Property of Affine Transformation in S-box of AES
Yan Wang, Pla Uni · Journal of PLA University of Science and Technology · 2003
The S box of AES of the American new data encrypt standard is the composite of a reciprocal transformation in GF (2 8)and a affine transformation in Z 2/(x 8+1),whose properties essentially reflect the securities of AES.The distribution properties of reciprocal transformation and affine transformation are the foundation distribution property of S box in AES.In this paper the iterative property of the affine transformation is investisated, with the result that the affine transformation in AES has bad iterative property.