Зменшення рівня компрометації повідомлень в системах передачі інформації до віртуальних приватних хмар з використанням схеми Шаміра

This study investigates processes of message transmission via the Internet to a virtual private cloud using Shamir's scheme. The evolution of the infocommunication infrastructure has led to an increase in the role of cloud services. As a result, the requirements for information protection along the paths of message delivery to the clouds are increasing. The task addressed is to reduce the probability of compromising messages transmitted by a communication system. The parameters of the information transmission system that affect the probability of compromise of messages transmitted to the virtual private cloud have been studied. The most vulnerable elements in the communication system were found. To practically implement the Shamir scheme via the Internet, the possibilities of using existing routing technologies were studied. For information transmission systems with ideal nodes, the overall level of compromise significantly depends on the probability of compromise of one path element, especially for remote clouds. An increase in the probability of compromise on a single hop from 0.03 to 0.1 for 10 hops in a three-path system leads to an increase in the total compromise from 0.02 to 0.28. Protecting intermediate nodes from attacks is critical for remote clouds. With 10 hops in a three-way communication system, the overall probability of compromise increases fourfold from 0.02 to 0.08 with the same impact of an individual node and hop. Protecting end nodes for a communication system is of significant importance compared to nodes along the paths. The probability of compromise of end nodes, equal to 0.1, gives an increase in the total level of compromise from 0.03 to 0.21