Efficient and secure message transfer in VANET

Wireless medium shows a key role from past few years in the world of communication. Mobile Adhoc Network (MANET) is an important field of wireless communication. Vehicular Adhoc Network (VANET) is a new area of MANET in which a car acts as node communicator with rest of the cars and road side infrastructure in the network. Security is a major issue in VANET as it provide safety as well as non safety application to the users. Varied works have already been done by researchers for the security in VANET but securing the message communication between cars still poses an issue. From this paper, we introduce a model which provides a secure communication between cars. In our model, RSUs acts as a Certificate Authority(CA) which will generate the key using Elliptic Curve Cryptography(ECC) for the cars and after that communication between cars takes place using Elliptic Curve Diffie Hellman (ECDH).