A blockchain-based preserving and sharing system for medical data privacy

Chen, Zeng; Wei-dong, XU; Wang, Bingtao; Yu, Hua

doi:10.1016/j.future.2021.05.023

Cited by 74 publications

(34 citation statements)

References 29 publications

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“…However, this solution is difficult to implement, consumes too many resources, and has slow processing speed and poor portability. Chen et al [20] proposed an anonymous medical data sharing scheme based on a cloud server and proxy reencryption algorithm to improve the security of private medical data sharing. However, the original data in this scheme will still be accessed, and data privacy may be compromised.…”

Section: Related Workmentioning

confidence: 99%

“…As can be seen from the table, all these schemes are based on blockchain for data sharing. Among them, Zou et al [19], Miao et al [33], and Chen et al [20] designed privacy protection for the medical data sharing process. However, our solution meets the practical needs of dedicated data dedication, secure data handling, data regulation, and data ownership.…”

Section: Function Analysismentioning

confidence: 99%

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A User-Centered Medical Data Sharing Scheme for Privacy-Preserving Machine Learning

Wang

Meng

Liu

et al. 2022

Security and Communication Networks

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With the rapid development and application of artificial intelligence technology, medical data play an increasingly important role in the medical field. However, there are privacy protection and data ownership issues in the process of data sharing, which brings difficulties to machine learning and data mining. On the one hand, for fear that they may risk being held accountable by users or even breaking the law due to these issues, healthcare providers are reluctant to share medical data. On the other hand, users are also reluctant to share medical data due to the possibility of privacy disclosure in the data sharing process. To improve the security and privacy of shared medical data, we propose a user-centered medical data sharing scheme for privacy-preserving machine learning. Our solution combines blockchain and a trusted execution environment to ensure that adversaries cannot steal the ownership and control of user data during sharing. A blockchain-based noninteractive key sharing scheme is proposed that allows only the users and the TEE to decrypt the shared data. At the same time, we design an auditing mechanism to facilitate users to audit the sharing process. The security analysis shows that the scheme ensures the privacy and security of user data during storage and sharing. We have completed simulation experiments to demonstrate the effectiveness and efficiency of our scheme.

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Section: Related Workmentioning

confidence: 99%

Section: Function Analysismentioning

confidence: 99%

A User-Centered Medical Data Sharing Scheme for Privacy-Preserving Machine Learning

Wang

Meng

Liu

et al. 2022

Security and Communication Networks

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“…In their study, Chen et al developed a medical information system model based on a blockchain that collects real-time patient data from medical devices during a surgical procedure. The model enables third-party users to access secure data via cloud servers through various applications [10].…”

Section: Related Workmentioning

confidence: 99%

“…In study [10], although the patient medical data are stored on the cloud server, only the indices of these data are kept in the blockchain. The study includes a system administrator group consisting of government medical institutions and managers of hospitals.…”

Section: Security Evaluationmentioning

confidence: 99%

An Improved blockchain-based secure medical record sharing method

Bodur

2022

Preprint

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Today, the confidentiality and security of patient medical records is of great importance. A database where patient records are kept should not fall into the hands of malicious persons. In addition to keeping medical records confidential and secure, their sharing among various entities such as individuals or institutions must be auditable and controllable. This study proposes a method that enables the storage, access, and sharing of medical data without risking security vulnerability. In the proposed method, data are stored on the cloud, whereas data access information and hash values are stored on a blockchain. The three consensus mechanisms (Proof ofWork (PoW), Proof of Stake (PoS), and Proof of Authority (PoA).) for the proposed scheme are implemented and compared with studies in the literature in terms of security analysis.The performance analysis of the proposed method showed that the Proof of Work gives the best result in terms of block size, while the Proof of Stake gives the best results in terms of block creation time and memory usage. The security analysis showed that the proposed method has many security features and is strong against attacks.

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“…Blockchain is a decentralized information storage system based on decentralized storage and P2P networks, comprehensively using cryptography and consensus algorithms to achieve decentralization [5][6][7][8][9][10][11][12][13]. The advantages of blockchain technology are the decentralization, anonymity, immutability, and traceability of stored information.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

A Traceable Online Insurance Claims System Based on Blockchain and Smart Contract Technology

et al. 2021

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In the current medical insurance claims process, there are problems of low efficiency and complex services. When a patient applies for medical insurance claims, he/she must go to the hospital to apply for a diagnosis certificate and receipt and then send the relevant application documents to the insurance company. The patient will not receive compensation until the company completes the verification with the patient’s hospital. However, we can improve the current dilemma through blockchain technology. Blockchain technology can effectively open up the information channels of the insurance industry and medical institutions, promote industry integration, and enhance the ability of insurance companies to obtain information. In this research, we used blockchain and smart contract technology to make the following contributions to the development of Internet insurance. First, blockchain and smart contract technology can effectively solve the problem of online underwriting. Second, it is conducive to improving supervision. Third, it is conducive to solving risk control problems. Fourth, it is conducive to effective anti-money laundering. The proposed scheme fulfills the following security requirements: mutual authentication of identities, non-repudiation between each of two roles, and other major blockchain-based security requirements. In the event of a dispute, we also proposed an arbitration mechanism to divide responsibilities.

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A blockchain-based preserving and sharing system for medical data privacy

Cited by 74 publications

References 29 publications

A User-Centered Medical Data Sharing Scheme for Privacy-Preserving Machine Learning

A User-Centered Medical Data Sharing Scheme for Privacy-Preserving Machine Learning

An Improved blockchain-based secure medical record sharing method

A Traceable Online Insurance Claims System Based on Blockchain and Smart Contract Technology

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