44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
// This file was extracted from the TCG Published
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// Trusted Platform Module Library
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// Part 3: Commands
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// Family "2.0"
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// Level 00 Revision 01.16
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// October 30, 2014
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#include "InternalRoutines.h"
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#include "PolicyPassword_fp.h"
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#include "Policy_spt_fp.h"
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TPM_RC
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TPM2_PolicyPassword(
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PolicyPassword_In *in // IN: input parameter list
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)
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{
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SESSION *session;
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TPM_CC commandCode = TPM_CC_PolicyAuthValue;
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HASH_STATE hashState;
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// Internal Data Update
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// Get pointer to the session structure
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session = SessionGet(in->policySession);
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// Update policy hash
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// policyDigestnew = hash(policyDigestold || TPM_CC_PolicyAuthValue)
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// Start hash
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CryptStartHash(session->authHashAlg, &hashState);
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// add old digest
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CryptUpdateDigest2B(&hashState, &session->u2.policyDigest.b);
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// add commandCode
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CryptUpdateDigestInt(&hashState, sizeof(TPM_CC), &commandCode);
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// complete the digest
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CryptCompleteHash2B(&hashState, &session->u2.policyDigest.b);
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// Update isPasswordNeeded bit
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session->attributes.isPasswordNeeded = SET;
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session->attributes.isAuthValueNeeded = CLEAR;
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return TPM_RC_SUCCESS;
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}
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