Paper Title
A New Substitution Box Strcuture Based on Rikitake Chaotic System

Substitution box structures are needed in order to provide the confusion requirement in block encryption algorithms. These structures must have a nonlinear structure to meet the confusion requirement. Various designs based on chaotic systems have been proposed to ensure the nonlinearity requirement. In this study, a new s-box structure based on Rikitake Chaotic System is proposed. Successful analysis results showed that the proposed new chaos based substitution box structure could be an alternative to the other three degree chaos based substitution box structures. Keywords - Chaos, Cryptography, Substitution Box, Rikitake System