O.I. Sheluhin - Dr.Sc (Eng.), Professor, Head of Department of Information Security and Automation, Moscow Technical Univercity of Communication and Informatics. E-mail: sheluhin@mail.ru A.V. Pankrushin - Post-graduate Student, Head of Department of Information Security and Automation, Moscow Technical Univercity of Communication and Informatics E-mail: a.v.pankrushin@gmail.com