protected string Enctry(string pass, string str)
{
if (string.IsNullOrEmpty(str))
{
Random random = new Random();
str = ((char)random.Next(65, 91)).ToString() + ((char)random.Next(65, 91)).ToString(); //随机产生两个字母
}
return(str + WebComm.CreateMd5((str + WebComm.CreateMd5(pass))));
}