基于区块链的医疗数据安全共享模型研究与应用

Research and Application of Blockchain Based Medical Data Security Sharing Model

随着数据开放共享趋势深入发展,数据需求和数据供给匹配程度低、数据安全保护和个人隐私保护力度小、医疗机构之间的互信机制不完善等问题日益凸显.以医疗补助“一站式”费用结算场景为应用研究对象,基于区块链技术强化医疗数据的可追溯性和审计性,通过抽取共享数据定义实现安全交换,基于属性的加密技术实现对医疗数据的访问控制,利用隐私计算模型、数据分级授信等手段强化个人隐私数据保护,通过智能合约管理和控制数据的共享机制实现自动、高效、安全的数据共享.在区块链的安全系统架构基础上,通过业务需求与数据安全合规的融合,强化“合规”“授信”“安全”“隐私”等要素,促进医疗数据共享的全局安全性与合规性.

With the deepening development of the trend of open and shared data,issues such as low matching between data demand and supply,weak protection of data security and personal privacy,and imperfect mutual trust mechanisms between medical institutions are becoming increasingly prominent.In this paper,the“one-stop”expense settlement scenario of Medicaid was taken as the application research object,the traceability and audit of medical data were strengthened based on blockchain technology,secure exchange was implemented by extracting shared data definitions,access control of medical data was implemented based on attribute encryption technology,and personal privacy data protection was strengthened by using privacy computing model,data hierarchical credit and other means,automatic,efficient,and secure data sharing was realized through smart contract management and control of data sharing mechanisms.Based on the security system architecture of blockchain,this paper strengthened the elements of“compliance”,“credit”,“security”,“privacy”,and promotes the global security and compliance of medical data sharing through the integration of business requirements and data security compliance.