一种基于演化计算的序列密码分析方法

序列密码是一类重要的密码，演化计算是一种重要的智能计算。在研究利用演化计算进行序列密码分析方法的基础上，具体给出了一种利用演化计算对非线性滤波型序列密码体制进行分析的方法。分别在移位器初态未知和抽头位置未知两种情况下，对滤波流密码体制进行了密码分析。实验结果表明，该算法的攻击复杂度远远小于穷举攻击的复杂度。

Cryptanalysis for stream cipher based on evolutionary computation

It is well known that stream cipher is an important cipher and evolutionary computing is an important intelligent computing. A new analytical method for filter model stream cipher based on evolutionary computing was proposed. A particular analytical method was given for steam cipher in two cases with the initial state of shift register and the positions of drawing out points of shift register unknown. The results of practical experiments indicate that the computational complexity of the attack method is far lower than that of exhaustive attack.