using System;

using System.IO;

using System.Security.Cryptography;

​

namespace INET.Crypto

{

    public class INETDesCrypto

    {

        private static byte[] KEY_64 = new byte[]

        {

            1,

            2,

            3,

            4,

            5,

            6,

            7,

            8

        };

​

        private static byte[] IV_64 = new byte[]

        {

            8,

            7,

            6,

            5,

            4,

            3,

            2,

            1

        };

​

        public static string EncryptMessage(string value)

        {

            DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();

            MemoryStream memoryStream = new MemoryStream();

            CryptoStream cryptoStream = new CryptoStream(memoryStream, dESCryptoServiceProvider.CreateEncryptor(INETDesCrypto.KEY_64, INETDesCrypto.IV_64), CryptoStreamMode.Write);

            StreamWriter streamWriter = new StreamWriter(cryptoStream);

            streamWriter.Write(value);

            streamWriter.Flush();

            cryptoStream.FlushFinalBlock();

            memoryStream.Flush();

            return Convert.ToBase64String(memoryStream.GetBuffer(), 0, Convert.ToInt32(memoryStream.Length));

        }

​

        public static string DecryptMessage(string value)

        {

            string result = "";

            try

            {

                DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();

                byte[] buffer = Convert.FromBase64String(value);

                MemoryStream stream = new MemoryStream(buffer);

                CryptoStream stream2 = new CryptoStream(stream, dESCryptoServiceProvider.CreateDecryptor(INETDesCrypto.KEY_64, INETDesCrypto.IV_64), CryptoStreamMode.Read);

                StreamReader streamReader = new StreamReader(stream2);

                result = streamReader.ReadToEnd();

            }

            catch (Exception ex)

            {

                throw ex;

            }

            return result;

        }

        public static void Main()

    {

        Console.WriteLine(EncryptMessage("1"));

    }

    }

}

​