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 OpenSSL CHANGES
 Changes between 0.9.3a and 0.9.4

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  *) Add to configuration table a new entry that can specify an alternative
     name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
     according to Mark Crispin <MRC@Panda.COM>.
     [Bodo Moeller]

  *) DES CBC did not update the IV. Weird.
     [Ben Laurie]
     des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
     Changing the behaviour of the former might break existing programs --
     where IV updating is needed, des_ncbc_encrypt can be used.
  *) When bntest is run from "make test" it drives bc to check its
     calculations, as well as internally checking them. If an internal check
     fails, it needs to cause bc to give a non-zero result or make test carries
     on without noticing the failure. Fixed.
     [Ben Laurie]

  *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
     used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
     ciphers. NOTE: although the key derivation function has been verified
     against some published test vectors it has not been extensively tested
     yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
     of v2.0.
     [Steve Henson]

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  *) Instead of "mkdir -p", which is not fully portable, use new
     Perl script "util/mkdir-p.pl".
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     [Bodo Moeller]
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  *) Rewrite the way password based encryption (PBE) is handled. It used to
     assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
     structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
     but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
     the 'parameter' field of the AlgorithmIdentifier is passed to the
     underlying key generation function so it must do its own ASN1 parsing.
     This has also changed the EVP_PBE_CipherInit() function which now has a
     'parameter' argument instead of literal salt and iteration count values
     and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
     [Steve Henson]

  *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
     and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
     Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
     KEY" because this clashed with PKCS#8 unencrypted string. Since this
     value was just used as a "magic string" and not used directly its
     value doesn't matter.
  *) Introduce some semblance of const correctness to BN. Shame C doesn't
     support mutable.
     [Ben Laurie]

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  *) "linux-sparc64" configuration (ultrapenguin).
     [Ray Miller <ray.miller@oucs.ox.ac.uk>]
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     "linux-sparc" configuration.
     [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
  *) config now generates no-xxx options for missing ciphers.
     [Ulf Möller]

  *) Support the EBCDIC character set (work in progress).
     File ebcdic.c not yet included because it has a different license.
     [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]

  *) Support BS2000/OSD-POSIX.
     [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]

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  *) Make callbacks for key generation use void * instead of char *.
     [Ben Laurie]

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  *) Make S/MIME samples compile (not yet tested).
     [Ben Laurie]

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  *) Additional typesafe stacks.
     [Ben Laurie]

  *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
     [Bodo Moeller]

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 Changes between 0.9.3 and 0.9.3a  [29 May 1999]
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  *) New configuration variant "sco5-gcc".

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  *) Updated some demos.
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     [Sean O Riordain, Wade Scholine]
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  *) Add missing BIO_free at exit of pkcs12 application.
     [Wu Zhigang]

  *) Fix memory leak in conf.c.
     [Steve Henson]

  *) Updates for Win32 to assembler version of MD5.
     [Steve Henson]

  *) Set #! path to perl in apps/der_chop to where we found it
     instead of using a fixed path.
     [Bodo Moeller]

  *) SHA library changes for irix64-mips4-cc.
     [Andy Polyakov]

  *) Improvements for VMS support.
     [Richard Levitte]

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 Changes between 0.9.2b and 0.9.3  [24 May 1999]
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  *) Bignum library bug fix. IRIX 6 passes "make test" now!
     This also avoids the problems with SC4.2 and unpatched SC5.  
     [Andy Polyakov <appro@fy.chalmers.se>]

  *) New functions sk_num, sk_value and sk_set to replace the previous macros.
     These are required because of the typesafe stack would otherwise break 
     existing code. If old code used a structure member which used to be STACK
     and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
     sk_num or sk_value it would produce an error because the num, data members
     are not present in STACK_OF. Now it just produces a warning. sk_set
     replaces the old method of assigning a value to sk_value
     (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
     that does this will no longer work (and should use sk_set instead) but
     this could be regarded as a "questionable" behaviour anyway.
     [Steve Henson]

  *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
     correctly handle encrypted S/MIME data.
     [Steve Henson]

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  *) Change type of various DES function arguments from des_cblock
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     (which means, in function argument declarations, pointer to char)
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     to des_cblock * (meaning pointer to array with 8 char elements),
     which allows the compiler to do more typechecking; it was like
     that back in SSLeay, but with lots of ugly casts.

     Introduce new type const_des_cblock.
     [Bodo Moeller]

  *) Reorganise the PKCS#7 library and get rid of some of the more obvious
     problems: find RecipientInfo structure that matches recipient certificate
     and initialise the ASN1 structures properly based on passed cipher.
     [Steve Henson]

  *) Belatedly make the BN tests actually check the results.
     [Ben Laurie]

  *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
     to and from BNs: it was completely broken. New compilation option
     NEG_PUBKEY_BUG to allow for some broken certificates that encode public
     key elements as negative integers.
     [Steve Henson]

  *) Reorganize and speed up MD5.
     [Andy Polyakov <appro@fy.chalmers.se>]

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  *) VMS support.
     [Richard Levitte <richard@levitte.org>]
  *) New option -out to asn1parse to allow the parsed structure to be
     output to a file. This is most useful when combined with the -strparse
     option to examine the output of things like OCTET STRINGS.
     [Steve Henson]

  *) Make SSL library a little more fool-proof by not requiring any longer
     that SSL_set_{accept,connect}_state be called before
     SSL_{accept,connect} may be used (SSL_set_..._state is omitted
     in many applications because usually everything *appeared* to work as
     intended anyway -- now it really works as intended).
     [Bodo Moeller]

  *) Move openssl.cnf out of lib/.
     [Ulf Möller]

  *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
     -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
     -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+ 
     [Ralf S. Engelschall]

  *) Various fixes to the EVP and PKCS#7 code. It may now be able to
     handle PKCS#7 enveloped data properly.
     [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]

  *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
     copying pointers.  The cert_st handling is changed by this in
     various ways (and thus what used to be known as ctx->default_cert
     is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
     any longer when s->cert does not give us what we need).
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