Study on the implementation of protocols for providing security in average VANET intervehiculary network communication systems

The VANET type networks (Vehicular Ad-Hoc Networks) are a particular case of ad-hoc wireless networks. These networks are formed by equipping vehicles with short-range wireless communication devices. The development of VANET network applications and protocols brings some unique security issues dictated by the devices in use, vehicles´ sporadic connectivity, the high degree of relevance given by their geographical location discovery. The paper presents a security protocol used in VANET networks (Vehicular Ad-Hoc Networks). The motivation behind this work is based on the current void of adequate mechanisms to ensure standardized property security in vehicular ad-hoc environments of today. Now, there is a serious lack of mechanisms for possible attack detection and also a lack of means to neutralize them. The solutions developed so far do not cover all security aspects, not being yet standardized and accepted among the scientific community. The security solution exposed in this paper is based on the vehicle´s position when sending messages, the time when emission occurs, and existence of certification authorities in the area at the starting moment of information transmittal, which guarantees a secure message transmission in the VANET environment.