Book review: Introduction to Quantum Cryptography Thomas Vidick and Stephanie Wehner | Review by Barry R. Masters This exciting, clearly written and self-contained textbook is derived from the online course (the MOOC “Quantum Cryptography” on edX) that the authors taught at the California Insitute of Technology, USA, and Delft University of Technology, Netherlands. It is an ideal way for those interested in quantum cryptography to enter the field with no prior knowledge and emerge with the understanding and the tools to progress. This book also offers readers access to current literature and the opportunity to derive new quantum cryptography protocols. The basic problem covered is how to use quantum phenomena to develop protocols that permit communication of information with various degrees of security, which the authors provide the quantum information and the mathematical background for the reader to delve into. Furthermore, quantum key distribution protocols are clearly explained...