一类低频重零化子的推导及频谱分析
发布时间:2018-01-20 09:28
本文关键词: 低频重 乘积关系 零化子 频谱循环差分 频谱空间 出处:《计算机应用》2015年12期 论文类型:期刊论文
【摘要】:针对序列密码实现有效的离散傅里叶频谱攻击,前提条件是寻找到序列的低频重乘积关系或低频重零化子。利用周期序列的离散傅里叶变换,得到满足乘积关系序列的一个充要条件,并以此为基础,定义频谱循环差分,推导出一类低频重乘积关系和低频重零化子。同时研究了m序列的频谱性质,给出了m序列的频谱空间快速计算方法以及计算实例。
[Abstract]:In order to realize the effective discrete Fourier spectrum attack for the sequence cipher, the precondition is to find the low frequency multiple product relation or the low frequency multiple annihilator of the sequence, and to use the discrete Fourier transform of the periodic sequence. A sufficient and necessary condition for satisfying the product relation sequence is obtained. On this basis, the spectral cyclic difference is defined, and a class of low-frequency reproduct relations and low-frequency re-annihilators are derived. At the same time, the spectral properties of m sequences are studied. The fast calculation method of m sequence in spectrum space and an example are given.
【作者单位】: 保密通信重点实验室;
【基金】:2014年保密通信重点实验室基金资助项目(9140C110203140C11049)
【分类号】:TN918.1
【正文快照】: 0引言序列密码作为对称密码[1]体制中一种重要的分支,因其加解密速度快、易于硬件实现、错误扩散低等优点,广泛应用于军事和外交场合,对数据的保密性起着至关重要的作用。而在密码编码学发展的同时,密码分析学也相应地得到快速发展。目前针对序列密码的攻击手段已不胜枚举,其,
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