GenerateMacUpdate(3)GenerateMacUpdate(3)NAME
GenerateMacUpdate, CSSM_GenerateMacUpdate, CSP_GenerateMacUpdate - Con‐
tinue the staged process of computing a message authentication code
(CDSA)
SYNOPSIS
# include <cdsa/cssm.h>
API: CSSM_RETURN CSSMAPI CSSM_GenerateMacUpdate (CSSM_CC_HANDLE CCHan‐
dle, const CSSM_DATA *DataBufs, uint32 DataBufCount) SPI: CSSM_RETURN
CSSMCSPI CSP_GenerateMacUpdate (CSSM_CSP_HANDLE CSPHandle, CSSM_CC_HAN‐
DLE CCHandle, const CSSM_DATA *DataBufs, uint32 DataBufCount)
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.
SPI PARAMETERS
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
This function continues the staged process of computing a message
authentication code over all data contained in the set of input buf‐
fers. The authentication code will be returned as a result of the final
code generation step.
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).
None specific to this call.
SEE ALSO
Books
Intel CDSA Application Developer's Guide (see CDSA_intro(3))
Reference Pages
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)