A.V. Rashich - Ph. D. (Eng.), Department «Radioelectronic Means of Information Protection», Peter The Great St.Petersburg Polytechnic University. E-mail: andrey.rashich@gmail.com D.K. Fadeev - Assistant, Department «Radioelectronic Means of Information Protection», Peter The Great St.Petersburg Polytechnic University. E-mail: fadeev_dk@spbstu.ru