Cryptology ePrint Archive: Report 2012/169

Analysis of Minimum Numbers of Linearly Active S-Boxes of a Class of Generalized Feistel Block Ciphers

Xiaopei Guo, Kejian Xu, Tongsen Sun and Xiubin Fan

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.

Category / Keywords: secret-key cryptography / block cipher,generalized Feistel structure, linear spread value, the minimum number of linearly active S-boxes

Date: received 30 Mar 2012, last revised 30 Mar 2012

Contact author: kejianxu at amss ac cn

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Version: 20120331:130456 (All versions of this report)

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