Before 0.9.5, the countermeasure (hide the error by generating a
5099 random 'decryption result') did not work properly because
5100 ERR_clear_error() was missing, meaning that SSL_get_error() would
5101 detect the supposedly ignored error.
5103 Both problems are now fixed.
5106 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5107 (previously it was 1024).
5110 *) Fix for compatibility mode trust settings: ignore trust settings
5111 unless some valid trust or reject settings are present.
5114 *) Fix for blowfish EVP: its a variable length cipher.
5117 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5118 parameters in DSA public key structures and return an error in the
5119 DSA routines if parameters are absent.
5122 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5123 in the current directory if neither $RANDFILE nor $HOME was set.
5124 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5125 caused some confusion to Windows users who haven't defined $HOME.
5126 Thus RAND_file_name() is changed again: e_os.h can define a
5127 DEFAULT_HOME, which will be used if $HOME is not set.
5128 For Windows, we use "C:"; on other platforms, we still require
5129 environment variables.
5131 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5132 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5133 having multiple threads call RAND_poll() concurrently.
5136 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5137 combination of a flag and a thread ID variable.
5138 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5139 flag), *other* threads can enter ssleay_add_bytes without obeying
5140 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5141 that they do not hold after the first thread unsets add_do_not_lock).
5144 *) Change bctest again: '-x' expressions are not available in all
5148 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5150 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5151 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5153 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5154 the default extension for executables, if any. Also, make the perl
5155 scripts that use symlink() to test if it really exists and use "cp"
5156 if it doesn't. All this made OpenSSL compilable and installable in
5160 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5161 If SEQUENCE is length is indefinite just set c->slen to the total
5162 amount of data available.
5163 [Steve Henson, reported by shige@FreeBSD.org]
5164 [This change does not apply to 0.9.7.]
5166 *) Change bctest to avoid here-documents inside command substitution
5167 (workaround for FreeBSD /bin/sh bug).
5168 For compatibility with Ultrix, avoid shell functions (introduced
5169 in the bctest version that searches along $PATH).
5172 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5173 with des_encrypt() defined on some operating systems, like Solaris
5177 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5178 On the Importance of Eliminating Errors in Cryptographic
5179 Computations, J. Cryptology 14 (2001) 2, 101-119,
5180 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5183 *) MIPS assembler BIGNUM division bug fix.
5186 *) Disabled incorrect Alpha assembler code.
5189 *) Fix PKCS#7 decode routines so they correctly update the length
5190 after reading an EOC for the EXPLICIT tag.
5192 [This change does not apply to 0.9.7.]
5194 *) Fix bug in PKCS#12 key generation routines. This was triggered
5195 if a 3DES key was generated with a 0 initial byte. Include
5196 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5197 (but broken) behaviour.
5200 *) Enhance bctest to search for a working bc along $PATH and print
5202 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5204 *) Fix memory leaks in err.c: free err_data string if necessary;
5205 don't write to the wrong index in ERR_set_error_data.
5208 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5212 *) Replace rdtsc with _emit statements for VC++ version 5.
5213 [Jeremy Cooper <jeremy@baymoo.org>]
5215 *) Make it possible to reuse SSLv2 sessions.
5218 *) In copy_email() check for >= 0 as a return value for
5219 X509_NAME_get_index_by_NID() since 0 is a valid index.
5220 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5222 *) Avoid coredump with unsupported or invalid public keys by checking if
5223 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5224 PKCS7_verify() fails with non detached data.
5227 *) Don't use getenv in library functions when run as setuid/setgid.
5228 New function OPENSSL_issetugid().
5231 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5232 due to incorrect handling of multi-threading:
5234 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5236 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5238 3. Count how many times MemCheck_off() has been called so that
5239 nested use can be treated correctly. This also avoids
5240 inband-signalling in the previous code (which relied on the
5241 assumption that thread ID 0 is impossible).
5244 *) Add "-rand" option also to s_client and s_server.
5247 *) Fix CPU detection on Irix 6.x.
5248 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
5249 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5251 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
5254 [This change does not apply to 0.9.7.]
5256 *) Use the cached encoding of an X509_NAME structure rather than
5257 copying it. This is apparently the reason for the libsafe "errors"
5258 but the code is actually correct.
5261 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
5262 Bleichenbacher's DSA attack.
5263 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
5264 to be set and top=0 forces the highest bit to be set; top=-1 is new
5265 and leaves the highest bit random.
5266 [Ulf Moeller, Bodo Moeller]
5268 *) In the NCONF_...-based implementations for CONF_... queries
5269 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
5270 a temporary CONF structure with the data component set to NULL
5271 (which gives segmentation faults in lh_retrieve).
5272 Instead, use NULL for the CONF pointer in CONF_get_string and
5273 CONF_get_number (which may use environment variables) and directly
5274 return NULL from CONF_get_section.
5277 *) Fix potential buffer overrun for EBCDIC.
5280 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
5281 keyUsage if basicConstraints absent for a CA.
5284 *) Make SMIME_write_PKCS7() write mail header values with a format that
5285 is more generally accepted (no spaces before the semicolon), since
5286 some programs can't parse those values properly otherwise. Also make
5287 sure BIO's that break lines after each write do not create invalid
5291 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
5292 macros previously used would not encode an empty SEQUENCE OF
5293 and break the signature.
5295 [This change does not apply to 0.9.7.]
5297 *) Zero the premaster secret after deriving the master secret in
5301 *) Add some EVP_add_digest_alias registrations (as found in
5302 OpenSSL_add_all_digests()) to SSL_library_init()
5303 aka OpenSSL_add_ssl_algorithms(). This provides improved
5304 compatibility with peers using X.509 certificates
5305 with unconventional AlgorithmIdentifier OIDs.
5308 *) Fix for Irix with NO_ASM.
5309 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5311 *) ./config script fixes.
5312 [Ulf Moeller, Richard Levitte]
5314 *) Fix 'openssl passwd -1'.
5317 *) Change PKCS12_key_gen_asc() so it can cope with non null
5318 terminated strings whose length is passed in the passlen
5319 parameter, for example from PEM callbacks. This was done
5320 by adding an extra length parameter to asc2uni().
5321 [Steve Henson, reported by <oddissey@samsung.co.kr>]
5323 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
5324 call failed, free the DSA structure.
5327 *) Fix to uni2asc() to cope with zero length Unicode strings.
5328 These are present in some PKCS#12 files.
5331 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
5332 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
5333 when writing a 32767 byte record.
5334 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
5336 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
5337 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
5339 (RSA objects have a reference count access to which is protected
5340 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
5341 so they are meant to be shared between threads.)
5342 [Bodo Moeller, Geoff Thorpe; original patch submitted by
5343 "Reddie, Steven" <Steven.Reddie@ca.com>]
5345 *) Fix a deadlock in CRYPTO_mem_leaks().
5348 *) Use better test patterns in bntest.
5351 *) rand_win.c fix for Borland C.
5354 *) BN_rshift bugfix for n == 0.
5357 *) Add a 'bctest' script that checks for some known 'bc' bugs
5358 so that 'make test' does not abort just because 'bc' is broken.
5361 *) Store verify_result within SSL_SESSION also for client side to
5362 avoid potential security hole. (Re-used sessions on the client side
5363 always resulted in verify_result==X509_V_OK, not using the original
5364 result of the server certificate verification.)
5367 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
5368 SSL3_RT_APPLICATION_DATA, return 0.
5369 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
5373 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
5374 releases, have been re-implemented by renaming the previous
5375 implementations of ssl2_read and ssl3_read to ssl2_read_internal
5376 and ssl3_read_internal, respectively, and adding 'peek' parameters
5377 to them. The new ssl[23]_{read,peek} functions are calls to
5378 ssl[23]_read_internal with the 'peek' flag set appropriately.
5379 A 'peek' parameter has also been added to ssl3_read_bytes, which
5380 does the actual work for ssl3_read_internal.
5383 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
5384 the method-specific "init()" handler. Also clean up ex_data after
5385 calling the method-specific "finish()" handler. Previously, this was
5386 happening the other way round.
5389 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
5390 The previous value, 12, was not always sufficient for BN_mod_exp().
5393 *) Make sure that shared libraries get the internal name engine with
5394 the full version number and not just 0. This should mark the
5395 shared libraries as not backward compatible. Of course, this should
5396 be changed again when we can guarantee backward binary compatibility.
5399 *) Fix typo in get_cert_by_subject() in by_dir.c
5400 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
5402 *) Rework the system to generate shared libraries:
5404 - Make note of the expected extension for the shared libraries and
5405 if there is a need for symbolic links from for example libcrypto.so.0
5406 to libcrypto.so.0.9.7. There is extended info in Configure for
5409 - Make as few rebuilds of the shared libraries as possible.
5411 - Still avoid linking the OpenSSL programs with the shared libraries.
5413 - When installing, install the shared libraries separately from the
5417 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
5419 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
5420 and not in SSL_clear because the latter is also used by the
5421 accept/connect functions; previously, the settings made by
5422 SSL_set_read_ahead would be lost during the handshake.
5423 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
5425 *) Correct util/mkdef.pl to be selective about disabled algorithms.
5426 Previously, it would create entries for disableed algorithms no
5430 *) Added several new manual pages for SSL_* function.
5433 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
5435 *) In ssl23_get_client_hello, generate an error message when faced
5436 with an initial SSL 3.0/TLS record that is too small to contain the
5437 first two bytes of the ClientHello message, i.e. client_version.
5438 (Note that this is a pathologic case that probably has never happened
5439 in real life.) The previous approach was to use the version number
5440 from the record header as a substitute; but our protocol choice
5441 should not depend on that one because it is not authenticated
5442 by the Finished messages.
5445 *) More robust randomness gathering functions for Windows.
5446 [Jeffrey Altman <jaltman@columbia.edu>]
5448 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
5449 not set then we don't setup the error code for issuer check errors
5450 to avoid possibly overwriting other errors which the callback does
5451 handle. If an application does set the flag then we assume it knows
5452 what it is doing and can handle the new informational codes
5456 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
5457 a general "ANY" type, as such it should be able to decode anything
5458 including tagged types. However it didn't check the class so it would
5459 wrongly interpret tagged types in the same way as their universal
5460 counterpart and unknown types were just rejected. Changed so that the
5461 tagged and unknown types are handled in the same way as a SEQUENCE:
5462 that is the encoding is stored intact. There is also a new type
5463 "V_ASN1_OTHER" which is used when the class is not universal, in this
5464 case we have no idea what the actual type is so we just lump them all
5468 *) On VMS, stdout may very well lead to a file that is written to
5469 in a record-oriented fashion. That means that every write() will
5470 write a separate record, which will be read separately by the
5471 programs trying to read from it. This can be very confusing.
5473 The solution is to put a BIO filter in the way that will buffer
5474 text until a linefeed is reached, and then write everything a
5475 line at a time, so every record written will be an actual line,
5476 not chunks of lines and not (usually doesn't happen, but I've
5477 seen it once) several lines in one record. BIO_f_linebuffer() is
5480 Currently, it's a VMS-only method, because that's where it has
5481 been tested well enough.
5484 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
5485 it can return incorrect results.
5486 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
5487 but it was in 0.9.6-beta[12].)
5490 *) Disable the check for content being present when verifying detached
5491 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
5492 include zero length content when signing messages.
5495 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
5496 BIO_ctrl (for BIO pairs).
5499 *) Add DSO method for VMS.
5502 *) Bug fix: Montgomery multiplication could produce results with the
5506 *) Add RPM specification openssl.spec and modify it to build three
5507 packages. The default package contains applications, application
5508 documentation and run-time libraries. The devel package contains
5509 include files, static libraries and function documentation. The
5510 doc package contains the contents of the doc directory. The original
5511 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
5514 *) Add a large number of documentation files for many SSL routines.
5515 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
5517 *) Add a configuration entry for Sony News 4.
5518 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
5520 *) Don't set the two most significant bits to one when generating a
5521 random number < q in the DSA library.
5524 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
5525 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
5526 the underlying transport is blocking) if a handshake took place.
5527 (The default behaviour is needed by applications such as s_client
5528 and s_server that use select() to determine when to use SSL_read;
5529 but for applications that know in advance when to expect data, it
5530 just makes things more complicated.)
5533 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
5537 *) Add a few more EBCDIC conditionals that make `req' and `x509'
5538 work better on such systems.
5539 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
5541 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
5542 Update PKCS12_parse() so it copies the friendlyName and the
5543 keyid to the certificates aux info.
5546 *) Fix bug in PKCS7_verify() which caused an infinite loop
5547 if there was more than one signature.
5548 [Sven Uszpelkat <su@celocom.de>]
5550 *) Major change in util/mkdef.pl to include extra information
5551 about each symbol, as well as presentig variables as well
5552 as functions. This change means that there's n more need
5553 to rebuild the .num files when some algorithms are excluded.
5556 *) Allow the verify time to be set by an application,
5557 rather than always using the current time.
5560 *) Phase 2 verify code reorganisation. The certificate
5561 verify code now looks up an issuer certificate by a
5562 number of criteria: subject name, authority key id
5563 and key usage. It also verifies self signed certificates
5564 by the same criteria. The main comparison function is
5565 X509_check_issued() which performs these checks.
5567 Lot of changes were necessary in order to support this
5568 without completely rewriting the lookup code.
5570 Authority and subject key identifier are now cached.
5572 The LHASH 'certs' is X509_STORE has now been replaced
5573 by a STACK_OF(X509_OBJECT). This is mainly because an
5574 LHASH can't store or retrieve multiple objects with
5575 the same hash value.
5577 As a result various functions (which were all internal
5578 use only) have changed to handle the new X509_STORE
5579 structure. This will break anything that messed round
5580 with X509_STORE internally.
5582 The functions X509_STORE_add_cert() now checks for an
5583 exact match, rather than just subject name.
5585 The X509_STORE API doesn't directly support the retrieval
5586 of multiple certificates matching a given criteria, however
5587 this can be worked round by performing a lookup first
5588 (which will fill the cache with candidate certificates)
5589 and then examining the cache for matches. This is probably
5590 the best we can do without throwing out X509_LOOKUP
5591 entirely (maybe later...).
5593 The X509_VERIFY_CTX structure has been enhanced considerably.
5595 All certificate lookup operations now go via a get_issuer()
5596 callback. Although this currently uses an X509_STORE it
5597 can be replaced by custom lookups. This is a simple way
5598 to bypass the X509_STORE hackery necessary to make this
5599 work and makes it possible to use more efficient techniques
5600 in future. A very simple version which uses a simple
5601 STACK for its trusted certificate store is also provided
5602 using X509_STORE_CTX_trusted_stack().
5604 The verify_cb() and verify() callbacks now have equivalents
5605 in the X509_STORE_CTX structure.
5607 X509_STORE_CTX also has a 'flags' field which can be used
5608 to customise the verify behaviour.
5611 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
5612 excludes S/MIME capabilities.
5615 *) When a certificate request is read in keep a copy of the
5616 original encoding of the signed data and use it when outputing
5617 again. Signatures then use the original encoding rather than
5618 a decoded, encoded version which may cause problems if the
5619 request is improperly encoded.
5622 *) For consistency with other BIO_puts implementations, call
5623 buffer_write(b, ...) directly in buffer_puts instead of calling
5626 In BIO_puts, increment b->num_write as in BIO_write.
5627 [Peter.Sylvester@EdelWeb.fr]
5629 *) Fix BN_mul_word for the case where the word is 0. (We have to use
5630 BN_zero, we may not return a BIGNUM with an array consisting of
5634 *) Avoid calling abort() from within the library when problems are
5635 detected, except if preprocessor symbols have been defined
5636 (such as REF_CHECK, BN_DEBUG etc.).
5639 *) New openssl application 'rsautl'. This utility can be
5640 used for low level RSA operations. DER public key
5641 BIO/fp routines also added.
5644 *) New Configure entry and patches for compiling on QNX 4.
5645 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
5647 *) A demo state-machine implementation was sponsored by
5648 Nuron (http://www.nuron.com/) and is now available in
5649 demos/state_machine.
5652 *) New options added to the 'dgst' utility for signature
5653 generation and verification.
5656 *) Unrecognized PKCS#7 content types are now handled via a
5657 catch all ASN1_TYPE structure. This allows unsupported
5658 types to be stored as a "blob" and an application can
5659 encode and decode it manually.
5662 *) Fix various signed/unsigned issues to make a_strex.c
5664 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
5666 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
5667 length if passed a buffer. ASN1_INTEGER_to_BN failed
5668 if passed a NULL BN and its argument was negative.
5669 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
5671 *) Modification to PKCS#7 encoding routines to output definite
5672 length encoding. Since currently the whole structures are in
5673 memory there's not real point in using indefinite length
5674 constructed encoding. However if OpenSSL is compiled with
5675 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
5678 *) Added BIO_vprintf() and BIO_vsnprintf().
5681 *) Added more prefixes to parse for in the the strings written
5682 through a logging bio, to cover all the levels that are available
5683 through syslog. The prefixes are now:
5685 PANIC, EMERG, EMR => LOG_EMERG
5686 ALERT, ALR => LOG_ALERT
5687 CRIT, CRI => LOG_CRIT
5688 ERROR, ERR => LOG_ERR
5689 WARNING, WARN, WAR => LOG_WARNING
5690 NOTICE, NOTE, NOT => LOG_NOTICE
5691 INFO, INF => LOG_INFO
5692 DEBUG, DBG => LOG_DEBUG
5694 and as before, if none of those prefixes are present at the
5695 beginning of the string, LOG_ERR is chosen.
5697 On Win32, the LOG_* levels are mapped according to this:
5699 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
5700 LOG_WARNING => EVENTLOG_WARNING_TYPE
5701 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
5705 *) Made it possible to reconfigure with just the configuration
5706 argument "reconf" or "reconfigure". The command line arguments
5707 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
5708 and are retrieved from there when reconfiguring.
5712 [Assar Westerlund <assar@sics.se>, Richard Levitte]
5714 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
5717 *) The obj_dat.pl script was messing up the sorting of object
5718 names. The reason was that it compared the quoted version
5719 of strings as a result "OCSP" > "OCSP Signing" because
5720 " > SPACE. Changed script to store unquoted versions of
5721 names and add quotes on output. It was also omitting some
5722 names from the lookup table if they were given a default
5723 value (that is if SN is missing it is given the same
5724 value as LN and vice versa), these are now added on the
5725 grounds that if an object has a name we should be able to
5726 look it up. Finally added warning output when duplicate
5727 short or long names are found.
5730 *) Changes needed for Tandem NSK.
5731 [Scott Uroff <scott@xypro.com>]
5733 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
5734 RSA_padding_check_SSLv23(), special padding was never detected
5735 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
5736 version rollback attacks was not effective.
5738 In s23_clnt.c, don't use special rollback-attack detection padding
5739 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
5740 client; similarly, in s23_srvr.c, don't do the rollback check if
5741 SSL 2.0 is the only protocol enabled in the server.
5744 *) Make it possible to get hexdumps of unprintable data with 'openssl
5745 asn1parse'. By implication, the functions ASN1_parse_dump() and
5746 BIO_dump_indent() are added.
5749 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
5750 these print out strings and name structures based on various
5751 flags including RFC2253 support and proper handling of
5752 multibyte characters. Added options to the 'x509' utility
5753 to allow the various flags to be set.
5756 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
5757 Also change the functions X509_cmp_current_time() and
5758 X509_gmtime_adj() work with an ASN1_TIME structure,
5759 this will enable certificates using GeneralizedTime in validity
5760 dates to be checked.
5763 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
5764 negative public key encodings) on by default,
5765 NO_NEG_PUBKEY_BUG can be set to disable it.
5768 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
5769 content octets. An i2c_ASN1_OBJECT is unnecessary because
5770 the encoding can be trivially obtained from the structure.
5773 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
5774 not read locks (CRYPTO_r_[un]lock).
5777 *) A first attempt at creating official support for shared
5778 libraries through configuration. I've kept it so the
5779 default is static libraries only, and the OpenSSL programs
5780 are always statically linked for now, but there are
5781 preparations for dynamic linking in place.
5782 This has been tested on Linux and Tru64.
5785 *) Randomness polling function for Win9x, as described in:
5786 Peter Gutmann, Software Generation of Practically Strong
5790 *) Fix so PRNG is seeded in req if using an already existing
5794 *) New options to smime application. -inform and -outform
5795 allow alternative formats for the S/MIME message including
5796 PEM and DER. The -content option allows the content to be
5797 specified separately. This should allow things like Netscape
5798 form signing output easier to verify.
5801 *) Fix the ASN1 encoding of tags using the 'long form'.
5804 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
5805 STRING types. These convert content octets to and from the
5806 underlying type. The actual tag and length octets are
5807 already assumed to have been read in and checked. These
5808 are needed because all other string types have virtually
5809 identical handling apart from the tag. By having versions
5810 of the ASN1 functions that just operate on content octets
5811 IMPLICIT tagging can be handled properly. It also allows
5812 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
5813 and ASN1_INTEGER are identical apart from the tag.
5816 *) Change the handling of OID objects as follows:
5818 - New object identifiers are inserted in objects.txt, following
5819 the syntax given in objects.README.
5820 - objects.pl is used to process obj_mac.num and create a new
5822 - obj_dat.pl is used to create a new obj_dat.h, using the data in
5825 This is currently kind of a hack, and the perl code in objects.pl
5826 isn't very elegant, but it works as I intended. The simplest way
5827 to check that it worked correctly is to look in obj_dat.h and
5828 check the array nid_objs and make sure the objects haven't moved
5829 around (this is important!). Additions are OK, as well as
5830 consistent name changes.
5833 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
5836 *) Addition of the command line parameter '-rand file' to 'openssl req'.
5837 The given file adds to whatever has already been seeded into the
5838 random pool through the RANDFILE configuration file option or
5839 environment variable, or the default random state file.
5842 *) mkstack.pl now sorts each macro group into lexical order.
5843 Previously the output order depended on the order the files
5844 appeared in the directory, resulting in needless rewriting
5848 *) Patches to make OpenSSL compile under Win32 again. Mostly
5849 work arounds for the VC++ problem that it treats func() as
5850 func(void). Also stripped out the parts of mkdef.pl that
5851 added extra typesafe functions: these no longer exist.
5854 *) Reorganisation of the stack code. The macros are now all
5855 collected in safestack.h . Each macro is defined in terms of
5856 a "stack macro" of the form SKM_<name>(type, a, b). The
5857 DEBUG_SAFESTACK is now handled in terms of function casts,
5858 this has the advantage of retaining type safety without the
5859 use of additional functions. If DEBUG_SAFESTACK is not defined
5860 then the non typesafe macros are used instead. Also modified the
5861 mkstack.pl script to handle the new form. Needs testing to see
5862 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
5863 the default if no major problems. Similar behaviour for ASN1_SET_OF
5864 and PKCS12_STACK_OF.
5867 *) When some versions of IIS use the 'NET' form of private key the
5868 key derivation algorithm is different. Normally MD5(password) is
5869 used as a 128 bit RC4 key. In the modified case
5870 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
5871 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
5872 as the old Netscape_RSA functions except they have an additional
5873 'sgckey' parameter which uses the modified algorithm. Also added
5874 an -sgckey command line option to the rsa utility. Thanks to
5875 Adrian Peck <bertie@ncipher.com> for posting details of the modified
5876 algorithm to openssl-dev.
5879 *) The evp_local.h macros were using 'c.##kname' which resulted in
5880 invalid expansion on some systems (SCO 5.0.5 for example).
5881 Corrected to 'c.kname'.
5882 [Phillip Porch <root@theporch.com>]
5884 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
5885 a STACK of email addresses from a certificate or request, these look
5886 in the subject name and the subject alternative name extensions and
5887 omit any duplicate addresses.
5890 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
5891 This makes DSA verification about 2 % faster.
5894 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
5895 (meaning that now 2^5 values will be precomputed, which is only 4 KB
5896 plus overhead for 1024 bit moduli).
5897 This makes exponentiations about 0.5 % faster for 1024 bit
5898 exponents (as measured by "openssl speed rsa2048").
5901 *) Rename memory handling macros to avoid conflicts with other
5903 Malloc => OPENSSL_malloc
5904 Malloc_locked => OPENSSL_malloc_locked
5905 Realloc => OPENSSL_realloc
5906 Free => OPENSSL_free
5909 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
5910 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
5913 *) CygWin32 support.
5914 [John Jarvie <jjarvie@newsguy.com>]
5916 *) The type-safe stack code has been rejigged. It is now only compiled
5917 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
5918 by default all type-specific stack functions are "#define"d back to
5919 standard stack functions. This results in more streamlined output
5920 but retains the type-safety checking possibilities of the original
5924 *) The STACK code has been cleaned up, and certain type declarations
5925 that didn't make a lot of sense have been brought in line. This has
5926 also involved a cleanup of sorts in safestack.h to more correctly
5927 map type-safe stack functions onto their plain stack counterparts.
5928 This work has also resulted in a variety of "const"ifications of
5929 lots of the code, especially "_cmp" operations which should normally
5930 be prototyped with "const" parameters anyway.
5933 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
5934 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
5935 (The PRNG state consists of two parts, the large pool 'state' and 'md',
5936 where all of 'md' is used each time the PRNG is used, but 'state'
5937 is used only indexed by a cyclic counter. As entropy may not be
5938 well distributed from the beginning, 'md' is important as a
5939 chaining variable. However, the output function chains only half
5940 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
5941 all of 'md', and seeding with STATE_SIZE dummy bytes will result
5942 in all of 'state' being rewritten, with the new values depending
5943 on virtually all of 'md'. This overcomes the 80 bit limitation.)
5946 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
5947 the handshake is continued after ssl_verify_cert_chain();
5948 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
5949 can lead to 'unexplainable' connection aborts later.
5950 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
5952 *) Major EVP API cipher revision.
5953 Add hooks for extra EVP features. This allows various cipher
5954 parameters to be set in the EVP interface. Support added for variable
5955 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
5956 setting of RC2 and RC5 parameters.
5958 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
5961 Remove lots of duplicated code from the EVP library. For example *every*
5962 cipher init() function handles the 'iv' in the same way according to the
5963 cipher mode. They also all do nothing if the 'key' parameter is NULL and
5964 for CFB and OFB modes they zero ctx->num.
5966 New functionality allows removal of S/MIME code RC2 hack.
5968 Most of the routines have the same form and so can be declared in terms
5971 By shifting this to the top level EVP_CipherInit() it can be removed from
5972 all individual ciphers. If the cipher wants to handle IVs or keys
5973 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
5976 Change lots of functions like EVP_EncryptUpdate() to now return a
5977 value: although software versions of the algorithms cannot fail
5978 any installed hardware versions can.
5981 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
5982 this option is set, tolerate broken clients that send the negotiated
5983 protocol version number instead of the requested protocol version
5987 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
5988 i.e. non-zero for export ciphersuites, zero otherwise.
5989 Previous versions had this flag inverted, inconsistent with
5990 rsa_tmp_cb (..._TMP_RSA_CB).
5991 [Bodo Moeller; problem reported by Amit Chopra]
5993 *) Add missing DSA library text string. Work around for some IIS
5994 key files with invalid SEQUENCE encoding.
5997 *) Add a document (doc/standards.txt) that list all kinds of standards
5998 and so on that are implemented in OpenSSL.
6001 *) Enhance c_rehash script. Old version would mishandle certificates
6002 with the same subject name hash and wouldn't handle CRLs at all.
6003 Added -fingerprint option to crl utility, to support new c_rehash
6007 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6010 *) Fix for SSL server purpose checking. Server checking was
6011 rejecting certificates which had extended key usage present
6012 but no ssl client purpose.
6013 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6015 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6016 is a little unclear about how a blank password is handled.
6017 Since the password in encoded as a BMPString with terminating
6018 double NULL a zero length password would end up as just the
6019 double NULL. However no password at all is different and is
6020 handled differently in the PKCS#12 key generation code. NS
6021 treats a blank password as zero length. MSIE treats it as no
6022 password on export: but it will try both on import. We now do
6023 the same: PKCS12_parse() tries zero length and no password if
6024 the password is set to "" or NULL (NULL is now a valid password:
6025 it wasn't before) as does the pkcs12 application.
6028 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6029 perror when PEM_read_bio_X509_REQ fails, the error message must
6030 be obtained from the error queue.
6033 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6034 it in ERR_remove_state if appropriate, and change ERR_get_state
6035 accordingly to avoid race conditions (this is necessary because
6036 thread_hash is no longer constant once set).
6039 *) Bugfix for linux-elf makefile.one.
6042 *) RSA_get_default_method() will now cause a default
6043 RSA_METHOD to be chosen if one doesn't exist already.
6044 Previously this was only set during a call to RSA_new()
6045 or RSA_new_method(NULL) meaning it was possible for
6046 RSA_get_default_method() to return NULL.
6049 *) Added native name translation to the existing DSO code
6050 that will convert (if the flag to do so is set) filenames
6051 that are sufficiently small and have no path information
6052 into a canonical native form. Eg. "blah" converted to
6053 "libblah.so" or "blah.dll" etc.
6056 *) New function ERR_error_string_n(e, buf, len) which is like
6057 ERR_error_string(e, buf), but writes at most 'len' bytes
6058 including the 0 terminator. For ERR_error_string_n, 'buf'
6060 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6062 *) CONF library reworked to become more general. A new CONF
6063 configuration file reader "class" is implemented as well as a
6064 new functions (NCONF_*, for "New CONF") to handle it. The now
6065 old CONF_* functions are still there, but are reimplemented to
6066 work in terms of the new functions. Also, a set of functions
6067 to handle the internal storage of the configuration data is
6068 provided to make it easier to write new configuration file
6069 reader "classes" (I can definitely see something reading a
6070 configuration file in XML format, for example), called _CONF_*,
6071 or "the configuration storage API"...
6073 The new configuration file reading functions are:
6075 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6076 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6078 NCONF_default, NCONF_WIN32
6080 NCONF_dump_fp, NCONF_dump_bio
6082 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6083 NCONF_new creates a new CONF object. This works in the same way
6084 as other interfaces in OpenSSL, like the BIO interface.
6085 NCONF_dump_* dump the internal storage of the configuration file,
6086 which is useful for debugging. All other functions take the same
6087 arguments as the old CONF_* functions wth the exception of the
6088 first that must be a `CONF *' instead of a `LHASH *'.
6090 To make it easer to use the new classes with the old CONF_* functions,
6091 the function CONF_set_default_method is provided.
6094 *) Add '-tls1' option to 'openssl ciphers', which was already
6095 mentioned in the documentation but had not been implemented.
6096 (This option is not yet really useful because even the additional
6097 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6100 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6101 OpenSSL-based applications) load shared libraries and bind to
6102 them in a portable way.
6103 [Geoff Thorpe, with contributions from Richard Levitte]
6105 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6107 *) Make sure _lrotl and _lrotr are only used with MSVC.
6109 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6110 (the default implementation of RAND_status).
6112 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6113 to '-clrext' (= clear extensions), as intended and documented.
6114 [Bodo Moeller; inconsistency pointed out by Michael Attili
6117 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6118 was larger than the MD block size.
6119 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6121 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6122 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6123 using the passed key: if the passed key was a private key the result
6124 of X509_print(), for example, would be to print out all the private key
6128 *) des_quad_cksum() byte order bug fix.
6129 [Ulf Möller, using the problem description in krb4-0.9.7, where
6130 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6132 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6134 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6136 *) For easily testing in shell scripts whether some command
6137 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6138 returns with exit code 0 iff no command of the given name is available.
6139 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6140 the output goes to stdout and nothing is printed to stderr.
6141 Additional arguments are always ignored.
6143 Since for each cipher there is a command of the same name,
6144 the 'no-cipher' compilation switches can be tested this way.
6146 ('openssl no-XXX' is not able to detect pseudo-commands such
6147 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6150 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6153 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6154 is set; it will be thrown away anyway because each handshake creates
6156 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6157 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6158 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6159 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6162 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6163 'Q' and 'R' lose their special meanings (quit/renegotiate).
6164 This is part of what -quiet does; unlike -quiet, -ign_eof
6165 does not suppress any output.
6168 *) Add compatibility options to the purpose and trust code. The
6169 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6170 accepts a certificate or CA, this was the previous behaviour,
6171 with all the associated security issues.
6173 X509_TRUST_COMPAT is the old trust behaviour: only and
6174 automatically trust self signed roots in certificate store. A
6175 new trust setting X509_TRUST_DEFAULT is used to specify that
6176 a purpose has no associated trust setting and it should instead
6177 use the value in the default purpose.
6180 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6181 and fix a memory leak.
6184 *) In util/mkerr.pl (which implements 'make errors'), preserve
6185 reason strings from the previous version of the .c file, as
6186 the default to have only downcase letters (and digits) in
6187 automatically generated reasons codes is not always appropriate.
6190 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6191 using strerror. Previously, ERR_reason_error_string() returned
6192 library names as reason strings for SYSerr; but SYSerr is a special
6193 case where small numbers are errno values, not library numbers.
6196 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6197 converts DSA parameters into DH parameters. (When creating parameters,
6198 DSA_generate_parameters is used.)
6201 *) Include 'length' (recommended exponent length) in C code generated
6202 by 'openssl dhparam -C'.
6205 *) The second argument to set_label in perlasm was already being used
6206 so couldn't be used as a "file scope" flag. Moved to third argument
6210 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6211 instead of RAND_bytes for encryption IVs and salts.
6214 *) Include RAND_status() into RAND_METHOD instead of implementing
6215 it only for md_rand.c Otherwise replacing the PRNG by calling
6216 RAND_set_rand_method would be impossible.
6219 *) Don't let DSA_generate_key() enter an infinite loop if the random
6220 number generation fails.
6223 *) New 'rand' application for creating pseudo-random output.
6226 *) Added configuration support for Linux/IA64
6227 [Rolf Haberrecker <rolf@suse.de>]
6229 *) Assembler module support for Mingw32.
6232 *) Shared library support for HPUX (in shlib/).
6233 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6235 *) Shared library support for Solaris gcc.
6236 [Lutz Behnke <behnke@trustcenter.de>]
6238 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6240 *) PKCS7_encrypt() was adding text MIME headers twice because they
6241 were added manually and by SMIME_crlf_copy().
6244 *) In bntest.c don't call BN_rand with zero bits argument.
6245 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
6247 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
6248 case was implemented. This caused BN_div_recp() to fail occasionally.
6251 *) Add an optional second argument to the set_label() in the perl
6252 assembly language builder. If this argument exists and is set
6253 to 1 it signals that the assembler should use a symbol whose
6254 scope is the entire file, not just the current function. This
6255 is needed with MASM which uses the format label:: for this scope.
6256 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
6258 *) Change the ASN1 types so they are typedefs by default. Before
6259 almost all types were #define'd to ASN1_STRING which was causing
6260 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
6264 *) Change names of new functions to the new get1/get0 naming
6265 convention: After 'get1', the caller owns a reference count
6266 and has to call ..._free; 'get0' returns a pointer to some
6267 data structure without incrementing reference counters.
6268 (Some of the existing 'get' functions increment a reference
6269 counter, some don't.)
6270 Similarly, 'set1' and 'add1' functions increase reference
6271 counters or duplicate objects.
6274 *) Allow for the possibility of temp RSA key generation failure:
6275 the code used to assume it always worked and crashed on failure.
6278 *) Fix potential buffer overrun problem in BIO_printf().
6279 [Ulf Möller, using public domain code by Patrick Powell; problem
6280 pointed out by David Sacerdote <das33@cornell.edu>]
6282 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
6283 RAND_egd() and RAND_status(). In the command line application,
6284 the EGD socket can be specified like a seed file using RANDFILE
6288 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
6289 Some CAs (e.g. Verisign) distribute certificates in this form.
6292 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
6293 list to exclude them. This means that no special compilation option
6294 is needed to use anonymous DH: it just needs to be included in the
6298 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
6299 EVP_MD_type. The old functionality is available in a new macro called
6300 EVP_MD_md(). Change code that uses it and update docs.
6303 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
6304 where the 'void *' argument is replaced by a function pointer argument.
6305 Previously 'void *' was abused to point to functions, which works on
6306 many platforms, but is not correct. As these functions are usually
6307 called by macros defined in OpenSSL header files, most source code
6308 should work without changes.
6311 *) <openssl/opensslconf.h> (which is created by Configure) now contains
6312 sections with information on -D... compiler switches used for
6313 compiling the library so that applications can see them. To enable
6314 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
6315 must be defined. E.g.,
6316 #define OPENSSL_ALGORITHM_DEFINES
6317 #include <openssl/opensslconf.h>
6318 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
6319 [Richard Levitte, Ulf and Bodo Möller]
6321 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
6325 *) Change the 'other' type in certificate aux info to a STACK_OF
6326 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
6327 the required ASN1 format: arbitrary types determined by an OID.
6330 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
6331 argument to 'req'. This is not because the function is newer or
6332 better than others it just uses the work 'NEW' in the certificate
6333 request header lines. Some software needs this.
6336 *) Reorganise password command line arguments: now passwords can be
6337 obtained from various sources. Delete the PEM_cb function and make
6338 it the default behaviour: i.e. if the callback is NULL and the
6339 usrdata argument is not NULL interpret it as a null terminated pass
6340 phrase. If usrdata and the callback are NULL then the pass phrase
6341 is prompted for as usual.
6344 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
6345 the support is automatically enabled. The resulting binaries will
6346 autodetect the card and use it if present.
6347 [Ben Laurie and Compaq Inc.]
6349 *) Work around for Netscape hang bug. This sends certificate request
6350 and server done in one record. Since this is perfectly legal in the
6351 SSL/TLS protocol it isn't a "bug" option and is on by default. See
6352 the bugs/SSLv3 entry for more info.
6355 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
6358 *) Add -rand argument to smime and pkcs12 applications and read/write
6362 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
6365 *) Add command line password options to the remaining applications.
6368 *) Bug fix for BN_div_recp() for numerators with an even number of
6372 *) More tests in bntest.c, and changed test_bn output.
6375 *) ./config recognizes MacOS X now.
6378 *) Bug fix for BN_div() when the first words of num and divsor are
6379 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
6382 *) Add support for various broken PKCS#8 formats, and command line
6383 options to produce them.
6386 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
6387 get temporary BIGNUMs from a BN_CTX.
6390 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
6394 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
6395 include a #define from the old name to the new. The original intent
6396 was that statically linked binaries could for example just call
6397 SSLeay_add_all_ciphers() to just add ciphers to the table and not
6398 link with digests. This never worked becayse SSLeay_add_all_digests()
6399 and SSLeay_add_all_ciphers() were in the same source file so calling
6400 one would link with the other. They are now in separate source files.
6403 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
6406 *) Use a less unusual form of the Miller-Rabin primality test (it used
6407 a binary algorithm for exponentiation integrated into the Miller-Rabin
6408 loop, our standard modexp algorithms are faster).
6411 *) Support for the EBCDIC character set completed.
6412 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
6414 *) Source code cleanups: use const where appropriate, eliminate casts,
6415 use void * instead of char * in lhash.
6418 *) Bugfix: ssl3_send_server_key_exchange was not restartable
6419 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
6420 this the server could overwrite ephemeral keys that the client
6424 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
6425 using 50 iterations of the Rabin-Miller test.
6427 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
6428 iterations of the Rabin-Miller test as required by the appendix
6429 to FIPS PUB 186[-1]) instead of DSA_is_prime.
6430 As BN_is_prime_fasttest includes trial division, DSA parameter
6431 generation becomes much faster.
6433 This implies a change for the callback functions in DSA_is_prime
6434 and DSA_generate_parameters: The callback function is called once
6435 for each positive witness in the Rabin-Miller test, not just
6436 occasionally in the inner loop; and the parameters to the
6437 callback function now provide an iteration count for the outer
6438 loop rather than for the current invocation of the inner loop.
6439 DSA_generate_parameters additionally can call the callback
6440 function with an 'iteration count' of -1, meaning that a
6441 candidate has passed the trial division test (when q is generated
6442 from an application-provided seed, trial division is skipped).
6445 *) New function BN_is_prime_fasttest that optionally does trial
6446 division before starting the Rabin-Miller test and has
6447 an additional BN_CTX * argument (whereas BN_is_prime always
6448 has to allocate at least one BN_CTX).
6449 'callback(1, -1, cb_arg)' is called when a number has passed the
6450 trial division stage.
6453 *) Fix for bug in CRL encoding. The validity dates weren't being handled
6457 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
6460 *) New function BN_pseudo_rand().
6463 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
6464 bignum version of BN_from_montgomery() with the working code from
6465 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
6469 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
6470 made it impossible to use the same SSL_SESSION data structure in
6471 SSL2 clients in multiple threads.
6474 *) The return value of RAND_load_file() no longer counts bytes obtained
6475 by stat(). RAND_load_file(..., -1) is new and uses the complete file
6476 to seed the PRNG (previously an explicit byte count was required).
6477 [Ulf Möller, Bodo Möller]
6479 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
6480 used (char *) instead of (void *) and had casts all over the place.
6483 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
6486 *) Retain source code compatibility for BN_prime_checks macro:
6487 BN_is_prime(..., BN_prime_checks, ...) now uses
6488 BN_prime_checks_for_size to determine the appropriate number of
6489 Rabin-Miller iterations.
6492 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
6493 DH_CHECK_P_NOT_SAFE_PRIME.
6494 (Check if this is true? OpenPGP calls them "strong".)
6497 *) Merge the functionality of "dh" and "gendh" programs into a new program
6498 "dhparam". The old programs are retained for now but will handle DH keys
6499 (instead of parameters) in future.
6502 *) Make the ciphers, s_server and s_client programs check the return values
6503 when a new cipher list is set.
6506 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
6507 ciphers. Before when the 56bit ciphers were enabled the sorting was
6510 The syntax for the cipher sorting has been extended to support sorting by
6511 cipher-strength (using the strength_bits hard coded in the tables).
6512 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
6514 Fix a bug in the cipher-command parser: when supplying a cipher command
6515 string with an "undefined" symbol (neither command nor alphanumeric
6516 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
6517 an error is flagged.
6519 Due to the strength-sorting extension, the code of the
6520 ssl_create_cipher_list() function was completely rearranged. I hope that
6521 the readability was also increased :-)
6522 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6524 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
6525 for the first serial number and places 2 in the serial number file. This
6526 avoids problems when the root CA is created with serial number zero and
6527 the first user certificate has the same issuer name and serial number
6531 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
6532 the new code. Add documentation for this stuff.
6535 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
6536 X509_*() to X509at_*() on the grounds that they don't handle X509
6537 structures and behave in an analagous way to the X509v3 functions:
6538 they shouldn't be called directly but wrapper functions should be used
6541 So we also now have some wrapper functions that call the X509at functions
6542 when passed certificate requests. (TO DO: similar things can be done with
6543 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
6544 things. Some of these need some d2i or i2d and print functionality
6545 because they handle more complex structures.)
6548 *) Add missing #ifndefs that caused missing symbols when building libssl
6549 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
6550 NO_RSA in ssl/s2*.c.
6551 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
6553 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
6554 has a return value which indicates the quality of the random data
6555 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
6556 error queue. New function RAND_pseudo_bytes() generates output that is
6557 guaranteed to be unique but not unpredictable. RAND_add is like
6558 RAND_seed, but takes an extra argument for an entropy estimate
6559 (RAND_seed always assumes full entropy).
6562 *) Do more iterations of Rabin-Miller probable prime test (specifically,
6563 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
6564 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
6565 in crypto/bn/bn_prime.c for the complete table). This guarantees a
6566 false-positive rate of at most 2^-80 for random input.
6569 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
6572 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
6573 in the 0.9.5 release), this returns the chain
6574 from an X509_CTX structure with a dup of the stack and all
6575 the X509 reference counts upped: so the stack will exist
6576 after X509_CTX_cleanup() has been called. Modify pkcs12.c
6579 Also make SSL_SESSION_print() print out the verify return
6583 *) Add manpage for the pkcs12 command. Also change the default
6584 behaviour so MAC iteration counts are used unless the new
6585 -nomaciter option is used. This improves file security and
6586 only older versions of MSIE (4.0 for example) need it.
6589 *) Honor the no-xxx Configure options when creating .DEF files.
6592 *) Add PKCS#10 attributes to field table: challengePassword,
6593 unstructuredName and unstructuredAddress. These are taken from
6594 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
6595 international characters are used.
6597 More changes to X509_ATTRIBUTE code: allow the setting of types
6598 based on strings. Remove the 'loc' parameter when adding
6599 attributes because these will be a SET OF encoding which is sorted
6603 *) Initial changes to the 'req' utility to allow request generation
6604 automation. This will allow an application to just generate a template
6605 file containing all the field values and have req construct the
6608 Initial support for X509_ATTRIBUTE handling. Stacks of these are
6609 used all over the place including certificate requests and PKCS#7
6610 structures. They are currently handled manually where necessary with
6611 some primitive wrappers for PKCS#7. The new functions behave in a
6612 manner analogous to the X509 extension functions: they allow
6613 attributes to be looked up by NID and added.
6615 Later something similar to the X509V3 code would be desirable to
6616 automatically handle the encoding, decoding and printing of the
6617 more complex types. The string types like challengePassword can
6618 be handled by the string table functions.
6620 Also modified the multi byte string table handling. Now there is
6621 a 'global mask' which masks out certain types. The table itself
6622 can use the flag STABLE_NO_MASK to ignore the mask setting: this
6623 is useful when for example there is only one permissible type
6624 (as in countryName) and using the mask might result in no valid
6628 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
6629 SSL_get_peer_finished to allow applications to obtain the latest
6630 Finished messages sent to the peer or expected from the peer,
6631 respectively. (SSL_get_peer_finished is usually the Finished message
6632 actually received from the peer, otherwise the protocol will be aborted.)
6634 As the Finished message are message digests of the complete handshake
6635 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
6636 be used for external authentication procedures when the authentication
6637 provided by SSL/TLS is not desired or is not enough.
6640 *) Enhanced support for Alpha Linux is added. Now ./config checks if
6641 the host supports BWX extension and if Compaq C is present on the
6642 $PATH. Just exploiting of the BWX extension results in 20-30%
6643 performance kick for some algorithms, e.g. DES and RC4 to mention
6644 a couple. Compaq C in turn generates ~20% faster code for MD5 and
6648 *) Add support for MS "fast SGC". This is arguably a violation of the
6649 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
6650 weak crypto and after checking the certificate is SGC a second one
6651 with strong crypto. MS SGC stops the first handshake after receiving
6652 the server certificate message and sends a second client hello. Since
6653 a server will typically do all the time consuming operations before
6654 expecting any further messages from the client (server key exchange
6655 is the most expensive) there is little difference between the two.
6657 To get OpenSSL to support MS SGC we have to permit a second client
6658 hello message after we have sent server done. In addition we have to
6659 reset the MAC if we do get this second client hello.
6662 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
6663 if a DER encoded private key is RSA or DSA traditional format. Changed
6664 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
6665 format DER encoded private key. Newer code should use PKCS#8 format which
6666 has the key type encoded in the ASN1 structure. Added DER private key
6667 support to pkcs8 application.
6670 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
6671 ciphersuites has been selected (as required by the SSL 3/TLS 1
6672 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
6673 is set, we interpret this as a request to violate the specification
6674 (the worst that can happen is a handshake failure, and 'correct'
6675 behaviour would result in a handshake failure anyway).
6678 *) In SSL_CTX_add_session, take into account that there might be multiple
6679 SSL_SESSION structures with the same session ID (e.g. when two threads
6680 concurrently obtain them from an external cache).
6681 The internal cache can handle only one SSL_SESSION with a given ID,
6682 so if there's a conflict, we now throw out the old one to achieve
6686 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
6687 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
6688 some routines that use cipher OIDs: some ciphers do not have OIDs
6689 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
6693 *) Simplify the trust setting structure and code. Now we just have
6694 two sequences of OIDs for trusted and rejected settings. These will
6695 typically have values the same as the extended key usage extension
6696 and any application specific purposes.
6698 The trust checking code now has a default behaviour: it will just
6699 check for an object with the same NID as the passed id. Functions can
6700 be provided to override either the default behaviour or the behaviour
6701 for a given id. SSL client, server and email already have functions
6702 in place for compatibility: they check the NID and also return "trusted"
6703 if the certificate is self signed.
6706 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
6707 traditional format into an EVP_PKEY structure.
6710 *) Add a password callback function PEM_cb() which either prompts for
6711 a password if usr_data is NULL or otherwise assumes it is a null
6712 terminated password. Allow passwords to be passed on command line
6713 environment or config files in a few more utilities.
6716 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
6717 keys. Add some short names for PKCS#8 PBE algorithms and allow them
6718 to be specified on the command line for the pkcs8 and pkcs12 utilities.
6719 Update documentation.
6722 *) Support for ASN1 "NULL" type. This could be handled before by using
6723 ASN1_TYPE but there wasn't any function that would try to read a NULL
6724 and produce an error if it couldn't. For compatibility we also have
6725 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
6726 don't allocate anything because they don't need to.
6729 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
6731 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
6733 *) Rebuild of the memory allocation routines used by OpenSSL code and
6734 possibly others as well. The purpose is to make an interface that
6735 provide hooks so anyone can build a separate set of allocation and
6736 deallocation routines to be used by OpenSSL, for example memory
6737 pool implementations, or something else, which was previously hard
6738 since Malloc(), Realloc() and Free() were defined as macros having
6739 the values malloc, realloc and free, respectively (except for Win32
6740 compilations). The same is provided for memory debugging code.
6741 OpenSSL already comes with functionality to find memory leaks, but
6742 this gives people a chance to debug other memory problems.
6744 With these changes, a new set of functions and macros have appeared:
6746 CRYPTO_set_mem_debug_functions() [F]
6747 CRYPTO_get_mem_debug_functions() [F]
6748 CRYPTO_dbg_set_options() [F]
6749 CRYPTO_dbg_get_options() [F]
6750 CRYPTO_malloc_debug_init() [M]
6752 The memory debug functions are NULL by default, unless the library
6753 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
6754 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
6755 gives the standard debugging functions that come with OpenSSL) or
6756 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
6757 provided by the library user) must be used. When the standard
6758 debugging functions are used, CRYPTO_dbg_set_options can be used to
6759 request additional information:
6760 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
6761 the CRYPTO_MDEBUG_xxx macro when compiling the library.
6763 Also, things like CRYPTO_set_mem_functions will always give the
6764 expected result (the new set of functions is used for allocation
6765 and deallocation) at all times, regardless of platform and compiler
6768 To finish it up, some functions that were never use in any other
6769 way than through macros have a new API and new semantic:
6772 CRYPTO_dbg_realloc()
6775 All macros of value have retained their old syntax.
6776 [Richard Levitte and Bodo Moeller]
6778 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
6779 ordering of SMIMECapabilities wasn't in "strength order" and there
6780 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
6784 *) Some ASN1 types with illegal zero length encoding (INTEGER,
6785 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
6786 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
6788 *) Merge in my S/MIME library for OpenSSL. This provides a simple
6789 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
6790 functionality to handle multipart/signed properly) and a utility
6791 called 'smime' to call all this stuff. This is based on code I
6792 originally wrote for Celo who have kindly allowed it to be
6793 included in OpenSSL.
6796 *) Add variants des_set_key_checked and des_set_key_unchecked of
6797 des_set_key (aka des_key_sched). Global variable des_check_key
6798 decides which of these is called by des_set_key; this way
6799 des_check_key behaves as it always did, but applications and
6800 the library itself, which was buggy for des_check_key == 1,
6801 have a cleaner way to pick the version they need.
6804 *) New function PKCS12_newpass() which changes the password of a
6808 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
6809 dynamic mix. In both cases the ids can be used as an index into the
6810 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
6811 functions so they accept a list of the field values and the
6812 application doesn't need to directly manipulate the X509_TRUST
6816 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
6820 *) Modify the way the V3 extension code looks up extensions. This now
6821 works in a similar way to the object code: we have some "standard"
6822 extensions in a static table which is searched with OBJ_bsearch()
6823 and the application can add dynamic ones if needed. The file
6824 crypto/x509v3/ext_dat.h now has the info: this file needs to be
6825 updated whenever a new extension is added to the core code and kept
6826 in ext_nid order. There is a simple program 'tabtest.c' which checks
6827 this. New extensions are not added too often so this file can readily
6828 be maintained manually.
6830 There are two big advantages in doing things this way. The extensions
6831 can be looked up immediately and no longer need to be "added" using
6832 X509V3_add_standard_extensions(): this function now does nothing.
6833 [Side note: I get *lots* of email saying the extension code doesn't
6834 work because people forget to call this function]
6835 Also no dynamic allocation is done unless new extensions are added:
6836 so if we don't add custom extensions there is no need to call
6837 X509V3_EXT_cleanup().
6840 *) Modify enc utility's salting as follows: make salting the default. Add a
6841 magic header, so unsalted files fail gracefully instead of just decrypting
6842 to garbage. This is because not salting is a big security hole, so people
6843 should be discouraged from doing it.
6846 *) Fixes and enhancements to the 'x509' utility. It allowed a message
6847 digest to be passed on the command line but it only used this
6848 parameter when signing a certificate. Modified so all relevant
6849 operations are affected by the digest parameter including the
6850 -fingerprint and -x509toreq options. Also -x509toreq choked if a
6851 DSA key was used because it didn't fix the digest.
6854 *) Initial certificate chain verify code. Currently tests the untrusted
6855 certificates for consistency with the verify purpose (which is set
6856 when the X509_STORE_CTX structure is set up) and checks the pathlength.
6858 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
6859 this is because it will reject chains with invalid extensions whereas
6860 every previous version of OpenSSL and SSLeay made no checks at all.
6862 Trust code: checks the root CA for the relevant trust settings. Trust
6863 settings have an initial value consistent with the verify purpose: e.g.
6864 if the verify purpose is for SSL client use it expects the CA to be
6865 trusted for SSL client use. However the default value can be changed to
6866 permit custom trust settings: one example of this would be to only trust
6867 certificates from a specific "secure" set of CAs.
6869 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
6870 which should be used for version portability: especially since the
6871 verify structure is likely to change more often now.
6873 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
6874 to set them. If not set then assume SSL clients will verify SSL servers
6877 Two new options to the verify program: -untrusted allows a set of
6878 untrusted certificates to be passed in and -purpose which sets the
6879 intended purpose of the certificate. If a purpose is set then the
6880 new chain verify code is used to check extension consistency.
6883 *) Support for the authority information access extension.
6886 *) Modify RSA and DSA PEM read routines to transparently handle
6887 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
6888 public keys in a format compatible with certificate
6889 SubjectPublicKeyInfo structures. Unfortunately there were already
6890 functions called *_PublicKey_* which used various odd formats so
6891 these are retained for compatibility: however the DSA variants were
6892 never in a public release so they have been deleted. Changed dsa/rsa
6893 utilities to handle the new format: note no releases ever handled public
6894 keys so we should be OK.
6896 The primary motivation for this change is to avoid the same fiasco
6897 that dogs private keys: there are several incompatible private key
6898 formats some of which are standard and some OpenSSL specific and
6899 require various evil hacks to allow partial transparent handling and
6900 even then it doesn't work with DER formats. Given the option anything
6901 other than PKCS#8 should be dumped: but the other formats have to
6902 stay in the name of compatibility.
6904 With public keys and the benefit of hindsight one standard format
6905 is used which works with EVP_PKEY, RSA or DSA structures: though
6906 it clearly returns an error if you try to read the wrong kind of key.
6908 Added a -pubkey option to the 'x509' utility to output the public key.
6909 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
6910 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
6911 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
6912 that do the same as the EVP_PKEY_assign_*() except they up the
6913 reference count of the added key (they don't "swallow" the
6917 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
6918 CRLs would fail if the file contained no certificates or no CRLs:
6919 added a new function to read in both types and return the number
6920 read: this means that if none are read it will be an error. The
6921 DER versions of the certificate and CRL reader would always fail
6922 because it isn't possible to mix certificates and CRLs in DER format
6923 without choking one or the other routine. Changed this to just read
6924 a certificate: this is the best we can do. Also modified the code
6925 in apps/verify.c to take notice of return codes: it was previously
6926 attempting to read in certificates from NULL pointers and ignoring
6927 any errors: this is one reason why the cert and CRL reader seemed
6928 to work. It doesn't check return codes from the default certificate
6929 routines: these may well fail if the certificates aren't installed.
6932 *) Code to support otherName option in GeneralName.
6935 *) First update to verify code. Change the verify utility
6936 so it warns if it is passed a self signed certificate:
6937 for consistency with the normal behaviour. X509_verify
6938 has been modified to it will now verify a self signed
6939 certificate if *exactly* the same certificate appears
6940 in the store: it was previously impossible to trust a
6941 single self signed certificate. This means that:
6942 openssl verify ss.pem
6943 now gives a warning about a self signed certificate but
6944 openssl verify -CAfile ss.pem ss.pem
6948 *) For servers, store verify_result in SSL_SESSION data structure
6949 (and add it to external session representation).
6950 This is needed when client certificate verifications fails,
6951 but an application-provided verification callback (set by
6952 SSL_CTX_set_cert_verify_callback) allows accepting the session
6953 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
6954 but returns 1): When the session is reused, we have to set
6955 ssl->verify_result to the appropriate error code to avoid
6957 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
6959 *) Fix a bug in the new PKCS#7 code: it didn't consider the
6960 case in PKCS7_dataInit() where the signed PKCS7 structure
6961 didn't contain any existing data because it was being created.
6962 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
6964 *) Add a salt to the key derivation routines in enc.c. This
6965 forms the first 8 bytes of the encrypted file. Also add a
6966 -S option to allow a salt to be input on the command line.
6969 *) New function X509_cmp(). Oddly enough there wasn't a function
6970 to compare two certificates. We do this by working out the SHA1
6971 hash and comparing that. X509_cmp() will be needed by the trust
6975 *) SSL_get1_session() is like SSL_get_session(), but increments
6976 the reference count in the SSL_SESSION returned.
6977 [Geoff Thorpe <geoff@eu.c2.net>]
6979 *) Fix for 'req': it was adding a null to request attributes.
6980 Also change the X509_LOOKUP and X509_INFO code to handle
6981 certificate auxiliary information.
6984 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
6988 *) Add the possibility to add extra information to the memory leak
6989 detecting output, to form tracebacks, showing from where each
6990 allocation was originated: CRYPTO_push_info("constant string") adds
6991 the string plus current file name and line number to a per-thread
6992 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
6993 is like calling CYRPTO_pop_info() until the stack is empty.
6994 Also updated memory leak detection code to be multi-thread-safe.
6997 *) Add options -text and -noout to pkcs7 utility and delete the
6998 encryption options which never did anything. Update docs.
7001 *) Add options to some of the utilities to allow the pass phrase
7002 to be included on either the command line (not recommended on
7003 OSes like Unix) or read from the environment. Update the
7004 manpages and fix a few bugs.
7007 *) Add a few manpages for some of the openssl commands.
7010 *) Fix the -revoke option in ca. It was freeing up memory twice,
7011 leaking and not finding already revoked certificates.
7014 *) Extensive changes to support certificate auxiliary information.
7015 This involves the use of X509_CERT_AUX structure and X509_AUX
7016 functions. An X509_AUX function such as PEM_read_X509_AUX()
7017 can still read in a certificate file in the usual way but it
7018 will also read in any additional "auxiliary information". By
7019 doing things this way a fair degree of compatibility can be
7020 retained: existing certificates can have this information added
7021 using the new 'x509' options.
7023 Current auxiliary information includes an "alias" and some trust
7024 settings. The trust settings will ultimately be used in enhanced
7025 certificate chain verification routines: currently a certificate
7026 can only be trusted if it is self signed and then it is trusted
7030 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7031 The problem was that one of the replacement routines had not been working
7032 since SSLeay releases. For now the offending routine has been replaced
7033 with non-optimised assembler. Even so, this now gives around 95%
7034 performance improvement for 1024 bit RSA signs.
7037 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7038 handling. Most clients have the effective key size in bits equal to
7039 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7040 A few however don't do this and instead use the size of the decrypted key
7041 to determine the RC2 key length and the AlgorithmIdentifier to determine
7042 the effective key length. In this case the effective key length can still
7043 be 40 bits but the key length can be 168 bits for example. This is fixed
7044 by manually forcing an RC2 key into the EVP_PKEY structure because the
7045 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7046 the key length and effective key length are equal.
7049 *) Add a bunch of functions that should simplify the creation of
7050 X509_NAME structures. Now you should be able to do:
7051 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7052 and have it automatically work out the correct field type and fill in
7053 the structures. The more adventurous can try:
7054 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7055 and it will (hopefully) work out the correct multibyte encoding.
7058 *) Change the 'req' utility to use the new field handling and multibyte
7059 copy routines. Before the DN field creation was handled in an ad hoc
7060 way in req, ca, and x509 which was rather broken and didn't support
7061 BMPStrings or UTF8Strings. Since some software doesn't implement
7062 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7063 using the dirstring_type option. See the new comment in the default
7064 openssl.cnf for more info.
7067 *) Make crypto/rand/md_rand.c more robust:
7068 - Assure unique random numbers after fork().
7069 - Make sure that concurrent threads access the global counter and
7070 md serializably so that we never lose entropy in them
7071 or use exactly the same state in multiple threads.
7072 Access to the large state is not always serializable because
7073 the additional locking could be a performance killer, and
7074 md should be large enough anyway.
7077 *) New file apps/app_rand.c with commonly needed functionality
7078 for handling the random seed file.
7080 Use the random seed file in some applications that previously did not:
7082 dsaparam -genkey (which also ignored its '-rand' option),
7085 x509 (when signing).
7086 Except on systems with /dev/urandom, it is crucial to have a random
7087 seed file at least for key creation, DSA signing, and for DH exchanges;
7088 for RSA signatures we could do without one.
7090 gendh and gendsa (unlike genrsa) used to read only the first byte
7091 of each file listed in the '-rand' option. The function as previously
7092 found in genrsa is now in app_rand.c and is used by all programs
7093 that support '-rand'.
7096 *) In RAND_write_file, use mode 0600 for creating files;
7097 don't just chmod when it may be too late.
7100 *) Report an error from X509_STORE_load_locations
7101 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7104 *) New function ASN1_mbstring_copy() this copies a string in either
7105 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7106 into an ASN1_STRING type. A mask of permissible types is passed
7107 and it chooses the "minimal" type to use or an error if not type
7111 *) Add function equivalents to the various macros in asn1.h. The old
7112 macros are retained with an M_ prefix. Code inside the library can
7113 use the M_ macros. External code (including the openssl utility)
7114 should *NOT* in order to be "shared library friendly".
7117 *) Add various functions that can check a certificate's extensions
7118 to see if it usable for various purposes such as SSL client,
7119 server or S/MIME and CAs of these types. This is currently
7120 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7121 verification. Also added a -purpose flag to x509 utility to
7122 print out all the purposes.
7125 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7129 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7130 for, obtain and decode and extension and obtain its critical flag.
7131 This allows all the necessary extension code to be handled in a
7132 single function call.
7135 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7136 platforms. See crypto/rc4/rc4_enc.c for further details.
7139 *) New -noout option to asn1parse. This causes no output to be produced
7140 its main use is when combined with -strparse and -out to extract data
7141 from a file (which may not be in ASN.1 format).
7144 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7145 when producing the local key id.
7146 [Richard Levitte <levitte@stacken.kth.se>]
7148 *) New option -dhparam in s_server. This allows a DH parameter file to be
7149 stated explicitly. If it is not stated then it tries the first server
7150 certificate file. The previous behaviour hard coded the filename
7154 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7155 a public key to be input or output. For example:
7156 openssl rsa -in key.pem -pubout -out pubkey.pem
7157 Also added necessary DSA public key functions to handle this.
7160 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7161 in the message. This was handled by allowing
7162 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7163 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7165 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7166 to the end of the strings whereas this didn't. This would cause problems
7167 if strings read with d2i_ASN1_bytes() were later modified.
7168 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7170 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7171 data and it contains EOF it will end up returning an error. This is
7172 caused by input 46 bytes long. The cause is due to the way base64
7173 BIOs find the start of base64 encoded data. They do this by trying a
7174 trial decode on each line until they find one that works. When they
7175 do a flag is set and it starts again knowing it can pass all the
7176 data directly through the decoder. Unfortunately it doesn't reset
7177 the context it uses. This means that if EOF is reached an attempt
7178 is made to pass two EOFs through the context and this causes the
7179 resulting error. This can also cause other problems as well. As is
7180 usual with these problems it takes *ages* to find and the fix is
7181 trivial: move one line.
7182 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7184 *) Ugly workaround to get s_client and s_server working under Windows. The
7185 old code wouldn't work because it needed to select() on sockets and the
7186 tty (for keypresses and to see if data could be written). Win32 only
7187 supports select() on sockets so we select() with a 1s timeout on the
7188 sockets and then see if any characters are waiting to be read, if none
7189 are present then we retry, we also assume we can always write data to
7190 the tty. This isn't nice because the code then blocks until we've
7191 received a complete line of data and it is effectively polling the
7192 keyboard at 1s intervals: however it's quite a bit better than not
7193 working at all :-) A dedicated Windows application might handle this
7194 with an event loop for example.
7197 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7198 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7199 will be called when RSA_sign() and RSA_verify() are used. This is useful
7200 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7201 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7202 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7203 This necessitated the support of an extra signature type NID_md5_sha1
7204 for SSL signatures and modifications to the SSL library to use it instead
7205 of calling RSA_public_decrypt() and RSA_private_encrypt().
7208 *) Add new -verify -CAfile and -CApath options to the crl program, these
7209 will lookup a CRL issuers certificate and verify the signature in a
7210 similar way to the verify program. Tidy up the crl program so it
7211 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7212 less strict. It will now permit CRL extensions even if it is not
7213 a V2 CRL: this will allow it to tolerate some broken CRLs.
7216 *) Initialize all non-automatic variables each time one of the openssl
7217 sub-programs is started (this is necessary as they may be started
7218 multiple times from the "OpenSSL>" prompt).
7219 [Lennart Bang, Bodo Moeller]
7221 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7222 removing all other RSA functionality (this is what NO_RSA does). This
7223 is so (for example) those in the US can disable those operations covered
7224 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7228 *) Non-copying interface to BIO pairs.
7229 (still largely untested)
7232 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7233 ASCII string. This was handled independently in various places before.
7236 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7237 UTF8 strings a character at a time.
7240 *) Use client_version from client hello to select the protocol
7241 (s23_srvr.c) and for RSA client key exchange verification
7242 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
7245 *) Add various utility functions to handle SPKACs, these were previously
7246 handled by poking round in the structure internals. Added new function
7247 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
7248 print, verify and generate SPKACs. Based on an original idea from
7249 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
7252 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
7255 *) Allow the config file extension section to be overwritten on the
7256 command line. Based on an original idea from Massimiliano Pala
7257 <madwolf@comune.modena.it>. The new option is called -extensions
7258 and can be applied to ca, req and x509. Also -reqexts to override
7259 the request extensions in req and -crlexts to override the crl extensions
7263 *) Add new feature to the SPKAC handling in ca. Now you can include
7264 the same field multiple times by preceding it by "XXXX." for example:
7267 this is the same syntax as used in the req config file.
7270 *) Allow certificate extensions to be added to certificate requests. These
7271 are specified in a 'req_extensions' option of the req section of the
7272 config file. They can be printed out with the -text option to req but
7273 are otherwise ignored at present.
7276 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
7277 data read consists of only the final block it would not decrypted because
7278 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
7279 A misplaced 'break' also meant the decrypted final block might not be
7280 copied until the next read.
7283 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
7284 a few extra parameters to the DH structure: these will be useful if
7285 for example we want the value of 'q' or implement X9.42 DH.
7288 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
7289 provides hooks that allow the default DSA functions or functions on a
7290 "per key" basis to be replaced. This allows hardware acceleration and
7291 hardware key storage to be handled without major modification to the
7292 library. Also added low level modexp hooks and CRYPTO_EX structure and
7293 associated functions.
7296 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
7297 as "read only": it can't be written to and the buffer it points to will
7298 not be freed. Reading from a read only BIO is much more efficient than
7299 a normal memory BIO. This was added because there are several times when
7300 an area of memory needs to be read from a BIO. The previous method was
7301 to create a memory BIO and write the data to it, this results in two
7302 copies of the data and an O(n^2) reading algorithm. There is a new
7303 function BIO_new_mem_buf() which creates a read only memory BIO from
7304 an area of memory. Also modified the PKCS#7 routines to use read only
7308 *) Bugfix: ssl23_get_client_hello did not work properly when called in
7309 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
7310 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
7311 but a retry condition occured while trying to read the rest.
7314 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
7315 NID_pkcs7_encrypted by default: this was wrong since this should almost
7316 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
7317 the encrypted data type: this is a more sensible place to put it and it
7318 allows the PKCS#12 code to be tidied up that duplicated this
7322 *) Changed obj_dat.pl script so it takes its input and output files on
7323 the command line. This should avoid shell escape redirection problems
7327 *) Initial support for certificate extension requests, these are included
7328 in things like Xenroll certificate requests. Included functions to allow
7329 extensions to be obtained and added.
7332 *) -crlf option to s_client and s_server for sending newlines as
7333 CRLF (as required by many protocols).
7336 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
7338 *) Install libRSAglue.a when OpenSSL is built with RSAref.
7339 [Ralf S. Engelschall]
7341 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
7342 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
7344 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
7348 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
7349 DH parameters/keys (q is lost during that conversion, but the resulting
7350 DH parameters contain its length).
7352 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
7353 much faster than DH_generate_parameters (which creates parameters
7354 where p = 2*q + 1), and also the smaller q makes DH computations
7355 much more efficient (160-bit exponentiation instead of 1024-bit
7356 exponentiation); so this provides a convenient way to support DHE
7357 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
7358 utter importance to use
7359 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7361 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7362 when such DH parameters are used, because otherwise small subgroup
7363 attacks may become possible!
7366 *) Avoid memory leak in i2d_DHparams.
7369 *) Allow the -k option to be used more than once in the enc program:
7370 this allows the same encrypted message to be read by multiple recipients.
7373 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
7374 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
7375 it will always use the numerical form of the OID, even if it has a short
7379 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
7380 method only got called if p,q,dmp1,dmq1,iqmp components were present,
7381 otherwise bn_mod_exp was called. In the case of hardware keys for example
7382 no private key components need be present and it might store extra data
7383 in the RSA structure, which cannot be accessed from bn_mod_exp.
7384 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
7385 private key operations.
7388 *) Added support for SPARC Linux.
7391 *) pem_password_cb function type incompatibly changed from
7392 typedef int pem_password_cb(char *buf, int size, int rwflag);
7394 ....(char *buf, int size, int rwflag, void *userdata);
7395 so that applications can pass data to their callbacks:
7396 The PEM[_ASN1]_{read,write}... functions and macros now take an
7397 additional void * argument, which is just handed through whenever
7398 the password callback is called.
7399 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
7401 New function SSL_CTX_set_default_passwd_cb_userdata.
7403 Compatibility note: As many C implementations push function arguments
7404 onto the stack in reverse order, the new library version is likely to
7405 interoperate with programs that have been compiled with the old
7406 pem_password_cb definition (PEM_whatever takes some data that
7407 happens to be on the stack as its last argument, and the callback
7408 just ignores this garbage); but there is no guarantee whatsoever that
7411 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
7412 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
7413 problems not only on Windows, but also on some Unix platforms.
7414 To avoid problematic command lines, these definitions are now in an
7415 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
7416 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
7419 *) MIPS III/IV assembler module is reimplemented.
7422 *) More DES library cleanups: remove references to srand/rand and
7423 delete an unused file.
7426 *) Add support for the the free Netwide assembler (NASM) under Win32,
7427 since not many people have MASM (ml) and it can be hard to obtain.
7428 This is currently experimental but it seems to work OK and pass all
7429 the tests. Check out INSTALL.W32 for info.
7432 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
7433 without temporary keys kept an extra copy of the server key,
7434 and connections with temporary keys did not free everything in case
7438 *) New function RSA_check_key and new openssl rsa option -check
7439 for verifying the consistency of RSA keys.
7440 [Ulf Moeller, Bodo Moeller]
7442 *) Various changes to make Win32 compile work:
7443 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
7444 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
7445 comparison" warnings.
7446 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
7449 *) Add a debugging option to PKCS#5 v2 key generation function: when
7450 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
7451 derived keys are printed to stderr.
7454 *) Copy the flags in ASN1_STRING_dup().
7455 [Roman E. Pavlov <pre@mo.msk.ru>]
7457 *) The x509 application mishandled signing requests containing DSA
7458 keys when the signing key was also DSA and the parameters didn't match.
7460 It was supposed to omit the parameters when they matched the signing key:
7461 the verifying software was then supposed to automatically use the CA's
7462 parameters if they were absent from the end user certificate.
7464 Omitting parameters is no longer recommended. The test was also
7465 the wrong way round! This was probably due to unusual behaviour in
7466 EVP_cmp_parameters() which returns 1 if the parameters match.
7467 This meant that parameters were omitted when they *didn't* match and
7468 the certificate was useless. Certificates signed with 'ca' didn't have
7470 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
7472 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
7473 The interface is as follows:
7474 Applications can use
7475 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
7476 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
7477 "off" is now the default.
7478 The library internally uses
7479 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
7480 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
7481 to disable memory-checking temporarily.
7483 Some inconsistent states that previously were possible (and were
7484 even the default) are now avoided.
7486 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
7487 with each memory chunk allocated; this is occasionally more helpful
7488 than just having a counter.
7490 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
7492 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
7496 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
7497 which largely parallels "options", but is for changing API behaviour,
7498 whereas "options" are about protocol behaviour.
7499 Initial "mode" flags are:
7501 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
7502 a single record has been written.
7503 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
7504 retries use the same buffer location.
7505 (But all of the contents must be
7509 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
7512 *) Fix problems with no-hmac etc.
7513 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
7515 *) New functions RSA_get_default_method(), RSA_set_method() and
7516 RSA_get_method(). These allows replacement of RSA_METHODs without having
7517 to mess around with the internals of an RSA structure.
7520 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
7521 Also really enable memory leak checks in openssl.c and in some
7523 [Chad C. Mulligan, Bodo Moeller]
7525 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
7526 up the length of negative integers. This has now been simplified to just
7527 store the length when it is first determined and use it later, rather
7528 than trying to keep track of where data is copied and updating it to
7530 [Steve Henson, reported by Brien Wheeler
7531 <bwheeler@authentica-security.com>]
7533 *) Add a new function PKCS7_signatureVerify. This allows the verification
7534 of a PKCS#7 signature but with the signing certificate passed to the
7535 function itself. This contrasts with PKCS7_dataVerify which assumes the
7536 certificate is present in the PKCS#7 structure. This isn't always the
7537 case: certificates can be omitted from a PKCS#7 structure and be
7538 distributed by "out of band" means (such as a certificate database).
7541 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
7542 function prototypes in pem.h, also change util/mkdef.pl to add the
7543 necessary function names.
7546 *) mk1mf.pl (used by Windows builds) did not properly read the
7547 options set by Configure in the top level Makefile, and Configure
7548 was not even able to write more than one option correctly.
7549 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
7552 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
7553 file to be loaded from a BIO or FILE pointer. The BIO version will
7554 for example allow memory BIOs to contain config info.
7557 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
7558 Whoever hopes to achieve shared-library compatibility across versions
7559 must use this, not the compile-time macro.
7560 (Exercise 0.9.4: Which is the minimum library version required by
7562 Note: All this applies only to multi-threaded programs, others don't
7566 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
7567 through a BIO pair triggered the default case, i.e.
7568 SSLerr(...,SSL_R_UNKNOWN_STATE).
7571 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
7572 can use the SSL library even if none of the specific BIOs is
7576 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
7577 for the encoded length.
7578 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
7580 *) Add initial documentation of the X509V3 functions.
7583 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
7584 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
7585 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
7586 secure PKCS#8 private key format with a high iteration count.
7589 *) Fix determination of Perl interpreter: A perl or perl5
7590 _directory_ in $PATH was also accepted as the interpreter.
7591 [Ralf S. Engelschall]
7593 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
7594 wrong with it but it was very old and did things like calling
7595 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
7599 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
7600 to use the new extension code.
7603 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
7604 with macros. This should make it easier to change their form, add extra
7605 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
7609 *) Add to configuration table a new entry that can specify an alternative
7610 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
7611 according to Mark Crispin <MRC@Panda.COM>.
7615 *) DES CBC did not update the IV. Weird.
7618 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
7619 Changing the behaviour of the former might break existing programs --
7620 where IV updating is needed, des_ncbc_encrypt can be used.
7623 *) When bntest is run from "make test" it drives bc to check its
7624 calculations, as well as internally checking them. If an internal check
7625 fails, it needs to cause bc to give a non-zero result or make test carries
7626 on without noticing the failure. Fixed.
7629 *) DES library cleanups.
7632 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
7633 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
7634 ciphers. NOTE: although the key derivation function has been verified
7635 against some published test vectors it has not been extensively tested
7636 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
7640 *) Instead of "mkdir -p", which is not fully portable, use new
7641 Perl script "util/mkdir-p.pl".
7644 *) Rewrite the way password based encryption (PBE) is handled. It used to
7645 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
7646 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
7647 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
7648 the 'parameter' field of the AlgorithmIdentifier is passed to the
7649 underlying key generation function so it must do its own ASN1 parsing.
7650 This has also changed the EVP_PBE_CipherInit() function which now has a
7651 'parameter' argument instead of literal salt and iteration count values
7652 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
7655 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
7656 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
7657 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
7658 KEY" because this clashed with PKCS#8 unencrypted string. Since this
7659 value was just used as a "magic string" and not used directly its
7660 value doesn't matter.
7663 *) Introduce some semblance of const correctness to BN. Shame C doesn't
7667 *) "linux-sparc64" configuration (ultrapenguin).
7668 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
7669 "linux-sparc" configuration.
7670 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
7672 *) config now generates no-xxx options for missing ciphers.
7675 *) Support the EBCDIC character set (work in progress).
7676 File ebcdic.c not yet included because it has a different license.
7677 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7679 *) Support BS2000/OSD-POSIX.
7680 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7682 *) Make callbacks for key generation use void * instead of char *.
7685 *) Make S/MIME samples compile (not yet tested).
7688 *) Additional typesafe stacks.
7691 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
7695 Changes between 0.9.3 and 0.9.3a [29 May 1999]
7697 *) New configuration variant "sco5-gcc".
7699 *) Updated some demos.
7700 [Sean O Riordain, Wade Scholine]
7702 *) Add missing BIO_free at exit of pkcs12 application.
7705 *) Fix memory leak in conf.c.
7708 *) Updates for Win32 to assembler version of MD5.
7711 *) Set #! path to perl in apps/der_chop to where we found it
7712 instead of using a fixed path.
7715 *) SHA library changes for irix64-mips4-cc.
7718 *) Improvements for VMS support.
7722 Changes between 0.9.2b and 0.9.3 [24 May 1999]
7724 *) Bignum library bug fix. IRIX 6 passes "make test" now!
7725 This also avoids the problems with SC4.2 and unpatched SC5.
7726 [Andy Polyakov <appro@fy.chalmers.se>]
7728 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
7729 These are required because of the typesafe stack would otherwise break
7730 existing code. If old code used a structure member which used to be STACK
7731 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
7732 sk_num or sk_value it would produce an error because the num, data members
7733 are not present in STACK_OF. Now it just produces a warning. sk_set
7734 replaces the old method of assigning a value to sk_value
7735 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
7736 that does this will no longer work (and should use sk_set instead) but
7737 this could be regarded as a "questionable" behaviour anyway.
7740 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
7741 correctly handle encrypted S/MIME data.
7744 *) Change type of various DES function arguments from des_cblock
7745 (which means, in function argument declarations, pointer to char)
7746 to des_cblock * (meaning pointer to array with 8 char elements),
7747 which allows the compiler to do more typechecking; it was like
7748 that back in SSLeay, but with lots of ugly casts.
7750 Introduce new type const_des_cblock.
7753 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
7754 problems: find RecipientInfo structure that matches recipient certificate
7755 and initialise the ASN1 structures properly based on passed cipher.
7758 *) Belatedly make the BN tests actually check the results.
7761 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
7762 to and from BNs: it was completely broken. New compilation option
7763 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
7764 key elements as negative integers.
7767 *) Reorganize and speed up MD5.
7768 [Andy Polyakov <appro@fy.chalmers.se>]
7771 [Richard Levitte <richard@levitte.org>]
7773 *) New option -out to asn1parse to allow the parsed structure to be
7774 output to a file. This is most useful when combined with the -strparse
7775 option to examine the output of things like OCTET STRINGS.
7778 *) Make SSL library a little more fool-proof by not requiring any longer
7779 that SSL_set_{accept,connect}_state be called before
7780 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
7781 in many applications because usually everything *appeared* to work as
7782 intended anyway -- now it really works as intended).
7785 *) Move openssl.cnf out of lib/.
7788 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
7789 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
7790 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
7791 [Ralf S. Engelschall]
7793 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
7794 handle PKCS#7 enveloped data properly.
7795 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
7797 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
7798 copying pointers. The cert_st handling is changed by this in
7799 various ways (and thus what used to be known as ctx->default_cert
7800 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
7801 any longer when s->cert does not give us what we need).
7802 ssl_cert_instantiate becomes obsolete by this change.
7803 As soon as we've got the new code right (possibly it already is?),
7804 we have solved a couple of bugs of the earlier code where s->cert
7805 was used as if it could not have been shared with other SSL structures.
7807 Note that using the SSL API in certain dirty ways now will result
7808 in different behaviour than observed with earlier library versions:
7809 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
7810 does not influence s as it used to.
7812 In order to clean up things more thoroughly, inside SSL_SESSION
7813 we don't use CERT any longer, but a new structure SESS_CERT
7814 that holds per-session data (if available); currently, this is
7815 the peer's certificate chain and, for clients, the server's certificate
7816 and temporary key. CERT holds only those values that can have
7817 meaningful defaults in an SSL_CTX.
7820 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
7821 from the internal representation. Various PKCS#7 fixes: remove some
7822 evil casts and set the enc_dig_alg field properly based on the signing
7826 *) Allow PKCS#12 password to be set from the command line or the
7827 environment. Let 'ca' get its config file name from the environment
7828 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
7832 *) Allow certificate policies extension to use an IA5STRING for the
7833 organization field. This is contrary to the PKIX definition but
7834 VeriSign uses it and IE5 only recognises this form. Document 'x509'
7838 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
7839 without disallowing inline assembler and the like for non-pedantic builds.
7842 *) Support Borland C++ builder.
7843 [Janez Jere <jj@void.si>, modified by Ulf Möller]
7848 *) SHA-1 cleanups and performance enhancements.
7849 [Andy Polyakov <appro@fy.chalmers.se>]
7851 *) Sparc v8plus assembler for the bignum library.
7852 [Andy Polyakov <appro@fy.chalmers.se>]
7854 *) Accept any -xxx and +xxx compiler options in Configure.
7857 *) Update HPUX configuration.
7860 *) Add missing sk_<type>_unshift() function to safestack.h
7861 [Ralf S. Engelschall]
7863 *) New function SSL_CTX_use_certificate_chain_file that sets the
7864 "extra_cert"s in addition to the certificate. (This makes sense
7865 only for "PEM" format files, as chains as a whole are not
7869 *) Support verify_depth from the SSL API.
7870 x509_vfy.c had what can be considered an off-by-one-error:
7871 Its depth (which was not part of the external interface)
7872 was actually counting the number of certificates in a chain;
7873 now it really counts the depth.
7876 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
7877 instead of X509err, which often resulted in confusing error
7878 messages since the error codes are not globally unique
7879 (e.g. an alleged error in ssl3_accept when a certificate
7880 didn't match the private key).
7882 *) New function SSL_CTX_set_session_id_context that allows to set a default
7883 value (so that you don't need SSL_set_session_id_context for each
7884 connection using the SSL_CTX).
7887 *) OAEP decoding bug fix.
7890 *) Support INSTALL_PREFIX for package builders, as proposed by
7894 *) New Configure options "threads" and "no-threads". For systems
7895 where the proper compiler options are known (currently Solaris
7896 and Linux), "threads" is the default.
7899 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
7902 *) Install various scripts to $(OPENSSLDIR)/misc, not to
7903 $(INSTALLTOP)/bin -- they shouldn't clutter directories
7904 such as /usr/local/bin.
7907 *) "make linux-shared" to build shared libraries.
7908 [Niels Poppe <niels@netbox.org>]
7910 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
7913 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
7914 extension adding in x509 utility.
7917 *) Remove NOPROTO sections and error code comments.
7920 *) Partial rewrite of the DEF file generator to now parse the ANSI
7924 *) New Configure options --prefix=DIR and --openssldir=DIR.
7927 *) Complete rewrite of the error code script(s). It is all now handled
7928 by one script at the top level which handles error code gathering,
7929 header rewriting and C source file generation. It should be much better
7930 than the old method: it now uses a modified version of Ulf's parser to
7931 read the ANSI prototypes in all header files (thus the old K&R definitions
7932 aren't needed for error creation any more) and do a better job of
7933 translating function codes into names. The old 'ASN1 error code imbedded
7934 in a comment' is no longer necessary and it doesn't use .err files which
7935 have now been deleted. Also the error code call doesn't have to appear all
7936 on one line (which resulted in some large lines...).
7939 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
7942 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
7943 0 (which usually indicates a closed connection), but continue reading.
7946 *) Fix some race conditions.
7949 *) Add support for CRL distribution points extension. Add Certificate
7950 Policies and CRL distribution points documentation.
7953 *) Move the autogenerated header file parts to crypto/opensslconf.h.
7956 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
7957 8 of keying material. Merlin has also confirmed interop with this fix
7958 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
7959 [Merlin Hughes <merlin@baltimore.ie>]
7961 *) Fix lots of warnings.
7962 [Richard Levitte <levitte@stacken.kth.se>]
7964 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
7965 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
7966 [Richard Levitte <levitte@stacken.kth.se>]
7968 *) Fix problems with sizeof(long) == 8.
7969 [Andy Polyakov <appro@fy.chalmers.se>]
7971 *) Change functions to ANSI C.
7974 *) Fix typos in error codes.
7975 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
7977 *) Remove defunct assembler files from Configure.
7980 *) SPARC v8 assembler BIGNUM implementation.
7981 [Andy Polyakov <appro@fy.chalmers.se>]
7983 *) Support for Certificate Policies extension: both print and set.
7984 Various additions to support the r2i method this uses.
7987 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
7988 return a const string when you are expecting an allocated buffer.
7991 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
7992 types DirectoryString and DisplayText.
7995 *) Add code to allow r2i extensions to access the configuration database,
7996 add an LHASH database driver and add several ctx helper functions.
7999 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8000 fail when they extended the size of a BIGNUM.
8003 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8004 support typesafe stack.
8007 *) Fix typo in SSL_[gs]et_options().
8008 [Nils Frostberg <nils@medcom.se>]
8010 *) Delete various functions and files that belonged to the (now obsolete)
8011 old X509V3 handling code.
8014 *) New Configure option "rsaref".
8017 *) Don't auto-generate pem.h.
8020 *) Introduce type-safe ASN.1 SETs.
8023 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8024 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8026 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8027 that links with OpenSSL (well at least cause lots of warnings), but fear
8028 not: the conversion is trivial, and it eliminates loads of evil casts. A
8029 few STACKed things have been converted already. Feel free to convert more.
8030 In the fullness of time, I'll do away with the STACK type altogether.
8033 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8034 specified in <certfile> by updating the entry in the index.txt file.
8035 This way one no longer has to edit the index.txt file manually for
8036 revoking a certificate. The -revoke option does the gory details now.
8037 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8039 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8040 `-text' option at all and this way the `-noout -text' combination was
8041 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8042 [Ralf S. Engelschall]
8044 *) Make sure a corresponding plain text error message exists for the
8045 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8046 verify callback function determined that a certificate was revoked.
8047 [Ralf S. Engelschall]
8049 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8050 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8051 all available cipers including rc5, which was forgotten until now.
8052 In order to let the testing shell script know which algorithms
8053 are available, a new (up to now undocumented) command
8054 "openssl list-cipher-commands" is used.
8057 *) Bugfix: s_client occasionally would sleep in select() when
8058 it should have checked SSL_pending() first.
8061 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8062 the raw DSA values prior to ASN.1 encoding.
8065 *) Tweaks to Configure
8066 [Niels Poppe <niels@netbox.org>]
8068 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8072 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8075 *) New config option to avoid instructions that are illegal on the 80386.
8076 The default code is faster, but requires at least a 486.
8079 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8080 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8081 same as SSL2_VERSION anyway.
8084 *) New "-showcerts" option for s_client.
8087 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8088 application. Various cleanups and fixes.
8091 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8092 modify error routines to work internally. Add error codes and PBE init
8093 to library startup routines.
8096 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8097 packing functions to asn1 and evp. Changed function names and error
8098 codes along the way.
8101 *) PKCS12 integration: and so it begins... First of several patches to
8102 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8103 objects to objects.h
8106 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8107 and display support for Thawte strong extranet extension.
8110 *) Add LinuxPPC support.
8111 [Jeff Dubrule <igor@pobox.org>]
8113 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8114 bn_div_words in alpha.s.
8115 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8117 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8118 OAEP isn't supported when OpenSSL is built with RSAref.
8119 [Ulf Moeller <ulf@fitug.de>]
8121 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8122 so they no longer are missing under -DNOPROTO.
8123 [Soren S. Jorvang <soren@t.dk>]
8126 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8128 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8129 doesn't work when the session is reused. Coming soon!
8132 *) Fix a security hole, that allows sessions to be reused in the wrong
8133 context thus bypassing client cert protection! All software that uses
8134 client certs and session caches in multiple contexts NEEDS PATCHING to
8135 allow session reuse! A fuller solution is in the works.
8136 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8138 *) Some more source tree cleanups (removed obsolete files
8139 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8140 permission on "config" script to be executable) and a fix for the INSTALL
8142 [Ulf Moeller <ulf@fitug.de>]
8144 *) Remove some legacy and erroneous uses of malloc, free instead of
8146 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8148 *) Make rsa_oaep_test return non-zero on error.
8149 [Ulf Moeller <ulf@fitug.de>]
8151 *) Add support for native Solaris shared libraries. Configure
8152 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8153 if someone would make that last step automatic.
8154 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8156 *) ctx_size was not built with the right compiler during "make links". Fixed.
8159 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8160 except NULL ciphers". This means the default cipher list will no longer
8161 enable NULL ciphers. They need to be specifically enabled e.g. with
8162 the string "DEFAULT:eNULL".
8165 *) Fix to RSA private encryption routines: if p < q then it would
8166 occasionally produce an invalid result. This will only happen with
8167 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8170 *) Be less restrictive and allow also `perl util/perlpath.pl
8171 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8172 because this way one can also use an interpreter named `perl5' (which is
8173 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8174 installed as `perl').
8175 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8177 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8178 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8180 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8181 advapi32.lib to Win32 build and change the pem test comparision
8182 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8183 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8184 and crypto/des/ede_cbcm_enc.c.
8187 *) DES quad checksum was broken on big-endian architectures. Fixed.
8190 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8191 Win32 test batch file so it (might) work again. The Win32 test batch file
8192 is horrible: I feel ill....
8195 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8196 in e_os.h. Audit of header files to check ANSI and non ANSI
8197 sections: 10 functions were absent from non ANSI section and not exported
8198 from Windows DLLs. Fixed up libeay.num for new functions.
8201 *) Make `openssl version' output lines consistent.
8202 [Ralf S. Engelschall]
8204 *) Fix Win32 symbol export lists for BIO functions: Added
8205 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8206 to ms/libeay{16,32}.def.
8207 [Ralf S. Engelschall]
8209 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8210 fine under Unix and passes some trivial tests I've now added. But the
8211 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8212 added to make sure no one expects that this stuff really works in the
8213 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8214 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8216 [Ralf S. Engelschall]
8218 *) Fix the generation of two part addresses in perl.
8219 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8221 *) Add config entry for Linux on MIPS.
8222 [John Tobey <jtobey@channel1.com>]
8224 *) Make links whenever Configure is run, unless we are on Windoze.
8227 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8228 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8232 *) Add a useful kludge to allow package maintainers to specify compiler and
8233 other platforms details on the command line without having to patch the
8234 Configure script everytime: One now can use ``perl Configure
8235 <id>:<details>'', i.e. platform ids are allowed to have details appended
8236 to them (seperated by colons). This is treated as there would be a static
8237 pre-configured entry in Configure's %table under key <id> with value
8238 <details> and ``perl Configure <id>'' is called. So, when you want to
8239 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8240 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8241 now, which overrides the FreeBSD-elf entry on-the-fly.
8242 [Ralf S. Engelschall]
8244 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
8247 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
8248 on the `perl Configure ...' command line. This way one can compile
8249 OpenSSL libraries with Position Independent Code (PIC) which is needed
8250 for linking it into DSOs.
8251 [Ralf S. Engelschall]
8253 *) Remarkably, export ciphers were totally broken and no-one had noticed!
8257 *) Cleaned up the LICENSE document: The official contact for any license
8258 questions now is the OpenSSL core team under openssl-core@openssl.org.
8259 And add a paragraph about the dual-license situation to make sure people
8260 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
8261 to the OpenSSL toolkit.
8262 [Ralf S. Engelschall]
8264 *) General source tree makefile cleanups: Made `making xxx in yyy...'
8265 display consistent in the source tree and replaced `/bin/rm' by `rm'.
8266 Additonally cleaned up the `make links' target: Remove unnecessary
8267 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
8268 to speed processing and no longer clutter the display with confusing
8269 stuff. Instead only the actually done links are displayed.
8270 [Ralf S. Engelschall]
8272 *) Permit null encryption ciphersuites, used for authentication only. It used
8273 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
8274 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
8278 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
8279 signed attributes when verifying signatures (this would break them),
8280 the detached data encoding was wrong and public keys obtained using
8281 X509_get_pubkey() weren't freed.
8284 *) Add text documentation for the BUFFER functions. Also added a work around
8285 to a Win95 console bug. This was triggered by the password read stuff: the
8286 last character typed gets carried over to the next fread(). If you were
8287 generating a new cert request using 'req' for example then the last
8288 character of the passphrase would be CR which would then enter the first
8292 *) Added the new `Includes OpenSSL Cryptography Software' button as
8293 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
8294 button and can be used by applications based on OpenSSL to show the
8295 relationship to the OpenSSL project.
8296 [Ralf S. Engelschall]
8298 *) Remove confusing variables in function signatures in files
8299 ssl/ssl_lib.c and ssl/ssl.h.
8300 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8302 *) Don't install bss_file.c under PREFIX/include/
8303 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8305 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
8306 functions that return function pointers and has support for NT specific
8307 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
8308 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
8309 unsigned to signed types: this was killing the Win32 compile.
8312 *) Add new certificate file to stack functions,
8313 SSL_add_dir_cert_subjects_to_stack() and
8314 SSL_add_file_cert_subjects_to_stack(). These largely supplant
8315 SSL_load_client_CA_file(), and can be used to add multiple certs easily
8316 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
8317 This means that Apache-SSL and similar packages don't have to mess around
8318 to add as many CAs as they want to the preferred list.
8321 *) Experiment with doxygen documentation. Currently only partially applied to
8323 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
8324 openssl.doxy as the configuration file.
8327 *) Get rid of remaining C++-style comments which strict C compilers hate.
8328 [Ralf S. Engelschall, pointed out by Carlos Amengual]
8330 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
8331 compiled in by default: it has problems with large keys.
8334 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
8335 DH private keys and/or callback functions which directly correspond to
8336 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
8337 is needed for applications which have to configure certificates on a
8338 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
8340 For the RSA certificate situation is makes no difference, but
8341 for the DSA certificate situation this fixes the "no shared cipher"
8342 problem where the OpenSSL cipher selection procedure failed because the
8343 temporary keys were not overtaken from the context and the API provided
8344 no way to reconfigure them.
8345 The new functions now let applications reconfigure the stuff and they
8346 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
8347 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
8348 non-public-API function ssl_cert_instantiate() is used as a helper
8349 function and also to reduce code redundancy inside ssl_rsa.c.
8350 [Ralf S. Engelschall]
8352 *) Move s_server -dcert and -dkey options out of the undocumented feature
8353 area because they are useful for the DSA situation and should be
8354 recognized by the users.
8355 [Ralf S. Engelschall]
8357 *) Fix the cipher decision scheme for export ciphers: the export bits are
8358 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
8359 SSL_EXP_MASK. So, the original variable has to be used instead of the
8360 already masked variable.
8361 [Richard Levitte <levitte@stacken.kth.se>]
8363 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
8364 [Richard Levitte <levitte@stacken.kth.se>]
8366 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
8367 from `int' to `unsigned int' because it's a length and initialized by
8368 EVP_DigestFinal() which expects an `unsigned int *'.
8369 [Richard Levitte <levitte@stacken.kth.se>]
8371 *) Don't hard-code path to Perl interpreter on shebang line of Configure
8372 script. Instead use the usual Shell->Perl transition trick.
8373 [Ralf S. Engelschall]
8375 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
8376 (in addition to RSA certificates) to match the behaviour of `openssl dsa
8377 -noout -modulus' as it's already the case for `openssl rsa -noout
8378 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
8379 currently the public key is printed (a decision which was already done by
8380 `openssl dsa -modulus' in the past) which serves a similar purpose.
8381 Additionally the NO_RSA no longer completely removes the whole -modulus
8382 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
8384 [Ralf S. Engelschall]
8386 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
8387 BIO. See the source (crypto/evp/bio_ok.c) for more info.
8388 [Arne Ansper <arne@ats.cyber.ee>]
8390 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
8391 to be added. Now both 'req' and 'ca' can use new objects defined in the
8395 *) Add cool BIO that does syslog (or event log on NT).
8396 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
8398 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
8399 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
8400 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
8401 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
8404 *) Add preliminary config info for new extension code.
8407 *) Make RSA_NO_PADDING really use no padding.
8408 [Ulf Moeller <ulf@fitug.de>]
8410 *) Generate errors when private/public key check is done.
8413 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
8414 for some CRL extensions and new objects added.
8417 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
8418 key usage extension and fuller support for authority key id.
8421 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
8422 padding method for RSA, which is recommended for new applications in PKCS
8423 #1 v2.0 (RFC 2437, October 1998).
8424 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
8425 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
8426 against Bleichbacher's attack on RSA.
8427 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
8430 *) Updates to the new SSL compression code
8431 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8433 *) Fix so that the version number in the master secret, when passed
8434 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
8435 (because the server will not accept higher), that the version number
8436 is 0x03,0x01, not 0x03,0x00
8437 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8439 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
8440 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
8441 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
8444 *) Support for RAW extensions where an arbitrary extension can be
8445 created by including its DER encoding. See apps/openssl.cnf for
8449 *) Make sure latest Perl versions don't interpret some generated C array
8450 code as Perl array code in the crypto/err/err_genc.pl script.
8451 [Lars Weber <3weber@informatik.uni-hamburg.de>]
8453 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
8454 not many people have the assembler. Various Win32 compilation fixes and
8455 update to the INSTALL.W32 file with (hopefully) more accurate Win32
8459 *) Modify configure script 'Configure' to automatically create crypto/date.h
8460 file under Win32 and also build pem.h from pem.org. New script
8461 util/mkfiles.pl to create the MINFO file on environments that can't do a
8462 'make files': perl util/mkfiles.pl >MINFO should work.
8465 *) Major rework of DES function declarations, in the pursuit of correctness
8466 and purity. As a result, many evil casts evaporated, and some weirdness,
8467 too. You may find this causes warnings in your code. Zapping your evil
8468 casts will probably fix them. Mostly.
8471 *) Fix for a typo in asn1.h. Bug fix to object creation script
8472 obj_dat.pl. It considered a zero in an object definition to mean
8473 "end of object": none of the objects in objects.h have any zeros
8474 so it wasn't spotted.
8475 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
8477 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
8478 Masking (CBCM). In the absence of test vectors, the best I have been able
8479 to do is check that the decrypt undoes the encrypt, so far. Send me test
8480 vectors if you have them.
8483 *) Correct calculation of key length for export ciphers (too much space was
8484 allocated for null ciphers). This has not been tested!
8487 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
8488 message is now correct (it understands "crypto" and "ssl" on its
8489 command line). There is also now an "update" option. This will update
8490 the util/ssleay.num and util/libeay.num files with any new functions.
8492 perl util/mkdef.pl crypto ssl update
8493 it will update them.
8496 *) Overhauled the Perl interface (perl/*):
8497 - ported BN stuff to OpenSSL's different BN library
8498 - made the perl/ source tree CVS-aware
8499 - renamed the package from SSLeay to OpenSSL (the files still contain
8500 their history because I've copied them in the repository)
8501 - removed obsolete files (the test scripts will be replaced
8502 by better Test::Harness variants in the future)
8503 [Ralf S. Engelschall]
8505 *) First cut for a very conservative source tree cleanup:
8506 1. merge various obsolete readme texts into doc/ssleay.txt
8507 where we collect the old documents and readme texts.
8508 2. remove the first part of files where I'm already sure that we no
8509 longer need them because of three reasons: either they are just temporary
8510 files which were left by Eric or they are preserved original files where
8511 I've verified that the diff is also available in the CVS via "cvs diff
8512 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
8513 the crypto/md/ stuff).
8514 [Ralf S. Engelschall]
8516 *) More extension code. Incomplete support for subject and issuer alt
8517 name, issuer and authority key id. Change the i2v function parameters
8518 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
8519 what that's for :-) Fix to ASN1 macro which messed up
8520 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
8523 *) Preliminary support for ENUMERATED type. This is largely copied from the
8527 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
8528 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8530 *) Make sure `make rehash' target really finds the `openssl' program.
8531 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8533 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
8534 like to hear about it if this slows down other processors.
8537 *) Add CygWin32 platform information to Configure script.
8538 [Alan Batie <batie@aahz.jf.intel.com>]
8540 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
8541 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
8543 *) New program nseq to manipulate netscape certificate sequences
8546 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
8550 *) Fixes to BN code. Previously the default was to define BN_RECURSION
8551 but the BN code had some problems that would cause failures when
8552 doing certificate verification and some other functions.
8553 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8555 *) Add ASN1 and PEM code to support netscape certificate sequences.
8558 *) Add ASN1 and PEM code to support netscape certificate sequences.
8561 *) Add several PKIX and private extended key usage OIDs.
8564 *) Modify the 'ca' program to handle the new extension code. Modify
8565 openssl.cnf for new extension format, add comments.
8568 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
8569 and add a sample to openssl.cnf so req -x509 now adds appropriate
8573 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
8574 error code, add initial support to X509_print() and x509 application.
8577 *) Takes a deep breath and start addding X509 V3 extension support code. Add
8578 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
8579 stuff is currently isolated and isn't even compiled yet.
8582 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
8583 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
8584 Removed the versions check from X509 routines when loading extensions:
8585 this allows certain broken certificates that don't set the version
8586 properly to be processed.
8589 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
8590 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
8591 can still be regenerated with "make depend".
8594 *) Spelling mistake in C version of CAST-128.
8595 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
8597 *) Changes to the error generation code. The perl script err-code.pl
8598 now reads in the old error codes and retains the old numbers, only
8599 adding new ones if necessary. It also only changes the .err files if new
8600 codes are added. The makefiles have been modified to only insert errors
8601 when needed (to avoid needlessly modifying header files). This is done
8602 by only inserting errors if the .err file is newer than the auto generated
8603 C file. To rebuild all the error codes from scratch (the old behaviour)
8604 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
8605 or delete all the .err files.
8608 *) CAST-128 was incorrectly implemented for short keys. The C version has
8609 been fixed, but is untested. The assembler versions are also fixed, but
8610 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
8611 to regenerate it if needed.
8612 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
8613 Hagino <itojun@kame.net>]
8615 *) File was opened incorrectly in randfile.c.
8616 [Ulf Möller <ulf@fitug.de>]
8618 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
8619 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
8620 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
8621 al: it's just almost always a UTCTime. Note this patch adds new error
8622 codes so do a "make errors" if there are problems.
8625 *) Correct Linux 1 recognition in config.
8626 [Ulf Möller <ulf@fitug.de>]
8628 *) Remove pointless MD5 hash when using DSA keys in ca.
8629 [Anonymous <nobody@replay.com>]
8631 *) Generate an error if given an empty string as a cert directory. Also
8632 generate an error if handed NULL (previously returned 0 to indicate an
8633 error, but didn't set one).
8634 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
8636 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
8639 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
8640 parameters. This was causing a warning which killed off the Win32 compile.
8643 *) Remove C++ style comments from crypto/bn/bn_local.h.
8644 [Neil Costigan <neil.costigan@celocom.com>]
8646 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
8647 based on a text string, looking up short and long names and finally
8648 "dot" format. The "dot" format stuff didn't work. Added new function
8649 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
8650 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
8651 OID is not part of the table.
8654 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
8655 X509_LOOKUP_by_alias().
8658 *) Sort openssl functions by name.
8661 *) Get the gendsa program working (hopefully) and add it to app list. Remove
8662 encryption from sample DSA keys (in case anyone is interested the password
8666 *) Make _all_ *_free functions accept a NULL pointer.
8667 [Frans Heymans <fheymans@isaserver.be>]
8669 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
8671 [Anonymous <nobody@replay.com>]
8673 *) s_server should send the CAfile as acceptable CAs, not its own cert.
8674 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8676 *) Don't blow it for numeric -newkey arguments to apps/req.
8677 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8679 *) Temp key "for export" tests were wrong in s3_srvr.c.
8680 [Anonymous <nobody@replay.com>]
8682 *) Add prototype for temp key callback functions
8683 SSL_CTX_set_tmp_{rsa,dh}_callback().
8686 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
8687 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
8690 *) X509_name_add_entry() freed the wrong thing after an error.
8691 [Arne Ansper <arne@ats.cyber.ee>]
8693 *) rsa_eay.c would attempt to free a NULL context.
8694 [Arne Ansper <arne@ats.cyber.ee>]
8696 *) BIO_s_socket() had a broken should_retry() on Windoze.
8697 [Arne Ansper <arne@ats.cyber.ee>]
8699 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
8700 [Arne Ansper <arne@ats.cyber.ee>]
8702 *) Make sure the already existing X509_STORE->depth variable is initialized
8703 in X509_STORE_new(), but document the fact that this variable is still
8704 unused in the certificate verification process.
8705 [Ralf S. Engelschall]
8707 *) Fix the various library and apps files to free up pkeys obtained from
8708 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
8711 *) Fix reference counting in X509_PUBKEY_get(). This makes
8712 demos/maurice/example2.c work, amongst others, probably.
8713 [Steve Henson and Ben Laurie]
8715 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
8716 `openssl' and second, the shortcut symlinks for the `openssl <command>'
8717 are no longer created. This way we have a single and consistent command
8718 line interface `openssl <command>', similar to `cvs <command>'.
8719 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
8721 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
8722 BIT STRING wrapper always have zero unused bits.
8725 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
8728 *) Make the top-level INSTALL documentation easier to understand.
8731 *) Makefiles updated to exit if an error occurs in a sub-directory
8732 make (including if user presses ^C) [Paul Sutton]
8734 *) Make Montgomery context stuff explicit in RSA data structure.
8737 *) Fix build order of pem and err to allow for generated pem.h.
8740 *) Fix renumbering bug in X509_NAME_delete_entry().
8743 *) Enhanced the err-ins.pl script so it makes the error library number
8744 global and can add a library name. This is needed for external ASN1 and
8745 other error libraries.
8748 *) Fixed sk_insert which never worked properly.
8751 *) Fix ASN1 macros so they can handle indefinite length construted
8752 EXPLICIT tags. Some non standard certificates use these: they can now
8756 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
8757 into a single doc/ssleay.txt bundle. This way the information is still
8758 preserved but no longer messes up this directory. Now it's new room for
8759 the new set of documenation files.
8760 [Ralf S. Engelschall]
8762 *) SETs were incorrectly DER encoded. This was a major pain, because they
8763 shared code with SEQUENCEs, which aren't coded the same. This means that
8764 almost everything to do with SETs or SEQUENCEs has either changed name or
8765 number of arguments.
8766 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
8768 *) Fix test data to work with the above.
8771 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
8772 was already fixed by Eric for 0.9.1 it seems.
8773 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
8775 *) Autodetect FreeBSD3.
8778 *) Fix various bugs in Configure. This affects the following platforms:
8782 unixware-2.0-pentium
8786 *) Eliminate generated files from CVS. Reorder tests to regenerate files
8787 before they are needed.
8790 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
8794 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
8796 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
8797 changed SSLeay to OpenSSL in version strings.
8798 [Ralf S. Engelschall]
8800 *) Some fixups to the top-level documents.
8803 *) Fixed the nasty bug where rsaref.h was not found under compile-time
8804 because the symlink to include/ was missing.
8805 [Ralf S. Engelschall]
8807 *) Incorporated the popular no-RSA/DSA-only patches
8808 which allow to compile a RSA-free SSLeay.
8809 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
8811 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
8812 when "ssleay" is still not found.
8813 [Ralf S. Engelschall]
8815 *) Added more platforms to Configure: Cray T3E, HPUX 11,
8816 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
8818 *) Updated the README file.
8819 [Ralf S. Engelschall]
8821 *) Added various .cvsignore files in the CVS repository subdirs
8822 to make a "cvs update" really silent.
8823 [Ralf S. Engelschall]
8825 *) Recompiled the error-definition header files and added
8826 missing symbols to the Win32 linker tables.
8827 [Ralf S. Engelschall]
8829 *) Cleaned up the top-level documents;
8830 o new files: CHANGES and LICENSE
8831 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
8832 o merged COPYRIGHT into LICENSE
8833 o removed obsolete TODO file
8834 o renamed MICROSOFT to INSTALL.W32
8835 [Ralf S. Engelschall]
8837 *) Removed dummy files from the 0.9.1b source tree:
8838 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
8839 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
8840 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
8841 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
8842 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
8843 [Ralf S. Engelschall]
8845 *) Added various platform portability fixes.
8848 *) The Genesis of the OpenSSL rpject:
8849 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
8850 Young and Tim J. Hudson created while they were working for C2Net until
8852 [The OpenSSL Project]
8855 Changes between 0.9.0b and 0.9.1b [not released]
8857 *) Updated a few CA certificates under certs/
8860 *) Changed some BIGNUM api stuff.
8863 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
8864 DGUX x86, Linux Alpha, etc.
8867 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
8868 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
8872 *) Add -strparse option to asn1pars program which parses nested
8874 [Dr Stephen Henson <shenson@bigfoot.com>]
8876 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
8879 *) DSA fix for "ca" program.
8882 *) Added "-genkey" option to "dsaparam" program.
8885 *) Added RIPE MD160 (rmd160) message digest.
8888 *) Added -a (all) option to "ssleay version" command.
8891 *) Added PLATFORM define which is the id given to Configure.
8894 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
8897 *) Extended the ASN.1 parser routines.
8900 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
8903 *) Added a BN_CTX to the BN library.
8906 *) Fixed the weak key values in DES library
8909 *) Changed API in EVP library for cipher aliases.
8912 *) Added support for RC2/64bit cipher.
8915 *) Converted the lhash library to the crypto/mem.c functions.
8918 *) Added more recognized ASN.1 object ids.
8921 *) Added more RSA padding checks for SSL/TLS.
8924 *) Added BIO proxy/filter functionality.
8927 *) Added extra_certs to SSL_CTX which can be used
8928 send extra CA certificates to the client in the CA cert chain sending
8929 process. It can be configured with SSL_CTX_add_extra_chain_cert().
8932 *) Now Fortezza is denied in the authentication phase because
8933 this is key exchange mechanism is not supported by SSLeay at all.
8936 *) Additional PKCS1 checks.
8939 *) Support the string "TLSv1" for all TLS v1 ciphers.
8942 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
8943 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
8946 *) Fixed a few memory leaks.
8949 *) Fixed various code and comment typos.
8952 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
8953 bytes sent in the client random.
8954 [Edward Bishop <ebishop@spyglass.com>]
projects / oweals / openssl.git / blob