How to bring down mission-critical GPS networks with $2,500

Re: How to bring down mission-critical GPS networks with $2,500 by kevingadd on Friday December 14, 2012 @03:35PM (#4923162)

http://en.wikipedia.org/wiki/Public-key_cryptography

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Re: How to bring down mission-critical GPS networks with $2,500 by Genmutant on Friday December 14, 2012 @03:48PM (#4923247)

Yeah, but that doesn't help if you have the device which decrypts the signal. Then you should be able to get the key (which would probably still be fairly difficult).

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Re: How to bring down mission-critical GPS networks with $2,500 by ynniv on Friday December 14, 2012 @04:04PM (#4923323)

A receiver/decrypter only contains the public key, which can't be used to encrypt a new message. Perhaps you aren't familiar with asymmetric / public key cryptography?

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Re: How to bring down mission-critical GPS networks with $2,500 by vonmoltke on Friday December 14, 2012 @04:09PM (#4923357)

And that is one reason the US military spends so much money and effort on anti-tamper[1] design and technology.

[1] http://www.at.dod.afrl.hpc.mil/

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