[Trustedjava-support] Loading Key from Storage for Quote

[Saurabh A. <tan...@gm...>]

Hi

I am trying to do a Quote operation.
when i create the aik key and use it for quote it works for me. But
when i try to load the Aik key from persistent storage, i am unable to
do a successful quote operation.

following is the code i am using :

LoadAik_and_Do_Quote() {
		
		
/***** srk - loading policies, setting secret ******/
		
TcBlobData srkSecret =
TcTssStructFactory.newBlobData().initString("tanish", false, "ASCII");

long srkSecretMode = TcTssDefines.TSS_SECRET_MODE_PLAIN;

TcIRsaKey srk =
context_.loadKeyByUuidFromSystem(TcUuidFactory.getInstance().getUuidSRK());
		
TcIPolicy srkPolicy = srk.getUsagePolicy(); /* default policy */
srkPolicy.setSecret(srkSecretMode, srkSecret);
		
/***** aik - setting policies,secret ******/

TcBlobData aikSecret =
TcTssStructFactory.newBlobData().initString("password", false,
"ASCII");

long aikSecretMode = TcTssDefines.TSS_SECRET_MODE_PLAIN;
	
TcIPolicy aikUsgPolicy =
context_.createPolicyObject(TcTssDefines.TSS_POLICY_USAGE);


		
/***** UUID to be called from storage : 1.2.3.4.5.010203040505 ******/

TcTssUuid aikUuid = null;
short array[] =  {1,2,3,4,5,5};
aikUuid = TcTssStructFactory.newUuid().init(1, 2, 3, (short) 4,
(short) 5,array);


TcIRsaKey aikKey_ =
context_.getKeyByUuid(TcTssDefines.TSS_PS_TYPE_SYSTEM, aikUuid);
aikUsgPolicy.assignToObject(aikKey_);

TcIPolicy aikPolicy = aikKey_.getUsagePolicy();

aikUsgPolicy.setSecret(aikSecretMode,aikSecret);
		
aikKey_.loadKey(srk);
		
/******* quote ************/

TcIPcrComposite pcrs = context_.createPcrCompositeObject(0);

for (int i = 0; i < pcrList.length; i++) {
			pcrs.selectPcrIndex(pcrList[i]);
}

TcTssValidation validation = TcTssStructFactory.newValidation();
validation.setExternalData(nonce);
		
// do the quote and return the resulting blob
validation = tpm.quote(aikKey_, pcrs, validation);   // <----- Error line

}

==================================================

I get the following error :

TSPI call error:
  error code:    0x01
  error message: TPM layer: Authentication failed
	at iaik.tss.impl.jni.TcBaseObject.handleRetCode(TcBaseObject.java:102)
	at iaik.tss.impl.jni.TcTpm.quote(TcTpm.java:482)
	at "Error line"

==================================================

i using correct passwords for srk and aik.
What may be going wrong ??


regards
Saurabh