Development of an Imitation-Resistant Satellite Authentication Protocol Using Modular Codes of Residue Number System

Currently, the problem of ensuring universal access to the Internet resources in the Far North is very acute. It is possible to solve this problem by using low-orbit satellite Internet systems (LOSIS). As the number of LOSIS increases, the probability of unauthorized content being imposed by the offending satellite increases. This situation can be prevented by using the Spacecraft (SC) authentication protocol. The use of the modular code of residue number system (MC RNS) in the implementation of the protocol will reduce the authentication time of the spacecraft due to the transition from calculations with large numbers (140 or more digits) to parallel calculations with low-bit residues. The goal is to reduce the time spent on satellite authentication through the use of MC RNS, which will reduce the time for selecting the correct response signal by the intruder satellite and increase the information security of the LOSIS.