C# MD5加密类

 

 1using System;
 2using System.Collections.Generic;
 3using System.Text;
 4using System.Security.Cryptography; 
 5
 6namespace Archives
 7{
 8        public static class Encryption
 9        {
                /**//// <summary>
                /// MD5加密
                /// </summary>
                /// <param name="str"></param>
                /// <returns></returns>
                public static string MD5(String str)
                {
                        MD5 md5 = new MD5CryptoServiceProvider();
                        byte[] data = System.Text.Encoding.Default.GetBytes(str);
                        byte[] result = md5.ComputeHash(data);
                        String ret = "";
                        for (int i = 0; i < result.Length; i++)
                                ret += result[i].ToString("x").PadLeft(2, '0');
                        return ret;
                } 
        }
}