Deletion and Recovery Scheme of Electronic Health Records Based onMedical Certificate Blockchain  

作　　者：Baowei Wang Neng Wang Yuxiao Zhang Zenghui Xu Junhao Zhang 

机构地区：[1]School of Computer and Software,Nanjing University of Information Science and Technology,Nanjing,210044,Jiangsu,China [2]Engineering Research Center of Digital Forensics,Ministry of Education,Nanjing,210044,Jiangsu,China

出　　处：《Computers, Materials & Continua》2023年第7期849-859,共11页计算机、材料和连续体（英文）

基　　金：supported by the National Natural Science Foundation of China under grant 61972207,U1836208,U1836110,61672290;the Major Program of the National Social Science Fund of China under Grant No.17ZDA092;by the National Key R&D Program of China under grant 2018YFB1003205;by the Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET)fund;by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)fund.

摘　　要：The trusted sharing of Electronic Health Records(EHRs)can realize the efficient use of medical data resources.Generally speaking,EHRs are widely used in blockchain-based medical data platforms.EHRs are valuable private assets of patients,and the ownership belongs to patients.While recent research has shown that patients can freely and effectively delete the EHRs stored in hospitals,it does not address the challenge of record sharing when patients revisit doctors.In order to solve this problem,this paper proposes a deletion and recovery scheme of EHRs based on Medical Certificate Blockchain.This paper uses cross-chain technology to connect the Medical Certificate Blockchain and the Hospital Blockchain to real-ize the recovery of deleted EHRs.At the same time,this paper uses the Medical Certificate Blockchain and the InterPlanetary File System(IPFS)to store Personal Health Records,which are generated by patients visiting different medical institutions.In addition,this paper also combines digital watermarking technology to ensure the authenticity of the restored electronic medical records.Under the combined effect of blockchain technology and digital watermarking,our proposal will not be affected by any other rights throughout the process.System analysis and security analysis illustrate the completeness and feasibility of the scheme.

关 键 词：Electronic health records cross-chain medical certificate blockchain data deletion and recovery 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]