| SIMON类算法轮函数的线性性质 |
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| 引用本文： | 董向忠,关杰.SIMON类算法轮函数的线性性质[J].山东大学学报(理学版),2015,50(9):49-54. |
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| 作者姓名： | 董向忠 关杰 |
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| 作者单位： | 解放军信息工程大学密码工程学院, 河南 郑州 450000 |
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| 基金项目： | 国家自然科学基金资助项目(61202491,61272041,61272488) |
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| 摘 要： | SIMON类算法是美国国家安全局于2013年提出的一类Feistel结构的轻量级分组密码算法。通过分析轮函数F(x)的线性逼近式的线性性质,在线性逼近式的二次项相互独立的情况下,给出了轮函数F(x)的线性逼近式的相关系数为0、1/2k时输入和输出掩码应满足的条件,同时也给出了二次项相关时相关系数与输入和输出掩码之间的关系。
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| 关 键 词： | SIMON 循环移位 线性分析 相关系数 |
| 收稿时间： | 2015-02-04 |
Linear properties of the round function of SIMON family of block ciphers |
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| DONG Xiang-zhong,GUAN Jie.Linear properties of the round function of SIMON family of block ciphers[J].Journal of Shandong University,2015,50(9):49-54. |
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| Authors: | DONG Xiang-zhong GUAN Jie |
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| Institution: | School of Cryptography Engineering, the PLA Information Engineering University, Zhengzhou 450000, Henan, China |
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| Abstract: | SIMON is a family of the lightweight Feistel block ciphers designed by the U.S National Security Agency in 2013. We analyze the linear properties of the F-function F(x) and propose the sufficient conditions for correlation coefficient being 0 and 1/2k respectively when the quadratic terms of the linear approximations are independent. We also give the relationship between the correlation coefficient and the input-output masks when the quadratic terms are not independent. |
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| Keywords: | correlation coefficient linear cryptanalysis SIMON rotation |
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