A novel lightweight MQTT security scheme for the Internet of Medical Things

The technological advancements in digital information and communication have profoundly impacted the Internet of Things (IoT), motivating several new breeds of opportunities in practical application scenarios that profoundly influence human lives. Among emerging applications, Healthcare 4.0 has innovated next-generation healthcare services by leveraging the transformation potential of IoT technologies. A lightweight and reliable Message Queuing Telemetry Transport (MQTT) is often used to share patient-related information between medical devices and remote locations to effectively handle the heterogeneous and resource-limited characteristics of IoT devices. However, lightweight MQTT faces notable security challenges due to resource constraints, exposure to cyber threats, and the sensitivity of healthcare data. Therefore, this thesis analyses the performance of various lightweight MQTT security strategies and explores the design of novel lightweight security solutions tailored for MQTT-enabled Healthcare 4.0 by addressing key security attacks while maintaining optimal performance with low latency and minimal resource consumption, crucial for medical applications.