Console.WriteLine("#######################");
            List<string> allInfos = new List<string>();
            string getID = identifier("Win32_BaseBoard", "SerialNumber");
            if (getID != "") allInfos.Add(getID);
            getID = identifier("Win32_BaseBoard", "SerialNumber");
            if (getID != "") allInfos.Add(getID);
            getID =identifier("Win32_BIOS", "SerialNumber");
            if (getID != "") allInfos.Add(getID);
            getID =identifier("Win32_Processor", "UniqueId");
            if (getID != "") allInfos.Add(getID);
            getID =identifier("Win32_DiskDrive", "SerialNumber");
            if (getID != "") allInfos.Add(getID);
            getID =identifier("Win32_OperatingSystem", "SerialNumber");
            if (getID != "") allInfos.Add(getID);

            testAllPossibility(allInfos.ToArray());
            Console.WriteLine("#######################");
            Console.ReadKey();
        }

        static string identifier(string wmiclass, string wmiproperty) {
            string result = "";
            ManagementClass mc = new ManagementClass(wmiclass);
            ManagementObjectCollection moc = mc.GetInstances();

            foreach (ManagementObject mo in moc) {
                if (result == "") {
                    try {
                        result = mo[wmiproperty].ToString();
                    } catch { }
                }
            }
            return result;
        }

        static string Hash(string input) {
            using (SHA1Managed sha1 = new SHA1Managed()) {
                var hash = sha1.ComputeHash(Encoding.UTF8.GetBytes(input));
                var sb = new StringBuilder(hash.Length * 2);

                foreach (byte b in hash) sb.Append(b.ToString("x2"));
                return sb.ToString();
            }
        }

        static void testAllPossibility(string[] text) {
            IEnumerable<string> results = Enumerable.Range(0, 1 << text.Length).Select(e => string.Join(string.Empty, Enumerable.Range(0, text.Length).Select(b => (e & (1 << b)) == 0 ? null : text[b])));
            foreach (string hashage in results) Console.WriteLine(Hash(hashage));
        }