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对称密码算法S盒安全性分析
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广东省教育部产学研结合项目(2011B090400507);广东省科技计划高新技术产业化项目(2012B010100048);广东省科技计划项目(2011B020313022);广州市科技计划项目(11C42190700)


Security analysis of S-boxes in symmetric ciphers
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    摘要:

    S盒是大多数对称密码算法中唯一的非线性结构,其密码学特性直接决定了密码算法的好坏.该文对美国高级加密标准AES算法、韩国对称加密标准SEED算法、欧洲对称加密标准Camellia算法和中国商用密码标准SMS4算法的S盒密码学性质进行了深入的探讨,研究各种算法中S盒的代数性质和布尔函数性质,分析各种算法抵抗差分密码分析和线性密码分析等攻击的能力.通过对比S盒的优缺点,揭示了各种算法的安全性.

    Abstract:

    S-boxes bring the only nonlinearity to symmetric ciphers and strengthen their cryptographic security.A detailed analysis of the cryptographic properties of S-boxes in several symmetric ciphers,such as AES,SEED,Camellia and SMS4,is made in this paper.The algebraic properties and the Boolean functions of S-boxes are well investigated.Then the attack capability resisting to differential cryptanalysis and linear cryptanalysis are provided.At last,the security of AES,SEED,Camellia and SMS4 is revealed by comparing the advantages and disadvantages of the S-boxes used in these symmetric ciphers.

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刘佳.对称密码算法S盒安全性分析[J].南京信息工程大学学报(自然科学版),2013,5(4):352-357
LIU Jia. Security analysis of S-boxes in symmetric ciphers[J]. Journal of Nanjing University of Information Science & Technology, 2013,5(4):352-357

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  • 收稿日期:2012-07-15

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