ECDSA for Data Origin Authentication and Vehicle Security in VANET

Vehicular ad-hoc network is a part of mobile ad-hoc networks where data communication happens among the vehicles over a wireless network. It came into limelight for the sole purpose of making the driving experience a little more secure and providing a trustable network to facilitate proper management of traffic. But it is subject to various security risks due to its dynamic topology and randomly moving nodes. The message transfer between the vehicles is of utmost importance, so robust solutions must be addressed into concern for removal of the security and privacy issues of the vehicles. In this paper, elliptic curve digital signature algorithm has been proposed for checking the authenticity of the message and strengthening the privacy of the vehicle against the malicious Sybil attack.