NAME    [Toc]    [Back]

       DigestDataFinal, CSSM_DigestDataFinal, CSP_DigestDataFinal
       - Finalize the staged message digest (CDSA)

SYNOPSIS    [Toc]    [Back]

       # include <cdsa/cssm.h>

       API:     CSSM_RETURN     CSSMAPI      CSSM_DigestDataFinal
       (CSSM_CC_HANDLE   CCHandle,   CSSM_DATA_PTR  Digest)  SPI:
       CSSM_RETURN CSSMCSPI CSP_DigestDataFinal  (CSSM_CSP_HANDLE
       CSPHandle, CSSM_CC_HANDLE CCHandle, CSSM_DATA_PTR Digest)

LIBRARY    [Toc]    [Back]

       Common Security Services Manager library (libcssm.so)

API PARAMETERS    [Toc]    [Back]

       The  handle  that  describes  the  context of this cryptographic
 operation used to link to the CSP-managed information.
   A  pointer to the CSSM_DATA structure for the message
 digest.

SPI PARAMETERS    [Toc]    [Back]

       The handle that describes the add-in cryptographic service
       provider  module  used to perform up calls to CSSM for the
       memory functions managed by CSSM.

DESCRIPTION    [Toc]    [Back]

       This function finalizes the staged  message  digest  function.

NOTES FOR API    [Toc]    [Back]

       The output is returned to the caller either by filling the
       caller-specified buffer  or  by  using  the  application's
       declared  memory  allocation  functions to allocate buffer
       space. To specify a specific, preallocated output  buffer,
       the  caller must provide an array of one or more CSSM_DATA
       structures, each containing a Length field  value  greater
       than  zero  and  a  non-NULL  data pointer field value. To
       specify automatic output buffer allocation by the CSP, the
       caller  must  provide  an  array  of one or more CSSM_DATA
       structures, each containing a Length field value equal  to
       zero  and a NULL data pointer field value. The application
       is always responsible for deallocating the memory when  it
       is no longer needed.

NOTES FOR SPI    [Toc]    [Back]

       The  output  is  returned  to  the  caller as specified in
       Buffer Management for Cryptographic Services.

RETURN VALUE    [Toc]    [Back]

       A CSSM_RETURN value indicating  success  or  specifying  a
       particular  error  condition.  The value CSSM_OK indicates
       success. All other values represent an error condition.

ERRORS    [Toc]    [Back]

       Errors are described in the CDSA technical standard.   See
       CDSA_intro(3).  CSSMERR_CSP_OUTPUT_LENGTH_ERROR

SEE ALSO    [Toc]    [Back]

       Books

       Intel    CDSA    Application    Developer's   Guide   (see
       CDSA_intro(3))

       Reference Pages    [Toc]    [Back]

       Functions for the CSSM API:

       CSSM_DigestData(3),  CSSM_DigestDataInit(3),  CSSM_DigestDataUpdate(3), CSSM_DigestDataClone(3)

       Functions for the CSP SPI:

       CSP_DigestData(3),    CSP_DigestDataInit(3),   CSP_DigestDataUpdate(3), CSP_DigestDataClone(3)



                                               DigestDataFinal(3)