using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Security.Cryptography;
private static byte[] DESKey=new byte[]{11,23,93,102,72,41,18,12};
private static byte[] DESIV=new byte[]{75,158,46,97,78,57,17,36};
public static string Encode(string Encode_String)
{
DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
MemoryStream objMemoryStream = new MemoryStream();
//用指定的 Key 和初始化向量 (IV) 创建对称数据加密标准 (DES) 加密器对象
CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateEncryptor(DESKey,DESIV),CryptoStreamMode.Write);
StreamWriter objStreamWriter = new StreamWriter(objCryptoStream);
objStreamWriter.Write(Encode_String);
objStreamWriter.Flush();
objCryptoStream.FlushFinalBlock();
objMemoryStream.Flush();
return Convert.ToBase64String(objMemoryStream.GetBuffer(), 0, (int)objMemoryStream.Length);
}
public static string Decode(string Encode_String)
{
DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
byte[] Input = Convert.FromBase64String(Encode_String);
MemoryStream objMemoryStream = new MemoryStream(Input);
//用指定的 Key 和初始化向量 (IV) 创建对称数据加密标准 (DES) 解密器对象
CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateDecryptor(DESKey,DESIV),CryptoStreamMode.Read);
StreamReader objStreamReader = new StreamReader(objCryptoStream);
return objStreamReader.ReadToEnd();
}
private void button1_Click(object sender, System.EventArgs e)
{
try
{
string temp=textBox1.Text;
textBox2.Text=Encode(temp);
}
catch(System.Exception ee)
{
MessageBox.Show("解密、加密期间出现错误！"+ee.Message,"错误");
}
}
private void button2_Click(object sender, System.EventArgs e)
{
textBox3.Text= Decode(textBox2.Text);
}
