Blockchain-Driven Key Management for Secure IoT

Rapid growth of Internet of Things(IoT) technology has resulted an extraordinary surge in number of interconnected devices, raising significant concerns regarding security and privacy. Group key management plays a crucial role in securing communication among IoT devices within a network. In this paper, a novel approach to group key management is proposed leveraging blockchain technology to address the challenges of scalability, decentralization, and trust in IoT environments. Our solution employs blockchain as a distributed ledger to securely store and manage group keys, ensuring transparency, integrity, and resilience against attacks. We present a detailed architecture and protocol for group key generation, distribution, and revocation using smart contracts on the blockchain. Furthermore, we evaluate performance and security of our approach through simulation and analysis, demonstrating its effectiveness in providing secure and efficient key management for IoT devices. This research advances IoT security, providing a foundation for creating IoT ecosystems that are resilient and trustworthy.