Resumen
In Vehicular Ad Hoc Networks (VANET), vehicles communicate with another vehicle and also communicate with infrastructure (RSU) points by broadcasting safety and non-safety messages in the network by using the DSRC. In wireless communication, security and privacy are very important issues to avoid threat in the network. Cluster based vehicle to vehicle (V2V) communication scheme is proposed here which prevents vehicle from threat. To achieve security and privacy goals, we propose one time authentication for group and then V2V communication is done using group symmetric key within group. Our scheme satisfies all security and privacy requirements such as authentication, non-repudiation and con- ditional traceability. In case of malicious activity, this scheme can trace malicious vehicle which generates a false message. Computation and communication cost is improved as compared and analyzed with other previous schemes.