protected void btnDesEncriptar_click(object sender, EventArgs e)
{
var twofish = new TwoFish();
var key = "7f9facc418f74439c5e9709832;0ab8a5:OCOdNSW1,q8SLIQz8i|8agmu¬s13Q7ZXyno/";
TxtAreaEncriptado.Value = twofish.TwoFishDecryption(TxtMessage.Text, key);
}