NAME    [Toc]    [Back]

       VerifyMacUpdate, CSSM_VerifyMacUpdate, CSP_VerifyMacUpdate
       - Continue the staged process  of  verifying  the  message
       authentication code (CDSA)

SYNOPSIS    [Toc]    [Back]

       # include <cdsa/cssm.h>

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

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 a vector of CSSM_DATA structures that
       contain the  data  to  be  operated  on.   The  number  of
       DataBufs.

SPI PARAMETERS    [Toc]    [Back]

       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    [Toc]    [Back]

       This  function  continues  the staged process of verifying
       the message authentication code over all data in  the  set
       of  input  buffers.  Verification  will  be  based  on the
       authentication code presented as input when finalizing the
       staged verification process.

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).

       None specific to this call.

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_VerifyMac(3),  CSSM_VerifyMacInit(3), CSSM_VerifyMacFinal(3)

       Functions for the CSP SPI:

       CSP_VerifyMac(3),  CSP_VerifyMacInit(3),  CSP_VerifyMacFinal(3)



                                               VerifyMacUpdate(3)