VANET is subpart of MANET and the significance and popularity of VANET are increasing now a day because of their great contribution to improving traffic efficiency and safety. However, communication between two or more vehicles or with RSUs needs to be secured as well as authenticated. We have focused on to reduce the authentication time, that's why we used the proxy vehicle which is verified by both RSU and CA; proxy vehicle will do half of the authentication process and reduce the

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... on time. The simulation results show that proposed approach minimizes the authentication time, delay, packet loss due to the collision of the packet in the network and also increase the overall throughput of the network. In this paper, we also discussed the Elliptic Curve Cryptography algorithm (ECC) approach which uses the vehicle ID, a randomly generated prime number and time stamp to encrypt the message in a secure manner. As a result the whole VANET network will be secured and faster in handling the congestion during peak hours.