关键词: 工业互联网, 区块链, 数据安全, 轻量级, 高通量

Abstract: With the rapid development of industrial Internet applications,its decentralized topology and resource limitations of heterogeneous devices,traditional data protection methods have been challenged.The basic technologies of decentralized trust and distributed ledger of blockchain technology are suitable for distributed and large-scale industrial Internet,which aslo becomes an effective method for Industrial Internet security and data protection.However,traditional blockchains have low computational throughput,high power consumption,limited scalability,and significant bandwidth overhead.Therefore,a security,private and lightweight expandable blockchain that met the requirements of industrial control environment was proposed.Two-layer blockchain that consisted of Restricted Resource Layer (RRL) and Extended Resource Layer (ERL) was constructed in the overlay network.The lightweight consensus algorithm,distributed trust confirmation mechanism and dynamic high-throughput management algorithm were designed,and the specific implementation process of blockchain was illustrated by local data storage request transaction in the industrial control environment.The efficient block operation of devices with different resource capabilities in the entire overlay network was expanded,and the end-to-end privacy and security were guananteed.It had provided a new way for industrial Internet in data security.

Key words: industrial Internet, blockchain, data security, lightweight, high-throughput