The German SZ42 Cipher Machine Explained

#cryptology, #cryptography, #cryptanalysis

In this video, I explain the Lorenz SZ42, a ciphermachine used by the Germans during WWII. It was used for encryption of high-level communications beginning in mid 1942. The machine encrypts Baudot code using a pseudo-random generated keystream.

In the video, I explain how the cipher machine works and we analyze its keyspace size and unicity distance. We also create a workspace in CrypTool 2 to encrypt and decrypt text using the new SZ42 component.

If you are interested in learning the fundaments of cryptology, let me invite you to have a look at our video series about the basics of cryptology, also for beginners:    • Basics of Cryptology – Part 1 (Crypto...  

You can download the latest version of CrypTool 2 from here: https://www.cryptool.org/en/ct2/downl...

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