Blockchain Framework for Secured On-Demand Patient Health Records Sharing
Blockchain Framework for Secured On-Demand Patient Health Records Sharing
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DOI：
10.1109/uemcon53757.2021.9666482
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发表时间：
2021-12
期刊：
影响因子：
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通讯作者：
Meryem Abouali;K. Sharma;O. Ajayi;T. Saadawi
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文献类型：
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作者：
Meryem Abouali;K. Sharma;O. Ajayi;T. Saadawi
医疗保健行业一直在不断完善患者健康记录系统。然而，由于患者健康记录（PHR）数据的敏感性，这些系统在处理此类数据时面临重大挑战。此外，患者数据通常存储并分散在各个医疗保健机构及不同医疗服务提供者之间。每当患者想要访问自己的健康记录并与医疗服务提供者共享时，这种分布式数据的布局就会引发问题，导致不同医疗系统之间缺乏互操作性。再者，大多数患者健康记录系统采用集中式管理结构，并将PHR数据部署到云端，这在通过网络共享患者信息时引发了隐私担忧。因此，设计一个在与医疗保健机构和医疗服务提供者共享敏感信息时兼顾患者隐私和数据安全的框架至关重要。
本文提出了一种用于安全共享患者健康记录的区块链框架，该框架使患者能够完全访问和掌控自己的健康记录。通过这种创新方法，我们的框架应用以太坊区块链智能合约、星际文件系统（IPFS）作为链下存储系统，以及NuCypher协议（该协议作为密钥管理和基于区块链的代理重加密机制），有效地创建了一个安全的按需患者健康记录共享系统。结果表明，所提出的框架比其他方案更安全，未经授权的医疗服务提供者或用户将无法访问PHR数据。此外，所有加密数据仅对患者设定的经过验证的实体可访问和可读。
The healthcare sector is constantly improving patient health record systems. However, these systems face a significant challenge when confronted with patient health record (PHR) data due to its sensitivity. In addition, patient’s data is stored and spread generally across various healthcare facilities and among providers. This arrangement of distributed data becomes problematic whenever patients want to access their health records and then share them with their care provider, which yields a lack of interoperability among various healthcare systems. Moreover, most patient health record systems adopt a centralized management structure and deploy PHRs to the cloud, which raises privacy concerns when sharing patient information over a network. Therefore, it is vital to design a framework that considers patient privacy and data security when sharing sensitive information with healthcare facilities and providers. This paper proposes a blockchain framework for secured patient health records sharing that allows patients to have full access and control over their health records. With this novel approach, our framework applies the Ethereum blockchain smart contracts, the Inter-Planetary File System (IPFS) as an off-chain storage system, and the NuCypher protocol, which functions as key management and blockchain-based proxy re-encryption to create a secured on-demand patient health records sharing system effectively. Results show that the proposed framework is more secure than other schemes, and the PHRs will not be accessible to unauthorized providers or users. In addition, all encrypted data will only be accessible to and readable by verified entities set by the patient.