CSSM_VerifyMacUpdate

Purpose

This function updates the staged message authentication code verification operation.

Format

CSSM_RETURN CSSMAPI CSSM_VerifyMacUpdate 
               (CSSM_CC_HANDLE CCHandle,
               const CSSM_DATA_PTR DataBufs,
               uint32 DataBufCount)

Parameters

Input

CCHandle: The handle that describes the context of this cryptographic operation used to link to the CSP-managed information.
DataBufs: A pointer to a vector of CSSM_DATA structures that contain the data to be operated on.
DataBufCount: The number of DataBufs.

Return Value

CSSM_OK if the function was successful. CSSM_FAIL if an error occurred. Use CSSM_GetError to determine the exact error.

Related Information

CSSM_VerifyMac
CSSM_VerifyMacInit
CSSM_VerifyMacFinal