A Secure and Efficient Vehicle-to-Vehicle Communication Scheme using Bloom Filter in VANETs

VANETs (Vehicular Ad-hoc Networks) are a next-generation networking technology that provides communication between vehicles or between a vehicle and an RSU (Road Side Unit) using wireless communication. A vehicle accident is likely to cause a serious disaster. Therefore, the VANET system provides an essential information exchange protocol for communication between vehicles. However, a key exchange scheme based on the proposed general network for a high-speed communication environment is not suitable for vehicles. In this paper, the first communication from the RSU passes only group keys. Then it updates the key value in the communication with the vehicle using Bloom filters to verify the proposed method. In the proposed scheme in VANET, dispersed operations are carried out in the RSU. By reducing to a minimum the number of keys exchanged, more secure group communication can be realized. In this paper, we proposed a message batch verification scheme using Bloom Filter that can verify multiple messages and handover authentication efficiently even for multiple communications with many vehicles.