STUDY OF REQUIREMENTS AND CYBER SECURITY ANALYSIS OF THE SOFTWARE OF INFORMATION AND CONTROL SYSTEMS OF NPP, IMPORTANT FOR SECURITY

In order to counter cryptoattacks on elements of critical infrastructure, in particular on computer control systems of nuclear power plants, the goal achieved in this work is to analyze the requirements for computer security (cyber security) of the software of this system, which are relevant to the stage of its design, development and operation, as well as proposed criteria and methodology for calculating the quality of compliance with these requirements. To achieve the goal, the first section of the article provides information on standards and identified requirements for software cyber security. In the second section, an analysis of the requirements is carried out and an approach to software development is described, taking into account these requirements and analyzing their consideration. In the third section, an approach to calculating the performance indicator of software cyber security requirements is proposed. The fourth chapter provides an example of the application of this approach to the existing computerized NPP management system to assess compliance with cyber security requirements. The article discusses the requirements of the international standard IEC62645 and the in