Privacy Preserving Secure Communication Protocol for Vehicular Ad Hoc Networks

Vehicular Ad-hoc Networks (VANETs) have attracted much attention recently because of its applications and features. The main purpose of adopting VANET technology is to increase safety and efficiency on roads. In this paper, a privacy preserving secure communication protocol (PPSCP) for VANETs is proposed. PPSCP authenticates safety messages anonymously to preserve vehicle privacy and prevent unauthorized tracking, balances between privacy and identification, and makes a new efficient vehicle revocation scheme that reduces revocation lists size. The protocol is resistant to attacks like replay attack and Denial of Service (DoS) attack. A security performance analysis to compare between PPSCP and S3P was performed through simulation which demonstrates that PPSCP is more robust, efficient, secure and provides more privacy preservation and liability.