An Attribute-Based Access Control Mechanism for Blockchain-Enabled Internet of Vehicles

Abstract

Rapid development of wireless technology and Internet of things (IoT) has indirectly promoted the development of Internet of vehicles (IoV). The data collected by the sensors equipped on the vehicles become richer and more detailed. However, most data are sensitive and private which is relevant to the privacy of the driver and the core information of the system. To protect the data from unauthorized access, fine-grained access control must be enforced. Due to the centralized and complicated access management, traditional access control mechanisms are unfit for IoV systems. In this paper, we propose an attribute-based access control scheme for blockchain-enabled IoV systems. A new type of transaction has been designed to represent the authorization of attributes. The proposed scheme could simplify the access management, and effectively prevent the systems from single point of failure and data tampering. We also improve the access control part to decrease its computation overhead for resource-constrained members in the IoV systems. The security analysis demonstrates that the proposed scheme can resist various attacks and the performance analysis shows our scheme can be implemented efficiently.