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A blockchain-based preserving and sharing system for medical data privacy
Future Generation Computer Systems ( IF 7.5 ) Pub Date : 2021-05-27 , DOI: 10.1016/j.future.2021.05.023
Zeng Chen , Weidong Xu , Bingtao Wang , Hua Yu

With the rapid development of information and network technology, hospital information systems (HIS) has also become a hot research area. However, data could be subjected to the threat of security attacks, leakage, tampering, and forgery during medical data transmissions, data storage, and sharing based on public networks and cloud environments. The immutability, decentralization and anonymity of the blockchain provided new ways for solving the aforementioned problems. This paper proposes a complete medical information system model based on blockchain technology, to realize the goal of safe storage and sharing of medical data. A data collection system based on Internet of Things (IoT) was also developed that can simultaneously collect data from different types of non-invasive medical instruments to realize real-time collection of patient health record during surgery (SHR). This system designed an anonymous medical data sharing scheme based on cloud servers and proxy re-encryption algorithm to improve the security of private medical data sharing. The system was implemented based on the permissioned blockchain architecture Hyperledger Fabric, and a dual-channel Fabric deployment architecture and medical chaincode were designed for data management and access control. We also carried out computing overhead test, performance test and safety evaluation on the system, and the test results meet the requirements of actual medical production environment. The research work of this paper provides means for remote diagnosis and treatment, data mining and other practical applications based on the medical data on the blockchain.



中文翻译:

基于区块链的医疗数据隐私保护和共享系统

随着信息和网络技术的飞速发展,医院信息系统(HIS)也成为研究的热点。然而,数据在基于公共网络和云环境的医疗数据传输、数据存储和共享过程中可能会受到安全攻击、泄漏、篡改和伪造的威胁。区块链的不变性、去中心化和匿名性为解决上述问题提供了新的途径。本文提出了基于区块链技术的完整医疗信息系统模型,以实现医疗数据安全存储和共享的目标。还开发了基于物联网(IoT)的数据采集系统,可以同时采集来自不同类型的无创医疗器械的数据,实现手术期间患者健康记录(SHR)的实时采集。本系统设计了一种基于云服务器和代理重加密算法的匿名医疗数据共享方案,以提高私人医疗数据共享的安全性。该系统基于许可区块链架构Hyperledger Fabric实现,并针对数据管理和访问控制设计了双通道Fabric部署架构和医疗链码。我们还对系统进行了计算开销测试、性能测试和安全评估,测试结果符合实际医疗生产环境的要求。

更新日期:2021-06-18
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