Authenticated Timing Protocol Based on Galileo ACAS

Authenticated Timing Protocol Based on Galileo ACAS

Blog Article

Global navigation satellite systems (GNSSs) provide accurate positioning and timing services in a large gamut of sectors, including financial institutions, Industry 4.0, and Internet of things (IoT).Any industrial system involving multiple devices interacting and/or coordinating their functionalities needs accurate, dependable, and trustworthy time synchronization, which can be obtained by using authenticated GNSS signals.However, GNSS vulnerabilities to time-spoofing attacks may cause security issues for their applications.

Galileo is currently developing new Full Bed w/Storage services aimed at providing increased security and robustness against attacks, such as the open service navigation message authentication (OS-NMA) and commercial authentication service (CAS).In this paper, we propose a robust and secure timing protocol that is independent of external time sources, and solely relies on assisted commercial authentication service (ACAS) Oils and OS-NMA features.We analyze the performance of the proposed timing protocol and discuss its security level in relation to malicious attacks.Lastly, experimental tests were conducted to validate the proposed protocol.