Multilevel Unified Data Model for Critical Aviation Information Systems Cybersecurity

Critical infrastructure protection currently is one of the priorities for the state. Especially this question is acutely raises for the states, that implementing new information and communication technologies in all critical areas. These technologies, amongst other things, generate new vulnerabilities and potential cyberthreats. For example, in civil aviation criticality level substantially amplified by increased degree of communication and interaction between ground and on-board aircraft systems. Known model of requirements formation for providing civil aviation security allows formalizing the process of creating complete requirements set, which should be done to protect civil aviation against cyberthreats. But there is no mechanism for determining provision of certain security mode by the implementation of methods and tools, that are declared in appropriate requirements. In this regard, multilevel unified data model was proposed in this paper. This model uses a basic approach to forming requirements for ensuring civil aviation cybersecurity, concatenation and binary-hexadecimal transformation of security features, defining security models set and security features subsets. It allows to formalize the identification process of requirements providing and to determine security modes of different critical aviation information systems including UAV.