After Dr Grime explained to us how the Enigma machine worked and showed us other ways of coding messages, we decoded our own. Dr Grime told us the most frequent letter in English was E, the second was T and the third was A. Using frequency analysis we were able to break the cypher and decode the message.
During the workshop we also worked with a partner to crack different codes, for example semaphore-flag positioning, the pigpen and Playfair methods - which use squares and boxes, and even tiny enigma codes. When the codes were broken, they revealed a fact about a person. After we had finished, we were able to guess that that person was Alan Turing.
We had such a brilliant time during the workshop, and everyone thoroughly enjoyed learning about cryptology.
- Natasha Leek 7G