FIELD: information encryption.
SUBSTANCE: invention relates to communication systems for transmission of limited digital information with cryptographic protection against unauthorized access. The technical result is achieved due to the fact that in the on-board encoder operating in the gamma mode, a memory block with a pre-recorded gamma and a gamma overlay unit are used. In this case, the gamma recorded in the memory block is pre-produced by an external encoder in the gamma mode in the amount required to encrypt the entire information array.
EFFECT: reduction of computational complexity of implementation of an on-board encoder in the gamma mode.
1 cl, 1 dwg
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