Comment on Commercial Flights Are Experiencing 'Unthinkable' GPS Attacks and Nobody Knows What to Do
Creat@discuss.tchncs.de 7 months agoyou can’t have authentication in a one way system. satellites send days, planes receive it, but never send anything.
nailbar@sopuli.xyz 7 months ago
You can have a digital signature, so the recievers know it’s legit
x4740N@lemmy.world 7 months ago
randombullet@feddit.de 7 months ago
That’s not how PKI works?
Unless you know how digital signatures work better than me
zalgotext@sh.itjust.works 7 months ago
If you’ve figured out how to do that, a lot of governments would pay you a lot of money for your solution
nailbar@sopuli.xyz 7 months ago
You can’t copy a signature, since it is different every time the signed content is different. You need to have the correct key in order to make a valid signature.
Creat@discuss.tchncs.de 7 months ago
yes of course, but that isn’t authentication.
nailbar@sopuli.xyz 7 months ago
Playing with semantics a little, it can be thought of as the satellite authenticating with the client using the signature as password.