using System;

using System.IO;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World~~");

 Console.WriteLine(GetKCVDES());

            Console.ReadLine();     

    }

​

        public static string GetKCVDES()

        {

            byte[] key = new byte[] { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF };

            byte[] iv = new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

            byte[] data = new byte[] { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

​

            DES des = new DESCryptoServiceProvider();

​

            using (MemoryStream memoryStream = new MemoryStream())

            {

                using (CryptoStream cryptoStream = new CryptoStream(memoryStream, des.CreateEncryptor(key, iv), CryptoStreamMode.Write))

                {

                    cryptoStream.Write(data, 0, data.Length);

                    cryptoStream.FlushFinalBlock();

                    return ByteArrayToString(memoryStream.ToArray()).Remove(6);

                }

            }

        }

​

        public static string ByteArrayToString(byte[] ba)

        {

            StringBuilder hex = new StringBuilder(ba.Length * 2);

            foreach (byte b in ba)

                hex.AppendFormat("{0:x2}", b);

            return hex.ToString().ToUpper();

        }   

}