public override TPMCommandResponse Process()
{
byte[] nonce = NonceGenerator.GenerateByteNonce(20);
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_COMMAND, TPMOrdinals.TPM_ORD_ReadPubek);
requestBlob.Write(nonce, 0, nonce.Length);
requestBlob.WriteCmdSize();
TPMBlob responseBlob = TransmitMe(requestBlob);
responseBlob.SkipHeader();
long posStart = responseBlob.Position;
TPMPubkeyCore pubkey = TPMPubkeyCore.CreateFromTPMBlob(responseBlob);
long posEnd = responseBlob.Position;
Digest digest = new Digest(responseBlob, 20);
if (digest.CompareTo(
new HashStreamDataProvider(responseBlob, posStart, posEnd - posStart, false),
new HashByteDataProvider(nonce)) == false)
{
throw new TPMResponseException("Local digest does not match remote digest");
}
Parameters responseParams = new Parameters();
responseParams.AddValue(TPMPubkey.PARAM_TPM_PUBKEY, pubkey);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_ReadPubek, responseParams));
}
protected override TPMCommandResponse InternalProcess()
{
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_GetPubKey);
//If not loaded load now
_keyManager.LoadKey(_params.GetValueOf <string>("key"));
//KeyHandle To be inserted later
requestBlob.WriteUInt32(0);
//Blocking authorize, blocks till the user has entered the authorization data
AuthorizeMe(requestBlob);
using (_keyManager.AcquireLock())
{
//Write key handle to the first position after the header
requestBlob.SkipHeader();
requestBlob.WriteUInt32(_keyManager.IdentifierToHandle(_params.GetValueOf <string>("key")).Handle);
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
TPMPubkeyCore pubKey = TPMPubkeyCore.CreateFromTPMBlob(_responseBlob);
Parameters responseParams = new Parameters();
responseParams.AddValue("pubkey", pubKey);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_GetPubKey, responseParams));
}
