A lightweight blockchain-based framework for medical cyber-physical system

Abstract

A medical cyber-physical system (MCPS) combines intelligent medical devices with a network. Nowadays, MCPS is extensively used in the healthcare system. While sharing patient data into MCPS, data security and privacy are significant challenges in healthcare as most of the devices suffer from data leaking, data manipulation, data forgery, denial of service attacks, etc. In this work, a reputation-based blockchain framework has been proposed to ensure patient data security while preserving privacy. A detailed security analysis discusses the possible attacks and the countermeasures of the attacks. The result and performance analysis of the proposed framework show low latency in data sharing and high throughput with an increasing number of users in the network. The calculated results established that the average latency time is reduced to (46–50%) while throughput is increased by (44–50%) as the number of users increases.