Cryptography

By Bethany.X

  • Enigm Mchine invented

    Enigm Mchine invented
    1915, two Dutch Naval officers invented a machine to encrypt messages. This became known as the Enigma machine.

  • German businessman

    German businessman
    1918, Arthur Scherbius, a German businessman, patented the Enigma machine.

  • Enigma machine

    Enigma machine
    Mid 1920s, mass production of Enigma machine with 30,000 machines being sold to the German military over the next 2 decades.

  • Crypt analysis

    Crypt analysis
    The Poles set up a world leading crypt analysis bureau and hired leading mathematicians such as Marian Rejewski.

  • Marian Rejewski

    Marian Rejewski
    Marian Rejewski built his own model of the Enigma machine without having actually seen it.

  • Rejewski Germans

    Rejewski Germans
    In 1931, a German traitor told Rejewski that the Germans routinely changed the daily key indicator setting for the codes.

  • Enigma machine

    Enigma machine
    To find the daily key, Rejewski build 6 replicas of the Enigma machine and connected them.

  • The bomb

    The bomb
    The new machine could run through more than 17,000 indicator settings. He called this machine, ‘the bomb’.

  • German Enigma

    German Enigma
    The bomb was used to secretly read the traffic from the German Enigma machines for several years.

  • Poles

    Poles
    In 1938 Germans added two new roters into the Enigma machine. This made it harder for the Poles to read the traffic