66 lines
1.9 KiB
C
66 lines
1.9 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 "PCR_Event_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_LOCALITY current command locality is not allowed to extend the PCR
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// referenced by pcrHandle
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//
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TPM_RC
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TPM2_PCR_Event(
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PCR_Event_In *in, // IN: input parameter list
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PCR_Event_Out *out // OUT: output parameter list
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)
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{
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TPM_RC result;
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HASH_STATE hashState;
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UINT32 i;
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UINT16 size;
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// Input Validation
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// If a PCR extend is required
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if(in->pcrHandle != TPM_RH_NULL)
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{
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// If the PCR is not allow to extend, return error
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if(!PCRIsExtendAllowed(in->pcrHandle))
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return TPM_RC_LOCALITY;
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// If PCR is state saved and we need to update orderlyState, check NV
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// availability
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if(PCRIsStateSaved(in->pcrHandle) && gp.orderlyState != SHUTDOWN_NONE)
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{
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result = NvIsAvailable();
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if(result != TPM_RC_SUCCESS) return result;
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g_clearOrderly = TRUE;
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}
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}
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// Internal Data Update
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out->digests.count = HASH_COUNT;
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// Iterate supported PCR bank algorithms to extend
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for(i = 0; i < HASH_COUNT; i++)
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{
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TPM_ALG_ID hash = CryptGetHashAlgByIndex(i);
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out->digests.digests[i].hashAlg = hash;
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size = CryptStartHash(hash, &hashState);
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CryptUpdateDigest2B(&hashState, &in->eventData.b);
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CryptCompleteHash(&hashState, size,
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(BYTE *) &out->digests.digests[i].digest);
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if(in->pcrHandle != TPM_RH_NULL)
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PCRExtend(in->pcrHandle, hash, size,
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(BYTE *) &out->digests.digests[i].digest);
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}
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return TPM_RC_SUCCESS;
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}
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