Book 1 — Wartime Codebreaking
Enigma, Bletchley Park, and the codebreakers who changed the course of World War II.
Balancing the technical rigour of a textbook with the narrative flow of a novel, Cryptography Castle is an educational adventure that captures the fundamental concepts and fascinating history of cryptography in an engaging manner. Join Hanne as she explores the castle and discovers the secrets of cryptography from Princess Alice and Prince Bob.
What's inside
From the Caesar cipher to the birth of modern computing
Foundations
Classical Ciphers
Caesar, Vigenère, and Alberti ciphers, and the techniques used to break them.
Wartime
Enigma & Lorenz
The complex German cipher machines, and how the Polish and British codebreakers broke them.
History
Bletchley Park
The people and machines behind Ultra intelligence, and its impact on the war's outcome.
Legacy
Turing & the Birth of AI
Alan Turing's pioneering work, and how wartime codebreaking gave rise to modern computing and AI.