Interesting talk. At the end he casually mentions so many things that he could also talk about, including that apparently the encryption on GLONASS military si

Interesting talk. At the end he casually mentions so many things that he could also talk about, including that apparently the encryption on GLONASS military signals was already hacked, and that many parts of the mil-spec GPS are "securiy through obscurity"... Is this true? If so, where can I find more reading material about this? It was my understanding that the P(Y) code in GPS is encrypted using (basically) a OTP, and not based on obscurity at all? Doesn't GLONASS use a similar system?