public static string Encrypt(string plainText, string pass)
        {
            string initVector = INIT_VECTOR_ENCRYPT_DECRYPT;

            // Before encrypting data, we will append plain text to a random
            // salt value, which will be between 4 and 8 bytes long (implicitly
            // used defaults).
            RijndaelEnhanced rijndaelKey =
                new RijndaelEnhanced(pass, initVector);

            //Console.WriteLine(String.Format("Plaintext   : {0}\n", plainText));

            // Encrypt the same plain text data 10 time (using the same key,
            // initialization vector, etc) and see the resulting cipher text;
            // encrypted values will be different.
            return rijndaelKey.Encrypt(plainText);
        }