NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

       # include <cdsa/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    [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 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    [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_GenerateMac(3), CSSM_GenerateMacInit(3),  CSSM_GenerateMacFinal(3)

       Functions for the CSP SPI:

       CSP_GenerateMac(3),   CSP_GenerateMacInit(3),   CSP_GenerateMacFinal(3)



                                             GenerateMacUpdate(3)