CHANGES

 OpenSSL CHANGES
 _______________

 Changes between 0.9.6 and 0.9.7  [xx XXX 2001]

     OpenSSL 0.9.6a/0.9.6b (bugfix releases, 5 Apr 2001 and 9 July 2001)
     and OpenSSL 0.9.7 were developed in parallel, based on OpenSSL 0.9.6.  

     Change log entries are tagged as follows:
         -) applies to 0.9.6a/0.9.6b/0.9.6c only
         *) applies to 0.9.6a/0.9.6b/0.9.6c and 0.9.7
         +) applies to 0.9.7 only

  +) Make it possible to produce shared libraries on ReliantUNIX.
     [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]

  *) Add the configuration target linux-s390x.
     [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]

  +) Add the configuration target debug-linux-ppro.
     Make 'openssl rsa' use the general key loading routines
     implemented in apps.c, and make those routines able to
     handle the key format FORMAT_NETSCAPE and the variant
     FORMAT_IISSGC.
     [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]

  *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
     [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]

  +) Add -keyform to rsautl, and document -engine.
     [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]

  +) Change BIO_new_file (crypto/bio/bss_file.c) to use new
     BIO_R_NO_SUCH_FILE error code rather than the generic
     ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
     [Ben Laurie]

  +) Add new functions
          ERR_peek_last_error
          ERR_peek_last_error_line
          ERR_peek_last_error_line_data.
     These are similar to
          ERR_peek_error
          ERR_peek_error_line
          ERR_peek_error_line_data,
     but report on the latest error recorded rather than the first one
     still in the error queue.
     [Ben Laurie, Bodo Moeller]
        
  +) default_algorithms option in ENGINE config module. This allows things
     like:
     default_algorithms = ALL
     default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
     [Steve Henson]

  +) Prelminary ENGINE config module.
     [Steve Henson]

  *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
     ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
     variable as an indication that a ClientHello message has been
     received.  As the flag value will be lost between multiple
     invocations of ssl3_accept when using non-blocking I/O, the
     function may not be aware that a handshake has actually taken
     place, thus preventing a new session from being added to the
     session cache.

     To avoid this problem, we now set s->new_session to 2 instead of
     using a local variable.
     [Lutz Jaenicke, Bodo Moeller]

  *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
     if the SSL_R_LENGTH_MISMATCH error is detected.
     [Geoff Thorpe, Bodo Moeller]

  +) New experimental application configuration code.
     [Steve Henson]

  *) New 'shared_ldflag' column in Configure platform table.
     [Richard Levitte]

  *) Fix EVP_CIPHER_mode macro.
     ["Dan S. Camper" <dan@bti.net>]

  +) Change the AES code to follow the same name structure as all other
     symmetric ciphers, and behave the same way.  Move everything to
     the directory crypto/aes, thereby obsoleting crypto/rijndael.
     [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]

  *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
     type, we must throw them away by setting rr->length to 0.
     [D P Chang <dpc@qualys.com>]

  -) OpenSSL 0.9.6c released [21 dec 2001]

  +) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
     [Ben Laurie and Theo de Raadt]

  *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
     <Dominikus.Scherkl@biodata.com>.  (The previous implementation
     worked incorrectly for those cases where  range = 10..._2  and
     3*range  is two bits longer than  range.)
     [Bodo Moeller]

  *) Only add signing time to PKCS7 structures if it is not already
     present.
     [Steve Henson]

  *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
     OBJ_ld_ce should be OBJ_id_ce.
     Also some ip-pda OIDs in crypto/objects/objects.txt were
     incorrect (cf. RFC 3039).
     [Matt Cooper, Frederic Giudicelli, Bodo Moeller]

  +) Add option to output public keys in req command.
     [Massimiliano Pala madwolf@openca.org]

  *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
     returns early because it has nothing to do.
     [Andy Schneider <andy.schneider@bjss.co.uk>]

  *) [In 0.9.6c-engine and 0.9.7 release:]
     Fix mutex callback return values in crypto/engine/hw_ncipher.c.
     [Andy Schneider <andy.schneider@bjss.co.uk>]

  -) [In 0.9.6c-engine release:]
     Add support for Cryptographic Appliance's keyserver technology.
     (Use engine 'keyclient')
     [Cryptographic Appliances and Geoff Thorpe]

  *) Add a configuration entry for OS/390 Unix.  The C compiler 'c89'
     is called via tools/c89.sh because arguments have to be
     rearranged (all '-L' options must appear before the first object
     modules).
     [Richard Shapiro <rshapiro@abinitio.com>]

  +) Use wNAFs in EC_POINTs_mul() for improved efficiency
     (up to about 10% better than before for P-192 and P-224).
     [Bodo Moeller]

  -) [In 0.9.6c-engine release:]
     Add support for Broadcom crypto accelerator cards, backported
     from 0.9.7.
     [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]

  -) [In 0.9.6c-engine release:]
     Add support for SureWare crypto accelerator cards from 
     Baltimore Technologies.  (Use engine 'sureware')
     [Baltimore Technologies and Mark Cox]

  -) [In 0.9.6c-engine release:]
     Add support for crypto accelerator cards from Accelerated
     Encryption Processing, www.aep.ie.  (Use engine 'aep')
     [AEP Inc. and Mark Cox]

  *) Add a configuration entry for gcc on UnixWare.
     [Gary Benson <gbenson@redhat.com>]

  +) New functions/macros

          SSL_CTX_set_msg_callback(ctx, cb)
          SSL_CTX_set_msg_callback_arg(ctx, arg)
          SSL_set_msg_callback(ssl, cb)
          SSL_set_msg_callback_arg(ssl, arg)

     to request calling a callback function

          void cb(int write_p, int version, int content_type,
                  const void *buf, size_t len, SSL *ssl, void *arg)

     whenever a protocol message has been completely received
     (write_p == 0) or sent (write_p == 1).  Here 'version' is the
     protocol version  according to which the SSL library interprets
     the current protocol message (SSL2_VERSION, SSL3_VERSION, or
     TLS1_VERSION).  'content_type' is 0 in the case of SSL 2.0, or
     the content type as defined in the SSL 3.0/TLS 1.0 protocol
     specification (change_cipher_spec(20), alert(21), handshake(22)).
     'buf' and 'len' point to the actual message, 'ssl' to the
     SSL object, and 'arg' is the application-defined value set by
     SSL[_CTX]_set_msg_callback_arg().

     'openssl s_client' and 'openssl s_server' have new '-msg' options
     to enable a callback that displays all protocol messages.
     [Bodo Moeller]

  *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
     messages are stored in a single piece (fixed-length part and
     variable-length part combined) and fix various bugs found on the way.
     [Bodo Moeller]

  +) Change the shared library support so shared libraries are built as
     soon as the corresponding static library is finished, and thereby get
     openssl and the test programs linked against the shared library.
     This still only happens when the keyword "shard" has been given to
     the configuration scripts.

     NOTE: shared library support is still an experimental thing, and
     backward binary compatibility is still not guaranteed.
     ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]