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Quantum Cryptography: A Practical Information Security Perspective
Kenneth G. Paterson, Fred Piper, Rüdiger Schack
175 - 180
NATO Science for Peace and Security Series - D: Information and Communication Security
Volume 11: Quantum Communication and Security
Abstract

Quantum Key Exchange (QKE, also known as Quantum Key Distribution or QKD) allows communicating parties to securely establish cryptographic keys. It is a well-established fact that all QKE protocols require that the parties have access to an authentic channel. Without this authenticated link, QKE is vulnerable to man-in-the-middle attacks. Overlooking this fact results in exaggerated claims and/or false expectations about the potential impact of QKE. In this paper we present a systematic comparison of QKE with traditional key establishment protocols in realistic secure communication systems.

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