无线医疗传感网络中基于区块链的高效无证书聚合签名方案

A Blockchain-based Efficient Certificateless Aggregate Signature Scheme for Wireless Medical Sensor Networks

无线医疗传感网络依赖于可穿戴物联网设备为用户提供优质的智能医疗服务。在医疗设备通信过程中,医疗数据的安全存储和共享以及用户的隐私安全面临着巨大的挑战。存储容量资源的限制严重阻碍了区块链在无线医疗传感网络中的应用。为了解决该问题,文章提出一种基于区块链的无双线性对的无证书聚合签名方案,实现了资源快速高效的聚合,扩展了区块链的存储性能,降低了计算复杂性和数据传输的计算开销。安全性分析表明,文章方案能够确保电子医疗记录的完整性,实现医疗信息的安全存储和共享,保障WMSN中用户的隐私安全。利用PBC库进行仿真分析,显示所提方案在实现数据聚合过程中具有较高的计算效率及较低的通信开销。

Wireless medical sensor network(WMSN)provids intelligent medical services with deploying IoT devices.There were inherent challenges with secure storage and sharing of data and user privacy in communication.Unfortunately,the limited storage resources weaken the further application of the blockchain in WMSN.To solve the limitations,this paper proposes a paring-free certificateless aggregate signature scheme with the blockchain technique.The design efficiently aggregates the resources and improves the storage scalability of the blockchain.The scheme reduces the computational complexity and computational overhead of data transmission.The security analysis demonstrates the protocol is unforgeable against adaptive chosen message attacks.Finally,the performance simulation with the PBC library shows that this scheme has higher computational efficiency,while requiring lower communication cost in data aggregation.