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Are Tesla seriously that bad at crypto that they can't prevent a replay attack? A time-based MAC (Message Authentication Code) system like those used by bank 2F
by sansnomme 7y ago
Are Tesla seriously that bad at crypto that they can't prevent a replay attack? A time-based MAC (Message Authentication Code) system like those used by bank 2FAs can go quite a long way. You just have to resync the clock when you change the battery.
E.g. See Tuomas Aura's most excellent paper:
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.69.1965&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.69....
- cbanek 7y agoThe article said it's a relay attack, not a replay attack: https://hackernoon.com/signal-amplification-relay-attack-sara-609ce6c20d4f https://hackernoon.com/signal-amplification-relay-attack-sar...
- sdflhasjd 7y agoIt's not a replay attack, it's a relay attach where the signal is amplified further than the usual range of the keyfob.