GenerateMacFinal

NAME
  GenerateMacFinal,
  CSSM_GenerateMacFinal,
  CSP_GenerateMacFinal  - Finalize the staged message authentication
                          code (CDSA)

SYNOPSIS
  # include <cssm.h>

   API:
       CSSM_RETURN CSSMAPI CSSM_GenerateMacFinal
       (CSSM_CC_HANDLE CCHandle,
       CSSM_DATA_PTR Mac)
   SPI:
       CSSM_RETURN CSSMCSPI CSP_GenerateMacFinal
       (CSSM_CSP_HANDLE CSPHandle,
       CSSM_CC_HANDLE CCHandle,
       CSSM_DATA_PTR Mac)

LIBRARY
  Common Security Services Manager library (CDSA$INCSSM300_SHR.EXE)

API PARAMETERS
  CCHandle (input)
          The handle that describes the context of this cryptographic
          operation used to link to the CSP-managed information.

  Mac (output)
          A pointer to the CSSM_DATA structure for the message
          authentication code.

SPI PARAMETERS
  CSPHandle (input)
          The handle that describes the add-in cryptographic service
          provider module used to perform calls to CSSM for the memory
          functions managed by CSSM.

DESCRIPTION
  This function finalizes the staged message authentication code
  function.

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

RETURN VALUE
  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
  Errors are described in the CDSA technical standard.  See CDSA.

       CSSMERR_CSP_OUTPUT_LENGTH_ERROR

SEE ALSO
  Books

  Intel CDSA Application Developer's Guide (see CDSA)

  Other Help Topics

  Functions for the CSSM API:

      CSSM_GenerateMac
      CSSM_GenerateMacInit
      CSSM_GenerateMacUpdate

  Functions for the CSP SPI:

      CSP_GenerateMac
      CSP_GenerateMacInit
      CSP_GenerateMacUpdate