基于集成信用度评估智能合约的安全数据共享模型

区块链技术是一种新兴技术, 它具备防篡改、去中心化、分布式存储等特点, 可以有效地解决现有数据共享模型中隐私安全、用户控制权不足以及单点故障问题. 本文以电子病历(Electronic health record, EHR)共享为例提出一种基于集成信用度评估智能合约的数据共享访问控制模型, 为患者提供可信EHR共享环境和动态访问控制策略接口. 实验表明所提模型有效解决了患者隐私安全和对EHR控制权不足的问题. 同时就模型的特点、安全性以及性能进行了分析.

Secure Data Sharing Model Based on Smart Contract With Integrated Credit Evaluation

Blockchain technology is an emerging technology,it has the characteristics of anti-tampering,decentralization,and distributed storage.It can effectively solve the problems of privacy security,insufficient user control rights,and single point failure in the existing data sharing model.This paper takes electronic health record(EHR)sharing as an example and proposes a data sharing access control model based on smart contract with integrated credit evaluation to provide patients with a trusted EHR sharing environment and dynamic access control policy interface.Experiments show that the proposed model effectively solves the problems of patient privacy security and insufficient control of EHR.At the same time,the characteristics,safety and performance of the model are analyzed.