DigestDataFinal(3)DigestDataFinal(3)NAME
DigestDataFinal, CSSM_DigestDataFinal, CSP_DigestDataFinal - Finalize
the staged message digest (CDSA)
SYNOPSIS
# include <cdsa/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 (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 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.
DESCRIPTION
This function finalizes the staged message digest function.
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 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 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_DigestData(3), CSSM_DigestDataInit(3), CSSM_DigestDataUpdate(3),
CSSM_DigestDataClone(3)
Functions for the CSP SPI:
CSP_DigestData(3), CSP_DigestDataInit(3), CSP_DigestDataUpdate(3),
CSP_DigestDataClone(3)DigestDataFinal(3)