He Xingyu, Niu Xianhua, Wang Yangpeng, Xiong Ling, Jiang Zhizhong, Gong Cheng
College of Computer and Software Engineering, Xihua University, Chengdu 610039, China.
National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China.
Sensors (Basel). 2022 Mar 16;22(6):2299. doi: 10.3390/s22062299.
Through information sharing, vehicles can know the surrounding road condition information timely in Vehicular Adhoc Networks. To ensure the validity of these messages and the security of vehicles, the message authentication, privacy-preserving, and delay problems are three important issues. Although many conditional privacy-preserving authentication schemes have been proposed to ensure secure communication, there still exist some imperfections such as frequent interactions or unlinkability. From this, our paper proposes a novel hierarchical blockchain-assisted authentication scheme to solve these existing issues comprehensively. First, unlinkability is achieved by a dynamic key derivation algorithm. Second, the proposed scheme can reduce correlation processing delay, queuing delay, and deployment costs by adopting hierarchical Vehicle Fog Computing. Third, cross-region authentication is achieved by taking advantage of the properties of blockchain. In addition, we demonstrate our scheme can fulfill the security criteria of the Vehicular Adhoc Network by security analysis. Furthermore, the simulations are carried out to show its availability by using JAVA and NS-3. The findings reveal that the suggested method outperforms earlier schemes in terms of computation cost and communication cost. All in all, making the authentication scheme more efficient and concise is the focus of our future research.
通过信息共享，车辆在车载自组织网络中能够及时了解周围的道路状况信息。为确保这些消息的有效性和车辆的安全性，消息认证、隐私保护和延迟问题是三个重要问题。尽管已经提出了许多条件隐私保护认证方案来确保安全通信，但仍存在一些不足之处，如频繁交互或不可链接性。据此，我们的论文提出了一种新颖的分层区块链辅助认证方案，以全面解决这些现有问题。首先，通过动态密钥派生算法实现不可链接性。其次，所提出的方案通过采用分层车辆雾计算，可以减少相关处理延迟、排队延迟和部署成本。第三，利用区块链的特性实现跨区域认证。此外，我们通过安全分析证明了我们的方案能够满足车载自组织网络的安全标准。此外，使用JAVA和NS-3进行了仿真以展示其可用性。研究结果表明，所提出的方法在计算成本和通信成本方面优于早期方案。总而言之，使认证方案更高效、简洁是我们未来研究的重点。
