Enhancing IoT Security by Integrating Multi-Level Signature Verification in Smart Contract Creation using Permissioned Blockchain

Centralized signature verification methods in the Internet of Things (IoT) limit efficiency and introduce human error. This research proposes a novel multi-level signature verification system built upon smart contracts in a permissioned blockchain environment to enhance security and optimize efficiency within the Internet of Things (IoT). The system leverages user contracts created using IoT-Solidity, seamless integration with MetaMask and Ganache, and implements robust hash codes and multi-level verification processes. Performance evaluation utilizes critical metrics, such as gas limit and throughput, to quantify the system's effectiveness. This innovative approach presents a transformative solution for elevating the security paradigm within IoT by harnessing the combined power of multi-level verification and permissioned blockchain technology.