NAME

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

SYNOPSIS

# 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

Common Security Services Manager library (libcssm.so)

API PARAMETERS

CCHandle (input)
The handle that describes the context of this cryptographic operation used to link to the CSP-managed information.

DataBufs (input)
A pointer to a vector of CSSM_DATA structures that contain the data to be operated on.

DataBufCount (input)
The number of DataBufs.

SPI PARAMETERS

CSPHandle (input)
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 buffers. 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 represent 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)