Access Control for Electronic Health Records with Hybrid Blockchain-Edge Architecture

被引：94

作者：

Guo, Hao ^{[1
]}

Li, Wanxin ^{[2
]}

Nejad, Mark ^{[2
]}

Shen, Chien-Chung ^{[1
]}

机构：

[1] Univ Delaware, Dept Comp & Informat Sci, Newark, DE 19716 USA

[2] Univ Delaware, Dept Civil & Environm Engn, Newark, DE 19716 USA

来源：

2019 IEEE INTERNATIONAL CONFERENCE ON BLOCKCHAIN (BLOCKCHAIN 2019) | 2019年

关键词：

Attribute-based Access Control; Access Control List; Blockchain; Edge Computing; Hyperledger; Smart Contract;

D O I：

10.1109/Blockchain.2019.00015

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The global Electronic Health Record (EHR) market is growing dramatically and expected to reach $39.7 billions by 2022. To safe-guard security and privacy of EHR, access control is an essential mechanism for managing EHR data. This paper proposes a hybrid architecture to facilitate access control of EHR data by using both blockchain and edge node. Within the architecture, a blockchain-based controller manages identity and access control policies and serves as a tamper-proof log of access events. In addition, off-chain edge nodes store the EHR data and apply policies specified in Abbreviated Language For Authorization (ALFA) to enforce attribute-based access control on EHR data in collaboration with the blockchain-based access control logs. We evaluate the proposed hybrid architecture by utilizing Hyperledger Composer Fabric blockchain to measure the performance of executing smart contracts and ACL policies in terms of transaction processing time and response time against unauthorized data retrieval.

引用

页码：44 / 51

页数：8

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