Secure and efficient key delivery in VANET using cloud and fog computing

The article proposes the design of the framework for vehicular ad hoc networks (VANET) for delivery of the authentication keys with minimum delay amongst vehicles having high mobility using fog and cloud computing. We propose to introduce fog computing to extend cloud computing by introducing an intermediate fog layer between mobile devices and cloud thus producing a number of advantages. Since the keys are provided directly from an intermediate layer, the latency is considerably reduced. In addition, the number of messages exchanged between vehicle and other elements of the VANET reduces in comparison to the existing approaches. Consequently, the resultant system is highly efficient. The design is implemented and validated using Omnetpp for single and multi vehicle system.