Unlock the secrets of secure communication with ‘Cryptography’, a foundational guide perfect for every informed citizen. From ancient ciphers to modern digital encryption, this book demystifies the art and science of keeping secrets. Discover how cryptography protects your online interactions, business communications, and governmental data. Author Panos Louridas expertly navigates classical techniques, symmetric and asymmetric cryptography, protocols, and the future of quantum and post-quantum cryptography. Essential for understanding our digital footprint and privacy in the 21st century, this accessible introduction, part of the MIT Press Essential Knowledge series, makes complex concepts clear. Dive into the world of cryptography and safeguard your information.