A Quantum Key Distribution (QKD) network is an infrastructure capable of performing long-distance and high-rate secret key agreement with information-theoretic security. In this paper we study security properties of QKD networks based on trusted repeater nodes. Such networks can already be deployed, based on current technology. We present an example of a trusted repeater QKD network, developed within the SECOQC project. The main focus is put on the study of secure key agreement over a trusted repeater QKD network, when some nodes are corrupted. We propose an original method, able to ensure the authenticity and privacy of the generated secret keys.
@article{arxiv.0904.4072,
title = {Security of Trusted Repeater Quantum Key Distribution Networks},
author = {Louis Salvail and Momtchil Peev and Eleni Diamanti and Romain Alleaume and Norbert Lutkenhaus and Thomas Laenger},
journal= {arXiv preprint arXiv:0904.4072},
year = {2009}
}
Comments
29 pages, 3 figures accepted for publication in Journal of Computer Security