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Enigma Machine

Enigma Machine. Origin of the Enigma. Beginning the 1900’s came with a rise of wireless communication which followed by a need of secure communication. 1917-Edward Hugh Hebern developed the cipher machine with rotating disks which became the base of several other designs.

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Enigma Machine

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  1. Enigma Machine

  2. Origin of the Enigma • Beginning the 1900’s came with a rise of wireless communication which followed by a need of secure communication. • 1917-Edward Hugh Hebern developed the cipher machine with rotating disks which became the base of several other designs. • Was not bought from the Germans until 1926, and it was modified to contain five disk rotors.

  3. Breaking the Code • In 1928, the Polish intercepted an Enigma being sent to the German embassy. • During the winter of 1932, a Polish cryptanalyst working for the Cipher Bureau for Polish Intelligence mathematically figured out the wiring of the first rotor. • During the course of the war codebooks were intercepted which helped to decode new rotors added to the enigma.

  4. How the Enigma Works • Used to decrypt and encrypt secret messages. • E = P(ρiRρ − i)(ρjMρ − j)(ρkLρ − k)U(ρkL − 1ρ − k)(ρjM − 1ρ − j)(ρiR − 1ρ − i)P − 1 • Designed to defeat basic cryptanalysis techniques by constantly changing the alphabet sequence.

  5. Military Uses • In 1934, the German Navy attached the enigma to a secure plug board and extended the rotors to eight. • Although considered still unbreakable by others, Admiral Karl Dönitz thought it could still be improved. • The Germans overall manufactured 100,000 machines.

  6. Simulator • http://homepages.tesco.net/~andycarlson/enigma/enigma_j.html

  7. The End

  8. References • http://russells.freeshell.org/enigma/history.html • http://users.telenet.be/d.rijmenants/en/enigma.htm • http://www.enigmahistory.org/enigma.html

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