The design and analysis of distributed authentication scheme in VANET

Vehicular ad hoc networks (VANETs) have many new characteristics unlike traditional network, such as centriclessness, mobility and multi-hop transmission, which invalidate conventional key managements. The fast development and successful application of trusted computing technology provide a potential solution to achieve effective authentication and trust evaluation. According to the VANETs with hierarchy organization structure like tank group, a new authentication and trust evaluation framework is proposed based on trusted computing technology, the concepts of "trusted attribute" and "trusted grade" are introduced, and the key management architecture as well as authentication process of mobile node are explained in detail. Moreover, the real applications of the presented framework in tank fight are discussed, and the trust evaluation methods and its argumentations in the presented framework are given.