C#帮助类：MD5加密

 1     /// <summary>
 2     /// MD5加密
 3     /// </summary>
 4     public class Md5
 5     {
 6         /// <summary>
 7         /// MD5加密
 8         /// </summary>
 9         /// <param name="str">加密字符</param>
10         /// <param name="code">加密位数16/32</param>
11         /// <returns></returns>
12         public static string md5(string str, int code)
13         {
14             string strEncrypt = string.Empty;
15             if (code == 16)
16             {
17                 strEncrypt = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5").Substring(8, 16);
18             }
19 
20             if (code == 32)
21             {
22                 strEncrypt = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5");
23             }
24 
25             return strEncrypt;
26         }
27     }