Commercial Flights Are Experiencing ‘Unthinkable’ GPS Attacks and Nobody Knows What to Do::New “spoofing” attacks resulting in total navigation failure have been occurring above the Middle East for months, which is “highly significant” for airline safety.
If they shared the encryption keys, then it wouldn’t be safe from spoofing anymore. The whole point of encryption is to not share the keys.
Also, before someone tries to point out PKI, the satellites don’t use PKI. So that’s not relevant. You can’t share the current keys without jeopardizing the system.
PKI? I assume you mean asymmetric encryption? That’s been available long before the GPS system was launched. Why do you think it isn’t relevant? They could have designed it into the protocol if they wanted to.
The military didn’t design it for civilian use. That’s really all there is to it. The commenter I was replying to made it sound like theres an easy solution here. There isn’t.
I’m the commenter you originally replied to. If the US military wanted unspoofable GPS available to everyone then it would be available to everyone. They only want the public to have unencrypted GPS, so that’s all we get.