Lightweight Authentication for IOT Edge Devices

The advent of Internet of Things (IoT) technology has brought considerable advantages to both personal and professional realms. However, the integration of IoT devices into diverse systems has underscored the pressing issue of security. Safeguarding data confidentiality in IoT systems necessitates the implementation of robust security measures, including encryption, authentication, and access control mechanisms. When effectively employed, these measures pave the way for the development of an efficient and secure IoT system, offering substantial benefits to end-users. This paper introduces a lightweight authentication solution tailored for IoT edge devices. Specifically designed for the edge network's large-scale nodes, our proposed solution optimally transmits information under limited bandwidth using lightweight symmetric cryptography, leveraging the chacha20 algorithm for session key establishment. Rigorous protocol correctness analysis using the Scyther tool confirms the superiority of our proposed protocol over alternative approaches, particularly in terms of communication and time costs.