Abstract
The design of S-box was used in some block ciphers such as Rijndeal,Camellia,SMS4,which was based on good cryptographic properties coming from integration of inverse transformation over finite fields and affine transformation.The authors investigated cryptographic properties of the three block ciphers above,and presented a kind of S-box construction model.According to the features of hardware implementation,a lot of S-boxes were constructed by using circular matrix.It claims that the new kind of S-box possesses some better properties compared with the Rijndeal S-box,and there is no significant difference in cost of hardware implementation between them.
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