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Journal of Medical Systems
Published in: Journal of Medical Systems 8/2018

Open Access 01-08-2018 | Transactional Processing Systems

MIStore: a Blockchain-Based Medical Insurance Storage System

Authors: Lijing Zhou, Licheng Wang, Yiru Sun

Published in: Journal of Medical Systems | Issue 8/2018

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Abstract

Currently, blockchain technology, which is decentralized and may provide tamper-resistance to recorded data, is experiencing exponential growth in industry and research. In this paper, we propose the MIStore, a blockchain-based medical insurance storage system. Due to blockchain’s the property of tamper-resistance, MIStore may provide a high-credibility to users. In a basic instance of the system, there are a hospital, patient, insurance company and n servers. Specifically, the hospital performs a (t, n)-threshold MIStore protocol among the n servers. For the protocol, any node of the blockchain may join the protocol to be a server if the node and the hospital wish. Patient’s spending data is stored by the hospital in the blockchain and is protected by the n servers. Any t servers may help the insurance company to obtain a sum of a part of the patient’s spending data, which servers can perform homomorphic computations on. However, the n servers cannot learn anything from the patient’s spending data, which recorded in the blockchain, forever as long as more than n − t servers are honest. Besides, because most of verifications are performed by record-nodes and all related data is stored at the blockchain, thus the insurance company, servers and the hospital only need small memory and CPU. Finally, we deploy the MIStore on the Ethererum blockchain and give the corresponding performance evaluation.
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Metadata
Title
MIStore: a Blockchain-Based Medical Insurance Storage System
Authors
Lijing Zhou
Licheng Wang
Yiru Sun
Publication date
01-08-2018
Publisher
Springer US
Published in
Journal of Medical Systems / Issue 8/2018
Print ISSN: 0148-5598
Electronic ISSN: 1573-689X
DOI
https://doi.org/10.1007/s10916-018-0996-4

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