A secure multi-hops routing for VANETs

Vehicular ad-hoc networks (VANETs) are a promising communication technology. they offers many applications, which will improve traffic management and safety. Nevertheless, those applications have stringent security requirements, as they affect road traffic safety. Security requirement like authentication, privacy and Integrity are crucial to VANETs, as they avoid attacks against vehicle-to-vehicle and vehicle-to-roadside communication. In this paper, we investigate the authentication and privacy issues in VANETs. We explore the Attribute Based Signature (ABS) primitive and its variants. We then select among existing ABS literature, an efficient scheme (the best known) that achieve both traceability and user-privacy (anonymity). Finally, we propose a protocol for VANETs that uses traceable ABS in general context of multi-hop routing.