USE OF SYMMETRIC ENCRYPTION ALGORITHMS FOR SIGNAL TRANSMISSION IN WIRELESS DATA INPUT DEVICES

Abstract

Today, there are many computer systems that are designed to improve, facilitate and improve human life. As more and more researchers become interested in information processing, the development of computer systems is gaining momentum every year. With the development of information systems, possible threats, such as breaches of confidentiality, integrity and availability of processed information, are developing at an equally rapid pace. In order to prevent possible losses, the latest information security systems are constantly updated and improved. Since it is impossible to create a completely secure system, there is always the possibility of data theft, so the problem of protection of information and telecommunications systems is becoming increasingly important. Given that no protection can be perfect, a way has been developed to significantly reduce data breaches. Today, cryptosystems are mostly used to protect information and telecommunications systems and other technologies, including the protection of critical information of the state, enterprise, person or other critical data, including corporate secrets, intelligence or trade secrets.This article presents ways to use symmetric algorithms for signal transmission in remote data input devices. Information on existing algorithms of encryption and use of hash functions is given. A distinction is made between single-key and two-key methods of information encryption. The AES algorithm of its function, work of rounds, schemes of data encryption are considered in detail. The description of each algorithm is accompanied by an example which explains the features of their use. A mathematical model and an example of a block encryption algorithm are presented. The principles of operation of wireless devices are highlighted. Vulnerabilities related to wireless devices are considered and solutions for their protection are proposed.