Bletchley Park

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The Mansion 7/10/2004
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4-rotor Enigma machine @ Bletchley Park

Bombes were used against the Enigma cipher.

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Front panel, 3-rotor Bombe mockup
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Bombe under reconstruction
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Bombe under reconstruction

The Colossus computers were used against the Lorenz cipher. The reconstructed Mk2 has 2,500 valves.

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Reconstructed Colossus Mk 2 working(!) + Tony Sale
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Reconstructed Colossus Mk 2 working(!) 7/10/2004
(tape wheel frozen by the flash)
Coding Ockham's Razor, L. Allison, Springer

A Practical Introduction to Denotational Semantics, L. Allison, CUP

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Bletchley Park .org.uk
Codes And Ciphers .org.uk [10/2004]
Bombe -- John Harper [10/2004]
© L. Allison   http://www.allisons.org/ll/   (or as otherwise indicated),
Faculty of Information Technology (Clayton), Monash University, Australia 3800 (6/'05 was School of Computer Science and Software Engineering, Fac. Info. Tech., Monash University, was Department of Computer Science, Fac. Comp. & Info. Tech., '89 was Department of Computer Science, Fac. Sci., '68-'71 was Department of Information Science, Fac. Sci.)
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