There has been a rapid growth in the number of vehicles on road, and this makes it vital to establish communication between the vehicles for safe transportation. This has given rise to importance of new industries as a part of automotive engineering such as cloud computing, IoT, network security and communications. The collaboration of these fields is what is today known as IoV (Internet of vehicles). Although a security mechanism exists across domains of Internet of things, the existing methods fail for Internet of vehicles due to their collaboration of ad hoc and intelligence systems. Through this paper we would like to propose a security model to establish secured communication between the individual vehicles and the infrastructure. In this model, we propose a mechanism to establish authentic communication between the RSUs (roadside units) and vehicles in turn storing the secret key in cloud and securing it by continuously updating. © Springer Nature Singapore Pte Ltd. 2019.