Research and Analysis of the Effects of Different Shielding Materials on Resisting Side-Channel Attacks on IoT Device Microcontroller

The IoT era is witnessing significant growth, with an ever-expanding array of devices finding applications in smart homes, offices, and factories. To link sensors to networks, versatile and lightweight microcontrollers are employed. Unfortunately, this surge in connectivity has given rise to increasingly severe cyber-attacks. In this study, we delve into various materials that can safeguard IoT microcontrollers against side-channel attacks. We also propose a specific structure that harnesses electromagnetic energy gaps to craft a frequency selective surface (FSS). This approach prevents the electromagnetic radiation characteristics of microcontroller encryption processes from leaking, all while ensuring smooth communication within the Wi-Fi frequency band, which enhances resist side-channel attacks.