摘要
设计了一种密钥流生成器方案，方案参考“停走”（Ｓｔｏｐ－ａｎｄ－Ｇｏ）生成器的思想和“交替”的产生方式，利用４ 个线性反馈移位寄存器（ＬＦＳＲ）相互驱动的非线性逻辑组合生成伪随机序列，并证明了该伪随机序列在线性反馈移位寄存器的联结多项式的次数ｎ 比较大时，具有周期大、线性复杂度高和均匀分布的“０”、“１”个数等安全特性，该伪随机序列可以很好地作为密钥流生成器使用．还给出了一个简单实现例子．
Referring to the idea of “Stop and Go” generator and “Alternating” generation mode, the scheme uses four linear feed back shift registers (LFSR) driven mutually to generate non linear pseudorandom sequences. The paper proved that it has a large period, a high linear complexity and uniform distribution of “0” and “1” properties when the degree n of the association polynomial is large enough. The pseudorandom sequences can be used as a key stream generator. A simple implementation example was given. The result shows that the scheme has good performance.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1999年第11期1465-1467,共3页
Journal of Shanghai Jiaotong University
关键词
密钥流生成器
伪随机序列
流密码
LFSR
安全通信
random key generator(RKG)
pseudo random sequence
linear feedback shift register (LFSR)
stream cipher
