| 多圈特征的差分密码分析 |
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| 引用本文： | 崔国华,张西刚,洪帆.多圈特征的差分密码分析[J].华中科技大学学报(自然科学版),2003,31(10):47-50. |
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| 作者姓名： | 崔国华 张西刚 洪帆 |
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| 作者单位： | 华中科技大学计算机科学与技术学院
(崔国华，张西刚)，华中科技大学计算机科学与技术学院(洪帆) |
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| 基金项目： | 国家高技术研究发展计划基金资助项目 (30 1 1 3) |
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| 摘 要： | 为提高差分密码分析的速度，提出了一种同时采用两个圈特征的差分分析方法，并以简化的8圈DES为例，分别从小存储空间和大存储空间两种情况描述了该方法的具体实施过程，包括两种圈特征的选取以及该方法的性能分析．所提出的方法同样也适用于对其他密码算法的差分分析。
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| 关 键 词： | 差分分析 圈特征 信噪比 过滤 DES |
Differential cryptanalysis of multiple round characteristics |
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| Cui Guohua Zhang Xigang Hong Fan Cui Guohua Prof., College of Computer Sci. & Tech.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..Differential cryptanalysis of multiple round characteristics[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(10):47-50. |
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| Authors: | Cui Guohua Zhang Xigang Hong Fan Cui Guohua Prof College of Computer Sci & Tech Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Cui Guohua Zhang Xigang Hong Fan Cui Guohua Prof., College of Computer Sci. & Tech.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | In order to increase the speed of differential cryptanalysis, a differential cryptanalysis method was presented by making use of two round characteristics at the same time. DES reduced to 8 rounds was taken as an example to illustrate the specific process of this method from small and large memory space respectively, including the choice of 2 round characteristics and analyzing performance of the method. The method is applicable for differential cryptanalysis of other cryptographies. |
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| Keywords: | differential cryptanalysis round characteristic SNR filtering DES |
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