@inproceedings{84d0cdcec9d6447e9fdf93844dd7b4ae,
title = "Access control for electronic health records with hybrid blockchain-edge architecture",
abstract = "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.",
keywords = "Access Control List, Attribute-based Access Control, Blockchain, Edge Computing, Hyperledger, Smart Contract",
author = "Hao Guo and Wanxin Li and Mark Nejad and Shen, {Chien Chung}",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 2nd IEEE International Conference on Blockchain, Blockchain 2019 ; Conference date: 14-07-2019 Through 17-07-2019",
year = "2019",
month = jul,
doi = "10.1109/Blockchain.2019.00015",
language = "English",
series = "Proceedings - 2019 2nd IEEE International Conference on Blockchain, Blockchain 2019",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "44--51",
booktitle = "Proceedings - 2019 2nd IEEE International Conference on Blockchain, Blockchain 2019",
}