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// This file was extracted from the TCG Published
// Trusted Platform Module Library
// Part 3: Commands
// Family "2.0"
// Level 00 Revision 01.16
// October 30, 2014
#include "InternalRoutines.h"
#include "PolicyAuthValue_fp.h"
#include "Policy_spt_fp.h"
TPM_RC
TPM2_PolicyAuthValue(
PolicyAuthValue_In *in // IN: input parameter list
)
{
SESSION *session;
TPM_CC commandCode = TPM_CC_PolicyAuthValue;
HASH_STATE hashState;
// Internal Data Update
// Get pointer to the session structure
session = SessionGet(in->policySession);
// Update policy hash
// policyDigestnew = hash(policyDigestold || TPM_CC_PolicyAuthValue)
// Start hash
CryptStartHash(session->authHashAlg, &hashState);
// add old digest
CryptUpdateDigest2B(&hashState, &session->u2.policyDigest.b);
// add commandCode
CryptUpdateDigestInt(&hashState, sizeof(TPM_CC), &commandCode);
// complete the hash and get the results
CryptCompleteHash2B(&hashState, &session->u2.policyDigest.b);
// update isAuthValueNeeded bit in the session context
session->attributes.isAuthValueNeeded = SET;
session->attributes.isPasswordNeeded = CLEAR;
return TPM_RC_SUCCESS;
}