| 针对CLEFIA的多字节差分故障分析 |
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| 引用本文： | 高靖哲,赵新杰,矫文成,田军舰.针对CLEFIA的多字节差分故障分析[J].计算机工程,2010,36(19):156-158. |
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| 作者姓名： | 高靖哲 赵新杰 矫文成 田军舰 |
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| 作者单位： | 军械工程学院计算机工程系,石家庄,050003 |
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| 基金项目： | 国家自然科学基金资助项目，河北省自然科学基金数学研究专项基金资助项目 |
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| 摘 要： | 研究CLEFIA分组密码对多字节差分故障分析的安全性，给出CLEFIA分组密码算法及故障分析原理。根据在第r轮、r-1轮、 r-2轮注入多字节故障的3种条件，提出一种新的针对CLEFIA的多字节故障模型及分析方法。通过仿真实验进行验证，结果表明，由于其Feistel结构和S盒特性，CLEFIA易遭受多字节故障攻击，6~8个错误密文可恢复128 bit的CLEFIA密钥。
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| 关 键 词： | 分组密码 CLEFIA密码 Feistel结构 多字节故障 差分故障分析 |
Multiple Bytes Differential Fault Analysis on CLEFIA |
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| GAO Jing-zhe,ZHAO Xin-jie,JIAO Wen-cheng,TIAN Jun-jian.Multiple Bytes Differential Fault Analysis on CLEFIA[J].Computer Engineering,2010,36(19):156-158. |
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| Authors: | GAO Jing-zhe ZHAO Xin-jie JIAO Wen-cheng TIAN Jun-jian |
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| Affiliation: | (Dept. of Computer Engineering, Ordnance Engineering College, Shijiazhuang 050003, China) |
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| Abstract: | This paper examines the strength of CLEFIA block cipher against multiple bytes differential fault attack. It presents a principle of CLEFIA and differential fault analysis. According to inject faults into the rth, r-1th, r-2th round three conditions, it proposes a new fault analysis method on CLEFIA based on multiple bytes fault model, and verifies it through software simulation. Experimental result demonstrates that due to its Feistel structure and S-box feature, CLEFIA is vulnerable to multiple bytes fault attack, 6~8 faulty ciphertexts are needed to recover full 128 bit key. |
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| Keywords: | block cipher CLEFIA cipher Feistel structure multiple bytes faults differential fault analysis |
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