WebJul 29, 2016 · There are three main ways to protect against GPS spoofing: cryptography, signal-distortion detection, and direction-of-arrival sensing. No single method can stop every spoof, but Psiaki’s team has found that combining strategies can provide a reasonably secure countermeasure that could be commercially deployed. Who’s Out There? WebWhat is a cryptographic key? In cryptography, a key is a string of characters used within an encryption algorithm for altering data so that it appears random. Like a physical key, it locks (encrypts) data so that …

Space and Missile Systems Center - gps.gov

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Cryptographic Support Services - National Security Agency

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