Date Added: Jan 2013
Vehicular Ad-hoc NETworks (VANET) are becoming more popular as the need for accessing and sharing data while on the move is increasing. Value-added applications such as online payment services, geographical location identification, etc. in VANET, improve driving safety, passenger comfort, offer great business opportunities, and attract more and more attention in the authors' daily life. VANETs connect vehicles into a huge mobile ad-hoc network to share information on a larger scale. By enabling the vehicles to communicate with their neighbors and sharing their driving states, VANETs avoid accidents potentially caused by emergency braking, lane changing, etc. The characteristics of VANET pose both challenges and opportunities in achieving security goals.