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 OpenSSL CHANGES
 Changes between 0.9.6 and 0.9.7  [xx XXX 2000]

  *) Add additional OCSP certificate checks. These are those specified
     in RFC2560. This consists of two separate checks: the CA of the
     certificate being checked must either be the OCSP signer certificate
     or the issuer of the OCSP signer certificate. In the latter case the
     OCSP signer certificate must contain the OCSP signing extended key
     usage. This check is performed by attempting to match the OCSP
     signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
     in the OCSP_CERTID structures of the response.
     [Steve Henson]

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  *) Initial OCSP certificate verification added to OCSP_basic_verify()
     and related routines. This uses the standard OpenSSL certificate
     verify routines to perform initial checks (just CA validity) and
     to obtain the certificate chain. Then additional checks will be
     performed on the chain. Currently the root CA is checked to see
     if it is explicitly trusted for OCSP signing. This is used to set
     a root CA as a global signing root: that is any certificate that
     chains to that CA is an acceptable OCSP signing certificate.
     [Steve Henson]

  *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
     extensions from a separate configuration file.
     As when reading extensions from the main configuration file,
     the '-extensions ...' option may be used for specifying the
     section to use.
     [Massimiliano Pala <madwolf@comune.modena.it>]

  *) Change PKCS12_key_gen_asc() so it can cope with non null
     terminated strings whose length is passed in the passlen
     parameter, for example from PEM callbacks. This was done
     by adding an extra length parameter to asc2uni().
     [Steve Henson, reported by <oddissey@samsung.co.kr>]

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  *) New OCSP utility. Allows OCSP requests to be generated or
     read. The request can be sent to a responder and the output
     parsed, outputed or printed in text form. Not complete yet:
     still needs to check the OCSP response validity.
     [Steve Henson]

  *) New subcommands for 'openssl ca':
     'openssl ca -status <serial>' prints the status of the cert with
     the given serial number (according to the index file).
     'openssl ca -updatedb' updates the expiry status of certificates
     in the index file.
     [Massimiliano Pala <madwolf@comune.modena.it>]

  *) New '-newreq-nodes' command option to CA.pl.  This is like
     '-newreq', but calls 'openssl req' with the '-nodes' option
     so that the resulting key is not encrypted.
     [Damien Miller <djm@mindrot.org>]

  *) New configuration for the GNU Hurd.
     [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]

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  *) Initial code to implement OCSP basic response verify. This
     is currently incomplete. Currently just finds the signer's
     certificate and verifies the signature on the response.
     [Steve Henson]

  *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
     value of OPENSSLDIR.  This is available via the new '-d' option
     to 'openssl version', and is also included in 'openssl version -a'.
     [Bodo Moeller]

  *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
     call failed, free the DSA structure.
     [Bodo Moeller]

  *) Allowing defining memory allocation callbacks that will be given
     file name and line number information in additional arguments
     (a const char* and an int).  The basic functionality remains, as
     well as the original possibility to just replace malloc(),
     realloc() and free() by functions that do not know about these
     additional arguments.  To register and find out the current
     settings for extended allocation functions, the following
     functions are provided:

	CRYPTO_set_mem_ex_functions
	CRYPTO_set_locked_mem_ex_functions
	CRYPTO_get_mem_ex_functions
	CRYPTO_get_locked_mem_ex_functions

     These work the same way as CRYPTO_set_mem_functions and friends.
     CRYPTO_get_[locked_]mem_functions now writes 0 where such an
     extended allocation function is enabled.
     Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
     a conventional allocation function is enabled.
     [Richard Levitte, Bodo Moeller]
  *) Fix to uni2asc() to cope with zero length Unicode strings.
     These are present in some PKCS#12 files.
     [Steve Henson]

  *) Finish off removing the remaining LHASH function pointer casts.
     There should no longer be any prototype-casting required when using
     the LHASH abstraction, and any casts that remain are "bugs". See
     the callback types and macros at the head of lhash.h for details
     (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
  *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
     If an EGD or PRNGD is running and enough entropy is returned, automatic
     seeding like with /dev/[u]random will be performed.
     Positions tried are: /etc/entropy, /var/run/egd-pool.
     [Lutz Jaenicke]

  *) Change the Unix RAND_poll() variant to be able to poll several
     random devices, as specified by DEVRANDOM, until a sufficient amount
     of data has been collected.   We spend at most 10 ms on each file
     (select timeout) and read in non-blocking mode.  DEVRANDOM now
     defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
     (previously it was just the string "/dev/urandom"), so on typical
     platforms the 10 ms delay will never occur.
     Also separate out the Unix variant to its own file, rand_unix.c.
     For VMS, there's a currently-empty rand_vms.c.
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  *) Move OCSP client related routines to ocsp_cl.c. These
     provide utility functions which an application needing
     to issue a request to an OCSP responder and analyse the
     response will typically need: as opposed to those which an
     OCSP responder itself would need which will be added later.

     OCSP_request_sign() signs an OCSP request with an API similar
     to PKCS7_sign(). OCSP_response_status() returns status of OCSP
     response. OCSP_response_get1_basic() extracts basic response
     from response. OCSP_resp_find_status(): finds and extracts status
     information from an OCSP_CERTID structure (which will be created
     when the request structure is built). These are built from lower
     level functions which work on OCSP_SINGLERESP structures but
     wont normally be used unless the application wishes to examine
     extensions in the OCSP response for example.

     Replace nonce routines with a pair of functions.
     OCSP_request_add1_nonce() adds a nonce value and optionally
     generates a random value. OCSP_check_nonce() checks the
     validity of the nonce in an OCSP response.
     [Steve Henson]

  *) Change function OCSP_request_add() to OCSP_request_add0_id().
     This doesn't copy the supplied OCSP_CERTID and avoids the
     need to free up the newly created id. Change return type
     to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
     This can then be used to add extensions to the request.
     Deleted OCSP_request_new(), since most of its functionality
     is now in OCSP_REQUEST_new() (and the case insensitive name
     clash) apart from the ability to set the request name which
     will be added elsewhere.
     [Steve Henson]

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  *) Update OCSP API. Remove obsolete extensions argument from
     various functions. Extensions are now handled using the new
     OCSP extension code. New simple OCSP HTTP function which 
     can be used to send requests and parse the response.
     [Steve Henson]

  *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
     ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
     uses the special reorder version of SET OF to sort the attributes
     and reorder them to match the encoded order. This resolves a long
     standing problem: a verify on a PKCS7 structure just after signing
     it used to fail because the attribute order did not match the
     encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
     it uses the received order. This is necessary to tolerate some broken
     software that does not order SET OF. This is handled by encoding
     as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
     to produce the required SET OF.
     [Steve Henson]

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  *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
     OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
     files to get correct declarations of the ASN.1 item variables.
     [Richard Levitte]

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  *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
     PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
     asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
     NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
     New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
     ASN1_ITEM and no wrapper functions.
     [Steve Henson]

  *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
     replace the old function pointer based I/O routines. Change most of
     the *_d2i_bio() and *_d2i_fp() functions to use these.
     [Steve Henson]

  *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
     lines, recognice more "algorithms" that can be deselected, and make
     it complain about algorithm deselection that isn't recognised.
     [Richard Levitte]

  *) New ASN1 functions to handle dup, sign, verify, digest, pack and
     unpack operations in terms of ASN1_ITEM. Modify existing wrappers
     to use new functions. Add NO_ASN1_OLD which can be set to remove
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