A Hybrid Group Key Management System for Secure IoT Networks Using IT2FONC‐HKM Approach

Key Management System aids in safeguarding cryptographic keys within an organization, which becomes complex particularly in decentralized Internet of Things networks because of the wide range of devices and constant development of the structure of the network. Numerous existing research were made for efficient key management, but these methods face some, issues, such as the misbalancing of performance metrics and low security for important parameters in the data sharing. To overcome these problems, this work developed a Hybrid Group Key Management system that utilizes Interval Type 2 Fuzzy Logic and Optimal Non‐Monopoly Search Strategy Boosted Coati (ONS‐CO) algorithm named IT2FONC‐HKM approach. The proposed work effectively manages qualitative and quantitative decision‐making by combining Type 2 Fuzzy Logic. The ONS‐CO affirms that unauthorized devices are rapidly eliminated from the network, which improves the performance of the key revocation process. The Hybrid Group Key Management system is more effective for resource‐constrained environments. This work presents a comprehensive comparative analysis to appraise the effectiveness of the IT2FONC‐HKM approach. The evaluation results demonstrate that the IT2FONC‐HKM procures superior effectiveness with a high‐security level of 99.2%, and low encryption and decryption times of 0.4 and 0.3 s. The Hybrid Group Key Management system offers a robust solution to safeguard communication in IoT networks and tackles the revocation issues faced by existing approaches.