序列密码猜测确定攻击的现状研究

Review of Guess and Determine Attack on Stream Ciphers

介绍了序列密码猜测确定攻击方法的基本原理及其实现方法,总结对具有非线性过滤生成器结构的密钥流生成器的猜测确定攻击方法及其在考虑滤波函数输入情况下的改进方法,概括了现有针对组合器结构序列密码的猜测确定攻击思路,并通过对A2U2算法的攻击,具体说明组合器结构的猜测确定攻击思路,总结多种方法融合的猜测确定攻击。最后,对序列密码猜测确定攻击的研究前景进行展望,指出了目前仍未解决的主要问题。

The basic principle and implementation methods of guessand determine attacks on stream ciphers are introduced, the attack method of guess and determine attacks on the key stream generator with nonlinear filter generator structure and its modified method considering the input of filter function summarized, and the existing guesses and determine attack ideas for the sequencer password of the combiner structure also well included. Then,by specifically describing the guess and determine attack on stream ciphers A2U2,thiskind of attack on combiner is expounded, and the guess and determine attacks in combination with various methods summarized. Finally, the research prospects of guess and determine attack on the sequencer password are forecasted, and the main problems that are still unresolved pointed out.