Healthcare System Using Blockchain

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Healthcare System Using Blockchain

Suchita Jadhav1, Swati Thombare2, Abhishek Patil3, Chintamani Wankhede4, Ketki Balde5

1BE Student MET BKC Institute of Engineering ,Nashik 2 BE Student MET BKC Institute of Engineering ,Nashik 3 BE Student MET BKC Institute of Engineering ,Nashik 4BE Student MET BKC Institute of Engineering ,Nashik 5Professor, MET BKC Institute of Engineering , Nashik

ABSTRACT

The global Electronic Health Record (EHR) market is growing dramatically and is expected to reach $39.7 billion by 2022. To safeguard the 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 nodes. 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 the 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:Attribute-based Access Control, Access Control List, Blockchain, Edge Computing, Hyperledger, Smart Contract
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