76 lines
3.2 KiB
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76 lines
3.2 KiB
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From fork-admin@xent.com Wed Oct 2 11:48:05 2002
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From: Eirikur Hallgrimsson <eh@mad.scientist.com>
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Organization: Electric Brain
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To: Rohit Khare <khare@alumni.caltech.edu>, fork@example.com
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Subject: Re: Optical analog computing?
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Date: Tue, 1 Oct 2002 23:30:47 -0400
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Uh, WWII Enigma was cracked at Bletchly Park, based on the work of some
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Poles, who had been trying to figure out when they would be invaded.
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Entirely mechanical! Definitely not optical at all. Enigma was
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originally broken based on bad use practice. If it had been employed more
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sensibly it would have been a lot harder.
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See "The Code Book" by Singh, Doubleday, 1999. Or, for that matter,
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"Cryptonomicon" by Stephenson, which is a fictionalization of the Enigma
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cracking story, and pretty accurate.
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I eventually get born as a side-effect of the Battle of Britain, you
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see....
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Computing with interference patterns, etc, makes perfect sense, but Enigma
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was cracked by building mechanical systems that were essentially Enigma
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machines and brute-forcing.
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Eirikur
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