关键词: 制造服务集成平台, 隐私安全, 信任机制, 双链区块链

Abstract: Blockchain has the high fitness with manufacturing service integration platform.It is an ideal technology perspective to address related problems of manufacturing service integration platform.A double chain public block chain for manufacturing service integration platform was proposed.By constructing user data sub-chain and transaction service sub-chain,the user's privacy data and transaction service data were processed and stored separately,which reduced the risk of inferring the user information by attacker through the block chain address.An encryption mechanism was designed based on the public key,and the private data on the transaction service sub chain was protected.The selective incentive mechanism was introduced into an intelligent contract based on weight to ensure the realization of transaction fairness in manufacturing service integration platform.The corresponding sub-chain extensible mechanism was proposed to solve the load balancing and transaction timeliness of massive data.A simplified PoWS consensus algorithm considering weight was designed,and a trust environment without third parties was established on the manufacturing service integration platform,thus a complete set of privacy and trust mechanism for manufacturing service integration platform was constructed.The simulation results showed that the big data security protection scheme proposed had high privacy protection and strong scalability,not only had a good and reliable peak processing speed,but also had significant advantages in reducing the load of computing nodes.

Key words: manufacturing service integration platform, privacy security, trust mechanism, double-chain blockchain