FIELD: cryptography.
SUBSTANCE: technical result is achieved due to the fact that a network node configured for a cryptographic protocol based on a shared matrix is configured to form a shared matrix (A) in accordance with the selection data and the shared value sequence, the multiple entries of the shared matrix are assigned to the multiple values of the data sequence assigned by means of the selection data.
EFFECT: increase in the reliability of data transmission.
18 cl, 9 dwg
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