Abstract
We propose in this paper a security protocol based on a dynamic change of pseudonyms for privacy in Vehicular Ad hoc NETworks (VANET). Our proposal ensures privacy for the driver and his vehicle whether he is transmitter or receiver of the message. By handling all possible cases of changes in vehicle behavior during traffic, we ensure a safe and secure traffic management. We built the architecture of our solution on three essential devices designed for VANET. In three steps, the anonymity is guaranteed by our Real Initial New protocol (RIN). This latest provides a high security to vehicles.