S-box design based on chaotic maps combination

Ensuring good confusion and diffusion in symmetrical cryptosystems substitution is very important. Beginning with the attacks against DES, construction of good S-boxes gained more interest due to the nonlinearity necessity. During the past years, the features of the dynamical chaotic systems were exploited to design cryptographic techniques, in order to give an alternative to classic methods. In this paper we propose a solution that combines three simple chaotic maps in order to achieve S-box with good results regarding most of the validating tests.