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 2449669

Data is transformed via data processing performing at least one encryption and decryption using generated key data. The data processing includes a non- linear transformation having cascaded plural rounds, each of which inputs an extension key and performs a non-linear transformation. The generated key data is generated using rotationally shifting key data. An extension key is generated for each of the plural round of the non-linear transformation process from key data being rotationally shifted.

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