Our Mission

Cipher Machines and Cryptology invites you to explore the intriguing world of cryptography and codebreaking and discover how a seemingly dry subject can become a fascinating journey through history. Explore cipher machines, discover how they work and how they were used. Look beyond the familiar World War II and Cold War stories to uncover the wider importance of cryptology and intelligence work. Through historically authentic software simulations and extensive historical research, we bring some of the marvels of cryptology to life while maintaining respect for their history.

The content of this website is based on archives from various cryptologic and intelligence services and museums, as well as research and collaboration with historians and collectors. Whenever possible, original documents and sources are provided on-site, or links to the relevant authors or organizations are available. The website was founded in 2004 by Dirk Rijmenants, an independent researcher with a passion for cryptology and history.

The many visitors and kind feedback encourage us to update and expand this website regularly. More info at the updates archive. We appreciate all feedback, additional information, and reports of broken links, as they help us improve this site. You can send an e-mail or provide feedback in the guestbook.

History is here to learn and experience!

Copyright Notice

The website is created for educational purposes and its content and images are protected by international copyright laws. If you would like to use content or images from this website, please ask first and permission is usually granted for non-commercial use, provided that the following copyright notice is added: "© Dirk Rijmenants" and a link to the website or the relevant page.

All photos, images and drawings are copyrighted, but some content comes from unknown sources. If you encounter copyrighted material on this website without proper reference, then please contact us, and we will add the proper credits and references, or remove the material. Contact us for further questions regarding the use of copyrighted content.

Privacy Statement & Cookie Policy

The website is non-commercial and non-subsidized, and supports HTTPS to browse the pages securely. The privacy of the visitors is respected, and the website does not use any online or offline database. No personal information about individual visitors is stored, disclosed or sold to any third party. If you contact us, your e-mail address will only be used to reply if necessary. When you send a guestbook entry, your e-mail address is by default not published.

The website uses Statcounter web statistics to help improve and optimize the content, performance and compatibility. For this purpose, one analytic performance cookie is sent to your computer. No personally identifiable information is retrieved or recorded. The statistics are date and time, visited page, browser, operating system version, screen resolution, referring link and IP address. You can opt to refuse Statcounter cookies. Read more on how to change the cookie settings directly in your Chrome, Firefox, Safari, Edge or Opera browser.

Disclaimer

To the best of our knowledge, this website contains only unclassified information. All content has been obtained from publicly available sources. Wherever possible, references and links to these sources have been provided. Although we make every effort to ensure that the information on this website is accurate, we cannot guarantee that it is complete, accurate, or free from errors. Consequently, we accept no liability for any loss or damage arising from the use or misuse of the information on this website, or its suitability for any particular purpose. All links to external websites have been selected carefully for their informational value and quality. While we make every effort to curate those links, we are not responsible for the content or availability of external websites.

Translation Options

You can switch between English and Dutch (Nederlands) by selecting the desired language on the Home page. Do not use your browser's Back button immediately after switching languages, as this will return you to the previous language. Simply continue browsing in the language you selected.

English and Dutch are the only languages available on-site. All pages are written manually in both languages to ensure that technical terms and names are translated accurately, while certain technical names are intentionally retained. Please note that browser-based or online translation tools for other languages may produce inaccurate translations, particularly for complex technical content.