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28 March 2024
 
  » arxiv » quant-ph/0406147

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Why Quantum Cryptography?
Kenneth G. Paterson ; Fred Piper ; Ruediger Schack ;
Date 21 Jun 2004
Subject quant-ph
AffiliationRoyal Holloway, University of London
AbstractQuantum 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. Unfortunately this fact is frequently overlooked, resulting 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 exchange protocols in realistic secure communication systems.
Source arXiv, quant-ph/0406147
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