Hybrid Trusted/Untrusted Relay Based Quantum Key Distribution over Optical Backbone Networks
Artikel i vetenskaplig tidskrift, 2021

Quantum key distribution (QKD) has demonstrated a great potential to provide future-proofed security, especially for 5G and beyond communications. As the critical infrastructure for 5G and beyond communications, optical networks can offer a cost-effective solution to QKD deployment utilizing the existing fiber resources. In particular, measurement-device-independent QKD shows its ability to extend the secure distance with the aid of an untrusted relay. Compared to the trusted relay, the untrusted relay has obviously better security, since it does not rely on any assumption on measurement and even allows to be accessed by an eavesdropper. However, it cannot extend QKD to an arbitrary distance like the trusted relay, such that it is expected to be combined with the trusted relay for large-scale QKD deployment. In this work, we study the hybrid trusted/untrusted relay based QKD deployment over optical backbone networks and focus on cost optimization during the deployment phase. A new network architecture of hybrid trusted/untrusted relay based QKD over optical backbone networks is described, where the node structures of the trusted relay and untrusted relay are elaborated. The corresponding network, cost, and security models are formulated. To optimize the deployment cost, an integer linear programming model and a heuristic algorithm are designed. Numerical simulations verify that the cost-optimized design can significantly outperform the benchmark algorithm in terms of deployment cost and security level. Up to 25% cost saving can be achieved by deploying QKD with the hybrid trusted/untrusted relay scheme while keeping much higher security level relative to the conventional point-to-point QKD protocols that are only with the trusted relays.

Relays

Resource management

optical networks

cost optimization

Security

security

Optical fiber networks

Optical sensors

Heuristic algorithms

Measurement-device-independent quantum key distribution

5G mobile communication

Författare

Yuan Cao

Beijing University of Posts and Telecommunications (BUPT)

Yongli Zhao

Beijing University of Posts and Telecommunications (BUPT)

Jun Li

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Rui Lin

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Jie Zhang

Beijing University of Posts and Telecommunications (BUPT)

Jiajia Chen

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

IEEE Journal on Selected Areas in Communications

0733-8716 (ISSN)

Vol. 39 9 2701-2718 9373434

Ämneskategorier

Datorteknik

Telekommunikation

Kommunikationssystem

DOI

10.1109/JSAC.2021.3064662

Mer information

Senast uppdaterat

2021-09-22