3 ms·
This seems like great engineering (I am not competent enough to comment on that side of things), but I wanted to point out that "physically unclonable" here see
by krastanov 5y ago
This seems like great engineering (I am not competent enough to comment on that side of things), but I wanted to point out that "physically unclonable" here seems more like marketing speak, not something fundamentally unclonable. What they have might be very difficult to clone, but unless it is practically quantum-mechanical, then the laws of physics permit its exact measurement and copying.
- Rebelgecko 5y agoFrom what I've seen, PUFs tend to go for a level of security more like "unclonable except by a nation-state with physical access, a battalion of electron microscopes, and the willingness to expend person-years of effort". For example with a flip-flop PUF I think you'd need to reverse engineer miniscule imperfections in every single transistor.
- klyrs 5y agoAs far as I can tell, it uses blown fuses to encode the key. I'd bet Ken Shirriff (or anybody with similar hardware) could get the key out and clone this. Edit: my mistake, that's the old, busted being compared to the new, shiny. You'll need more than microphotography. As I recall, folks have done cool stuff inducing current with lasers, which could probably work here. Slightly fancier tech required, but I'm dubious that this is actualmy uncloneable