HP OpenVMS Systems Documentation

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HP Open Source Security for OpenVMS Volume 1: Common Data Security Architecture > CDSA API Functions

DigestDataFinal

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NAME

CSSM_DigestDataFinal, CSP_DigestDataFinal — Finalize the staged message digest (CDSA)

SYNOPSIS

# include <cssm.h>
API:
CSSM_RETURN CSSMAPI CSSM_DigestDataFinal
(CSSM_CC_HANDLE CCHandle,
CSSM_DATA_PTR Digest)
SPI:
CSSM_RETURN CSSMCSPI CSP_DigestDataFinal
(CSSM_CSP_HANDLE CSPHandle,
CSSM_CC_HANDLE CCHandle,
CSSM_DATA_PTR Digest)

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.

Digest (output) 

A pointer to the CSSM_DATA structure for the message digest.

SPI PARAMETERS

CSPHandle (input)
  

The handle that describes the add-in Cryptographic Service Provider module used to perform up calls to CSSM for the memory functions managed by CSSM.

DESCRIPTION

This function finalizes the staged message digest function.

NOTES FOR 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 FOR 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. .

CSSMERR_CSP_OUTPUT_LENGTH_ERROR

SEE ALSO

Books

Intel CDSA Application Developer's Guide

Online Help

Functions for the CSSM API:

CSSM_DigestData, CSSM_DigestDataInit, CSSM_DigestDataUpdate, CSSM_DigestDataClone

Functions for the CSP SPI:

CSP_DigestData, CSP_DigestDataInit, CSP_DigestDataUpdate, CSP_DigestDataClone