基于红黑树的共享电子病历数据完整性验证方案  

Data Integrity Verification Scheme of Shared EMR Based on Red Black Tree

作　　者：周艺华 贾玉欣[1,2,3] 贾立圆 方嘉博 侍伟敏 ZHOU Yi-hua;JIA Yu-xin;JIA Li-yuan;FANG Jia-bo;SHI Wei-min(Information Department,Beijing University of Technology,Beijing 100124,China;Beijing Key Laboratory of Trusted Computing,Beijing 100124,China;Blockchain Research Center,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学信息学部,北京100124 [2]可信计算北京市重点实验室,北京100124 [3]北京工业大学区块链研究中心,北京100124

出　　处：《计算机科学》2021年第9期330-336,共7页Computer Science

基　　金：国家自然科学基金(61572053);北京市自然科学基金(4182006)。

摘　　要：为了解决共享电子病历的隐私性及数据完整性问题,在平行区块链架构的基础上,文中提出了一种基于红黑树的共享电子病历数据完整性验证方案。首先,医患完整性验证信息以不同的属性基加密的方式分别存储在患者链和医生链上,而医患数据具体信息存储在云服务提供商CSP的链下服务器上;其次,构造基于红黑树的数据完整性验证方案及动态数据更新方案。安全性分析表明,所提方案不但具有公开可验证性,能有效抵抗云服务器的伪造攻击,而且能保障用户及患者信息的隐私性,具有较高的完整性验证效率及数据更新效率。In order to solve the privacy and data integrity problems of shared electronic medical records,this paper proposes a red-black tree-based shared electronic medical records data integrity verification scheme based on the parallel blockchain architecture.First,the doctor-patient integrity verification information is stored on the patient chain and the doctor chain with different attri-bute-based encryption,and the doctor-patient data specific information is stored on the CSP off-chain server.Then,the red-black tree-based data integrity verification scheme and dynamic data update scheme are constructed.Security analysis shows that the proposed scheme not only has public verifiability,can effectively resist the cloud server forgery attack,but also can protect the privacy of user and patient information,with high efficiency of integrity verification and data update.

关 键 词：红黑树 区块链 完整性验证 共享电子病历 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]