APPARATUS FOR MESSAGE-AUTHENTICATED DATA EXCHANGE HIDING THE CONTENTS OF TRANSMITTED DATA Russian patent published in 2022 - IPC G08B25/00 

FIELD: information security.

SUBSTANCE: invention relates to the field of supporting data exchange in information systems. Technical result of the claimed technical solution is achieved by the claimed solution involving a main apparatus including: a command table, a command counter, a pseudorandom sequence generator, a table of identifiers of controlled apparatus, a data packet generation unit, a message authentication unit, a transmitter, a main apparatus identifier unit, a command checksum calculation unit, a data packet checksum calculation unit; the communication line connects the main apparatus and the controlled apparatuses; the controlled apparatus therein includes a command execution unit, a receiver, a buffer, a decoder, a command recovery unit, a command table, a unit of identifiers of the controlled and the main apparatuses, a command number check unit, a PRS generator, a command checksum check unit, a data packet checksum check unit, a signalling unit, and a common bus.

EFFECT: hiding the contents of commands transmitted via a communication line from an outside observer with the integrity thereof and message authentication ensured.

1 cl, 2 dwg