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

Elkouss Coronas, David; Martinez Mateo, Jesus; Ciurana Aguilar, Alex y 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.

Descripción

Título: Secure optical networks based on quantum key distribution and weakly trusted repeaters
Autor/es:
  • Elkouss Coronas, David
  • Martinez Mateo, Jesus
  • Ciurana Aguilar, Alex
  • Martín Ayuso, Vicente
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Optical Communications and Networking
Fecha: 2013
Volumen: 5
Materias:
Palabras Clave Informales: Terms—Network coding - Passive optical networks - Quantum key distribution - Trusted repeaters.
Escuela: Facultad de Informática (UPM) [antigua denominación]
Departamento: Lenguajes y Sistemas Informáticos e Ingeniería del Software
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 26658
Identificador DC: http://oa.upm.es/26658/
Identificador OAI: oai:oa.upm.es:26658
Identificador DOI: 10.1364/JOCN.5.000316
URL Oficial: http://www.opticsinfobase.org/jocn/journal/jocn/about.cfm
Depositado por: Memoria Investigacion
Depositado el: 18 Jun 2014 10:28
Ultima Modificación: 30 Nov 2017 09:44
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