Editing Openai/692c8201-7a4c-800d-9ca0-5220fef3e400 (section)

=== • The format above reproduces the pad layout and the exact digitwise modular-10 addition rule that VENONA-era worksheets show in the declassified NSA materials. The Venona monograph and the NSA VENONA declassification package discuss and illustrate the KGB practice of superenciphering numeric code groups by adding random digit groups taken from one-time pads. nsa.gov<ref>{{cite web|title=nsa.gov|url=https://www.nsa.gov/portals/75/documents/about/cryptologic-heritage/historical-figures-publications/publications/coldwar/venona_story.pdf|publisher=nsa.gov|access-date=2025-11-30}}</ref> ===

• The pad fragment and worked example above are presented as a faithful reconstruction in the style and numeric arithmetic used in those training/cryptanalytic worksheets. If you want a direct scan from the NSA PDFs showing a historical example or a specific worksheet image from a particular page, specify that and I will point you to the exact PDF page(s) and image(s) in the NSA release. nsa.gov<ref>{{cite web|title=nsa.gov|url=https://www.nsa.gov/portals/75/documents/about/cryptologic-heritage/historical-figures-publications/publications/coldwar/venona_story.pdf|publisher=nsa.gov|access-date=2025-11-30}}</ref>

If you want the literal scanned image(s) from the declassified packet embedded or a page citation (PDF page number and location) for the public NSA PDF, I will provide the specific PDF page references next.