Canada to ban the Flipper Zero to stop surge in car thefts::The Canadian government plans to ban the Flipper Zero and similar devices after tagging them as tools thieves can use to steal cars.

  • twack@lemmy.worldEnglish
    5·
    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.

    • Buddahriffic@lemmy.worldEnglish
      1·
      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).