Secure optical networks based on quantum key distribution and weakly trusted repeaters

Elkouss Coronas, David and Martinez Mateo, Jesus and Ciurana Aguilar, Alex and Martín Ayuso, Vicente (2013). Secure optical networks based on quantum key distribution and weakly trusted repeaters. "Journal of Optical Communications and Networking", v. 5 (n. 4); pp. 316-328. ISSN 1943-0620. https://doi.org/10.1364/JOCN.5.000316.

Description

Title: Secure optical networks based on quantum key distribution and weakly trusted repeaters
Author/s:
  • Elkouss Coronas, David
  • Martinez Mateo, Jesus
  • Ciurana Aguilar, Alex
  • Martín Ayuso, Vicente
Item Type: Article
Título de Revista/Publicación: Journal of Optical Communications and Networking
Date: 2013
ISSN: 1943-0620
Volume: 5
Subjects:
Freetext Keywords: Terms—Network coding - Passive optical networks - Quantum key distribution - Trusted repeaters.
Faculty: Facultad de Informática (UPM)
Department: Lenguajes y Sistemas Informáticos e Ingeniería del Software
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Abstract—In this paper we explore how recent technologies can improve the security of optical networks. In particular, we study how to use quantum key distribution(QKD) in common optical network infrastructures and propose a method to overcome its distance limitations. QKD is the first technology offering information theoretic secretkey distribution that relies only on the fundamental principles of quantum physics. Point-to-point QKDdevices have reached a mature industrial state; however, these devices are severely limited in distance, since signals at the quantum level (e.g., single photons) are highly affected by the losses in the communication channel and intermediate devices. To overcome this limitation, intermediate nodes (i.e., repeaters) are used. Both quantum-regime and trusted, classical repeaters have been proposed in the QKD literature, but only the latter can be implemented in practice. As a novelty, we propose here a new QKD network model based on the use of not fully trusted intermediate nodes, referred to as weakly trusted repeaters. This approach forces the attacker to simultaneously break several paths to get access to the exchanged key, thus improving significantly the security of the network. We formalize the model using network codes and provide real scenarios that allow users to exchange secure keys over metropolitan optical networks using only passive components. Moreover, the theoretical framework allows one to extend these scenarios not only to accommodate more complex trust constraints, but also to consider robustness and resiliency constraints on the network.

More information

Item ID: 26658
DC Identifier: http://oa.upm.es/26658/
OAI Identifier: oai:oa.upm.es:26658
DOI: 10.1364/JOCN.5.000316
Official URL: http://www.opticsinfobase.org/jocn/journal/jocn/about.cfm
Deposited by: Memoria Investigacion
Deposited on: 18 Jun 2014 10:28
Last Modified: 30 Nov 2017 09:44
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