Die Rätselgeschichte: Die Wahrheit hinter der "unzerbrechlichen" Chiffre aus dem Zweiten Weltkrieg von John
28,43 €
The Enigma cipher was supposed to be the German's impenetrable defence for its military communications against prying eyes during World War II. All manner of secrets were entrusted to it. When the Allies finally managed to crack the code, it heralded a turning point in the war.
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