Investigate key management and authentication models in VANETs

Vehicular ad hoc networks (VANETs) are being designed to convenience traffic, keep safety and provide services to drivers. To meet this goal, the vehicles involved should be trustworthy which eagerly needs valid V2V, V2I, I2V authentication. As to the authentication models used in VANETs, many organizations and research centers have done lots of work. The latest authentication models used in VANETs can be divided into several categories based on the cryptographic schemes and algorithms. While the representative models have their own pros and cons which also have fixed suitable scenes, we make conclusions about the latest research results. Furthermore, the future development and difficult points are analyzed at last.