全动态密钥流生成器DF-FCSR-8

摘要

Based on the investigation of the filtered key stream generator family F-FCSR using feedback with carry shift register (FCSR) as components, especially the reason what makes F-FCSR-Hv2 key stream generator failed, a dynamic filtered generator named DF-FCSR-8 was presented. This generator avoids Hell-Johansson attack and its key stream sequences can pass the test of NIST's suit STS. Finally, it can also resist many other attacks.%研究了基于带进位的反馈移位寄存器(FCSR)滤波的密钥流生成器族(F-FCSR),在分析F-FCSR线性弱点和F-FCSR-Hv2被攻破原因的基础之上,提出了全动态滤波密钥流生成器DF-FCSR-8.避免了利用该种情况而进行的Hell-Johansson攻击.其生成序列通过了美国技术与标准局(NIST) STS软件包的16项随机性测试,有良好的随机性.同时生成器也能抵抗其他攻击.