GAKAV: Group Authentication and Key Agreement for LTE/LTE-A Vehicular Networks

Vehicular ad hoc networks play an important role in current intelligent transportation networks which have gained much attention from academia and industry. The vehicular networks can be implemented by the LTE/LTE-A networks, which have been formally defined in a series of standards by the third generation partnership projects (3GPP). There are lots of challenges in the authentication processes in the LTE/LTE-A. In this paper, aimed to improve the security functionality of the vehicular networks, a new secure and efficient group authentication and key agreement scheme for the vehicular networks has been proposed, named as the GAKAV. Compared with the existing schemes, the proposed scheme can greatly reduce the amount of control message transmission from mass of vehicular equipment (VEs) to the network and avoid much overhead in the LTE/LTE-A networks. Besides, it has the following security functions including privacy preservation, non-frameability and non-repudiation verification.