A Distributed Resource Management for VANET using Smart Contract

Recently, the Vehicular Ad-hoc network (VANET) has progressively gained attention from both industry and research with the rapid development of wireless communication technology and intelligent vehicles. The vehicles exchange messages with other entities but cannot share the resources between them. Therefore, security is required in some scenarios including integrity, traceability, confidentiality, notarization of exchanged information as well as access control. In order to provide a secure vehicle communication and access control, we propose an ABAC access control model using smart contract on the blockchain. The use of the blockchain facilitates the sharing of secure messages among vehicles. Moreover, vehicles are able to share the resources with each other exploiting the access control policy on the XACML standard. Then, we evaluate the access response time and the storage overhead of the proposal.