An Efficient and Secure Authentication Approach in VANET using Location and Signature-Based Services

Nowadays, the intelligent Transportation System (ITS) has improved the safety of drivers and shared traffic information efficiently. However, privacy and security are the major concerns in vehicular ad hoc networks (VANET). Sharing of information without compromising the trusted third party (TTP) is the core concern in ITS. The location-based services (LBS) have significantly gained more benefits in tracking vehicle navigation. Authentication guarantees the effectiveness and unforgeability of LBS information. However, the location privacy of vehicle users may get affected due to the tracking of physical location. Hence, to deploy the LBS successfully, it is required to ensure the authentication mechanism in the vehicular network. Therefore, an efficient Location and Signaturebased authentication (LS-based authentication) method is developed to ensure the security and safety of the vehicle's location. Here, each vehicle in the network is authenticated based on the message and the current location information. Accordingly, the encryption and the decryption functions are employed to successfully encrypt and decrypt the LBS services. The encrypted messages are safely broadcasted to the neighbouring vehicles or RSU's based on the timestamp factor. The proposed method achieved a higher detection rate, minimum computational time, and lower memory usage of 0.815, 12.913s, and 0.104MB for 100 kb data size.