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Journal of Medical Systems
Published in:

01-12-2024 | Research

Electronic Health Records Sharing Based on Consortium Blockchain

Authors: Guangfu Wu, Haiping Wang, Zi Yang, Daojing He, Sammy Chan

Published in: Journal of Medical Systems | Issue 1/2024

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Abstract

In recent years, Electronic health records (EHR) has gradually become the mainstream in the healthcare field. However, due to the fact that EHR systems are provided by different vendors, data is dispersed and stored, which leads to the phenomenon of data silos, making medical information too fragmented and bringing some challenges to current medical services. Therefore, in view of the difficulties in sharing EHR between medical institutions, the risk of privacy leakage, and the lack of EHR usage control by patients, an EHR sharing model based on consortium blockchain is proposed in this paper. Firstly, the Interplanetary File System is combined with consortium blockchain, which forms a hybrid storage scheme of EHR, this technology effectively improves data security, privacy protection, and operational efficiency. Secondly, the model combines unidirectional multi-hop conditional proxy re-encryption based on type and identity with distributed key generation technology to achieve secure EHR sharing with fine grained control. At the same time, users are required to link the operation records of EHR, so as to realize the traceability of EHR usage. A dynamic Byzantine fault-tolerant algorithm based on reputation and clustering is then proposed to solve the problems of arbitrary master node selection, high latency and low throughput of PBFT, enabling the nodes to reach consensus more efficiently. Finally, the model is analyzed in terms of security and user control, showing that the model is less energy intensive in terms of communication overhead and time consumption, and can effectively achieve secure sharing between medical data.
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Metadata
Title
Electronic Health Records Sharing Based on Consortium Blockchain
Authors
Guangfu Wu
Haiping Wang
Zi Yang
Daojing He
Sammy Chan
Publication date
01-12-2024
Publisher
Springer US
Published in
Journal of Medical Systems / Issue 1/2024
Print ISSN: 0148-5598
Electronic ISSN: 1573-689X
DOI
https://doi.org/10.1007/s10916-024-02120-9

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