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Technical and historical information about WW2 and Cold War cipher machines and the fascinating world of cryptology. Learn how crypto equipment works and how it is operated. You can download realistic software simulations that work exactly like the real machines. This website is also preserved on the Internet Archive.

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U.S. KL-7 ADONIS

Enigma Simulator

One-Time Pad

Numbers Stations

Operation Tinker Bell

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RECENT UPDATES * 23 November 2023 - Refresh for newest updates

Enigma and Hagelin webpage menus updated. Refresh all relevant pages and css
Operation Tinker Bell Jan Bayer is the 24th to complete the operation.
Machines Timeline Added more machines and details about Enigma variants.
All Web Pages Images relocated. Refresh all pages to correctly load images!
More Updates available in the updates archive (also via the icon on the left)

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