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VerifyMac(3)
NAME
  VerifyMac, CSSM_VerifyMac, CSP_VerifyMac - Verify the message
  authentication code (CDSA)

SYNOPSIS
  # include <cdsa/cssm.h>

       API:
       CSSM_RETURN CSSMAPI CSSM_VerifyMac
       (CSSM_CC_HANDLE CCHandle,
       const CSSM_DATA *DataBufs,
       uint32 DataBufCount,
       const CSSM_DATA *Mac)
       SPI:
       CSSM_RETURN CSSMCSPI CSP_VerifyMac
       (CSSM_CSP_HANDLE CSPHandle,
       CSSM_CC_HANDLE CCHandle,
       const CSSM_CONTEXT *Context,
       const CSSM_DATA *DataBufs,
       uint32 DataBufCount,
       const CSSM_DATA *Mac)

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.

  Mac (input)
	  A pointer to the CSSM_DATA structure containing the MAC to verify.

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.

  Context (input)
	  Pointer to CSSM_CONTEXT structure that describes the attributes
	  with this context.

DESCRIPTION
  This function verifies the message authentication code over all data
  contained in the set of input buffers based on the input signature.

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).

       CSSMERR_CSP_INPUT_LENGTH_ERROR
       CSSMERR_CSP_VERIFY_FAILED
       CSSMERR_CSP_INVALID_SIGNATURE

SEE ALSO
  Books

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

  Reference Pages

  Functions for the CSSM API:

  CSSM_VerifyMacInit(3), CSSM_VerifyMacUpdate(3), CSSM_VerifyMacFinal(3)

  Functions for the CSP SPI:

  CSP_VerifyMacInit(3), CSP_VerifyMacUpdate(3), CSP_VerifyMacFinal(3)

Index for Section 3

Alphabetical listing for V

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