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滤波生成器的旋转对称攻击
  • ISSN号：0732-2112
  • 期刊名称：电子学报
  • 时间：0
  • 页码：494-499
  • 分类：TN918.1[电子电信—通信与信息系统;电子电信—信息与通信工程]
  • 作者机构：[1]中国科学院软件研究所信息安全国家重点实验室,北京100190, [2]中国科学院研究生院,北京100049
  • 相关基金：国家自然科学基金（No.60833008 No.60902024）
  • 相关项目：面向字的流密码的设计与分析
作者： 杨笑|武传坤|
关键词： 密码学, 滤波生成器, 旋转对称函数, cryptography, filter generator, rotation-symmetric function
中文摘要：

滤波生成器的安全性主要由滤波函数提供.为抵抗代数攻击,通常选取代数免疫函数作为滤波函数.我们发现已知的几类代数免疫函数都具有较强的旋转对称性,并在此基础上给出了一种针对滤波函数的旋转对称性质的攻击方法.我们还讨论了布尔函数的旋转对称性质以及该性质对旋转对称攻击的影响,分析了最优代数免疫函数对旋转对称攻击的脆弱性,提出了选取滤波函数的一个新准则.

英文摘要：

The security of filter generators is provided by the filter function.For the resistance to algebraic attack,functions with maximum algebraic immunity were used for designing filter functions.We find that the existing algebraic immune functions have a strong property of rotation symmetry and present a rotation-symmetric attack on the filter functions.We also discuss the rotation-symmetric property of filter functions and its influence on the rotation-symmetric attack.After the survey of the vulnerability of algebraic immunity function to the rotation-symmetric attack,we give a new criterion for the choice of filter function.

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流密码的设计与分析
期刊论文 140 会议论文 17 专利 1 著作 1
面向字的流密码的设计与分析
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