Cross-Layer Authentication based on Physical-Layer Signatures for Secure Vehicular Communication

Abstract

In recent years, research has focused on exploiting the inherent physical (PHY) characteristics of wireless channels to discriminate between different spatially separated network terminals, mitigating the significant costs of signature-based techniques. In this paper, the legitimacy of the corresponding terminal is firstly verified at the protocol stack's upper layers, and then the re-authentication process is performed at the PHYlayer. In the latter, a unique PHY-layer signature is created for each transmission based on the spatially and temporally correlated channel attributes. Extensive simulation has shown the capability of the proposed scheme to support high detection probability at small signal-to-noise ratios. In addition, security evaluation is conducted against passive and active attacks. Moreover, computation and communication comparisons are performed to demonstrate that the proposed scheme provides superior performance compared to conventional cryptographic approaches.

Adaptive chaotic map-based key extraction for efficient cross-layer authentication in VANETs

“…This facilitates legitimacy detection, as well as the exchange of authenticated Chebyshev probing sequences used to extract the symmetric shared key k. This key allows for re-authenticating the received messages sent from the same transmitter for the OFDM system of N subcarriers. This study extends our research introduced in [39]. In a two-step process, the identity of the corresponding terminal is re-authenticated using a PHY-layer signature-based identity authentication mechanism (PHY-SIAM), while the integrity of the attached data packet is verified using a PHY-layer feature tracking mechanism (PHY-FTM).…”

RIS-Enabled Secret Key Generation for Secured Vehicular Communication in the Presence of Denial-of-Service Attacks

“…The RIS has been employed in various applications, such as satellite communications [12], physical-layer security [13], and internet-of-things (IoT) networks [14], demonstrating its versatility and the potential for diverse use cases. RISs comprise many passive reflecting units that can be placed at adaptable locations and independently alter the incident signal, therefore improving signal transmission [15]. In recent years, some researchers have applied RISs to the physical-layer security of wireless communications to improve the secrecy data rate under the wiretap channel, a concept referred to as keyless information theory security [16].…”

Research on Non-line-of-sight Collision Avoidance Warning Using the Vehicle-to-vehicle Communication System in 5G Mobile Communication Network

“…A large amount of sensing data can be integrated through the invehicle system and then sent through the 4G/5G wireless communication network. (1)(2)(3)(4)(5) Vehicleto-everything (V2X) is a communication technology between vehicles with different objects that may affect vehicular travel or may be affected by other traveling vehicles. V2X is a vehicular communication system that incorporates other more specific types of communication, such as vehicle-to-vehicle (V2V), vehicle-to-device (V2D), vehicle-to-network (V2N), vehicle-toinfrastructure (V2I), and vehicle-to-pedestrian (V2P).…”

“…V2X is a vehicular communication system that incorporates other more specific types of communication, such as vehicle-to-vehicle (V2V), vehicle-to-device (V2D), vehicle-to-network (V2N), vehicle-toinfrastructure (V2I), and vehicle-to-pedestrian (V2P). (1)(2)(3)(4)(5) The sensors used in the V2X technologies need to have the capabilities of sensing objects around corners and beyond any obstructions in a radius of up to several hundred meters. The main functions of V2X communication are to address the two main problems for vehicles traveling on roads: safety and mobility.…”