Research on Authorization Model of Attribute Access Control Based on Knowledge Graph

Knowledge graph is an extended graphical data structure tool that can store interrelated data and visually display the relationships between different objects in large systems. It is widely used in various fields. This paper proposes an attribute-based knowledge graph authorization policy model. This model presents the access control authorization policy between users and resources, and can intuitively display the authorization relationships between various types of nodes, making it easier to understand and implement access control policies. Compared with the traditional text access control policy presentation form, the knowledge graph authorization model presentation form proposed in this article is more intuitive and easy to understand and has strong operability. Finally, this article implemented the knowledge graph authorization strategy model on the NEO4J platform, using Cypher statements to implement the graph traversal algorithm to effectively evaluate the accuracy of the authorization strategy. This experiment implements the access control knowledge graph on the NEO4J platform and combines Cypher statements to search and match access control policies more finely.