Data conversion apparatus and data conversion method

G - Physics – 09 – C

Patent

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Details

G09C 1/00 (2006.01) H04K 1/00 (2006.01) H04L 9/00 (2006.01) H04L 9/08 (2006.01)

Patent

CA 2485943

A sub converter 330 provided in a data conversion apparatus for data encryption/decryption includes a data conversion function and a data transfer function or key transfer function, the sub converter converts data and transfers data that is nonlinear converted in a main converter 320 or a key that is outputted from a key KL register 240, by switching between the data conversion function and the data or key transfer function.

L'invention concerne un convertisseur auxiliaire (330) installé dans un dispositif de conversion de données effectuant un chiffrement/déchiffrement de données. Le convertisseur auxiliaire comprend une fonction de conversion de données et une fonction de transmission de données ou une fonction de transmission de clés. Le convertisseur auxiliaire commute entre la fonction de conversion de données et la fonction de transmission de données ou de clés, pour convertir des données et transmettre des données converties de façon non linéaire dans un convertisseur principal (320) ou des clés extraites d'un registre KL de clés (240).

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