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 OpenSSL CHANGES
 Changes between 0.9.3a and 0.9.4

  *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
     function prototypes in pem.h, also change util/mkdef.pl to add the
     necessary function names. 
     [Steve Henson]

  *) mk1mf.pl (used by Windows builds) did not properly read the
     options set by Configure in the top level Makefile; typo fixed,
     now "no-idea" etc. works as intended.
     [Bodo Moeller]

  *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
     file to be loaded from a BIO or FILE pointer. The BIO version will
     for example allow memory BIOs to contain config info.
     [Steve Henson]

  *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
     Whoever hopes to achieve shared-library compatibility across versions
     must use this, not the compile-time macro.
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     (Exercise 0.9.4: Which is the minimum library version required by
     such programs?)
     Note: All this applies only to multi-threaded programs, others don't
     need locks.
     [Bodo Moeller]

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  *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
     through a BIO pair triggered the default case, i.e.
     SSLerr(...,SSL_R_UNKNOWN_STATE).
     [Bodo Moeller]

  *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
     can use the SSL library even if none of the specific BIOs is
     appropriate.
     [Bodo Moeller]

  *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
     for the encoded length.
     [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]

  *) Add initial documentation of the X509V3 functions.
     [Steve Henson]

  *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and 
     PEM_write_bio_PKCS8PrivateKey() that are equivalent to
     PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
     secure PKCS#8 private key format with a high iteration count.
     [Steve Henson]

  *) Fix determination of Perl interpreter: A perl or perl5
     _directory_ in $PATH was also accepted as the interpreter.
     [Ralf S. Engelschall]

  *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
     wrong with it but it was very old and did things like calling
     PEM_ASN1_read() directly and used MD5 for the hash not to mention some
     unusual formatting.
     [Steve Henson]

  *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
     to use the new extension code.
     [Steve Henson]

  *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
     with macros. This should make it easier to change their form, add extra
     arguments etc. Fix a few PEM prototypes which didn't have cipher as a
     constant.
     [Steve Henson]

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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
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