public ActionResult Encrypt(string plainText)
{
ViewBag.PlainText = plainText;
byte[] encryptedBytes = AESCrypto.AES_EncryptString(plainText);
string encryptedHexString = CryptoHelper.ConvertByteArrayToHexString(encryptedBytes);
ViewBag.EncryptedHexString = encryptedHexString + "&HMacToken=" + GenerateHMac(encryptedHexString);
return(View("Index"));
}