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一类具有高非线性度的密码函数 被引量:3

One class of highly nonlinear cryptographic functions
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摘要 应用Hadamard变换与Kloosterman和的取值,构造了一类具有4个迹函数项的semi-bent函数.并且证明了这些新构造的n元semi-bent函数的代数次数都是n/2.这类semi-bent函数不但具有高非线性度,而且也有很高的代数次数,从而为流密码的滤波生成器的设计提供了更多可选择的函数. A class of semi-bent functions with four trace terms is constructed by using the Hadamard transform and the values of Kloosterman sums. Moreover, it is shown that the new semi-bent functions with n variables have the degree n/2. These semi-bent functions have not only high nonlinearity but also high algebraic degrees, so that they provide more available functions for designing the filter generators of stream ciphers.
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2010年第6期1107-1110,共4页 Journal of Xidian University
基金 国家自然科学基金资助项目(60773002) 国家863高技术研究发展计划资助项目(2007AA01Z472) 高等学校创新引智计划资助项目(B08038)
关键词 密码学 布尔函数 semi—bent函数 HADAMARD变换 KLOOSTERMAN和 cryptography Boolean function semi-bent function Hadamard transform Kloosterman sums
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参考文献11

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