Hardware Identifiers

Unity Engine
1

This has been mentioned in other threads (e.g. How can I get a Persistent Unique Hardware ID? - Questions & Answers - Unity Discussions) but what I am looking for is a bit different.
SystemInfo.deviceUniqueIdentifier (Unity - Scripting API: SystemInfo.deviceUniqueIdentifier) on Windows returns a hash of a few strings from the Computer System Hardware Classes as mentioned in the documentation (Computer System Hardware Classes - Win32 apps | Microsoft Learn).
What is NOT mentioned is what type of hash algorithm is used. What I am looking for is a way to replicate this Unique ID on a normal WPF app(where I also have access to System.Management which I don’t in Unity). I guess on the WPF app I will be able to get the same string values that Unity gets to create the device unique identifier but then I will need to hash them with the same algorithm to get the same unique identifier in the end.
Any idea where I can get more info on this?

Thanks!

2

Any luck on this one?

3

Without getting access to their internal code you’re going to struggle to work it out but you could probably assume that they would either have used a standard C# hashing function or written one internally that’s used by other functions.

For example, the Unity - Scripting API: Animator.StringToHash function might use the same internal calculation. Either that or it could use the standard C# String.GetHashCode Method (System) | Microsoft Learn

4

Actually, looking into it a bit more it looks like the unique ID is 128-bits which may be using this:

5

You could check if deviceUniqueIdentifier is in the part of Unity that they have open sourced, and if so just see what they are doing.