摘要
The Internet of Things(IoT)connects billions of devices,but concerns about data secu-rity and device identification have grown.This study introduces Proof of IoT(PIoT),a novel consensus method using blockchain-based smart contracts to ensure secure data transfer and device authentication in IoT networks.PIoT employs NuCypher-based security com-putations for authentication and data updating,ensuring only authorized parties access blockchain-recorded information.A reward-based filtering mechanism identifies malicious nodes,bolstering consensus integrity.Simulations demonstrate PIoT’s superior performance compared to conventional methods,showing a 74.7%and 96.8%improvement over LPBFT and DAC4SH Consensus,respectively.PIoT enhances blockchain security under IoT by 15%compared to DAC4SH.Beyond facilitating secure IoT device communication,this approach mitigates various IoT attacks,offering a comprehensive solution to emerging IoT security challenges.
