SeGCom: Secure Group Communication in VANETs

In this paper, we propose a novel scheme to achieve secure, and efficient vehicular communication. In particular, SegCom provides two mechanisms to perform successive authentication of the vehicle with the road-side infrastructure units to expedite authentication for Vehicle-to-Infrastructure (V2I) communication. Furthermore, to enhance the efficiency of Vehicle-to-Vehicle (V2V) communication, SeGCom permits the vehicles to form group, which are also used for performing multi-hop V2V communication without any assistance from a trusted authority. Comparison with other existing schemes in the literature has been performed to show the efficiency and applicability of our scheme.