public void Rijndael_EncryptionDecryptionTest(string plainText)
        {
            //Arrange
            ICryptoEngine cryptoEngine = new RijndaelCryptoEngine();

            //Act
            var cipherText = cryptoEngine.Encrypt(plainText, encryptionKey);
            var decipher   = cryptoEngine.Decrypt(cipherText, encryptionKey);

            //Assert
            Assert.AreEqual(plainText, decipher, "Encryption / Decryption failed");
        }
        public void Aes_Rijndael_EncryptionDecryptionTest(string plaintText)
        {
            //Arrange
            ICryptoEngine cryptoEngine1 = new AesCryptoEngine();
            ICryptoEngine cryptoEngine2 = new RijndaelCryptoEngine();

            //Act
            var cipherText   = cryptoEngine1.Encrypt(plaintText, encryptionKey);
            var decipherText = cryptoEngine2.Decrypt(cipherText, encryptionKey);

            //Assert
            Assert.AreEqual(plaintText, decipherText, "Both algorithms work differe");
        }