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单圈T函数输出序列的线性复杂度
On the linear complexity of output sequences of single-cycle T-function
【摘要】 单圈T函数可以作为LFSR(linear feedback shift register)的代替组件用来设计序列密码,这样的序列密码算法在软件上具有很好的运行效率.研究了单圈T函数输出序列的线性复杂度等密码学性质.给出了当n为一般情况时,单圈T函数输出序列的线性复杂度,以及相应的极小多项式.
【Abstract】 The single-cycle T-functions can be used as substitute for LFSR(linear feedback shift register) in stream ciphers,and such stream ciphers are very efficient in software.We have studied some cryptographic properties of single-cycle T-functions.We present the linear complexity and the minimal polynomial of the output sequences of single-cycle T-functions when n is an arbitrary positive integer.
【关键词】 单圈T函数;
序列密码;
线性复杂度;
极小多项式;
k-错线性复杂度;
【Key words】 single-cycle T-function; stream cipher; linear complexity; minimal polynomial; k-error complexity;
【Key words】 single-cycle T-function; stream cipher; linear complexity; minimal polynomial; k-error complexity;
【基金】 国家自然科学基金(60833008,60902024)资助
- 【文献出处】 中国科学院研究生院学报 ,Journal of Graduate University of Chinese Academy of Sciences , 编辑部邮箱 ,2012年03期
- 【分类号】TN918
- 【下载频次】54