MATHEMATICAL MODEL OF USE RESTRICTION

Abstract

This article considers the issues of mathematical modeling of the process of restricting access in information systems of commercial banks. In the study, users of banking information systems, system resources, roles and access rights are identified as the main parameters, and the relationship between them is described through formal mathematical expressions. An approach to using an access rights matrix to express users' rights to use resources is proposed. Also, a mechanism for managing user rights is developed based on the role-based access control (RBAC) model. The thesis highlights the general structure of algorithms for granting access rights and checking access restrictions in information systems of commercial banks, and justifies their importance in ensuring information security. The proposed mathematical models and algorithms serve to prevent unauthorized access in banking information systems, strictly control user rights, and increase the overall security level of the system.