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research-article

SPChain: : Blockchain-based medical data sharing and privacy-preserving eHealth system

Authors:

Jingsong ZhaoAuthors Info & Claims

Volume 58, Issue 4

https://doi.org/10.1016/j.ipm.2021.102604

Published: 01 July 2021 Publication History

Abstract

The sharing of electronic medical records (EMRs) has great positive significance for research on disease and epidemic prevention. Recently, blockchain-based eHealth systems have achieved great success in terms of EMRs sharing and management, but there still remain some challenges. Permissioned blockchain-based solutions provide high throughput and scalability, but may suffer from rollback attacks and lead to privacy leakage. Designs based on the public blockchain, on the other hand, are more open and secure, but sacrifice scalability and have no incentives for medical institutions to join into the systems. Moreover, data retrieval in blockchain-based eHealth systems is inefficient because of the basic blockchain structure. To solve the above problems, we propose a blockchain-based medical data sharing and privacy-preserving eHealth system named SPChain. To achieve quick retrieval, we devise special keyblocks and microblocks for patients to store their EMRs. A reputation system is also constructed to motivate medical institutions to participate in SPChain. By using proxy re-encryption schemes, SPChain achieves medical data sharing for patients in a privacy-preserving manner. To evaluate SPChain, we leverage the distribution of miners in the real world to test the system’s performance and ability to resist mentioned attacks. The results show that SPChain can achieve high throughput (220 TPS) with low storage overhead. Compared with the existing schemes, SPChain achieves lower time complexity in terms of data retrieving, and can resist proposed blockchain attacks as well as SPChain attacks.

Highlights

•

Designing SPChain, a new data sharing and privacy-preserving eHealth system.

•

Proposing new block and chain structures to achieve quick data retrieval.

•

Constructing a reputation-based consensus system to stimulate miners.

•

Evaluating SPChain from resource costs and the ability to resist proposed attacks.

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Cited By

Nguyen TNguyen LHoang TBandara DWang QLu QXu XZhu LChen S(2025)Blockchain-Empowered Trustworthy Data Sharing: Fundamentals, Applications, and ChallengesACM Computing Surveys10.1145/371808257:8(1-36)Online publication date: 15-Feb-2025
https://dl.acm.org/doi/10.1145/3718082
Vijay Anand RAlagiri IJayalakshmi PBrahmam MAbdullah A(2025)Lattice Homomorphic Assisted Privacy Preserving Electronic Health Records Data Transmission in Internet of Medical Things Using BlockchainTransactions on Emerging Telecommunications Technologies10.1002/ett.7007036:2Online publication date: 14-Feb-2025
https://dl.acm.org/doi/10.1002/ett.70070
Datta SNamasudra S(2024)Blockchain-Based Smart Contract Model for Securing Healthcare Transactions by Using Consumer Electronics and Mobile-Edge ComputingIEEE Transactions on Consumer Electronics10.1109/TCE.2024.335711570:1(4026-4036)Online publication date: 22-Jan-2024
https://dl.acm.org/doi/10.1109/TCE.2024.3357115
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SPChain: Blockchain-based medical data sharing and privacy-preserving eHealth system

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cover image Information Processing and Management: an International Journal

Information Processing and Management: an International Journal Volume 58, Issue 4

Jul 2021

750 pages

ISSN:0306-4573

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Elsevier Ltd.

Publisher

Pergamon Press, Inc.

United States

Publication History

Published: 01 July 2021

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Cited By

Nguyen TNguyen LHoang TBandara DWang QLu QXu XZhu LChen S(2025)Blockchain-Empowered Trustworthy Data Sharing: Fundamentals, Applications, and ChallengesACM Computing Surveys10.1145/371808257:8(1-36)Online publication date: 15-Feb-2025
https://dl.acm.org/doi/10.1145/3718082
Vijay Anand RAlagiri IJayalakshmi PBrahmam MAbdullah A(2025)Lattice Homomorphic Assisted Privacy Preserving Electronic Health Records Data Transmission in Internet of Medical Things Using BlockchainTransactions on Emerging Telecommunications Technologies10.1002/ett.7007036:2Online publication date: 14-Feb-2025
https://dl.acm.org/doi/10.1002/ett.70070
Datta SNamasudra S(2024)Blockchain-Based Smart Contract Model for Securing Healthcare Transactions by Using Consumer Electronics and Mobile-Edge ComputingIEEE Transactions on Consumer Electronics10.1109/TCE.2024.335711570:1(4026-4036)Online publication date: 22-Jan-2024
https://dl.acm.org/doi/10.1109/TCE.2024.3357115
Kumari ABhaskar SPatil SParmar K(2024)Decentralized and Multi-Authority based Public Key Infrastructure for Sharing Electronic Health RecordsProcedia Computer Science10.1016/j.procs.2023.12.059230:C(44-54)Online publication date: 12-Apr-2024
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Matani ASahafi ABroumandnia A(2024)Improving query processing in blockchain systems by using a multi-level sharding mechanismThe Journal of Supercomputing10.1007/s11227-024-06037-580:10(15066-15096)Online publication date: 1-Jul-2024
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Xue YWang JShi KZhang H(2024)A privacy‐preserving model for blockchain‐based data sharing in the industrial internetTransactions on Emerging Telecommunications Technologies10.1002/ett.474935:4Online publication date: 8-Apr-2024
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Zhang QHe YLai RHou ZZhao G(2023)A survey on the efficiency, reliability, and security of data query in blockchain systemsFuture Generation Computer Systems10.1016/j.future.2023.03.044145:C(303-320)Online publication date: 1-Aug-2023
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Kumar MNagalakshmi V(2023)Secure transfer of robust healthcare data using blockchain-based privacyCluster Computing10.1007/s10586-023-04011-z27:2(1275-1291)Online publication date: 9-May-2023
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Li XLuo JZhou LWang H(2023)A Blockchain-Based Personal Health Record Sharing Scheme with Security and Privacy PreservationInformation Security and Cryptology10.1007/978-981-97-0942-7_8(141-159)Online publication date: 9-Dec-2023
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