Developing “friend or foe” protocol in residue number system code for satellite authentication

Abstract Low-earth orbit (LEO) satellite communication systems are successfully used in control and monitoring systems for the production and transportation of hydrocarbons from fields located beyond the Arctic Circle. As the number of countries engaged in the development of such fields expands, the number of groupings of LEO satellite communication systems grows as well. To prevent the possibility of intercepting and imposing a delayed command to control the intruder satellite, it is necessary to use the “friend or foe” identification system for the LEO satellite communication systems. At the same time, it is proposed to use authentication protocols with zero knowledge to ensure high imitation resistance in such systems. To increase their efficiency, the article proposes to use the codes of the residual number system (RNS). The novelty of this idea lies in the fact that the use of parallel RNS codes will reduce the time spent on performing arithmetic operations implemented in authentication protocols. This will reduce the likelihood of an intruder satellite picking up the correct response signal. Therefore, the development of an authentication protocol for LEO satellite communication systems based on RNS codes, the use of which will reduce the time for satellite identification, is an urgent task.