c# MD5加密算法的实例

环境：vs.net2005/sql server2000/xp测试通过
1.MD5　16位加密实例
       using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;

namespace md5
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(UserMd5("8"));
            Console.WriteLine(GetMd5Str("8"));
        }
        /**//// <summary>
        /// MD5 16位加密
        /// </summary>
        /// <param name="ConvertString"></param>
        /// <returns></returns>
        public static string GetMd5Str(string ConvertString)
        {
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(ConvertString)), 4, 8);
            t2 = t2.Replace("-", "");
            return t2;
        }
http://www.cnblogs.com/sopper/archive/2007/01/08/615111.html
        /**//// <summary>
        /// MD5　32位加密
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
       static  string UserMd5(string str)
        {
            string cl = str;
            string pwd = "";

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