using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Security.Cryptography;
using System.IO;
namespace SoftEncrypt
...{
public partial class Form1 : Form
...{
const string KEY_64 = "12345678";
const string IV_64 = "98765432"; //注意了，是8个字符，64位
public Form1()
...{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
...{
textBox2.Text = Encode(textBox1.Text.Trim());
}
public static string Encode(string data)
...{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
int i = cryptoProvider.KeySize;
MemoryStream ms = new MemoryStream();
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
StreamWriter sw = new StreamWriter(cst);
sw.Write(data);
sw.Flush();
cst.FlushFinalBlock();
sw.Flush();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
}
public static string Decode(string data)
...{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
byte[] byEnc;
try
...{
byEnc = Convert.FromBase64String(data);
}
catch
...{
return null;
}
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
}
private void button2_Click(object sender, EventArgs e)
...{
textBox1.Text = Decode(textBox2.Text.Trim());
}
}
}
本文转载:
CSDN博客