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63 lines
2.0 KiB
63 lines
2.0 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 "PCR_Extend_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_Extend( |
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PCR_Extend_In *in // IN: input parameter list |
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) |
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{ |
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TPM_RC result; |
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UINT32 i; |
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// Input Validation |
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// NOTE: This function assumes that the unmarshaling function for 'digests' will |
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// have validated that all of the indicated hash algorithms are valid. If the |
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// hash algorithms are correct, the unmarshaling code will unmarshal a digest |
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// of the size indicated by the hash algorithm. If the overall size is not |
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// consistent, the unmarshaling code will run out of input data or have input |
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// data left over. In either case, it will cause an unmarshaling error and this |
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// function will not be called. |
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// For NULL handle, do nothing and return success |
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if(in->pcrHandle == TPM_RH_NULL) |
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return TPM_RC_SUCCESS; |
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// Check if the extend operation is allowed by the current command locality |
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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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// Internal Data Update |
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// Iterate input digest list to extend |
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for(i = 0; i < in->digests.count; i++) |
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{ |
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PCRExtend(in->pcrHandle, in->digests.digests[i].hashAlg, |
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CryptGetHashDigestSize(in->digests.digests[i].hashAlg), |
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(BYTE *) &in->digests.digests[i].digest); |
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} |
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return TPM_RC_SUCCESS; |
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}
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