52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
// This file was extracted from the TCG Published
|
|
// Trusted Platform Module Library
|
|
// Part 3: Commands
|
|
// Family "2.0"
|
|
// Level 00 Revision 01.16
|
|
// October 30, 2014
|
|
|
|
#include "InternalRoutines.h"
|
|
#include "PCR_SetAuthPolicy_fp.h"
|
|
//
|
|
//
|
|
// Error Returns Meaning
|
|
//
|
|
// TPM_RC_SIZE size of authPolicy is not the size of a digest produced by policyDigest
|
|
// TPM_RC_VALUE PCR referenced by pcrNum is not a member of a PCR policy group
|
|
//
|
|
TPM_RC
|
|
TPM2_PCR_SetAuthPolicy(
|
|
PCR_SetAuthPolicy_In *in // IN: input parameter list
|
|
)
|
|
{
|
|
UINT32 groupIndex;
|
|
|
|
TPM_RC result;
|
|
|
|
// The command needs NV update. Check if NV is available.
|
|
// A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at
|
|
// this point
|
|
result = NvIsAvailable();
|
|
if(result != TPM_RC_SUCCESS) return result;
|
|
|
|
// Input Validation:
|
|
|
|
// Check the authPolicy consistent with hash algorithm
|
|
if(in->authPolicy.t.size != CryptGetHashDigestSize(in->hashAlg))
|
|
return TPM_RC_SIZE + RC_PCR_SetAuthPolicy_authPolicy;
|
|
|
|
// If PCR does not belong to a policy group, return TPM_RC_VALUE
|
|
if(!PCRBelongsPolicyGroup(in->pcrNum, &groupIndex))
|
|
return TPM_RC_VALUE + RC_PCR_SetAuthPolicy_pcrNum;
|
|
|
|
// Internal Data Update
|
|
|
|
// Set PCR policy
|
|
gp.pcrPolicies.hashAlg[groupIndex] = in->hashAlg;
|
|
gp.pcrPolicies.policy[groupIndex] = in->authPolicy;
|
|
|
|
// Save new policy to NV
|
|
NvWriteReserved(NV_PCR_POLICIES, &gp.pcrPolicies);
|
|
|
|
return TPM_RC_SUCCESS;
|
|
}
|