Given a good enough programmer/cryptographer with a good PC you could decrypt just about any thing. The reason is that anyone that spends enough time to learn how to really encrypt something must have some sort of logical mind….so all you would need to do is to find a key…witch takes you back to the computer…just think what would have happened in WWII if they had the tech base that we have know and all we can do is get better from here.

sorry if this does not make sence as I have had toooooo much beer for my own good.