.net中MD5使用方法

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Security.Cryptography; 
using System.IO; 
namespace MD5练习 
{ 
   public static class MD5String 
    { 
       /// <summary> 
       /// 字符串转换 
       /// </summary> 
       /// <param name="str">要转换的字符串</param> 
       /// <returns></returns> 
       public static string GetMD5String(string str) 
       { 
           MD5 md5 = MD5.Create(); 
           byte[] b = Encoding.UTF8.GetBytes(str); 
           byte[] md5b = md5.ComputeHash(b); 
           md5.Clear(); 
           StringBuilder sb = new StringBuilder(); 
           foreach (var item in md5b) 
           { 
               sb.Append(item.ToString("x2")); 
           } 
           return sb.ToString(); 
       } 
       /// <summary> 
       /// 文件转成MD5 
       /// </summary> 
       /// <param name="path">完整路径</param> 
       /// <returns></returns> 
       public static string GetMD5FileString(string path) 
       { 
           StringBuilder sb = new StringBuilder(); 
           using (FileStream fs = File.OpenRead(path)) 
           { 
               MD5 md5 = MD5.Create(); 
               byte[] b = md5.ComputeHash(fs); 
               md5.Clear(); 
                
               foreach (var item in b) 
               { 
                   sb.Append(item.ToString("x2")); 
               } 
                
           } 
           return sb.ToString(); 
       } 
 
 
    } 
} 


作者 xhccom的专栏

补充：综合编程 , 安全编程 ,