| 变种Camellia对Square攻击的安全性 |
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| 引用本文： | 李清玲,李超.变种Camellia对Square攻击的安全性[J].应用科学学报,2006,24(5):485-490. |
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| 作者姓名： | 李清玲 李超 |
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| 作者单位： | 1. 国防科技大学数学与系统科学系, 湖南长沙 410073;2. 东南大学移动通信国家重点实验室, 江苏南京 210096 |
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| 基金项目： | 国家自然科学基金;国家重点实验室基金 |
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| 摘 要： | 讨论了Camellia1对Square攻击的安全性,并就FL/FL-1函数对Camellia与Camellia1抗Square攻击能力的影响进行了分析.结果表明Camellia1对Square攻击的安全性远大于Camellia,FL/FL-1函数中的比特循环移位运算对Camellia及Camellia1抗Square攻击的能力并无明显影响,而算法中的不规则层FL/FL-1函数显著影响了Camellia及Camellia1对Square攻击的安全性
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| 关 键 词： | Camellia算法 Square攻击 分组密码 |
| 文章编号： | 0255-8297（2006）05-0485-06 |
| 收稿时间： | 2005-04-09 |
| 修稿时间： | 2005-04-092005-07-05 |
Safety of Variant Camellia against Square Attack |
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| LI Qing-ling,LI Chao.Safety of Variant Camellia against Square Attack[J].Journal of Applied Sciences,2006,24(5):485-490. |
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| Authors: | LI Qing-ling LI Chao |
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| Institution: | 1. Department of Mathematics and System Science, National University of Defense Technology, Changsha 410073, China;2. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China |
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| Abstract: | By changing round functions of Camellia into round function with an S-P-S structure,a variant Camellia is obtained,denoted Camellia1.This paper discusses safety of Camellia against square attack and analyzes the influence of FL/FL~(1) functions on the safety of Camellia and Camellia1 against square attacks.The results show that Camellia1 is safer than Camellia.The bit-rotation of FL/FL~(-1) functions does not noticeably affect the safety of Camellia and Camellia1,while the layer of FL/FL~(-1) functions clearly affects the safety. |
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| Keywords: | block cipher Camellia algorithm Square attack |
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