File:"National Security Agency" art detail, from cover of Friedman Lectures on Cryptology (page 1 crop).jpg

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Description Six Lectures Concerning Cryptography and Cryptanalysis
Date
Source https://www.nsa.gov/Portals/70/documents/news-features/declassified-documents/friedman-documents/publications/ACC15281/41785109082412.pdf
Author William Friedman
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This article or image contains materials that originally came from a National Security Agency (NSA) website or publication. It is believed that this information is not classified, and is in the public domain in the United States. See the privacy and security information.
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current19:03, 12 February 2020Thumbnail for version as of 19:03, 12 February 2020463 × 469 (72 KB)Tibet Nation (talk | contribs)File:Friedman Lectures on Cryptology.pdf cropped 85 % horizontally, 85 % vertically using CropTool with precise mode.

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