基于区块链和聚合签名的可穿戴设备数据共享方案  

Data sharing scheme for wearable device based on blockchain and aggregate signature

作　　者：赵禧玮 蔡英[1] 范艳芳[1] 李汶锦 于晨 ZHAO Xiwei;CAI Ying;FAN Yanfang;LI Wenjing;YU Chen(Computer School,Beijing Information Science&Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学计算机学院,北京100192

出　　处：《北京信息科技大学学报（自然科学版）》2024年第3期91-98,共8页Journal of Beijing Information Science and Technology University

基　　金：北京市自然科学基金-海淀原始创新联合基金(L192023)。

摘　　要：可穿戴设备可以收集并共享数据来为健康监测、医学研究等提供帮助。区块链具有去中心化和不可篡改性,保证了共享数据在存储中的安全性,然而,在数据传输过程中仍面临潜在攻击者篡改伪造数据的问题。针对上述问题,提出了一种星际文件系统(interplanetary file system, IPFS)结合区块链的架构以提升区块链效率,解决存储空间不足问题;设计了一种基于椭圆曲线的无证书无配对聚合签名方案,在数据上链前对其进行签名,实现了高效安全的数据传输。安全性分析证明所提签名方案可以防范大部分攻击;性能分析表明该方案相较于现有方案具有更低的计算开销和通信开销。Wearable devices can collect and share data to provide assistance for health monitoring,medical research,etc.The blockchain is decentralized and tamper-proof,which ensures the security of shared data in storage;however,potential attackers may still tamper with forged data during data transmission.To address the above problems,an interplanetary file system(IPFS)combined with blockchain architecture was proposed to enhance blockchain efficiency and solve the problem of insufficient storage space.An elliptic curve-based pairing-free certificateless aggregate signature scheme was designed to sign the data before it was uploaded to the chain,which realized efficient and secure data transmission.The security analysis proves that the proposed signature scheme can prevent most attacks,and the performance analysis shows that the scheme has lower computation and communication overhead compared with the existing schemes.

关 键 词：可穿戴设备 数据共享 区块链 无证书无配对聚合签名 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]