Lightweight Smart Contract-Based Secure Healthcare Data Management over Edge-IoMT Networks

Abstract

The rapid growth of the Internet of Medical Things (IoMT) has transformed smart healthcare
by enabling real-time monitoring through wearable sensors and connected medical devices.
However, secure management of sensitive healthcare data remains a major challenge due
to privacy risks, unauthorized access, and centralized vulnerabilities. This paper proposes
a lightweight smart contract-based secure healthcare data management framework over
edge-enabled IoMT networks. The proposed architecture integrates edge computing and
blockchain technology to provide secure, decentralized, and low-latency healthcare services.
Edge gateways perform data aggregation and encryption, while lightweight smart contracts
enable secure authentication, access control, and immutable medical record management.
A lightweight consensus mechanism is incorporated to reduce computational overhead and
transaction delay in resource-constrained healthcare environments. Experimental analysis
demonstrates improved security, reduced latency, enhanced scalability, and efficient data
management compared with conventional blockchain-based healthcare systems.