private void btnGetS1Msg_Click(object sender, EventArgs e)
{
lblGetS1MsgRet.Text = string.Empty;
// Get S1 message from the trusted application
IntPtr s1Msg = Marshal.AllocHGlobal(S1_MESSAGE_LEN);
StatusCode status = (StatusCode)SigmaWrapper.GetS1Message(s1Msg);
switch (status)
{
// S1 message was received successfully
case StatusCode.STATUS_SUCCEEDED:
{
Marshal.Copy(s1Msg, S1MsgToSend, 0, S1MsgToSend.Length);
// Update GUI
lblGetS1MsgRet.Text = "S1 message created successfully.";
btnGetS1Msg.Enabled = false;
btnGetS2Msg.Enabled = true;
break;
}
case StatusCode.INITIALIZE_FAILED:
lblGetS1MsgRet.Text = "Error: JHI Initializing failed.";
labelErrS1.Text = GetErrorMsgAsString();
break;
case StatusCode.INSTALL_FAILED:
lblGetS1MsgRet.Text = "Error: Installing TA failed.";
labelErrS1.Text = GetErrorMsgAsString();
break;
case StatusCode.OPEN_SESSION_FAILED:
lblGetS1MsgRet.Text = "Error: Opening a session failed.";
labelErrS1.Text = GetErrorMsgAsString();
break;
case StatusCode.FAILED_TO_INITIALIZE_SIGMA:
lblGetS1MsgRet.Text = "Error: SIGMA Initializing failed.";
labelErrS1.Text = GetErrorMsgAsString();
break;
case StatusCode.FAILED_TO_GET_PUBLIC_KEY:
lblGetS1MsgRet.Text = "Error: Failed to get public key.\nIs your platform EPID provisioned?";
labelErrS1.Text = GetErrorMsgAsString();
break;
default:
lblGetS1MsgRet.Text = "Failed to perform send and receive operation in\norder to get S1 message.";
labelErrS1.Text = GetErrorMsgAsString();
break;
}
Marshal.FreeHGlobal(s1Msg);
}
private string GetErrorMsgAsString()
{
IntPtr errorMessageIntPtr = Marshal.AllocHGlobal(ERROR_MESSAGE_LEN);
IntPtr errorMsgLenIntPtr = Marshal.AllocHGlobal(INT_SIZE);
SigmaWrapper.GetErrorMessage(errorMessageIntPtr, errorMsgLenIntPtr);
byte[] messageLength = new byte[INT_SIZE];
Marshal.Copy(errorMsgLenIntPtr, messageLength, 0, messageLength.Length);
byte[] message = new byte[BitConverter.ToInt32(messageLength, 0)];
Marshal.Copy(errorMessageIntPtr, message, 0, message.Length);
Marshal.FreeHGlobal(errorMessageIntPtr);
Marshal.FreeHGlobal(errorMsgLenIntPtr);
return(System.Text.Encoding.ASCII.GetString(message));
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
Hide();
SigmaWrapper.Close();
Application.Exit();
}
private void btnClose_Click(object sender, EventArgs e)
{
Hide();
SigmaWrapper.Close();
Application.Exit();
}
private void btnGetS3Msg_Click(object sender, EventArgs e)
{
lblGetS3MsgRet.Text = string.Empty;
// Get S3 message length from the trusted application
IntPtr s3MsgLen = Marshal.AllocHGlobal(INT_SIZE);
StatusCode status = (StatusCode)SigmaWrapper.GetS3MessagLen(s2Message, s2MsgLen, s3MsgLen);
switch (status)
{
case StatusCode.STATUS_SUCCEEDED:
{
byte[] S3MsgLenByteArray = new byte[INT_SIZE];
Marshal.Copy(s3MsgLen, S3MsgLenByteArray, 0, S3MsgLenByteArray.Length);
// Convert S3 message length from most significant byte first presentation to most significant byte last presentation
SwapArrBitEndianness(S3MsgLenByteArray);
int s3MessageLenInt = BitConverter.ToInt32(S3MsgLenByteArray, 0);
// Get S3 message from the trusted application
IntPtr s3Msg = Marshal.AllocHGlobal(s3MessageLenInt);
status = (StatusCode)SigmaWrapper.GetS3Message(s2Message, s2MsgLen, s3MessageLenInt, s3Msg);
switch (status)
{
// S3 message was received successfully
case StatusCode.STATUS_SUCCEEDED:
{
// Send S3 message length to server
socket.Send(BitConverter.GetBytes(s3MessageLenInt));
// Send S3 message to server for processing and verification
byte[] S3MsgToSend = new byte[s3MessageLenInt];
Marshal.Copy(s3Msg, S3MsgToSend, 0, S3MsgToSend.Length);
socket.Send(S3MsgToSend);
lblGetS3MsgRet.Text = "S3 message was created successfully.";
// Get S3 processing status from server
status = (StatusCode)ReceiveIntFromServer();
//if (status == StatusCode.STATUS_SUCCEEDED)
//lblEnd.Text = "Now both parties have one shared secret and\ncan use any symmetrical encryption algorithm.";
//else
//lblEnd.Text = "Server failed to verify S3 message.";
break;
}
case StatusCode.INCORRECT_S2_BUFFER:
lblGetS3MsgRet.Text = "Trusted application received an incorrect S2 message.";
break;
case StatusCode.FAILED_TO_PROCESS_S2:
lblGetS3MsgRet.Text = "Failed to process S2.";
break;
case StatusCode.WRONG_INTEL_SIGNED_CERT_TYPE:
lblGetS3MsgRet.Text = "Verifier's certificate is wrong Intel signed.";
break;
case StatusCode.FAILED_TO_GET_SESSION_PARAMS:
lblGetS3MsgRet.Text = "Failed to get session parameters.";
break;
case StatusCode.FAILED_TO_DISPOSE_SIGMA:
lblGetS3MsgRet.Text = "Failed to dispose SIGMA.";
break;
default:
lblGetS3MsgRet.Text = "Failed to perform send and receive operation in\norder to get S3 message.";
break;
}
Marshal.FreeHGlobal(s3Msg);
btnGetS3Msg.Enabled = false;
break;
}
case StatusCode.FAILED_TO_GET_S3_LEN:
lblGetS3MsgRet.Text = "Error: Failed to get S3 message length.";
break;
default:
lblGetS3MsgRet.Text = "Failed to perform send and receive operation in\norder to get S3 message length.";
break;
}
Marshal.FreeHGlobal(s3MsgLen);
}
