private void btnDecrypt_Click(object sender, EventArgs e)
 {
     txtDecrypedData.Text = AsymmetricCryptoEngine.Decryption(txtOutputData.Text, txtPrivate.Text);
     btnDecrypt.Enabled   = false;
 }
 private void btnPrivateKeyExport_Click(object sender, EventArgs e)
 {
     Clipboard.Clear();
     Clipboard.SetText(AsymmetricCryptoEngine.ConvertXmlToBase64(txtPrivate.Text, true));
 }
 private void btnEncrypt_Click(object sender, EventArgs e)
 {
     txtOutputData.Text = AsymmetricCryptoEngine.Encryption(txtData.Text, txtPublic.Text);
     btnDecrypt.Enabled = true;
 }