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Encryption of WWII

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Title: PowerPoint Presentation Author: Phil Last modified by: Phil Created Date: 10/24/2011 9:21:17 PM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

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Title: Encryption of WWII


1
Encryption of WWII
  • Philip Gebhardt
  • 10/24/2011

2
Interest
3
(No Transcript)
4
The Possibilities
  • (plug-board)
  • (selection of rotors)
  • (arrangement of rotors)
  • (starting position of each rotor)
  • (notch setting of each rotor)
  • (reflector configuration)

5
The Possibilities
  •  

6
Purpose
7
  • Polish mathematical analysis in 1932
  • Used analysis of cycles of letter transformations
  • Alan Turings Bombe machine in 1939-40
  • The U-Boat Enigma, Lorenz, and the Colossus
  • Tommy Flowers
  • The worlds first programmable computer

8
Some Interesting Sources
  • How Polish Mathematicians Deciphered the Enigma
  • Marian Rejewski, Polish Cipher Bureau (1932-39)
  • Test-driven development of an Enigma Simulator
  • http//tdd-deciphered.com/
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