摘要
S盒是分组密码的重要组成部分,在很大程度上决定了分组密码的安全性。该文研究了中国分组密码标准SMS4算法S盒的平衡性、差分性质、线性结构、非线性、Walsh谱等性质,通过与美国高级加密标准、欧洲分组加密标准Camellia的S盒作比较,说明了SMS4算法S盒一些较好的安全特性。
S-boxes are quite important components of modem symmetric cryptosystems in the sense that S-boxes bring nonlinearity to block ciphers and strengthen their cryptographic security. This paper analyzes the cryptographic properties of the SMS4 S-box. Some algebraic properties of S-boxes such as Balanceness, differential characteristics, linear structures, nonlinearity and Walsh spectrums are investigated. It claims that SMS4 S-box possesses some better properties by being compared with those S-boxes used in AES and Camellia.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第5期158-160,共3页
Computer Engineering
基金
国家自然科学基金资助项目(60403007,60503006,60572059)
广东省自然科学基金资助项目(05300706)
中山大学青年教师科研启动基金资助项目(350405)
作者简介
刘佳(1983-),女,硕士研究生,主研方向:信息安全,密码学; E-mail:liujia_1116@163.com
韦宝典,讲师、博士;
戴宪华,教授、博士