| FOX算法的中间相遇攻击 |
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| 引用本文： | 李荣佳,金晨辉.FOX算法的中间相遇攻击[J].通信学报,2016,37(8):185-190. |
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| 作者姓名： | 李荣佳 金晨辉 |
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| 作者单位： | 解放军信息工程大学三院，河南 郑州 450002 |
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| 基金项目： | 国家自然科学基金资助项目（No.61272488, No.61402523） |
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| 摘 要： | 研究了FOX分组密码算法在中间相遇攻击下的安全性。首先，分别构造了FOX64和FOX128的3轮中间相遇区分器，实施了6轮中间相遇攻击，得到对6轮FOX64和FOX128较好的攻击结果。其次，将FOX128的中间相遇区分器扩展到4轮，并结合时间存储数据折衷的方法，攻击了7轮FOX128，与已有的攻击结果相比，攻击的时间复杂度和存储复杂度略大，而数据复杂度明显降低。
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| 关 键 词： | 分组密码 密码分析 中间相遇攻击 FOX算法 |
Meet-in-the-middle attacks on FOX block cipher |
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| IRong-jia L,INChen-hui J.Meet-in-the-middle attacks on FOX block cipher[J].Journal on Communications,2016,37(8):185-190. |
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| Authors: | IRong-jia L INChen-hui J |
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| Affiliation: | The Third College,PLA Information Engineering University,Zhengzhou 450002,China |
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| Abstract: | The security of the block cipher FOX against meet-in-the-middle attack was analyzed. Firstly, 3-round meet-in-the-middle distinguishers was constructed and 6-round meet-in-the-middle attacks for FOX64 and FOX128 was proposed. The two attacks were beter attacks for 6-round FOX64 and FOX128, respectively. Secondly, the meet-in-the-middle distinguisher was extended of FOX128 to 4 rounds and proposed 7-round meet-in-the-middle attack combined with time/memory/data tradeoff. Compared to the currently known attacks on 7-round FOX128, The attack has a greater time and memory complexity, however the data complexity is much smaller. |
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| Keywords: | block cipher cryptanalysis meet-in-the-middle attack FOX |
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