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));
}
public override TPMCommandResponse Process()
{
if (_params.IsDefined <ITPMHandle>("handle") == false ||
_params.IsDefined <byte[]>("context_blob") == false)
{
return(new TPMCommandResponse(false, TPMCommandNames.TPM_CMD_LoadContext, new Parameters()));
}
ITPMHandle handle = _params.GetValueOf <ITPMHandle>("handle");
TPMBlob blob = new TPMBlob();
blob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_COMMAND, TPMOrdinals.TPM_ORD_LoadContext);
blob.WriteUInt32(handle.Handle);
blob.WriteBool(handle.ForceHandle);
blob.WriteUInt32((uint)handle.ContextBlob.Length);
blob.Write(handle.ContextBlob, 0, handle.ContextBlob.Length);
TPMBlob responseBlob = TransmitMe(blob);
responseBlob.SkipHeader();
handle.Handle = responseBlob.ReadUInt32();
Parameters responseParameters = new Parameters();
responseParameters.AddValue("handle", handle);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_LoadContext, responseParameters));
}
protected override TPMCommandResponse InternalProcess()
{
// Unencrypted authorization values, they need to be XOR-Encrypted with
// XOR(auth, SHA-1(OSAP shared secret | session nonce))
//
// OSAP_shared_secret = HMAC(key=usage secret of key handle, nonce even osap | nonce odd osap)
AuthHandle auth1OSAP = _commandAuthHelper.AssureOSAPSharedSecret(this, AuthSessionNum.Auth1);
_encAuth = _params.GetValueOf <byte[]> ("data_auth");
byte[] xorKey = new HashProvider().Hash(
new HashByteDataProvider(auth1OSAP.SharedSecret),
new HashByteDataProvider(auth1OSAP.NonceEven));
ByteHelper.XORBytes(_encAuth, xorKey);
//Load parent key if not loaded
_keyManager.LoadKey(_params.GetValueOf <string>("key"));
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_Seal);
//key handle gets inserted later, it may be not available now
requestBlob.WriteUInt32(0);
requestBlob.Write(_encAuth, 0, 20);
TPMBlobWriteableHelper.WriteITPMBlobWritableWithUIntSize(requestBlob, _pcrInfo);
requestBlob.WriteUInt32((uint)_inData.Length);
requestBlob.Write(_inData, 0, _inData.Length);
AuthorizeMe(requestBlob);
using (_keyManager.AcquireLock())
{
requestBlob.SkipHeader();
requestBlob.WriteUInt32(_keyManager.IdentifierToHandle(_params.GetValueOf <string>("key")).Handle);
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
TPMStoredDataCore sealedData = TPMStoredDataCore.CreateFromTPMBlob(_responseBlob);
Parameters responseParams = new Parameters();
responseParams.AddPrimitiveType("data", ByteHelper.SerializeToBytes(sealedData));
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_Seal, responseParams));
}
protected override TPMCommandResponse InternalProcess()
{
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_LoadKey2);
//If not loaded load now
if (_params.GetValueOf <bool>("parent_key_srk") == false)
{
_keyManager.LoadKey(_params.GetValueOf <string>("parent_identifier"));
}
//To be inserted later
requestBlob.WriteUInt32(0);
_tpmKey.WriteToTpmBlob(requestBlob);
//Blocking authorize, blocks till the user has entered the authorization data
AuthorizeMe(requestBlob);
using (_keyManager.AcquireLock())
{
_keyManager.EnsureFreeSlot();
uint tpmKeyHandle;
if (_params.GetValueOf <bool>("parent_key_srk"))
{
tpmKeyHandle = (uint)TPMKeyHandles.TPM_KH_SRK;
}
else
{
tpmKeyHandle = _keyManager.IdentifierToHandle(_params.GetValueOf <string>("parent_identifier")).Handle;
}
//Write key handle to the first position after the header
requestBlob.SkipHeader();
requestBlob.WriteUInt32(tpmKeyHandle);
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
uint loadedTpmHandle = _responseBlob.ReadUInt32();
KeyHandle loadedHandle = new KeyHandle(_params.GetValueOf <string>("key_identifier"), loadedTpmHandle);
_responseParameters = new Parameters();
_responseParameters.AddPrimitiveType("handle", loadedHandle);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_LoadKey2, _responseParameters));
}
public override TPMCommandResponse Process()
{
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_COMMAND, TPMOrdinals.TPM_ORD_OIAP);
requestBlob.WriteCmdSize();
_commandAuthHelper.EnsureFreeSlot();
TPMBlob responseBlob = TransmitMe(requestBlob);
responseBlob.SkipHeader();
AuthHandleCore authHandle = new AuthHandleCore(AuthHandle.AuthType.OIAP, responseBlob);
_responseParameters = new Parameters();
_responseParameters.AddValue("auth_handle", authHandle);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_OIAP, _responseParameters));
}
protected override TPMCommandResponse InternalProcess()
{
//Load parent key if not loaded
_keyManager.LoadKey(_params.GetValueOf <string>("key"));
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_UnBind);
//key handle gets inserted later, it may be not available now
requestBlob.WriteUInt32(0);
requestBlob.WriteUInt32((uint)_inData.Length);
requestBlob.Write(_inData, 0, _inData.Length);
AuthorizeMe(requestBlob);
using (_keyManager.AcquireLock())
{
requestBlob.SkipHeader();
requestBlob.WriteUInt32(_keyManager.IdentifierToHandle(_params.GetValueOf <string>("key")).Handle);
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
uint dataSize = _responseBlob.ReadUInt32();
byte[] responseData = new byte[dataSize];
_responseBlob.Read(responseData, 0, responseData.Length);
Parameters responseParams = new Parameters();
responseParams.AddPrimitiveType("data", responseData);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_Unbind, responseParams));
}
public override TPMCommandResponse Process()
{
//We don't have any meaningful labeldata we could include,
//so generate some random
byte[] labelData = new byte[16];
Random r = new Random();
r.NextBytes(labelData);
if (_params.IsDefined <ITPMHandle>("handle") == false)
{
return(new TPMCommandResponse(false, TPMCommandNames.TPM_CMD_SaveContext, new Parameters()));
}
ITPMHandle handle = _params.GetValueOf <ITPMHandle>("handle");
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_COMMAND, TPMOrdinals.TPM_ORD_SaveContext);
requestBlob.WriteUInt32(handle.Handle);
requestBlob.WriteUInt32((uint)handle.ResourceType);
requestBlob.Write(labelData, 0, labelData.Length);
TPMBlob responseBlob = TransmitMe(requestBlob);
responseBlob.SkipHeader();
uint blobSize = responseBlob.ReadUInt32();
byte[] contextBlob = responseBlob.ReadBytes((int)blobSize);
Parameters responseParams = new Parameters();
responseParams.AddPrimitiveType("context_blob", contextBlob);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_SaveContext, 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));
}
protected override TPMCommandResponse InternalProcess()
{
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_Quote);
//key handle gets inserted later, it may be not available now
requestBlob.WriteUInt32(0);
requestBlob.Write(_nonce, 0, 20);
_pcrSelection.WriteToTpmBlob(requestBlob);
_keyManager.LoadKey(_params.GetValueOf <string>("key"));
AuthorizeMe(requestBlob);
using (_keyManager.AcquireLock())
{
requestBlob.SkipHeader();
requestBlob.WriteUInt32(_keyManager.IdentifierToHandle(_params.GetValueOf <string>("key")).Handle);
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
TPMPCRCompositeCore pcrComposite = TPMPCRCompositeCore.CreateFromTPMBlob(_responseBlob);
uint sigSize = _responseBlob.ReadUInt32();
byte[] signature = _responseBlob.ReadBytes((int)sigSize);
// Do signature verification
TPMQuoteInfoCore quoteInfo = TPMQuoteInfoCore.Create(new HashProvider().Hash(new HashTPMBlobWritableDataProvider(pcrComposite)), _nonce);
byte[] signingData;
using (TPMBlob blob = new TPMBlob())
{
quoteInfo.WriteToTpmBlob(blob);
signingData = blob.ToArray();
}
Parameters pubKeyParams = new Parameters();
pubKeyParams.AddPrimitiveType("key", _params.GetValueOf <string>("key"));
TPMCommandRequest pubKeyRequest = new TPMCommandRequest(TPMCommandNames.TPM_CMD_GetPubKey, pubKeyParams);
TPMCommandResponse pubKeyResponse = _tpmWrapper.Process(pubKeyRequest,
_commandAuthHelper, _keyManager);
if (pubKeyResponse.Status == false)
{
_log.FatalFormat("TPM_Quote: Could not retrieve pubkey of key");
return(new TPMCommandResponse(false, TPMCommandNames.TPM_CMD_Quote, new Parameters()));
}
TPMKey keyInfo = TPMKeyCore.CreateFromBytes(_keyManager.GetKeyBlob(_params.GetValueOf <string>("key")));
TPMPubkey pubkey = pubKeyResponse.Parameters.GetValueOf <TPMPubkey>("pubkey");
if (SignatureVerification.VerifySignature(keyInfo, pubkey, signingData, signature) == false)
{
throw new ArgumentException("The TPM_Quote signature could not be verified");
}
Parameters responseParams = new Parameters();
responseParams.AddValue("pcrData", pcrComposite);
responseParams.AddPrimitiveType("sig", signature);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_Quote, responseParams));
}
protected override TPMCommandResponse InternalProcess()
{
string key = _params.GetValueOf <string>("key");
_keyManager.LoadKey(key);
TPMKey keyInfo = TPMKeyCore.CreateFromBytes(_keyManager.GetKeyBlob(key));
if (keyInfo == null)
{
throw new ArgumentException(string.Format("TPM_Sign could not retrieve keyinfo for key '{0}'", key));
}
byte[] areaToSign = null;
if (keyInfo.AlgorithmParams.SigScheme == TPMSigScheme.TPM_SS_RSASSAPKCS1v15_SHA1)
{
//Client has hopefully put data in the right format ready for the tpm to process
if (_params.IsDefined <byte[]>("areaToSign"))
{
areaToSign = _params.GetValueOf <byte[]>("areaToSign");
}
//Client just sends data, tpm lib cares about the right, signature dependent, processing
else if (_params.IsDefined <byte[]>("data"))
{
byte[] data = _params.GetValueOf <byte[]>("data");
areaToSign = new HashProvider().Hash(new HashByteDataProvider(data));
}
if (areaToSign.Length != 20)
{
throw new ArgumentException(string.Format("Sig scheme '{0}' expects an area to sign with length 20!", keyInfo.AlgorithmParams.SigScheme));
}
}
else
{
throw new ArgumentException(string.Format("TPM_Sign has not implemented signature scheme '{0}' for algorithm '{1}'", keyInfo.AlgorithmParams.SigScheme, keyInfo.AlgorithmParams.AlgorithmId));
}
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_Sign);
//key handle gets inserted later, it may be not available now
requestBlob.WriteUInt32(0);
requestBlob.WriteUInt32((uint)areaToSign.Length);
requestBlob.Write(areaToSign, 0, areaToSign.Length);
AuthorizeMe(requestBlob);
using (_keyManager.AcquireLock())
{
requestBlob.SkipHeader();
requestBlob.WriteUInt32(_keyManager.IdentifierToHandle(key).Handle);
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
uint sigSize = _responseBlob.ReadUInt32();
byte[] signature = _responseBlob.ReadBytes((int)sigSize);
Parameters responseParams = new Parameters();
responseParams.AddPrimitiveType("sig", signature);
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_Sign, responseParams));
}
public override TPMCommandResponse Process()
{
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_COMMAND, TPMOrdinals.TPM_ORD_GetCapability);
requestBlob.WriteUInt32((uint)_capArea);
switch (_capArea)
{
case CapabilityData.TPMCapabilityArea.TPM_CAP_VERSION_VAL:
//Subcaps are ignored by TPM_CAP_VERSION_VAL
requestBlob.WriteUInt32(0);
break;
case CapabilityData.TPMCapabilityArea.TPM_CAP_HANDLE:
requestBlob.WriteUInt32(4);
requestBlob.WriteUInt32((uint)_param.GetValueOf <TPMResourceType> ("handle_type"));
break;
case CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY:
CapabilityData.TPMSubCapProperty subCap = _param.GetValueOf <CapabilityData.TPMSubCapProperty> ("subCap");
//Size of subcap
requestBlob.WriteUInt32(4);
requestBlob.WriteUInt32((uint)subCap);
break;
case CapabilityData.TPMCapabilityArea.TPM_CAP_SELECT_SIZE:
CapabilityDataCore.TPMSelectSizeCore tpmSelectSize =
CapabilityDataCore.TPMSelectSizeCore.CreateVersion12(_param.GetValueOf <ushort>(CapabilityData.PARAM_PROP_SELECT_SIZE));
TPMBlobWriteableHelper.WriteITPMBlobWritableWithUIntSize(requestBlob, tpmSelectSize);
break;
default:
throw new NotSupportedException("Defined cap or subcap are not supported");
}
// if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_VERSION_VAL)
// {
// //Subcaps are ignored by TPM_CAP_VERSION_VAL
// requestBlob.WriteUInt32 (0);
// }
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_HANDLE)
// {
// requestBlob.WriteUInt32 (4);
// requestBlob.WriteUInt32 ((uint)_param.GetValueOf<TPMResourceType> ("handle_type"));
// }
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY)
// {
// CapabilityData.TPMSubCapProperty subCap = _param.GetValueOf<CapabilityData.TPMSubCapProperty> ("subCap");
//
// //Size of subcap
// requestBlob.WriteUInt32 (4);
// requestBlob.WriteUInt32 ((uint)subCap);
// }
// else
// throw new NotSupportedException ("Defined cap or subcap are not supported");
requestBlob.WriteCmdSize();
TPMBlob responseBlob = TransmitMe(requestBlob);
responseBlob.SkipHeader();
Parameters parameters = new Parameters();
switch (_capArea)
{
case CapabilityData.TPMCapabilityArea.TPM_CAP_VERSION_VAL:
CapabilityDataCore.TPMCapVersionInfoCore tpmVersionInfo = new CapabilityDataCore.TPMCapVersionInfoCore(responseBlob);
parameters.AddValue(CapabilityData.PARAM_TPM_VERSION_INFO, tpmVersionInfo);
break;
case CapabilityData.TPMCapabilityArea.TPM_CAP_HANDLE:
responseBlob.SkipHeader();
//Reads the response size, which is ignored
responseBlob.ReadUInt32();
HandleListCore handleList = new HandleListCore(responseBlob, _param.GetValueOf <TPMResourceType> ("handle_type"));
parameters.AddValue("handles", handleList);
break;
case CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY:
responseBlob.SkipHeader();
switch (_param.GetValueOf <CapabilityData.TPMSubCapProperty> ("subCap"))
{
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_PCR:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_PCR, ReadUInt32Response(responseBlob));
break;
//case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_DIR:
// parameters.AddPrimitiveType (CapabilityData.PARAM_PROP_DIR, ReadUInt32Response (responseBlob));
// break;
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MANUFACTURER:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_MANUFACTURER, ReadUInt32Response(responseBlob));
break;
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_KEYS:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_KEYS, ReadUInt32Response(responseBlob));
break;
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_AUTHSESS:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_MAX_AUTHSESS, ReadUInt32Response(responseBlob));
break;
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_TRANSESS:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_MAX_TRANSESS, ReadUInt32Response(responseBlob));
break;
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_KEYS:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_MAX_KEYS, ReadUInt32Response(responseBlob));
break;
case CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_SESSIONS:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_MAX_SESSIONS, ReadUInt32Response(responseBlob));
break;
default:
throw new NotSupportedException("Defined cap or subcap are not supported");
}
break;
case CapabilityData.TPMCapabilityArea.TPM_CAP_SELECT_SIZE:
parameters.AddPrimitiveType(CapabilityData.PARAM_PROP_SELECT_SIZE, ReadBoolResponse(responseBlob));
break;
}
// if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_VERSION_VAL)
// {
// CapabilityDataCore.TPMCapVersionInfoCore tpmVersionInfo = new CapabilityDataCore.TPMCapVersionInfoCore (responseBlob);
// parameters.AddValue (CapabilityData.PARAM_TPM_VERSION_INFO, tpmVersionInfo);
// }
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_HANDLE)
// {
// responseBlob.SkipHeader ();
//
// //Reads the response size, which is ignored
// responseBlob.ReadUInt32 ();
//
// HandleListCore handleList = new HandleListCore (responseBlob, _param.GetValueOf<TPMResourceType> ("handle_type"));
// parameters.AddValue ("handles", handleList);
// }
//
//
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY &&
// _param.GetValueOf<CapabilityData.TPMSubCapProperty> ("subCap") == CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_PCR)
// {
// responseBlob.SkipHeader ();
// parameters.AddPrimitiveType (CapabilityData.PARAM_PROP_PCR, ReadUInt32Response (responseBlob));
// }
//
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY &&
// _param.GetValueOf<CapabilityData.TPMSubCapProperty> ("subCap") == CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_AUTHSESS)
// {
// responseBlob.SkipHeader ();
// parameters.AddPrimitiveType (CapabilityData.PARAM_PROP_MAX_AUTHSESS, ReadUInt32Response (responseBlob));
// }
//
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY &&
// _param.GetValueOf<CapabilityData.TPMSubCapProperty> ("subCap") == CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_TRANSESS)
// {
// responseBlob.SkipHeader ();
// parameters.AddPrimitiveType (CapabilityData.PARAM_PROP_MAX_TRANSESS, ReadUInt32Response (responseBlob));
// }
//
// else if (_capArea == CapabilityData.TPMCapabilityArea.TPM_CAP_PROPERTY &&
// _param.GetValueOf<CapabilityData.TPMSubCapProperty> ("subCap") == CapabilityData.TPMSubCapProperty.TPM_CAP_PROP_MAX_SESSIONS)
// {
// responseBlob.SkipHeader ();
// parameters.AddPrimitiveType (CapabilityData.PARAM_PROP_MAX_SESSIONS, ReadUInt32Response (responseBlob));
// }
// else
// throw new NotSupportedException("Defined cap or subcap are not supported");
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_GetCapability, parameters));
}
protected override TPMCommandResponse InternalProcess()
{
// Unencrypted authorization values, they need to be XOR-Encrypted with
// XOR(auth, SHA-1(OSAP shared secret | session nonce))
//
// OSAP_shared_secret = HMAC(key=usage secret of key handle, nonce even osap | nonce odd osap)
AuthHandle auth1OSAP = _commandAuthHelper.AssureOSAPSharedSecret(this, AuthSessionNum.Auth1);
_usageAuth = _params.GetValueOf <byte[]> ("usage_auth");
_migrationAuth = _params.GetValueOf <byte[]> ("migration_auth");
byte[] xorKey = new HashProvider().Hash(
new HashByteDataProvider(auth1OSAP.SharedSecret),
new HashByteDataProvider(auth1OSAP.NonceEven));
ByteHelper.XORBytes(_usageAuth, xorKey);
ByteHelper.XORBytes(_migrationAuth, xorKey);
//Load parent key if not loaded
_keyManager.LoadKey(_params.GetValueOf <string>("parent"));
TPMBlob requestBlob = new TPMBlob();
requestBlob.WriteCmdHeader(TPMCmdTags.TPM_TAG_RQU_AUTH1_COMMAND, TPMOrdinals.TPM_ORD_CreateWrapKey);
//parent key handle gets inserted later, it may be not available now
requestBlob.WriteUInt32(0);
requestBlob.Write(_usageAuth, 0, 20);
requestBlob.Write(_migrationAuth, 0, 20);
_tpmKey.WriteToTpmBlob(requestBlob);
using (_keyManager.AcquireLock())
{
AuthorizeMe(requestBlob);
requestBlob.SkipHeader();
if (_params.GetValueOf <string>("parent") == KeyHandle.KEY_SRK)
{
requestBlob.WriteUInt32((uint)TPMKeyHandles.TPM_KH_SRK);
}
else
{
requestBlob.WriteUInt32(_keyManager.IdentifierToHandle(_params.GetValueOf <string>("parent")).Handle);
}
_responseBlob = TransmitMe(requestBlob);
}
CheckResponseAuthInfo();
_responseBlob.SkipHeader();
TPMKeyCore newKey = new TPMKeyCore(_responseBlob);
_responseParameters = new Parameters();
//Build and save the key identifier
//The key identifier is the hex-string representation of the hash of the newly created key
_responseParameters.AddPrimitiveType("key_identifier",
ByteHelper.ByteArrayToHexString(
new HashProvider().Hash(
new HashByteDataProvider(
ByteHelper.SerializeToBytes(newKey)
)
),
""));
_responseParameters.AddPrimitiveType("key_data", ByteHelper.SerializeToBytes(newKey));
return(new TPMCommandResponse(true, TPMCommandNames.TPM_CMD_CreateWrapKey, _responseParameters));
}