Reply to post: Re: Secure?

Heathrow's air traffic radio set for shiny digital upgrade from Northrop

Paul Johnson 1

Re: Secure?

ATC still broadcasts in the clear on voice. This isn't because they haven't considered various forms of encryption, but any form of digital encryption or authentication means having absolutely reliable key distribution and revocation mechanisms across the entire world, including bits that aren't very sophisticated. The risks of doing this and getting it wrong are higher than the risks due to the current system.

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