A Survey of VANET Security Models and its Issues on Node Level Data Transmission

Vehicular Ad hoc Network (VANET) plays a vital role in communication between moving vehicles on a network enabled and regulated by wireless network protocols. However, as the size of the network increases, the vulnerability of the node attacks and data attacks also increases exponentially. Most of the conventional models are depend on the network size, its topology structure and data size. In this paper, a study of different VANET security models and its issues are studied based on the network parameters and security metrics. Different types of VANET security models, network attacks and encryption models are discussed in this paper. Finally, the limitations of the conventional VANET security models are discussed on large VANETs.