Algebraic Aspect of Olympiads in Mathematics and Cryptography

This article discusses the illustration of some basic methods for solving problems of the Olympiad in Mathematics and Cryptography on the example of the tasks of the final in person stage of the 2018-2019 school year [14] and the analysis of solutions to problems of the Olympiad in previous years (since 2002) [13].

Cryptography, informational security, Olympiad.