The GRANIT/160 Cipher Explained – A GDR Stasi Spy Cipher

#cryptology, #cryptography, #cryptanalysis In this video, we explain the GRANIT/160 cipher. It was used by spies of the GDR (German Democratic Republic) who spied in West Germany. A famous spy who used the cipher and who was caught was Günter Guillaume, who spied near Willy Brandt. In the video, we explain how the agent used the cipher, created keys, etc. Finally, we do this also in CrypTool 2, we encrypt and decrypt using the GRANITE cipher. 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: https://youtu.be/jbumW7Ym03o Links mentioned in the video: - Klaus Schmeh's German blog article about GRANIT: https://scienceblogs.de/klausis-krypto-kolumne/2015/11/17/granit-das-verschluesselungsverfahren-das-kanzler-spion-guenter-guillaume-zu-fall-brachte/ - Jörg Drobick‘s German homepage: http://scz.bplaced.net/m.html#granit You can download the latest version of CrypTool 2 from here: https://www.cryptool.org/en/ct2/downloads Visit my blog: https://www.kopaldev.de Join Discord server: https://discord.gg/8JeTZd8EpT Like what I do 😄? Help fuel my crypto obsession 🎓 — buy me a coffee here☕— thx: https://buymeacoffee.com/cryptographyforeverybody