private void SaveKeySignButton_Click(object sender, EventArgs e)
{
// Save Key
try
{
// Fetch ingredients for private key
BigInteger p = BigInteger.Parse(pSignTextBox.Text);
BigInteger g = BigInteger.Parse(gSignTextBox.Text);
BigInteger x = BigInteger.Parse(xSignTextBox.Text);
// Generate key
Key k = new Key(p, g, x);
Key.PrivateKey pri = k.GeneratePrivateKey();
Key.PublicKey pub = k.GeneratePublicKey();
SaveFileDialog fileBrowser = new SaveFileDialog();
DialogResult result = fileBrowser.ShowDialog();
if (result == DialogResult.OK)
{
string fileName = fileBrowser.FileName;
k.saveToFile(fileName);
}
}
catch (Exception ex)
{
//ShowMessageBox("Key generation failed.");
}
}
private void VerifyEmail(Key.PublicKey pubKey)
{
Outlook.Application application = Globals.ThisAddIn.Application;
Outlook.Inspector inspector = application.ActiveInspector();
Outlook.MailItem item = (Outlook.MailItem)inspector.CurrentItem;
//Outlook.MailItem item = Outlook. Inspector.CurrentItem as Outlook.MailItem;
if (item != null)
{
// Put Algorithm Verify Here
string rs = item.Body.Substring(item.Body.IndexOf("<sign>"));
rs = rs.Substring(6);
rs = rs.Substring(0, rs.IndexOf("<sign>"));
/*System.Windows.Forms.MessageBox.Show(rs);
* System.Windows.Forms.MessageBox.Show(rs.Substring(0, rs.IndexOf('-')));
* System.Windows.Forms.MessageBox.Show(item.Body.Substring(0, item.Body.IndexOf("\n<sign>") - 1));
*/
BigInteger r = BigInteger.Parse("0" + rs.Substring(0, rs.IndexOf('-')), System.Globalization.NumberStyles.HexNumber);
BigInteger s = BigInteger.Parse("0" + rs.Substring(rs.IndexOf('-') + 1), System.Globalization.NumberStyles.HexNumber);
SHA256 sha = new SHA256();
if (SiGamalGenerator.verification(r, s, pubKey.G, sha.GetMessageDigestToBigInteger(item.Body.Substring(0, item.Body.IndexOf("\n<sign>") - 2)), pubKey.Y, pubKey.P))
{
System.Windows.Forms.MessageBox.Show("TRUE : Message is Valid");
}
else
{
System.Windows.Forms.MessageBox.Show("FALSE ; Message was edited");
}
}
}
private void VerifyButton_Click(object sender, EventArgs e)
{
isSign = false;
pubKey = new Key.PublicKey();
pubKey.P = BigInteger.Parse(pVerifyTextBox.Text);
pubKey.G = BigInteger.Parse(gVerifyTextBox.Text);
pubKey.Y = BigInteger.Parse(yVerifyTextBox.Text);
Close();
}
private void LoadKeyVerifyButton_Click(object sender, EventArgs e)
{
// Load Key for Verify
string fileKey = ShowOpenDialog("Public Key (*.pub)|*.pub");
if (fileKey == null)
{
return;
}
Key.PublicKey pubkey = Key.GeneratePublicKeyFromFile(fileKey);
gVerifyTextBox.Text = pubkey.G.ToString();
pVerifyTextBox.Text = pubkey.P.ToString();
yVerifyTextBox.Text = pubkey.Y.ToString();
}
