Towards Secure and Privacy-Preserving Data Sharing in e-Health Systems via Consortium Blockchain

Electronic health record sharing can help to improve the accuracy of diagnosis, where security and privacy preservation are critical issues in the systems. In recent years, blockchain has been proposed to be a promising solution to achieve personal health information (PHI) sharing with security and...

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Bibliographic Details
Published in:Journal of medical systems Vol. 42; no. 8; pp. 140 - 18
Main Authors: Zhang, Aiqing, Lin, Xiaodong
Format: Journal Article
Language:English
Published: New York Springer US 01.08.2018
Springer Nature B.V
Subjects:
Access control
Blockchain
Blockchain-based Medical Data Management System: Security and Privacy Challenges and Opportunities
Consortia
Cryptography
Cybersecurity
Data retrieval
Data structures
Diagnosis
Electronic medical records
Health
Health Informatics
Health Sciences
Medicine
Medicine & Public Health
Occupational health
Performance indices
Personal health
Preservation
Privacy
Security
Statistics for Life Sciences
Systems-Level Quality Improvement
Privacy preservation
Security
e-Health
Personal Health Information (PHI)
Blockchain
ISSN:0148-5598, 1573-689X, 1573-689X
Online Access:Get full text
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Summary:Electronic health record sharing can help to improve the accuracy of diagnosis, where security and privacy preservation are critical issues in the systems. In recent years, blockchain has been proposed to be a promising solution to achieve personal health information (PHI) sharing with security and privacy preservation due to its advantages of immutability. This work proposes a blockchain-based secure and privacy-preserving PHI sharing (BSPP) scheme for diagnosis improvements in e-Health systems. Firstly, two kinds of blockchains, private blockchain and consortium blockchain, are constructed by devising their data structures, and consensus mechanisms. The private blockchain is responsible for storing the PHI while the consortium blockchain keeps records of the secure indexes of the PHI. In order to achieve data security, access control, privacy preservation and secure search, all the data including the PHI, keywords and the patients’ identity are public key encrypted with keyword search. Furthermore, the block generators are required to provide proof of conformance for adding new blocks to the blockchains, which guarantees the system availability. Security analysis demonstrates that the proposed protocol can meet with the security goals. Furthermor, we implement the proposed scheme on JUICE to evaluate the performance.
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ISSN:0148-5598
1573-689X
1573-689X
DOI:10.1007/s10916-018-0995-5