Improved Differential Attacks on Reduced SIMON Versions.
Ning Wang, Xiaoyun Wang, Keting Jia, Jingyuan Zhao · 2014
Abstract. SIMON is a family of lightweight block ciphers which are designed by the U.S Na-tional Security Agency in 2013. In this paper, we improve the previous differential attacks on SIMON family of block ciphers by considering some bit-difference equations. Combining with some new observations on key guess policies of SIMON family, we mount differential attacks on 21-