Abstract
The security and privacy issues in vehicular ad hoc networks (VANETs) are often addressed with schemes based on either public key infrastructure, group signature, or identity. However, none of these schemes appropriately address the efficient verification of multiple VANET messages in high-density traffic areas. Attackers could obtain sensitive information kept in a tamper-proof device (TPD) by using a side-channel attack. In this paper, we propose an identity-based conditional privacy-preserving authentication scheme that supports a batch verification process for the simultaneous verification of multiple messages by each node. Furthermore, to thwart side-channel attacks, vehicle information in the TPD is periodically and frequently updated. Finally, since the proposed scheme does not utilize the bilinear pairing operation or the Map-To-Point hash function, its performance outperforms other schemes, making it viable for large-scale VANETs deployment.
Highlights
In recent years, wireless communication technology’s rapid advancement has made vehicular ad hoc networks (VANETs) gain considerable attention from researchers in the public and private sectors, especially those involved in intelligent transportation systems [1,2,3]
A VANET architecture comprises three main entities: a trusted authority (TA), several fixed roadside units (RSUs), and many mobile onboard units (OBUs), which are equipped in every VANET-enabled vehicle
We propose an efficient identity-based conditional privacy-preserving authentication scheme to address some of the security issues of VANET, especially those related to the existing authentication schemes to secure the V2V and V2I communications for managing all OBUs and RSUs in the VANETs system
Summary
Wireless communication technology’s rapid advancement has made vehicular ad hoc networks (VANETs) gain considerable attention from researchers in the public and private sectors, especially those involved in intelligent transportation systems [1,2,3]. Since the driver is usually the vehicle’s owner, the lack of security on the VANETs communication could expose the driver’s identity. An eavesdropper can infer a driver’s residence and identity by gathering safety-related messages in VANET networks. This information leak may violate the user’s privacy and may lead to criminal acts. The entities in the VANET networks have to communicate anonymously to prevent disclosure of the user identity via the message exchanges. The existing authentication schemes that are based on conditional privacy-preservation are generally categorized into three main classes: PKI-based, group signature-based, and identity-based schemes. An identity-based conditional privacy-preserving authentication scheme for VANETs that satisfies the design goal in terms of the security and privacy requirements.
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