Marian Rejewski

Marian Adam Rejewski (Polish: [ˈmarjan rɛˈjɛfskʲi] (listen); 16 August 1905 – 13 February 1980) was a Polish mathematician and cryptologist. In 1932, he helped create the Enigma cipher machine. His invention helped Britain to begin reading German Enigma-encrypted messages.

Marian Rejewski
Rejewski, c. 1943–44
Born	Marian Adam Rejewski (1905-08-16)16 August 1905 Bromberg, German Empire (now Bydgoszcz, Poland)
Died	13 February 1980(1980-02-13) (aged 74) Warsaw, People's Republic of Poland
Cause of death	Heart attack caused by heart disease
Occupation(s)	Mathematician, cryptologist
Known for	Solving the Enigma-machine cipher
Awards	Order of Polonia Restituta, Grand Cross[1] War Medal 1939–1945[2] Knowlton Award[3] IEEE Milestone Award.[4][5]
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Rejewski died of a heart attack caused by heart disease on 13 February 1980 in Warsaw, Poland, aged 74.