V2X security: A case study of anonymous authentication

Vehicle to Everything (V2X) is the enabling technique for future connected cars. Security is essential to the V2X technology, and privacy is an integral element of V2X security. It has been recognized that privacy preserving/anonymous authentication is a fundamental step towards achieving privacy protection in V2X. We are thus motivated to study anonymous authentication, as a case study of V2X security. Specifically we propose two lightweight anonymous credential schemes for anonymous authentication in V2X: one is under the rationale of “witness update outsourcing”, and is applicable to V2V; the other is suitable for V2I, with the characteristic that a vehicular OBU is enabled to operate entirely on the compact bilinear group. We conduct performance analysis both analytically and empirically, and get promising results.