9004 Problems of information security. Computer systems Проблемы информационной безопасности. Компьютерные системы 2071-8217 7 10.48612/jisp/ev3e-fmtu-x25h Selection of trust models when integrating distributed information systems of critical application Выбор моделей доверия при интеграции распределенных информационных систем критического применения 0000-0003-4866-217X Gryzunov Vitaly 0000-0002-6076-7241 7006566675 Kornienko Anatoliy kaa.pgups@yandex.ru Glukharev Mikhail Kryukov Alexander Emperor Alexander I St. Petersburg State Transport University 24 12 2021 4 79 90

Distributed information systems of critical application are integrated with each other, which means that it is necessary to manage the distribution of trust. The article analyzes the features of trust models based on the use of electronic signatures for their applicability in information systems of critical application. The necessary conditions for the existence of a public key infrastructure are formulated and proven. Examples of threats to necessary conditions are given, trust models are selected that are suitable for the integration of information systems of critical application

 information systems of critical application information security public key infrastructure