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. Provided by Wikipedia-
1by Rohrbach, Hans, 1903-
Published 1953
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2by Rohrbach, Hans, 1903-
Published 1954
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7by Rohrbach, Hans, 1903-
Published 1966
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9by Rohrbach, Hans, 1903-
Published 1967
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10by Rohrbach, Hans, 1903-
Published 1965
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12by Rohrbach, Hans, 1903-
Published 1966
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