In the above article [1], chaos-based S-box design methods are analyzed in order to reassess the nonlinearity of some previous S-box examples. As a result of the analysis, it is… Click to show full abstract
In the above article [1], chaos-based S-box design methods are analyzed in order to reassess the nonlinearity of some previous S-box examples. As a result of the analysis, it is concluded that the majority of cited articles in [1] focus only on the average nonlinearity of S-box coordinates, while remaining S-box components are ignored. On the basis of such analysis, it is concluded that the majority of studies analyzed in [1] should be re-evaluated and used with a considerable caution. However, the analysis in the above article [1] is made based on a major oversight in reviewing previous literature regarding the nonlinearity of S-boxes, which caused a wrong conclusion regarding most of the articles cited in [1].
