Blockchain-based industrial data secure sharing

According to a privacy protection sharing scheme of industrial big data based on blockchain, an alliance chain is established among system users. Based on expandability and easy deployment, a substitute scheme of cloud storage is considered. And an incentive mechanism based on an evolutionary game theory is established, an intelligent contract is constructed, and a data sharer is encouraged to share data. Moreover, a decentralized machine learning model is established based on federal learning to respect the privacy problem during data sharing, and a blockchain-based architecture allows the training data to be confidential, distributed and shared in the system. In this manner, all participating users can observe the unified model while preserving the privacy of sensitive input data. On the basis, an industrial data sharing platform based on the blockchain is designed and realized. 本发明基于区块链实现工业大数据的隐私保护共享方案，在系统用户间建立联盟链。基于可扩展性和易部署性，考虑云存储的替补方案。建立基于进化博弈论的激励机制，构建智能合约，鼓励数据共享者进行数据共享。另外，基于联邦学习建立去中心化机器学习模型，以尊重共享数据时的隐私问