Tuesday, April 28, 2015

NSA Releases 52,000 Pages of Friedman Papers

In one of its largest and most significant declassification and release of documents to date, the National Security Agency (NSA) released over 52,000 pages of historical material relating to the career of William. F. Friedman.

Considered the dean of American Cryptology, William F. Friedman (1891–1969) was a pioneer in the field as one of the first to apply scientific principles to the making and breaking of codes. His most well-known accomplishment was leading a small team which broke Japan’s “Purple” diplomatic cipher prior to the Pearl Harbor attack, but through his lectures, textbooks, and mentorship Friedman also trained several generations of American cryptologists, thus laying the foundation for the 20th century U.S. signals intelligence community.


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