C#字符串混淆器（内嵌md5加密）

//需要添加命名空间
System.Security.Cryptography;
System.Text;
//=========================================================================================
        /// <summary>
        /// 字符串混淆器
        /// </summary>
        /// <param name="str">要混淆的字符串</param>
        /// <param name="ints">长度为16的整型数组，要求0到30，可重复</param>
        /// <param name="chars">长度为小于等于32的字符数组，字符可为任意字符，参与字符打乱</param>
        /// <returns></returns>
        public static string Confused(string strs, int[] ints, char[] chars)
        {
            string strchange = "";
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            //获取到的str转成UTF8编码的字节数组，转成字节数组后才能放到md5.ComputeHash这个里面
            byte[] bytes1 = Encoding.UTF8.GetBytes(strs);
            string str = BitConverter.ToString(md5.ComputeHash(bytes1)).ToLower().Replace("-", "");
            foreach (int item in ints)
            {
                strchange += str.Substring(item, 2);
            }
            char[] chararray = strchange.ToCharArray();
            string ConfusedStr = "";
            for (int i = 0; i < chars.Length; i++)
            {
                ConfusedStr += ((int)chararray[i]).ToString() + ((int)chars[i]).ToString();
            }
            byte[] bytes2 = Encoding.UTF8.GetBytes(ConfusedStr);
            return BitConverter.ToString(md5.ComputeHash(bytes2)).ToLower().Replace("-", "");
        }
        //=========================================================================================