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Marian Adam Rejewski was a Polish mathematician and cryptologist who in late 1932 reconstructed the sight-unseen German military Enigma cipher machine, aided by limited documents obtained by French military intelligence. Over the next nearly seven years, Rejewski and fellow mathematician-cryptologists Jerzy Różycki and Henryk Zygalski developed and used techniques and equipment to decrypt the German machine ciphers, even as the Germans introduced modifications to their equipment and encryption procedures. Five weeks before the outbreak of World War II the Poles, at a conference in Warsaw, shared their achievements with the French and British, thus enabling Britain to begin reading German Enigma-encrypted messages, seven years after Rejewski's original reconstruction of the machine. The intelligence that was gained by the British from Enigma decrypts formed part of what was code-named Ultra and contributed—perhaps decisively—to the defeat of Germany.
The AVA Radio Company was a Polish electronics firm founded in 1929 in Warsaw, Poland. AVA designed and built radio equipment for the Polish General Staff's Cipher Bureau, which was responsible for the radio communications of the General Staff's Oddział II.
The Enigma Cipher Centre is an interactive multimedia exhibition in Poznan dedicated to the Enigma cipher machine and the three Polish cryptologists -- Marian Rejewski, Henryk Zygalski and Jerzy Rozycki—who played a key role in its early cryptanalysis. It is located in the former Collegium Historicum building. The Enigma Cipher Centre is a brand of the Poznan Heritage Center.
References
- ↑ Budiansky, Stephen (2000). Battle of Wits: The Complete Story of Codebreaking in World War II. Simon and Schuster. ISBN 9780684859323.
- ↑ Hinsley, F. H.; Stripp, Alan (2001). Codebreakers: The Inside Story of Bletchley Park. Oxford University Press. ISBN 9780192801326.
- ↑ Haufler, Hervie (2014). Codebreakers' Victory: How the Allied Cryptographers Won World War II. Open Road Media. ISBN 9781497622562.
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