Comment by okdood64
Comment by okdood64 10 months ago
Do you know if I can emulate car keys with it? Say a relatively modern BMW? Or is there some safety mechanism.
(Not for nefarious purposes, but just in case I can’t find my keys.)
Comment by okdood64 10 months ago
Do you know if I can emulate car keys with it? Say a relatively modern BMW? Or is there some safety mechanism.
(Not for nefarious purposes, but just in case I can’t find my keys.)
I think if you have enough replays you can deconstruct the rolling code. Not sure.
Also there are ways to desync/resync your key so you might be able to “add a key” with the flipper with certain firmwares.
Cloning the current key and using it can desync it from your car. Super annoying. Be careful
I don’t know exactly how the rolling key works but wouldn’t it be kind of like having a secret stored in the key that’s needed to generate the next code? If it’s designed properly, recording a few thousand codes shouldn’t tell you anything about the next code, just like you can’t deduce private keys by looking at a few thousand encrypted files. I have no clue if that’s really how it works, so I would be happy to be corrected if my mental model is wrong here.
Plenty of devices use the Keeloq protocol for rolling codes which is pretty straightforward to break in modern hardware.
I'd love to have this, mainly so that I could have a single dongle on my keychain for both my and my wife's car. I know others have said that there are issues around rolling codes. But it's possible to get official duplicate / replacement keys; how does that work?
IIRC it's somewhat possible but for some cars if you do it wrong it makes the car and key go out of sync which causes a lot of issues
The old Ford transponder keys don't do rolling codes.
Not natively. There is other firmware out there, though, that allows such functionality. Depending on where you live, it may be illegal to even try, though, hence the native firmware locking out such use (you can record or visualize but not save/replay).