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Information 2017, 8(2), 44; doi:10.3390/info8020044

BBDS: Blockchain-Based Data Sharing for Electronic Medical Records in Cloud Environments

Center for Cyber Security, Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
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Author to whom correspondence should be addressed.
Academic Editors: Man Ho Au, Jinguang Han, Joseph K. Liu and Ali El Kaafarani
Received: 1 March 2017 / Revised: 27 March 2017 / Accepted: 13 April 2017 / Published: 17 April 2017
(This article belongs to the Special Issue Secure Data Storage and Sharing Techniques in Cloud Computing)
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Abstract

Disseminating medical data beyond the protected cloud of institutions poses severe risks to patients’ privacy, as breaches push them to the point where they abstain from full disclosure of their condition. This situation negatively impacts the patient, scientific research, and all stakeholders. To address this challenge, we propose a blockchain-based data sharing framework that sufficiently addresses the access control challenges associated with sensitive data stored in the cloud using immutability and built-in autonomy properties of the blockchain. Our system is based on a permissioned blockchain which allows access to only invited, and hence verified users. As a result of this design, further accountability is guaranteed as all users are already known and a log of their actions is kept by the blockchain. The system permits users to request data from the shared pool after their identities and cryptographic keys are verified. The evidence from the system evaluation shows that our scheme is lightweight, scalable, and efficient. View Full-Text
Keywords: cloud computing; blockchain; data sharing; privacy; access control; electronic medical records cloud computing; blockchain; data sharing; privacy; access control; electronic medical records
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Xia, Q.; Sifah, E.B.; Smahi, A.; Amofa, S.; Zhang, X. BBDS: Blockchain-Based Data Sharing for Electronic Medical Records in Cloud Environments. Information 2017, 8, 44.

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