A Lightweight Authentication and Key Management for Intelligent Transport Systems
Creators: name: HATHAL, WALEED SULTAN
Publisher: name: University of Surrey
Year: 2024

description: "Intelligent Transport Systems (ITS) aims to reduce fatalities caused by road accidents
description: and improve traffic efficiency. Reducing accidents is a critical element that has contributed
description: to drawing research attention to vehicular communication systems (VCS), in
description: which vehicles can form a dynamic self-configuring network enabling them to communicate
description: with other vehicles and road infrastructure. Since road users make their actions
description: according to the information provided in the exchanged safety massages, received messages
description: should be reliable. Since the wireless communication channel is vulnerable to
description: attacks, an authentication scheme should be designed to meet the requirements of
description: such networks before any deployment. Due to the large scale of the mobile nodes and
description: high volume of exchanged messages in VCS and before designing a security framework
description: employing lightweight cryptographic operations is necessary to maintain low computation
description: and communication overheads. Therefore, lightweight authentication and key
description: management schemes are proposed in this thesis. In this thesis, there are three main
description: contributions.
description: A Lightweight Authentication Scheme for VCS Based on Timed Efficient Stream Loss-
description: Tolerant Authentication (TESLA) and Bloom Filters (BF) is proposed for vehicle-to-vehicle
description: and vehicle-to-infrastructure communications. The proposed scheme is based on
description: TESLA to achieve lightweight source authentication. Also, Bloom Filter (BF) is utilised
description: to authenticate TESLA keys instead of digital signatures. Therefore, the proposed work
description: focuses on reducing the usage of digital signatures to achieve higher success rate and
description: less overheads.
description: The use of digital certificates for authentication in VCS fulfil all the security requirements
description: but it can have a high impact on the communication and computation overheads.
description: Thus, a certificateless authentication framework for Vehicular Networks was proposed.
description: This is an enhancement of the first contribution by allowing RSUs authenticate vehicles
description: without the need for a digital certificate. However, a digitally signed authentication token
description: is used instead of digital signatures, to reduce the communication and computation
description: overheads while fulfilling the security requirements.
description: An enhanced Certificateless and Lightweight Authentication Scheme for Vehicular Communications
description: Systems is proposed. This work is an extension of the second contribution.
description: Since the performance of TESLA was shown to be suitable for VCS in the first contribution,
description: it is utilised in this contribution as well. Therefore, in this work employs the
description: lightweight authentication token with the lightweight broadcast authentication scheme
description: to achieve the maximum efficiency for VCS. Conventional TESLA does not support instant
description: authentication, which is undesired for safety-oriented applications. Future movements
description: of a vehicle is used to enhance the verification of messages, where each vehicle
description: constructs a table of the future movement prediction before a message is sent. Security
description: analysis has been carried out and extensive simulation of our scheme. The results show
description: that it can withstand a variety of attacks and has a better performance in terms of
description: verification delay, scalability, and communication overhead than existing schemes, and
description: therefore, the scheme is well suited for VCS"