A.M. Andreyev – Ph.D. (Eng.), Associate Professor, Military Space Academy named after A.F. Mozhajskij (St. Petersburg) E-mail: aandreev961@yandex.ru

G.N. Maltsev – Dr.Sc. (Eng.), Professor, Military Space Academy named after A.F. Mozhajskij (St. Petersburg) E-mail: georgy_maltsev@mail.ru

M.Y. Fedorenko – Military Space Academy named after A.F. Mozhajskij (St. Petersburg) E-mail: fedorenko.mihail_spb@mail.ru

The review of the current state of the technology of information transmission over space radio links of foreign space systems in closed mode is devoted to the problem of ensuring the safety of the functioning of spacecraft in orbit. Based on the analysis and generalization of information on the issues of standardization and unification of information exchange modes with space vehicles, as well as the activities of leading foreign organizations that determine the development of this area, the main trends in the use of cryptographic algorithms and the creation of cryptographic protection equipment have been established. Examples of modern samples of ground and airborne equipment of such equipment are considered. The significance of progress in the production of high-speed super-large integrated circuits and programmable logic integrated circuits to enhance the capabilities of cryptographic protection equipment is shown.

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