| Rijndael算法的结构归纳与攻击分析 |
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| 引用本文： | 袁巍,张云英,胡亮,李宏图,王程明.Rijndael算法的结构归纳与攻击分析[J].长春邮电学院学报,2008(5):487-493. |
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| 作者姓名： | 袁巍 张云英 胡亮 李宏图 王程明 |
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| 作者单位： | 吉林大学计算机科学与技术学院,长春130012 |
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| 基金项目： | 国家自然科学基金资助项目（60473099）;教育部新世纪优秀人才支持计划基金资助项目（NCET-06-0300） |
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| 摘 要： | 为了提高Rijndael算法的安全性，总结了Rijndael中单个变换的作用以及合并后产生的新特点。通过使用差分分析和Square分析，对Rijndael算法进行攻击分析，得出Rijndael算法对差分分析免疫，而Square分析可有效攻击多轮Rijndael的结论。Square分析有效的两个条件是Rijndael平衡性在第4轮改变和每轮子密钥之间可逆。通过改进密钥生成算法，消除轮子密钥的可逆性，使Square攻击无效，从而提高了算法的安全性。
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| 关 键 词： | 积分攻击 差分攻击 Rijndael算法 密钥生成 |
Structure Cryptanalysis of Rijndael Algorithm |
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| YUAN Wei,ZHANG Yun-ying,HU Liang,LI Hong-tu,WANG Cheng-ming.Structure Cryptanalysis of Rijndael Algorithm[J].Journal of Changchun Post and Telecommunication Institute,2008(5):487-493. |
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| Authors: | YUAN Wei ZHANG Yun-ying HU Liang LI Hong-tu WANG Cheng-ming |
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| Affiliation: | (College of Computer Science and Technology, Jilin University, Changchun 130012, China) |
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| Abstract: | For improving the safety properties of Rijndael algorithm, the use of each stage and the new feature of merged stages are summarized for Rijndael algorithm. By analyzing of differential attack and square we get the result that differential attack is useless to Rijndael but square can effectively attack Rijndael. The two conditions that square can success are the change of balance of Rijndael and the reversibility among each round of sub-key. Improved key generation algorithm eliminates the reversibility of sub-key and makes square invalid. Therefore the result and the safety properties of the algorithm are improved. |
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| Keywords: | square attack differential attack Rijndael algorithm key generation |
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