The Bombe was a machine created by Alan Turing to crack the Enigma machine it was an electromechanical machine that basically bruteforced all the possible settings for a crib(known text), to match up to a enciphered string, by using logical deductions until you got a few possible settings. Then Alan Turing and his group would test them.


The Bombe

It would stop turning on the settings when it got a possible answer and you would get the settings. 
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