Das Rätsel brechen: Triumph und Tragödie des deutsch-polnischen Chiffrekrieges von Otma
46,07 €
In the 1920s the German Reichswehr adopts the cipher machine Enigma to secure military radio communication. Marian Rejewski, a young mathematician employed by the Polish Armys General Staff, finally succeeds in reconstructing the machine, breaking its codes and decrypting its ciphers.
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