常用的加密法 md5

using System.Web.Security;

public static string Encrypt(string Password,int Format)
  {
   string str = "";
   switch(Format)
   {
    case 0:
     str = FormsAuthentication.HashPasswordForStoringInConfigFile(Password,"SHA1");
     break;
    case 1:
     str = FormsAuthentication.HashPasswordForStoringInConfigFile(Password,"MD5"); //MD5加密
     break;
   }
   return str;
  }