Comment on Commercial Flights Are Experiencing 'Unthinkable' GPS Attacks and Nobody Knows What to Do
_s10e@feddit.de 11 months agoGPS is old, the amount of data you get from the satellite is small, essentially satellite id and timestamp. If we would redesign this today, you could include a digital signature.
Sure, but… you can google this to verify … one can probably manipulate GPS by introducing delay, i.e. resend data from a sat that was hear some seconds ago. With this signal the location will be off.
Treczoks@lemmy.world 11 months ago
But that would also mean the timestamp to be off. Just resending them would also require extremely precise timing if you want to simulate a position that is not anywhere but just a bit off the last position. Making a GPS position jumping around half the world is (comparably) easy, pushing it off for a few kilometers is much, much harder.