Leveraging Fine-Grained Access Control in Blockchain-Based Healthcare System

Abstract

Due to the development of health care industry and digitization of medical data, recent years have experienced major changes in storage of electronic health record on cloud environment, making data exchange feasible between patient and healthcare provider. However, this new shift comes with the risk of security and privacy concerns of patient and data. The exchange of healthcare data among patients and healthcare provider with high level of security is a challenging task. In this paper, we proposed a novel system with the combination of blockchain and interplanetry file system for data sharing and uploading. We design a fine-grained access control mechanism using smart contract which provide a different level of access rights to the users in the network. We implement our system on Ethereum private blockchain and use proof of authority for consensus mechanism.