Rju Tsq Sz Koxjuhm: The Multiplication Cipher

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Cipher cracking is food for the brain. Often when you give kids a cipher puzzle, and you’ll struggle to get them to stop cracking them. In groups they will talk, and share ideas, and then the work together to solve them. There’s something magical about taking something that is secret and discovering it. So let’s do a little bit of cipher creation.

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Prof Bill Buchanan OBE FRSE
ASecuritySite: When Bob Met Alice

Professor of Cryptography. Serial innovator. Believer in fairness, justice & freedom. Based in Edinburgh. Old World Breaker. New World Creator. Building trust.