The Code Book (Simon Singh)

"The Code Book" by Simon Singh explores the history and science of cryptography—how secret messages are created and decoded. It takes readers through significant milestones in the field, from ancient techniques to modern encryption methods like those used in the internet and banking. Singh explains the importance of mathematics in creating secure communications and delves into famous codes, including the Enigma machine used in World War II. The book highlights the ongoing battle between code-makers and code-breakers, emphasizing how cryptography shapes our understanding of privacy and security in the digital age.