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序列密码利用伪随机序列来加密消息序列,伪随机序列的线性复杂度是序列密码安全性的重要度量之一。本文用序列的生成函数研究G(f)序列的线性复杂度分布以及所对应线性复杂度的序列周期,得到了几个对密码设计和分析有意义的结果。
Sequence Pseudo-random sequences are used to encrypt message sequences. The linear complexity of pseudo-random sequences is one of the important measures of cryptographic security. In this paper, we study the linear complexity distribution of G (f) sequence and the corresponding sequence period of linear complexity with the generation function of sequence, and get some meaningful results for the design and analysis of the password.