Analysis of Minimum Numbers of Linearly Active S-Boxes of a Class of Generalized Feistel Block Ciphers.
Xiaopei Guo, Kejian Xu, Tongsen Sun, Xiubin Fan · 2012
Abstract For a class of generalized Feistel block ciphers, an explicit recurrent formula for the minimum numbers of linearly active S-boxes of any round r is presented. Key words block cipher, generalized Feistel structure, linear spread value, the minimum number of linearly active S-boxes 1