V.P. Dobritsa - Dr. Sc. (Phys.-Math.). Professor, Chair of the Information Security and Communications Network, South-West State University (Kursk). E-mail: dobritsa@mail.ru P.A. Sapelchenkov - Post-Graduate Student, Chair of the Information Security and Communications Network, South-West State University (Kursk). E-mail: eveyinihiko@gmail.com