Abstract
Vehicles authentication, the integrity of messages exchanged, and privacy-preserving are essential features in vehicular ad hoc network (VANETs) security. Most of the previously proposed VANETs security solutions do not sufficiently satisfy the security and efficiency requirements. Besides, most of those solutions are heavily dependent on the system key and long-term sensitive data stored in an ideal tamper-proof device, which may not be practical or ideal for resource-constrained onboard units (OBUs), especially in the case of an unexpected cloning or physical attack. Therefore, a robust authentication solution should consider those security issues and the nature of resource-constrained nodes. To satisfy all these requirements, we propose a lightweight multi-factor authentication and privacy-preserving security solution for VANETs. It employs a combination of physically unclonable functions (PUF) and one-time dynamic pseudo-identities as authentication factors. Furthermore, it eliminates the heavy dependency on the system key by decentralising the wide precinct of the certificate authority (CA) into regional domains and achieves robust control of domains keys. A detailed analysis demonstrates that our scheme efficiently meets the VANETs security requirements, and offers more suitable communication and computation costs and features than existing schemes.
Highlights
With the growing population of vehicles in urban cities and the development of the technology, especially in the field of smart cities and the internet of things, smart transportation systems have attracted wide attention from academic and industrial researchers to offer a safer driving experience that can help to avoid traffic congestion and accidents.The vehicular ad hoc network (VANET) is a promising smart transportation solution, which is a particular class of the mobile ad hoc network (MANET) [1]
We propose a new robust pseudo-identity multi-factor VANET scheme based on physically unclonable functions (PUF) and dynamic keys
MFSPV SCHEME we present the MFSPV scheme, which mainly consists of five phases: vehicle setup, vehicleto-infrastructure (V 2I ) mutual authentication, beacons exchange, vehicle revocation, and regional key update phases
Summary
With the growing population of vehicles in urban cities and the development of the technology, especially in the field of smart cities and the internet of things, smart transportation systems have attracted wide attention from academic and industrial researchers to offer a safer driving experience that can help to avoid traffic congestion and accidents. The traditional secretkey-based or conventional password or biometric-based authentication systems, wherein a shared secret is the only authentication factor or long-term store for a sensitive data in an ideal TPD, are not sufficient to address the security problems In this context, we need a multi-factor authentication scheme with a more practical and realistic TPD that can offer a layered defence and, in addition to that, make unauthorised parties unable to gain control of or compromise the vehicle’s. The designed scheme eliminates the necessity for a TPD to store long-term sensitive data (like a fingerprint, password), which increases system security and efficiency It does not depend heavily on the system key, in addition to which, with the help of the utilised PUF and dynamic secret data, even if the TPD is physically compromised, our proposed scheme can withstand any such attempts and will not be defeated.
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