| With the continuous development and innovation of Internet technology,traditional industries are beginning to seek digital and intelligent reform.Industrial Internet is a deep integration of Internet and industrial system,which realizes the open sharing of data among platforms,but also brings security risks for the closed industrial environment.Identity is an important part of information transfer in the industrial Internet,and how to ensure the trustworthiness of identity data is one of the key issues of concern for academia and industry.This paper proposes a multi-level chain-based trusted authentication scheme for industrial Internet identity metadata,focusing on the design of the underlying enterprise chain model for achieving credible authentication of identity metadata,and furthermore,in order to improve the motivation of each node to participate in consensus,this paper designs the PoRaR(Proof of Reputation and Role)consensus algorithm,and the main work accomplished is as follows:Firstly,this paper designs a trusted authentication scheme for industrial Internet identity metadata based on multi-level chains.The existing hierarchical blockchain and the method of inter-blockchain crossdomain communication are studied,a four-level structure of top node layer,intermediate layer,enterprise layer and equipment layer is designed,and the focus is on designing the enterprise chain model to realize the trusted authentication of industrial Internet identification metadata by adding a blockchain module between the existing identification resolution system and the identification data upload terminal.Secondly,this paper proposes a PoRaR consensus algorithm.The nodes that process identity in the industrial Internet are divided into three roles:creator,writer and reader,and the role coefficient is introduced to self-define the difficulty objective function of each type of node.Combining the historical contribution of nodes to calculate and update the reputation value,the consensus algorithm is designed in terms of both proof model and incentive mechanism to promote the active participation of each node in consensus.Simulations show that the PoRaR consensus algorithm proposed in this paper plays an effective incentive for nodes to participate in consensus while ensuring system security.Thirdly,this paper encapsulates the identity metadata trustworthy authentication module.The proposed enterprise chain model and PoRaR algorithm are encapsulated into a trusted authentication module for identity metadata,which is connected to the secondary node identity resolution system and developed into a WeChat applet for reading and writing operations on the identity,verifying the usability and rationality of the scheme. |
