Метод шифрування трафіку квадрокоптерів через аналоговий тракт впродовж моніторингу сільськогосподарських наземних об’єктів

Abstract

The purpose of this work to developed a method for encrypting the traffic of quadcopters through an analog path throughout the monitoring of agricultural ground objects. The use of unmanned aerial vehicles of a quadrocopter type for monitoring ground objects in agriculture is becoming more and more common practice and allows you to effectively solve a wide range of tasks. Technologically equipped drones in agriculture are capable of performing various monitoring operations, in particular: aerial photography, video filming, thermal filming, laser scanning, etc. Such monitoring makes it possible to assess the quality of crops and identify the fact of damage or death of crops, identify crop defects and problem areas, analyze the effectiveness of plant protection measures, check compliance with crop rotation plans, identify deviations and violations in the process of agrotechnical work, analyze the relief and create maps, conduct audit and inventory of land, carry out security measures and collect information for the security service, etc. At the same time, drones are vulnerable to information attacks, which can be carried out for different purposes, in particular, to steal a drone, use it in a network of bots to attack other devices, or to intercept information that it collects for a device operator. All this necessitates the development of effective methods of information protection of drones from cyberattacks. In this work, the Vernam cipher was used to encrypt the data, and a pseudo-random sequence generated using the Sinai mathematical billiard was used as the encryption key. Thus, an improved mathematical model for generating encryption keys based on the Sinai billiards has been proposed. On the basis of the proposed mathematical model, software was developed and working models of devices for conducting experiments were created. To create a layout, a module based on the STM32F103C8T6 microcontroller was selected, data between devices was transmitted via a radio module.