The Research Of Big Data Access Control Technology Based On Concept Lattice

Today,society has entered the era of big data.With the advent of the era of big data and the maturity of big data technology,today's information systems need to manage massive amounts of data,which makes information security issues increasingly prominent and attracts more and more attention.Access control technology is the gateway to information system resources and the core technology to protect resources in information systems.Role-based access control(RBAC)has become a hot research topic for researchers with its flexible adaptability.The basic concept of rolebased access control is to associate permissions with roles and assign appropriate roles to users so that users get the rights to the appropriate roles.Because RBAC matches current technology and business trends,many products directly support some form of RBAC,while others support closely related concepts.Due to the advent of the era of big data and the rapid development of cloud computing technology,the disadvantages of traditional role-based access control are gradually emerging,and it is difficult to meet the access requirements of today's information systems.In the era of big data,not only the rapid increase in the size of data,but also the size of the data has greatly increased,making it difficult to manage the relationship between many roles and permissions.At the same time,the design and management of roles is the core work of the RBAC system.The complexity of the information system puts forward higher requirements for the setting and maintenance of roles.Concept lattice,as an important method of knowledge discovery,can be used to construct a role hierarchy that satisfies constraints and become a new method for modeling RBAC models.Therefore,based on the concept lattice,this paper conducts multi-faceted research on big data access control technology based on concept lattice.The main work and contributions of this paper are as follows:The classic access control model is summarized.The characteristics and shortcomings of each access control model are analyzed.The related theories and concepts of role-based access control model are introduced.The concept lattice is studied in detail in the RBAC system.A method for modeling RBAC using the ternary concept lattice is proposed.The method proposed in this paper can realize the separation of role hierarchy and role responsibility without transforming the 3D access control matrix into a binary form background.The method provides atheoretical basis for the study of the RBAC model under ternary formal analysis.The experimental part shows the medical system network as an example.The method follows the RBAC role hierarchy and role responsibility separation constraints.It proves that the ternary form concept analysis can provide a reasonable representation of the RBAC access control strategy and provide modeling for the RBAC system based on the concept lattice.A new idea.3.The main work of modeling the RBAC system using formal concept analysis is to generate a concept lattice representing the RBAC system from the formal background of the RBAC.Aiming at this problem,this paper proposes a fast concept lattice generation algorithm,which is suitable for the task of generating concept lattices in large-scale form background,and graphically displays it,which is convenient for understanding and researching the concept lattice structure of RBAC.The paper also analyzes the influence of different parameters of the formal background on the size and speed of the concept lattice.In summary,this paper analyzes the problems faced by access control systems in big data environment.In view of the problems faced by access control in big data environment,this paper proposes a concept lattice based on concept lattice in the access control model based on concept lattice.The fast algorithm to improve the efficiency of generating concept lattices in large-scale form backgrounds.The RBAC model based on ternary concept lattice is proposed,which provides a theoretical basis for the application of ternary formal concept analysis in RBAC access control model.