面向学位/学历证书可信管理的可扩展类PBFT算法OA北大核心CSTPCD

"Blockchain+education"offers a solution for trust management of degree/graduation certificates.Existing methods for managing degree/graduation certificates suffer from issues such as lacked optimization strategies for node expansion,neglect of node heterogeneity,and low through put.A scalable PBFT-like algorithm for trust management of de-gree/graduation certificates was proposed to address the above issues,called z-PBFT.The algorithm was based on a hierarchical design using regional grouping,with a model consisting of main region and sub-region node clusters.Local consensus was employed within the sub-regions.A weighted random allocation strategy based on TOPSIS modeling and entropy weighting was used to evaluate node performance and select a consensus committee node set.Analysis and simu-lation experiments demonstrate that the proposed algorithm ensures security while achieving higher throughput and scal-ability in large-scale applications of degree/graduation certificate trust management.