The Case for Quantum Key Distribution

Details The Case for Quantum Key Distribution The Case for Quantum Key Distribution

2009-02-17

arxiv.org/abs/0902.2839v2

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, volume 36, page 2

Physics

Quantum Physics

12 pages, 1 figure; to appear in proceedings of QuantumComm 2009 Workshop on Quantum and Classical Information Security; versi

Scientific paper

10.1007/978-3-642-11731-2_35

Quantum key distribution (QKD) promises secure key agreement by using quantum mechanical systems. We argue that QKD will be an important part of future cryptographic infrastructures. It can provide long-term confidentiality for encrypted information without reliance on computational assumptions. Although QKD still requires authentication to prevent man-in-the-middle attacks, it can make use of either information-theoretically secure symmetric key authentication or computationally secure public key authentication: even when using public key authentication, we argue that QKD still offers stronger security than classical key agreement.

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