| 对流密码算法Phelix的差分故障攻击 |
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| 引用本文： | 张中亚,关杰. 对流密码算法Phelix的差分故障攻击[J]. 上海交通大学学报, 2013, 47(7): 1131-1136 |
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| 作者姓名： | 张中亚 关杰 |
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| 作者单位： | （1. 信息工程大学，郑州 450004；2．解放军71282部队， 河南 洛阳 471000） |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 流密码算法Phelix是ESTREAM计划的一个候选算法，文中给出了模2n加环节XY=Z的一个基于单比特故障的差分方程组求解算法.利用该算法采用面向比特的故障诱导模型对Phelix进行了差分故障攻击，该攻击理论上只需652个单比特故障就能完全恢复256 bit的工作密钥，计算复杂度为O(220).实验结果显示，Phelix算法对差分故障攻击是不安全的.
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| 关 键 词： | 流密码 Phelix算法 差分方程 差分故障攻击 |
| 收稿时间： | 2011-07-20 |
Differential Analysis of Stream Cipher Phelix |
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| ZHANG Zhong-ya,GUAN Jie. Differential Analysis of Stream Cipher Phelix[J]. Journal of Shanghai Jiaotong University, 2013, 47(7): 1131-1136 |
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| Authors: | ZHANG Zhong-ya GUAN Jie |
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| Affiliation: | (1. Information Engineering University, Zhengzhou 450004, China; 2. Unit 71282 of the PLA, Luoyang 471000, Henan, China) |
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| Abstract: | Phelix is a candidate algorithm for the ESTREAM stream cipher project. An algorithm was presented to solve a system of differential equations based on single-bit fault on XY=Z in this paper. Then a bit-oriented differential fault analysis of Phelix based on the algorithm was shown. Theoretically, the 256-bit working key can be obtained by using 652 bit-faults, with the computational complexity of O(220). The result shows that the stream cipher Phelix is vulnerable to differential fault analysis. |
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| Keywords: | stream cipher Phelix differential equation differential fault analysis |
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