using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    public static void Main()

    {

        var token = "vodafone";

        Console.WriteLine(Encrypt(token));

    }

    public static string Encrypt(string text)

        {

            using (Aes cipher = CreateCipher())

            {

                ICryptoTransform cryptTransform = cipher.CreateEncryptor();

                byte[] plaintext = Encoding.UTF8.GetBytes(text);

                byte[] cipherText = cryptTransform.TransformFinalBlock(plaintext, 0, plaintext.Length);

​

                return Convert.ToBase64String(cipherText);

            }

        }

     private static Aes CreateCipher()

        {

            // Default values: Keysize 256 (bit), Padding PKC27

            Aes cipher = Aes.Create();

            cipher.Mode = CipherMode.CBC;

            cipher.Padding = PaddingMode.ISO10126;

            cipher.Key = Encoding.UTF8.GetBytes("4OArLrKY7WCZKWrDnWZkR8eYeSzFJrkJ");;

            cipher.IV = Encoding.UTF8.GetBytes("KsQFeW5cxn080808");;

            return cipher;

        }

}