联盟链下的高效车联网数据安全共享研究

Research on Efficient Data Secure Sharing in Vehicular Internet Based on Consortium Blockchain

[目的/意义]旨在解决现有的车联网数据共享方案中计算开销大、共享效率低、安全性不足等问题。[方法/过程]设计了一个车联网高效数据安全共享方案,采用基于线性秘密共享(LSSS)的密文策略属性加密(CP-ABE)算法和基于联盟区块链群组技术,实现了车联网高效数据共享,减少数据冗余,并通过共识机制的优化,进一步提高时间效率,同时确保车辆实体的数据安全性和隐私性。[结果/结论]该方案能够适应车联网快速移动、动态变化的复杂特性,可实现灵活访问控制和高自由度的数据共享,满足车联网场景需求。

[Purpose/significance]This paper aims to solve the problems of high computational overhead,low sharing efficiency,and inadequate security in existing data sharing schemes for vehicular internet.[Method/process]This paper designs an efficient and secure data sharing scheme for vehicular network,which adopts the Linear Secret Sharing Scheme(LSSS)based Ciphertext-Policy Attribute-Based Encryption(CP-ABE)algorithm and the consortium blockchain group technology to realize efficient data sharing in vehicular networks and reduce data redundancy.Through the optimization of consensus mechanisms,the time efficiency is further improved and the data security and privacy of vehicular entities are ensured.[Result/conclusion]The proposed scheme is capable of accommodating the complex characteristics of rapidly moving and dynamically changing vehicular networks,enabling flexible access control and high degree of data sharing freedom to meet the requirements of vehicular network scenarios.