Would these kind of attacks be made redundant by Galileo?
GPS spoofing can be done as a replay attack; record the signal at the airport, rebroadcast at the Kremlin louder than the direct satellite signal and voilà, your receiver says you’re at the airport.
As it’s just a replay attack of the original signal, encryption can’t help.
Couldn't this be mitigated by added a nonce or using CBC within the cryptosystem? Replay attacks are well understood; I'd be surprised if any (eventual) proposal for signed/encrypted GPS didn't include something to defend against them.
The receiver sees the rebroadcast because it captures the receiver's RF chain by being the strongest signal.
I would have thought that the military level GPS signals might have something similar already.