3 ms·
> I have the patent(s) to show it. > I developed > Ultimately, it comes down to fairly tight timings, the speed of light and the rules of physics, but we coul
by lloeki 4y ago
> I have the patent(s) to show it.
> I developed
> Ultimately, it comes down to fairly tight timings, the speed of light and the rules of physics, but we could restrict things such that the cryptographic handshake would fail if you were more than about 30 meters away, corresponding to a timing window of about 0.0000001 seconds.
Prior art! ;)
https://web.mit.edu/jemorris/humor/500-miles https://web.mit.edu/jemorris/humor/500-miles
- yc-kraln 4y ago(Yes, I realize your comment was tongue-in-cheek) There are actually a lot of patented ways to prevent relay attacks, mine is only one of them. And most of them are patented by NXP :) Ultimately, this is a failure of prioritization on behalf of the car companies, or a sacrifice of security for usability, or both.