期刊
IEEE ACCESS
卷 5, 期 -, 页码 14757-14767出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2017.2730843
关键词
Access control; blockchain; cloud computing; data sharing; electronic medical records; privacy
资金
- applied basic research programs of Sichuan Province [2015JY0043]
- Fundamental Research Funds for the Central Universities [ZYGX2015J154, ZYGX2016J152, ZYGX2016J170]
- programs of International Science and Technology Cooperation and Exchange of Sichuan Province [201711110028]
- Key Research and Development Projects of High and New Technology Development and Industrialization of Sichuan Province [2017GZ0007]
- National Key Project in Cyber Security [2016QY04W0800,02,03]
- National Key Research and Development Program of China [2016QY04W0800,02,03]
The dissemination of patients' medical records results in diverse risks to patients' privacy as malicious activities on these records cause severe damage to the reputation, finances, and so on of all parties related directly or indirectly to the data. Current methods to effectively manage and protect medical records have been proved to be insufficient. In this paper, we propose MeDShare, a system that addresses the issue of medical data sharing among medical big data custodians in a trust-less environment. The system is blockchain-based and provides data provenance, auditing, and control for shared medical data in cloud repositories among big data entities. MeDShare monitors entities that access data for malicious use from a data custodian system. In MeDShare, data transitions and sharing from one entity to the other, along with all actions performed on the MeDShare system, are recorded in a tamper-proof manner. The design employs smart contracts and an access control mechanism to effectively track the behavior of the data and revoke access to offending entities on detection of violation of permissions on data. The performance of MeDShare is comparable to current cutting edge solutions to data sharing among cloud service providers. By implementing MeDShare, cloud service providers and other data guardians will be able to achieve data provenance and auditing while sharing medical data with entities such as research and medical institutions with minimal risk to data privacy.
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