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I'm afraid I don't know what those are, Commander Denniston.
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Have a pleasant trip back to Cambridge, Professor.
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Enigma.
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You called for me?
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That's what you're doing here. The top-secret program at Bletchley.
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You're trying to break the German Enigma machine.
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What makes you think that?
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It's the greatest encryption device in history,
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and the Germans use it for all major communications.
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If the Allies broke Enigma, well...
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this would turn into a very short war, indeed.
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Of course that's what you're working on.