High-Availability Authentication and Key Agreement for Internet of Things-Based Devices in Industry 5.0

Recently, Industrial Internet of Things (IoT) has experienced significant growth and has garnered widespread interest. With industrial IoT, remote users can link and manage various sensing devices and gather instantaneous data from devices, thereby improving efficiency and productivity in industrial settings. However, challenges with existing authentication protocols in the Industrial IoT environment have been identified. To address these shortcomings, we propose a high-availability authentication and key agreement protocol for IoT-based devices, which reduces computational and communication overheads. In addition, our protocol offers privacy protection to users as the data message is transmitted by the users' pseudonym, helping to conceal their real identity. Furthermore, we also consider device dynamic updates in our proposed protocol. Security proof and analysis are provided to prove that our proposed protocol can withstand known attacks. In addition, performance analysis shows that our proposed protocol is a more efficient option than other related protocols.