| 缩减轮数的Keccak杂凑函数差分特征 |
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| 引用本文： | 李倩男,李云强,蒋淑静,石慧.缩减轮数的Keccak杂凑函数差分特征[J].信息工程大学学报,2013,14(1):22-29. |
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| 作者姓名： | 李倩男 李云强 蒋淑静 石慧 |
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| 作者单位： | 信息工程大学密码工程学院;中国科学院光电研究院;信息工程大学科研部 |
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| 摘 要： | 研究了SHA-3标准算法Keccak轮函数的差分性质，给出了轮函数差分转移概率的计算方法，证明了轮函数差分转移概率关于z轴循环移位的相等性。根据轮函数的差分性质，提出了缩减轮数Keccak的差分特征寻找算法。最后，将得到的缩减轮数的差分特征与其它差分特征进行了比较，说明了本文的优势，并指出了文献10]中的错误。
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| 关 键 词： | 杂凑函数 Keccak 差分分析 差分特征 |
Differential Characteristic of Reduced Round Keccak Hash Function |
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| LI Qian-nan,LI Yun-qiang,JIANG Shu-jing,SHI Hui.Differential Characteristic of Reduced Round Keccak Hash Function[J].Journal of Information Engineering University,2013,14(1):22-29. |
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| Authors: | LI Qian-nan LI Yun-qiang JIANG Shu-jing SHI Hui |
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| Affiliation: | 1.Institute of Cryptographic Engineering,Information Engineering University,Zhengzhou 450004,China; 2.Academy of Optoelectronics,Chinese Academy of Sciences,Beijing 100094,China; 3.Office of Scientific Research,Information Engineering University,Zhengzhou 450001,China) |
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| Abstract: | By analyzing the differential property of standard algorithm Keccak permutation, this paper proposes a calculation method of Keccak permutation differential properties, and proves that the differential properties of permutation are equal about circular displacement on z axis. On the basis of differential characteristic of permutation, an algorithm that searches the differential characteristic of reduced round Keccak is put forward. And finally, this paper compares the result with other differential path, introduces the superiority of this method, and points out the error in article10. |
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| Keywords: | Hash function Keccak differential analysis differential characteristic |
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