원문정보
초록
영어
In a vehicular ad-hoc networks (VANETs), the veracity of a message requires authentication of the source vehicle. In this work, a technique for mutual authentication of a vehicle and road side unit (RSU) that preserves the privacy of the vehicle is proposed. The technique relies on the traffic authorities and assumes a hierarchical structure comprising a central trusted authority (TA) with state level trusted authorities (STA) and city level trusted authorities (CTA). Vehicles and RSU have public - private key pairs and each vehicle - CTA and RSU – CTA share a symmetric key. An RSU can be malicious and a vehicle can be malicious and a vehicle can communicate with a CTA only via an RSU and vice-versa. This requires message exchange in the RSU mediated communication between vehicles and CTAs to be confidential. The process is bandwidth efficient and needs only one request-reply message pair between vehicle and the (RSU- CTA-STA-TA) infrastructure. The time taken is in the order of milliseconds which constitutes only a small portion of the stay time of a vehicle within an RSU region.
목차
1. Introduction
2. Related work
3. Problem Definition
4. VANET Architecture
5. Protocol Description
6. Simulation and Results
6.1. Simulation Setup
6.2. Results
7. Conclusion
References