Comparative Analysis of Bluetooth LE and EDHOC for Potential Security Protocol in Artificial Pancreas System

The Internet of Things (IoT) has shown to be beneficial in today's increasingly connected world. IoT has transformed nearly every industry, opening up huge opportunities for future innovation and progress. The Internet of Medical Things (IoMT), as one important application area of IoT, has changed healthcare delivery, such as by playing a crucial role in treating diabetic patients with the use of Artificial Pancreas System (APS). On the other hand, a slew of current and new security threats have put IMoT's ability to offer services safely in jeopardy. Hence, it is critical to minimize these security problems, such as by safeguarding information traveling from one IMoT device to another. In this context, we investigated two vital protocols for secure communication in APS: Bluetooth Low Energy (LE) and Ephemeral Diffie-Hellman over COSE (EDHOC). Consequently, we performed an experimental evaluation of these protocols based on a number of performance metrics, including protocol execution time, transmission cost, and total round-trip time. As a result, while both protocols perform similarly in terms of the first metrics, Bluetooth LE excels in terms of transmission cost, and EDHOC outperforms in terms of round-trip time.