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57 lines
1.6 KiB
57 lines
1.6 KiB
// 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 "PolicyCommandCode_fp.h" |
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// |
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// |
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// Error Returns Meaning |
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// |
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// TPM_RC_VALUE commandCode of policySession previously set to a different value |
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// |
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TPM_RC |
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TPM2_PolicyCommandCode( |
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PolicyCommandCode_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_PolicyCommandCode; |
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HASH_STATE hashState; |
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// Input validation |
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// Get pointer to the session structure |
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session = SessionGet(in->policySession); |
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if(session->commandCode != 0 && session->commandCode != in->code) |
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return TPM_RC_VALUE + RC_PolicyCommandCode_code; |
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if(!CommandIsImplemented(in->code)) |
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return TPM_RC_POLICY_CC + RC_PolicyCommandCode_code; |
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// Internal Data Update |
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// Update policy hash |
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// policyDigestnew = hash(policyDigestold || TPM_CC_PolicyCommandCode || code) |
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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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// add input commandCode |
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CryptUpdateDigestInt(&hashState, sizeof(TPM_CC), &in->code); |
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// complete the hash and get the results |
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CryptCompleteHash2B(&hashState, &session->u2.policyDigest.b); |
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// update commandCode value in session context |
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session->commandCode = in->code; |
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return TPM_RC_SUCCESS; |
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}
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