Enigma History
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Enigma History

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History of the Enigma machine and its importance in World War II.

History of the Enigma machine and its importance in World War II.

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    Enigma History Enigma History Presentation Transcript

    • The Enigma Machine Overlake School January 16, 2002 Mike Koss
    • Battle of the Atlantic - World War II
      • The Germans used submarines to try to stop the Americans from sending war supplies to the British.
    • Submarine Tracking
      • The British tried to keep careful track of submarine locations to keep shipping convoys out of harms way.
    • Communication Secrecy
      • The Germans needed a way to secretly communicate with their submarines.
    • The Enigma Machine
      • The Germans adapted a machine for encoding all military communications which they believed to be unbreakable…but…
    • Code Breakers of Bletchley Park
      • The British assembled a team of mathematicians, crossword puzzle geniuses, and clerks to break the German codes.
    • First Computers Invented
      • Along the way, they invented the world’s first digital stored program computer to help them crack the hardest German codes.
      Colossus
    • Demo: Sending an Enigma Message
      • Set up today’s rotor settings from the published (secret) code book.
      • Chose a three-letter message key.
      • Encode the message key (twice: e.g., XYZ-XYZ).
      • Set rotors to message key setting.
      • Encode the message.
    • Demo: Receiving an Enigma Message
      • Set up today’s rotor settings from the published (secret) code book.
      • Decode the first 6 letters of the message to get the message key.
      • Set the rotors to the message key setting.
      • Decode the contents of the message.
    • How Enigma Works
      • Enigma uses a system of 3 or 4 “rotors” that electrically connect a keyboard to a “lamp-board”.
    • Scrambling Letters
      • Each letter on the keyboard is connected to a lamp letter that depends on the wiring and position of the rotors in the machine.
    • Other Machines
      • M-94: United States – Thomas Jefferson patented, used in civil war through WW II.
      • M-209: United States – used by WW II paratroopers.
      • NEMA: Swiss “New Machine” – a better Enigma.