Comprehensive Classification and Analysis of Cyber Attack Surface on Quantum Key Distribution Networks

Abstract

Quantum key distribution (QKD) is a technology used to securely generate and distribute symmetric cryptographic keys. QKD networks are complex and require a layered approach in order to systematically describe hardware and software elements of the network and traffic flow between them. To analyze the security of QKD networks, all layers need to be taken into consideration. This paper aims to provide an overview and classify known security threats and attacks on QKD networks according to the layers of QKD network architecture, in order to detect which layers of the network need additional research efforts.