File:Preliminary Historical Report on the Solution of the "B" Machine.pdf
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Summary
| Description |
English: Report on the solution of the World War II Japanese Type B Cipher Machine, also known by its codename "Purple" |
| Date | |
| Source |
National Security Agency https://www.nsa.gov/Portals/70/documents/news-features/declassified-documents/friedman-documents/reports-research/FOLDER_211/41760789079992.pdf |
| Author | William F. Friedman |
Licensing
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 21:01, 5 October 2020 |  | 1,270 × 1,585, 12 pages (753 KB) | Awestricken | Uploaded a work by William F. Friedman from National Security Agency https://www.nsa.gov/Portals/70/documents/news-features/declassified-documents/friedman-documents/reports-research/FOLDER_211/41760789079992.pdf with UploadWizard |
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- Page:Preliminary Historical Report on the Solution of the "B" Machine.pdf/1
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- Index:Preliminary Historical Report on the Solution of the "B" Machine.pdf