C# MD5加密函数代码

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Text;  
using System.Security.Cryptography;  
 
namespace NENUBookManageSystem  
{  
    class UserPasswordMD5  
    {  
        public static string Encrypt(string password)   
        {  
            MD5 md5 = new MD5CryptoServiceProvider();  
            byte[] data = System.Text.Encoding.Default.GetBytes(password);  
            byte[] md5data = md5.ComputeHash(data);  
            md5.Clear();  
            string str = “”;  
            for (int i = 0; i < md5data.Length – 1;++i )  
            {  
                str += md5data[i].ToString(“x”).PadLeft(2, ‘0’);  
            }  
            return str;  
        }  
    }  
}