Increasing the immunity of AES against the algebraic attacks by using the dynamic key dependent S-Boxes and studying its effect on AES immunity against the classic attacks

The security of several recently proposed ciphers relies on the fact:" that the classical methods of cryptanalysis (e.g. linear or differential attacks) are based on probabilistic characteristics, which makes their security grow exponentially withthe number of rounds". So they haven’t the suitable immunity against the algebraic attacks which becomes more powerful after XSL algorithm. in this research we will try some method to increase the immunity of AES algorithm against the algebraic attacks then we will study the effect of this adjustment.