A secure message authentication scheme for VANET using ECDSA

Mobile Ad Hoc Networks (MANETs) have several features, such as dynamic topologies, limited bandwidth usage, limited energy, etc... Vehicular ad hoc networks (VANETs) are a special case of mobile ad hoc networks. VANET communication can be formed between vehicles with vehicle to vehicle (V2V) communication or between Vehicle-to-Road Side Units (V2R). VANETs provides a promising network scenario for facilitating safety on roads, managing traffic, and infotainment dissemination for both passengers and drivers. The communication between V2V and V2R is the most critical part, so a proper security and privacy methods have to be maintained. Messages are critical and important like a warning message, so that the message must be authenticated which guarantee´s the message integrity. Elliptic Curve Digital Signature Algorithm (ECDSA) provides an efficient message authentication scheme. A combination of P2P, VANET and ECDSA can make the scenario more efficient and perform better in terms of time delay in message delivery.