Industrial Internet of Things security authentication method based on block chain

The invention relates to an industrial Internet of Things security authentication method based on a block chain. Registration and login of a user are conducted through an intelligent card, the identity of the user is verified through a block chain and the introduction of a fuzzy extraction technology, a block chain node is maintained through a gateway node. The identity of the user and the identity of the sensor node are verified through the block chain node and the non-interactive zero-knowledge proof, mutual verification of the user and the sensor node is achieved, and the safety of information transmission is improved. 本发明涉及一种基于区块链的工业物联网安全认证方法，通过智能卡进行用户注册和登录，通过区块链和引入模糊提取技术来验证用户身份，通过网关节点来维护区块链节点，用户和传感器节点通过区块链节点和非交互的零知识证明来验证彼此的身份，实现了用户和传感器节点的相互验证，提高了信息传递的安全性。