File:NSA DIANA one time pad.tiff
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This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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Summary
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English: A format of one-time pad used by the U.S. National Security Agency, code named DIANA. The table on the right is an aid for converting between plaintext and ciphertext using the characters at left as the key. The black circle is an artifact of copying, due to a hole punched in the original. |
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| Source | https://www.governmentattic.org/18docs/Hist_US_COMSEC_Boak_NSA_1973u.pdf A History of U.S. Communications Security; the David G. Boak Lectures, National Security Agency (NSA), Volumes I, 1973, Volumes II 1981, partially released 2008, additional portions declassified October 14, 2015 |
| Author | US National Security Agency |
Licensing
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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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| Date/Time | Dimensions | User | Comment | |
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| current | 04:08, 12 July 2018 | 910 × 806 (733 KB) | TemTem | Reduced filesize |
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