Dive into the world of cryptography and codebreaking with this 32-minute keynote from Infosecurity Europe. Explore the intricacies of the Cipher Challenge, delving into topics such as Fermat's Last Theorem, pseudorandom output, and message decoding. Learn about the historical context of cryptography, including its role in the First World War and the famous Enigma machine. Discover the evolution of encryption methods, from single DES to triple DES, and understand their theoretical strengths. Gain insights into the lives of notable figures like Andrew Plata and Mavis Beatty, and how their contributions shaped the field of information security. Engage with practical aspects of codebreaking, including permutations, testing, and troubleshooting techniques. This thought-provoking keynote offers a comprehensive overview of cryptography's past, present, and future, making it essential viewing for both beginners and seasoned professionals in the field of information security.