William F. Friedman
American cryptologist (1891–1969) / From Wikipedia, the free encyclopedia
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William Frederick Friedman (September 24, 1891 – November 12, 1969) was a US Army cryptographer who ran the research division of the Army's Signal Intelligence Service (SIS) in the 1930s, and parts of its follow-on services into the 1950s. In 1940, subordinates of his led by Frank Rowlett broke Japan's PURPLE cipher, thus disclosing Japanese diplomatic secrets before America's entrance into World War II.
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Quick Facts Born, Died ...
William F. Friedman | |
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Born | Wolf Friedman September 24, 1891 |
Died | November 12, 1969(1969-11-12) (aged 78) Washington, D.C., United States |
Nationality | Romanian, Russian, American |
Occupation | Engineer |
Spouse | Elizebeth Smith Friedman |
Children | 2 |
Engineering career | |
Significant advance | cryptologist |
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