Non-interactive Authentication Scheme Providing Privacy among Drivers in Vehicle-to-Vehicle Networks

In this paper, we present a non-interactive authentication scheme providing privacy among drivers in vehicle-to-vehicle (V2V) communication networks. Where the drivers, who are members of V2V networks, are organized into groups. Each group has a shared public key between members. Additionally, each member has a private key provided by the Third Trusted Party (TTP). In our proposed scheme, we ensure driver´s privacy by allowing members to change their own set of public keys frequently using the Digital Signature Algorithm (DSA). The TTP sends to each member a token of his original set of public keys. This member can find non-interactively a new token corresponding to the new set of public keys, and hence vehicles can exchange the safety critical information without requiring a control from the TTP. In case of a malicious behavior, the identity of the signer can be revealed only by the TTP.