【Key words】 Stream cipher； Periodic sequences； Linear complexity； k-Error linear complexity； Lattice structure； k-Error lattice structure；
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almost periodic sequences 概周期数列
binary periodic sequences 二元周期序列
asymptotically periodic sequences 渐近周期序列
r-pattern of periodic sequences 周期序列的r
periodic pulse sequences 周期性脉冲序列
periodic switching sequences 周期切换序列
Three fast algorithms for determining the k-error linear complexity of periodic sequences are proposed.7.
6．提出三个计算周期序列k-错线性复杂度的快速算法。
参考来源 - 流密码及其复杂度分析·2,447,543篇论文数据，部分数据来源于NoteExpress
The k error linear complexity of periodic sequences is one of the important security indices of stream cipher systems.
公钥密码系统以其算法设计简单、安全性高已经成为密码学领域的一个非常重要的研究课题。
Recently, some scholar mentioned implicit sequences, send the symbols that periodic sequences superimposed on information symbols.
最近，有学者提出隐训练序列的方法，将用户信息与周期训练序列进行叠加，然后再发送。
The aperiodic and periodic correlation properties of pseudorandom sequences have been discussed.
本文主要讨论了伪随机序列的非周期和周期相关特性。
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