C#中 MD5加密的实现

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;namespace _01_MD5加密
{class Program{static void Main(string[] args){//202cb962ac59075b964b07152d234b70  123的md5值string s = "123";s = GetMD5(s);Console.WriteLine(s);Console.ReadKey();}public static string GetMD5(string str){//创建 MD5对象MD5 md5 = MD5.Create();//new MD5();//开始加密//需要将字符串转换成字节数组byte[] buffer = Encoding.GetEncoding("GBK").GetBytes(str);//md5.ComputeHash(buffer);//返回一个加密好的字节数组byte[] MD5Buffer = md5.ComputeHash(buffer);//将字节数组 转换成字符串/*字节数组  --->字符串* 1、将字节数组中的每个元素按照指定的编码格式解析成字符串* 2、直接ToString()* 3、将字节数组中的每个元素都ToString()*///return Encoding.GetEncoding("GBK").GetString(MD5Buffer);string strNew = "";for (int i = 0; i < MD5Buffer.Length; i++){strNew += MD5Buffer[i].ToString("x2");}return strNew;}}
}