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William F Friedman - (Friedman, William F)

Page history last edited by Jack Daniel 4 weeks ago

 

From Wikipedia: "William F Friedman 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."

Wikipedia: https://en.wikipedia.org/wiki/William_F._Friedman

Friedman Legacy (226 page PDF) at NSA.gov: https://www.nsa.gov/Portals/70/documents/resources/everyone/digital-media-center/video-audio/historical-audio/friedman-legacy/friedman-legacy-transcript.pdf

Audio records and transcripts at NSA.gov: https://www.nsa.gov/resources/everyone/digital-media-center/video-audio/historical-audio/friedman-legacy/

 

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