Comment on Canada to ban the Flipper Zero to stop surge in car thefts

• twack@lemmy.world ⁨8⁩ ⁨months⁩ ago

  Isn’t that because it can desync the actual keyfob?

  Nvm… Clicked the link. That’s exactly why you shouldn’t do that.

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  • Buddahriffic@lemmy.world ⁨8⁩ ⁨months⁩ ago

    Ah, so the cars still have shitty security implementations, only now it’s in the direction of “car needs service if someone tries to playback a previous signal”.

    Though how does it work when you hit the button while out of range of the car?

    It should be each fob has a private key that is used to generate a cryptographic hash of a random challenge string. Or hell, even give a rolling code a sequence number so they the car and fob can resync if necessary (I don’t think this would break the security, since the sequence could be started at a number other than 0).

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    • jkrtn@lemmy.ml ⁨8⁩ ⁨months⁩ ago

      That sounds dangerously close to an open standard that would prevent charging $500 for key fobs.

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      • Buddahriffic@lemmy.world ⁨8⁩ ⁨months⁩ ago

        Any open standard can be tweaked slightly to make it a closed propriety one!

        Though I do wish open standards were enforced for cars. Instead of each car/platform essentially being a mini monopoly that third parties need to design for specifically if they want to compete.

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  • Fapper_McFapper@lemmy.world ⁨8⁩ ⁨months⁩ ago

    That is my understanding and why I haven’t ventured into that area with my personal vehicles yet.

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