Marian Rejewski
Marian Adam Rejewski (16 August 1905 – 13 February 1980) was a Polish mathematician and cryptologist. In late 1932 he reconstructed the sight-unseen German military Enigma cipher machine. His work enabled Britain to begin reading German Enigma-encrypted messages. He remained silent about his prewar and wartime cryptologic work to avoid adverse attention from the country’s Soviet-dominated government.
