As we have noted, Germany’s “unbreakable” Enigma ciphers were in fact broken. Early versions of the Enigma were broken by a team of Polish mathematicians led by Marian Rejewski using a machine designed by Rejewski called a bomba. More complex versions of the Enigma were later broken at Bletchley Park by a team of Allied mathematicians that included Alan Turing using a machine designed by Turing called a bombe. Books that describe some of the technical details regarding the cryptanalysis of the Enigma tend to focus more on Rejewski’s bomba; for example, see [2], a comprehensive history of cryptology written by a colleague whose interest in the subject was inspired in part by the same person who inspired ours. In this ...
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