Dynamic Channel Key Regeneration Scheme with LFSR for Secure IoT Communications*
Hong Qiang Zhao, Enting Guo, Chunhua Su, Xinyi Huang · 2024
Securing the communication of wireless devices within the Internet of Things (IoT) ecosystem is a critical concern that garners considerable attention. Nowadays, leveraging physical layer data to generate lightweight channel keys for wireless devices has become a prevalent approach. However, most existing methodologies focus primarily on the key establishment for singular communication instances, often neglecting the intricate needs for ongoing key generation and renewal throughout multiple communication sessions. This paper introduces a novel channel key regeneration scheme that leverages previously utilized information from successful channel key generations. To enhance the randomness and security of the renewed key, the proposed design incorporates a linear feedback shift register (LFSR) for the generation and adjustment of new channel keys. This method aims to establish a more dynamic and secure channel key management framework, catering to the evolving demands of IoT communications.