/// <summary> /// Combine appName, CPU ID, Disk C Volume Serial Number and Motherboard Serial Number as device Id /// if user_mobile is set, it is first input for device Id /// </summary> /// <param name="appName"></param> /// <param name="user_mobile">if set, it is first input for device Id</param> /// <returns></returns> public static string GenerateUID(string appName, string user_mobile = null) { //Combine the IDs and get bytes string _id = user_mobile == null? string.Concat(appName, GetProcessorId(), GetMotherboardID(), GetDiskVolumeSerialNumber()) : string.Concat(user_mobile, appName, GetProcessorId(), GetMotherboardID(), GetDiskVolumeSerialNumber()); byte[] _byteIds = Encoding.UTF8.GetBytes(_id); //Use MD5 to get the fixed length checksum of the ID string MD5CryptoServiceProvider _md5 = new MD5CryptoServiceProvider(); byte[] _checksum = _md5.ComputeHash(_byteIds); //Convert checksum into 4 ulong parts and use BASE36 to encode both string _part1Id = BASE36.Encode(BitConverter.ToUInt32(_checksum, 0)); string _part2Id = BASE36.Encode(BitConverter.ToUInt32(_checksum, 4)); string _part3Id = BASE36.Encode(BitConverter.ToUInt32(_checksum, 8)); string _part4Id = BASE36.Encode(BitConverter.ToUInt32(_checksum, 12)); //Concat these 4 part into one string string uid = string.Format("{0}-{1}-{2}-{3}", _part1Id, _part2Id, _part3Id, _part4Id); return(uid); }
public static byte[] GetUIDInBytes(string UID) { //Split 4 part Id into 4 ulong string[] _ids = UID.Split('-'); if (_ids.Length != 4) { throw new ArgumentException("Wrong UID"); } //Combine 4 part Id into one byte array byte[] _value = new byte[16]; Buffer.BlockCopy(BitConverter.GetBytes(BASE36.Decode(_ids[0])), 0, _value, 0, 8); Buffer.BlockCopy(BitConverter.GetBytes(BASE36.Decode(_ids[1])), 0, _value, 8, 8); Buffer.BlockCopy(BitConverter.GetBytes(BASE36.Decode(_ids[2])), 0, _value, 16, 8); Buffer.BlockCopy(BitConverter.GetBytes(BASE36.Decode(_ids[3])), 0, _value, 24, 8); return(_value); }