Hans Rohrbach, Date of Birth, Place of Birth, Date of Death
TweetHans Rohrbach
German mathematician
Date of Birth: 
Place of Birth: Berlin
About Hans Rohrbach
- Hans Rohrbach (27 February 1903 – 19 December 1993) was a German mathematician.
- He worked both as an algebraist and a number theorist and later worked as cryptanalyst at Pers Z S, the German Foreign Office cipher bureau, during World War II.
- He was latterly known as the person who broke the American diplomatic O-2 cypher, a variant of the M-138-A strip cipher during 1943.
- Rohrbach wrote a report on the breaking of the strip cypher when he was captured by TICOM, the allied effort to roundup and seize captured German intelligence people and material.
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