期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：53
期号：2
出版社：Journal of Theoretical and Applied
摘要：In this paper we propose and we show a new approach of nonlinear transformation algorithm for AES SBox to enhance the complexity of the SBox structure,we making AES stronger by using Dynamic Sbox,with look up table Sbox and Key expansion as modified when we change the initial key, that effectively providing a high resistance against differential cryptanalysis and especially the linear cryptanalysis. The structure of the AES S-box has been expanded and modified to be accordance with the proposed algorithm and to obtain good nonlinearity of the Sbox. This has been done without changing the basic operations of AES.The proposed modifications of the Advanced Encryption and a modified Sbox are implemented in Cyclone II Dvice by using VHDL language.
