CIPHER MACHINES AND CRYPTOLOGY
Crypto's Cast
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ABOUT THE CAST

The Cast is a group of people with a passion for cryptography who record bite-size podcast episodes. The topics vary, and may include cipher machines, the history of cryptology, the technology and science behind it, historical events, from wars to espionage, that were influenced by cryptography, making and breaking codes, books and websites. We encourage the listener to explore the fascinating world of cryptography. Jump to Episode 01 (introduction) or read the copyright notice.


03 SECURING GOVERNMENT MESSAGES AFTER WW2 by MAARTEN OBERMAN 11 Apr 2024

Maarten Oberman talks about his father, Prof. Dr. Ir. Roelof Oberman, who started in 1935 as engineer at the Dutch state company Post Telegraphy and Telephone (PTT). From 1946 until 1957, Roelof Oberman was head of the switching department of the PTT Laboratory, where he developed the Colex and Ecolex one-time tape Telex crypto systems, and the Erolet random noise key generator. Oberman filed more than ninety patents, including some sixty cryptopatents. From 1958, Philips USFA took over the crypto developments from the PTT. Oberman then went fulltime to the TU-Delft until 1980.

Security of government messages immediately after the Second World War (translated to English)
R.M.M. Oberman Professor, scientist and inventor - Crypto Museum website (in English)
Beveiliging van overheidsberichten direct na de Tweede Wereldoorlog (original in Dutch)
De Beveiliging van Overheidsberichten, M.R. Oberman (book in Dutch)
Telex-berichtbeveiliging: De nooit onthulde Nederlandse cryptografische historie 1945-1965 (pdf)


02 FRITZ MENZER AND THE SG-41 by Dr. CAROLA DAHLKE 28 Mar 2024

Dr. Carola Dahlke is the curator of the department of Computer Science and Cryptology at the Deutsches Museum in Munich. In 2018, she embarked on a years long mission to unravel the mysteries of the SG-41 cipher machine and its creator Fritz Menzer. Although less known than the Enigma machine, the SG-41 was far more secure, yet never came into mass production. Carola talks about the machine, its history, preserving the SG-41 and the seven-part video series on Fritz Menzer.

Fritz Menzer – A secret Life and Cipher Devise 41 (in English)
Fritz Menzer – Ein geheimes Leben und Schlüsselgerät 41 (auf Deutsch)


01 INTRODUCING CRYPTO'S CAST by DIRK RIJMENANTS 28 Feb 2024

This first episode explains the origins of Dirk's interest in the world of cryptography and the purpose of this website and the cast. Together with other crypto enthusiasts, he hopes to tickle your interest in cryptologic history and its technology.

More at Cipher Machines and Cryptology


CRYPTO'S CAST IS OPEN FOR SUBMISSIONS

The authors are invited to submit their recordings. More info on selecting a topic, preparing and recording an episode, is now available at the authors page. If you still have questions or want to discuss a topic of interest, then contact us for tips and assistance. Join our mission to share cryptologic history!

Recording Guidelines & Tips for Authors


COPYRIGHT NOTICE - All recordings on this page are protected by international copyright laws. Any use of the content of this webpage, its audio recordings or images, including the use of data mining for the training of artificial intelligence systems, is strictly prohibited without express written consent of the original author. All rights reserved.

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© Dirk Rijmenants 2004. Last Changes: 12 April 2024

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