Research on Blockchain Lightweight Authentication Technology for Industrial Internet of Things

Industrial Internet of Things (IIoT), as an important subset of the Internet of Things, is increasingly being applied in industrial production. Cross-domain trustworthy authentication between IIoT devices in different management domains is crucial for safeguarding sensitive data security of on-site equipment. To address the issues of resource consumption and low efficiency in traditional blockchain consensus mechanisms, this paper proposes a Reputation-based Lightweight Consensus Mechanism (LRBCM) tailored for distributed network structures in industrial IoT. LRBCM algorithm is designed based on node reputation values, enabling fast and accurate completion of the ledger consensus process while reducing communication overhead and computational complexity, thus achieving the goal of lightweight consensus. Furthermore, building upon this lightweight consensus mechanism, we introduce the Distributed Lightweight Authentication Mechanism (ELAM) based on Elliptic Curve Cryptography (ECC) to address device trustworthiness authentication concerns. Leveraging this authentication mechanism, we devise intelligent lightweight transaction identity authentication smart contracts. Finally, comprehensive research and analysis of the proposed mechanisms' performance are conducted through experimental results.