program.cs

des_test ＤＥＳ加密算法。源码

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Security.Cryptography;

namespace Test_DES
{
    class Programn
    {
        static void Main(string[] args)
        {
            Encrypt();
            Decrypt();
            Console.ReadLine();
        }

        public static void Encrypt()
        {
            FileStream fs = new FileStream("Demo.txt", FileMode.Create, FileAccess.Write);
            Console.WriteLine("input :");
            string Input = Console.ReadLine();
            byte[] Your = System.Text.Encoding.UTF8.GetBytes(Input);
            DESCryptoServiceProvider my = new DESCryptoServiceProvider();
            ICryptoTransform myTran = my.CreateEncryptor(new byte[] { 100, 110, 120, 130, 100, 110, 120, 130 }, new byte[] { 100, 110, 120, 130, 100, 110, 120, 130 });
            CryptoStream myCryString = new CryptoStream(fs, myTran, CryptoStreamMode.Write);
            myCryString.Write(Your, 0, Your.Length);
            myCryString.Close();
        }
        public static void Decrypt()
        {
            FileStream fs = new FileStream("Demo.txt", FileMode.Open, FileAccess.Read);
            DESCryptoServiceProvider my = new DESCryptoServiceProvider();
            ICryptoTransform myTran = my.CreateEncryptor(new byte[] { 100, 110, 120, 130, 100, 110, 120, 130 }, new byte[] { 100, 110, 120, 130, 100, 110, 120, 130 });
            CryptoStream myCryString = new CryptoStream(fs, myTran, CryptoStreamMode.Read);
            byte[] YourInput = new byte[1000];
            int len = myCryString.Read(YourInput, 0, YourInput.Length);
            Console.WriteLine("output :");
            Console.WriteLine(System.Text.Encoding.UTF8.GetString(YourInput, 0, len));
        }


    }
}