The Fallacy of Controlling Encryption

David Cameron has announced that he intends to try to prevent encryption in the interests of protecting Britons from terrorism. It seems to me that he has not thought this through. In less than 10 minutes I came up with at least one plausible method to not only provide encryption, but to provide it in such a way that David’s spooks can’t detect that you are using it. At least they can’t be sure that you are using it from watching  your traffic.

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