Abstract
Recent advance in wireless communication technologies have revolutionized human’s lifestyles by providing the best ever convenient and flexible Internet services access. With the plummeting costs of electronic components and the ever willingness of the manufacturers to increase road safety and to differentiate themselves from their competitors, vehicles are becoming “computers on wheels”. Lately, both the vehicular manufacturers and the telecommunications industries have geared up to equip each vehicle with the best technology that allows the drivers and passengers from different vehicles to communicate with each other in order to improve the driving experience. However, the integration of on board computers and positioning devices raise formidable research challenges. One of these challenges is security and so far very little attention has been dedicated to the security of vehicular networks. Yet, security is crucial and it must be considered along with the issue of privacy in VANETs. In addition, conditional privacy preservation must also be achieved in that the personal information of drivers and passengers should be protected. Hence, we take a step further to include backward unlinkability into Lin et al.’s GSIS scheme.