Technology of Blockchain
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1307-1312,1318

Multi-level blockchain-based model for medical data sharing

Liu Yang1,2
Hu Xuexian2
Zhou Gang2
Wei Jianghong2
1. School of Cyber Science & Engineering, Zhengzhou University, Zhengzhou 450001, China
2. The PLA Strategic Support Force Information Engineering University, Zhengzhou 450001, China

Abstract

Blockchain-based medical data sharing method can effectively enhance the credibility of medical data. However, the limitation of storage capacity on blockchains and the lack of privacy protection in data have restricted the development of medical blockchains. This paper introduced a multi-level blockchain-based model for medical data sharing. Through encrypting personal medical data and their index information, it uploaded the encrypted data to the off-chain distributed storage and on-chain storage respectively. By utilizing both on-chain and off-chain hybrid storage technology and multilevel blockchains, the model improved the efficiency of data storage obviously. Moreover, the model enhanced the protection of data privacy by employing differential privacy technique in transferring parameters of federated learning module. The experimental result of the model demonstrates that the storage costs on the institution side are reduced by about 60%, and the storage costs on the user side are reduced by about 30% on average in comparison with Ethereum.

Foundation Support

国家自然科学基金资助项目

Publish Information

DOI: 10.19734/j.issn.1001-3695.2021.10.0426
Publish at: Application Research of Computers Printed Article, Vol. 39, 2022 No. 5
Section: Technology of Blockchain
Pages: 1307-1312,1318
Serial Number: 1001-3695(2022)05-004-1307-06

Publish History

[2021-12-16] Accepted Paper
[2022-05-05] Printed Article

Cite This Article

刘扬, 胡学先, 周刚, 等. 基于多层次区块链的医疗数据共享模型 [J]. 计算机应用研究, 2022, 39 (5): 1307-1312,1318. (Liu Yang, Hu Xuexian, Zhou Gang, et al. Multi-level blockchain-based model for medical data sharing [J]. Application Research of Computers, 2022, 39 (5): 1307-1312,1318. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.


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