Health-zkIDM: A Healthcare Identity System Based on Fabric Blockchain and Zero-Knowledge Proof

The issue of identity authentication for online medical services has been one of the key focuses of the healthcare industry in recent years. Most healthcare organizations use centralized identity management systems (IDMs), which not only limit the interoperability of patient identities between insti...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2022-10, Vol.22 (20), p.7716
Main Authors: Bai, Tianyu, Hu, Yangsheng, He, Jianfeng, Fan, Hongbo, An, Zhenzhou
Format: Article
Language:English
Subjects:
Authentication
Biometry
Blockchain
chaincode
Confidentiality
Consortia
Data encryption chips
decentralized identity
Delivery of Health Care
Design
Digital currencies
Distributed ledger
Health care
Health care industry
Health services
healthcare
Humans
Internet of Things
Knowledge
Patients
Privacy
Public Key Infrastructure
Servers
Technology
Third party
zero-knowledge proof
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Summary:The issue of identity authentication for online medical services has been one of the key focuses of the healthcare industry in recent years. Most healthcare organizations use centralized identity management systems (IDMs), which not only limit the interoperability of patient identities between institutions of healthcare, but also create isolation between data islands. The more important matter is that centralized IDMs may lead to privacy disclosure. Therefore, we propose Health-zkIDM, a decentralized identity authentication system based on zero-knowledge proof and blockchain technology, which allows patients to identify and verify their identities transparently and safely in different health fields and promotes the interaction between IDM providers and patients. The users in Health-zkIDM are uniquely identified by one ID registered. The zero-knowledge proof technology is deployed on the client, which provides the user with a proof of identity information and automatically verifies the user's identity after registration. We implemented chaincodes on the Fabric, including the upload of proof of identity information, identification, and verification functions. The experiences show that the performance of the Health-zkIDM system can achieve throughputs higher than 400 TPS in Caliper.
ISSN:1424-8220
1424-8220
DOI:10.3390/s22207716