Medical blockchain: Data sharing and privacy preserving of EHR based on smart contract. (March 2022)

• Record Type: Journal Article
• Authors: Lee, Jung-San; Chew, Chit-Jie; Liu, Jo-Yun; Chen, Ying-Chin; Tsai, Kuo-Yu
• Is Part Of: Journal of information security and applications. Volume 65(2022)
• Publication Date: 2022-03
• Subjects: Electronic health record -- Data sharing -- Blockchain -- Smart contract -- HIPAA; Computer security -- Periodicals; Information technology -- Security measures -- Periodicals; 005.805
• DOI: 10.1016/j.jisa.2022.103117
• Languages: English
• ISSNs: 2214-2126

Abstract

Abstract: No doubt that medical data sharing is very crucial but important in realizing cross-hospital diagnosis and improving research development. In traditional mechanisms, there always exists a tradeoff between correctness of medical data and patient privacy. Here we are going to introduce the concept of blockchain and smart contract to build up an electronic medical record sharing mechanism: medical blockchain. Specifically, we have implemented the medical record sharing through cryptography design. Simulations have demonstrated that the correctness of medical data and privacy of patient can be guaranteed through the adoption of blockchain, while the integrity of a specific patient can be achieved via the smart contract control. Furthermore, the proposed medical blockchain can resist the potential Internet attack simulated by the formal verification. Thus, no leakage of patient identity occurs, and the tradeoff could be eliminated effectively without the modification of current hospital devices according to the simulation results.