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MIStore: a Blockchain-Based Medical Insurance Storage System
#MMPMID29968202
Zhou L
; Wang L
; Sun Y
J Med Syst
2018[Jul]; 42
(8
): 149
PMID29968202
show ga
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.
free
free
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