DEVICE FOR CRYPTOGRAPHIC DATA PROCESSING, METHOD OF CRYPTOGRAPHIC DATA PROCESSING AND PROGRAM Russian patent published in 2016 - IPC H04L9/06 H04L9/28 G06F21/00 

FIELD: cryptography.

SUBSTANCE: high level of data reliability and protection. Implemented is cryptographic processing of data with improved diffusion properties and high level of protection. Cryptographic data processing module splits and inputs components of data bits to be treated, in several lines and repeatedly performs data conversion with respect to data in corresponding lines using cryptanalysis. This data cryptographic processing module inputs n/d-bit data obtained by splitting n-bit data as input data according to d number of splitting, in each line and repeatedly performs round calculations, in other words, calculations including data conversion using round functions. Said n/d-bit data in each line having output data of round calculations are split into segments of d/2 data and split data is recombined for reconstruction of d segments of n/d-bit data different from output data of round calculations made at previous stage. Reconstructed data is set as input data for round calculation of the following stage.

EFFECT: high level of data reliability and protection.

15 cl, 40 dwg