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 "Platform.h" 10 #include "PCR_fp.h" 11 // 12 // This function is called to process a _TPM_Hash_Data() indication. 13 // 14 void 15 _TPM_Hash_Data( 16 UINT32 dataSize, // IN: size of data to be extend 17 BYTE *data // IN: data buffer 18 ) 19 { 20 UINT32 i; 21 HASH_OBJECT *hashObject; 22 TPMI_DH_PCR pcrHandle = TPMIsStarted() 23 ? PCR_FIRST + DRTM_PCR : PCR_FIRST + HCRTM_PCR; 24 25 // If there is no DRTM sequence object, then _TPM_Hash_Start 26 // was not called so this function returns without doing 27 // anything. 28 if(g_DRTMHandle == TPM_RH_UNASSIGNED) 29 return; 30 31 hashObject = (HASH_OBJECT *)ObjectGet(g_DRTMHandle); 32 pAssert(hashObject->attributes.eventSeq); 33 34 // For each of the implemented hash algorithms, update the digest with the 35 // data provided. 36 for(i = 0; i < HASH_COUNT; i++) 37 { 38 // make sure that the PCR is implemented for this algorithm 39 if(PcrIsAllocated(pcrHandle, 40 hashObject->state.hashState[i].state.hashAlg)) 41 // Update sequence object 42 CryptUpdateDigest(&hashObject->state.hashState[i], dataSize, data); 43 } 44 45 return; 46 } 47
