Privacy Preserving Dynamic Pseudonym-Based Multiple Mix-Zones Authentication Protocol over Road Networks

摘要

In this paper, we propose an efficient dynamic pseudonymous based multiple mix-zones authentication protocol for privacy preservation to enhance security over road networks. Most of the existing protocols either utilize pseudonym based approaches with certificate revocation list that cause significant communicational and storage overhead or they use group signature based approaches, which are computationally expensive. In this paper, we present a dynamic pseudonymous based multiple mix-zones authentication protocol that only requires mobile vehicles to communicate with reported server for registration and dynamic pseudonym change. Furthermore, we formulate a mechanism to provide users with dynamic pseudonyms named as; base pseudonyms and short time pseudonyms, to achieve users' privacy. Finally, we analyze our protocol by determining the communication cost as well as various attack scenarios to prove that our approach is most efficient and robust as compared to existing techniques.