A privacy-preserving data aggregation system based on blockchain in VANET  

作　　者：Ruicheng Yang Guofang Dong Zhengnan Xu Juangui Ning Jianming Du 

机构地区：[1]School of Electrical Information Technology,Yunnan Minzu University,Kunming 650500,China [2]Yunnan Key Laboratory of Unmanned Autonomous System,Kunming,650500,China

出　　处：《Blockchain(Research and Applications)》2024年第3期140-152,共13页区块链研究（英文）

基　　金：supported by the National Natural Science Foundation of China(61662089).

摘　　要：In the realm of vehicular ad hoc networks(VANETs),data aggregation plays a pivotal role in bringing together data from multiple vehicles for further processing and sharing.Erroneous data feedback can significantly impact vehicle operations,control,and overall safety,necessitating the assurance of security in vehicular data aggregation.Addressing the security risks and challenges inherent in data aggregation within VANETs,this paper introduces a blockchain-based scheme for secure and anonymous data aggregation.The proposed scheme integrates cloud computing with blockchain technology,presenting a novel blockchain-based data aggregation system that robustly supports efficient and secure data collection in VANETs.Leveraging key escrow resilience mechanisms,the solution ensures the security of system keys,preventing the security problems caused by keys generated by third parties alone in the past.Furthermore,through secondary data aggregation,fine-grained data aggregation is achieved,providing effective support for cloud services in VANETs.The effectiveness of the proposed scheme is confirmed through security analysis and performance evaluations,demonstrating superior computational and communication efficiency compared existing alternatives.

关 键 词：Vehicular ad hoc networks Data aggregation Blockchain Key escrow resilience ANONYMITY 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TP309[自动化与计算机技术—计算机科学与技术]