1 / 8

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.

eddiey
Download Presentation

Enigma Machine

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related