CSSM_DigestData man page on OSF1

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DigestData(3)							 DigestData(3)

NAME
       DigestData,  CSSM_DigestData,  CSP_DigestData  - Compute message digest
       (CDSA)

SYNOPSIS
       # include <cdsa/cssm.h>

       API:  CSSM_RETURN  CSSMAPI  CSSM_DigestData  (CSSM_CC_HANDLE  CCHandle,
       const  CSSM_DATA	 *DataBufs, uint32 DataBufCount, CSSM_DATA_PTR Digest)
       SPI: CSSM_RETURN CSSMCSPI  CSP_DigestData  (CSSM_CSP_HANDLE  CSPHandle,
       CSSM_CC_HANDLE  CCHandle,  const CSSM_CONTEXT *Context, const CSSM_DATA
       *DataBufs, uint32 DataBufCount, CSSM_DATA_PTR Digest)

LIBRARY
       Common Security Services Manager library (libcssm.so)

API PARAMETERS
       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 num‐
       ber  of DataBufs.  A pointer to the CSSM_DATA structure for the message
       digest.

SPI PARAMETERS
       The handle that describes the  add-in  cryptographic  service  provider
       module  used  to perform up calls to CSSM for the memory functions man‐
       aged by CSSM.  Pointer to CSSM_CONTEXT  structure  that	describes  the
       attributes with this context.

DESCRIPTION
       This  function  computes a message digest for all data contained in the
       set of input buffers.

NOTES FOR API
       The output is returned to the caller either by filling the caller-spec‐
       ified  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 out‐
       put 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
       The output is returned to the caller as specifed 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 repre‐
       sent an error condition.

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

SEE ALSO
       Books

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

       Reference Pages

       Functions for the CSSM API:

       CSSM_DigestDataInit(3),	CSSM_DigestDataUpdate(3),   CSSM_DigestDataFi‐
       nal(3), CSSM_DigestDataClone(3)

       Functions for the CSP SPI:

       CSP_DigestDataInit(3), CSP_DigestDataUpdate(3), CSP_DigestDataFinal(3),
       CSP_DigestDataClone(3)

								 DigestData(3)
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