Preface

TL;DRAbstract

This book aims at giving an introduction to the principles and techniques of quantum cryptography, including secret-key distillation, as well as some more advanced topics. As quantum cryptography is now becoming a practical reality with products available commercially, it is important to focus not only on the theory of quantum cryptography but also on practical issues. For instance, what kind of security does quantum cryptography offer? How can the raw key produced by quantum cryptography be efficiently processed to obtain a usable secret key? What can safely be done with this key? Many challenges remain before these questions can be answered in their full generality. Yet quantum cryptography is mature enough to make these questions relevant and worth discussing.

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