GenerateMacUpdate

NAME
  GenerateMacUpdate,
  CSSM_GenerateMacUpdate,
  CSP_GenerateMacUpdate - Continue the staged process of computing
                          a message authentication code (CDSA)

SYNOPSIS
  # include <cssm.h>

   API:
       CSSM_RETURN CSSMAPI CSSM_GenerateMacUpdate
       (CSSM_CC_HANDLE CCHandle,
       const CSSM_DATA *DataBufs,
       uint32 DataBufCount)
   SPI:
       CSSM_RETURN CSSMCSPI CSP_GenerateMacUpdate
       (CSSM_CSP_HANDLE CSPHandle,
       CSSM_CC_HANDLE CCHandle,
       const CSSM_DATA *DataBufs,
       uint32 DataBufCount)

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.

  DataBufs (input)
          A pointer to a vector of CSSM_DATA structures that contain
          the data to be operated on.

  DataBufCount (input)
          The number of DataBufs.

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 continues the staged process of computing a message
  authentication code over all data contained in the set of input
  buffers.  The authentication code will be returned as a result of
  the final code generation step.

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.

  None specific to this call.

SEE ALSO
  Books

  Intel CDSA Application Developer's Guide (see CDSA)

  Other Help Topics

  Functions for the CSSM API:

      CSSM_GenerateMac
      CSSM_GenerateMacInit
      CSSM_GenerateMacFinal

  Functions for the CSP SPI:

      CSP_GenerateMac
      CSP_GenerateMacInit
      CSP_GenerateMacFinal