FIELD: cryptography.
SUBSTANCE: cryptographic device is configured to calculate a block cipher with respect to an input message, calculating a plurality of intermediate block ciphering results by calculating and recomputing a first intermediate block coding result from the plurality of intermediate block blocking results by applying a plurality of block encryption rounds after the input message, followed by one or more additional rounds of block encryption, application of a plurality of averaging functions to a plurality of intermediate results of block coding, the results of which are summed, after which a reverse additional round of block coding is applied.
EFFECT: high cryptographic robustness of the white box model.
12 cl, 10 dwg
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