c# MD5加密

c#实现md5加密，最后转换成小写的32位的小写密码

引用：using System.Security.Cryptography;

            //md5 加密
            byte[] result = Encoding.Default.GetBytes("admin123456");    
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] output = md5.ComputeHash(result);
            string str = BitConverter.ToString(output).Replace("-", "").ToLower();