SST: A secure fault-tolerant Smart Transportation system for Vehicular Ad hoc Network

Vehicular Ad Hoc Network (VANET) is an emerging area of research nowadays for its high mobility and frequent topology change. Inter-vehicular communication is essential in the real time environment for full road safety. But due to highly challenging properties it is hard to get an optimal solution for data communication between the vehicles (V2V) or vehicle to infrastructure (V2I/I2V). Security is a core issue in VANET because it is strongly affected by attacks. This degrades network performance and leads to insecurity in data communication. In this paper, we have designed a Secure Smart Transportation (SST) System which reduces the level of accidents by making an accident free environment. The main aim of our paper is to securely transmit the warning message (WMSG) from source (S) to destination (D). Firstly, the vehicles are checked by a Fault Detection System (FDS). Secondly, the vehicles are recognized by the Central Authority (CA). Thirdly, session key establishment is done between the vehicles for communication. Then the path is decided by using optimal node generation algorithm. At last the data is send by encrypting it with the session key and then decrypting it with the same session key. This process continues until D is reached. It is difficult for an imposter to enter into the network and alter the communication. We have proved some properties related to our SST system.