Block encryption device using auxiliary conversion

Details Block encryption device using auxiliary conversion Block encryption device using auxiliary conversion

H - Electricity

04

L

H04L 9/28 (2006.01) H04L 9/06 (2006.01)

Patent

CA 2449665

A data transformation method for executing a data processing process of inputting key data and performing at least one of encryption of data and decryption of data, and a key generating process of generating key data which is used by the data processing process and supplying the key data to the data processing process, wherein the data processing process comprises a non-linear function process (F) for performing a non-linear transformation of data to be transformed, and wherein the key generating process processes the key data to be supplied to the non-linear function process (F), supplies a processed key data to calculate data to a part other than the non-linear function process (F) in the data processing process.

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