1 // This file was extracted from the TCG Published 2 // Trusted Platform Module Library 3 // Part 3: Commands 4 // Family "2.0" 5 // Level 00 Revision 01.16 6 // October 30, 2014 7 8 #include "InternalRoutines.h" 9 #include "PolicyOR_fp.h" 10 #include "Policy_spt_fp.h" 11 // 12 // 13 // Error Returns Meaning 14 // 15 // TPM_RC_VALUE no digest in pHashList matched the current value of policyDigest for 16 // policySession 17 // 18 TPM_RC 19 TPM2_PolicyOR( 20 PolicyOR_In *in // IN: input parameter list 21 ) 22 { 23 SESSION *session; 24 UINT32 i; 25 26 // Input Validation and Update 27 28 // Get pointer to the session structure 29 session = SessionGet(in->policySession); 30 31 // Compare and Update Internal Session policy if match 32 for(i = 0; i < in->pHashList.count; i++) 33 { 34 if( session->attributes.isTrialPolicy == SET 35 || (Memory2BEqual(&session->u2.policyDigest.b, 36 &in->pHashList.digests[i].b)) 37 ) 38 { 39 // Found a match 40 HASH_STATE hashState; 41 TPM_CC commandCode = TPM_CC_PolicyOR; 42 43 // Start hash 44 session->u2.policyDigest.t.size = CryptStartHash(session->authHashAlg, 45 &hashState); 46 // Set policyDigest to 0 string and add it to hash 47 MemorySet(session->u2.policyDigest.t.buffer, 0, 48 session->u2.policyDigest.t.size); 49 CryptUpdateDigest2B(&hashState, &session->u2.policyDigest.b); 50 51 // add command code 52 CryptUpdateDigestInt(&hashState, sizeof(TPM_CC), &commandCode); 53 54 // Add each of the hashes in the list 55 for(i = 0; i < in->pHashList.count; i++) 56 { 57 // Extend policyDigest 58 CryptUpdateDigest2B(&hashState, &in->pHashList.digests[i].b); 59 } 60 // Complete digest 61 CryptCompleteHash2B(&hashState, &session->u2.policyDigest.b); 62 63 return TPM_RC_SUCCESS; 64 } 65 } 66 // None of the values in the list matched the current policyDigest 67 return TPM_RC_VALUE + RC_PolicyOR_pHashList; 68 } 69
