Quantum cryptography: a practical information security perspective

Details Quantum cryptography: a practical information security perspective Quantum cryptography: a practical information security perspective

2004-06-21

arxiv.org/abs/quant-ph/0406147v2

Published in Quantum Communication and Security, Proceedings, NATO Advanced Research Workshop, edited by M. Zukowski, S. Kilin

Physics

Quantum Physics

5 pages, new title, published version, minor changes only

Scientific paper

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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