基于一维五邻居混沌CA的光学流密码系统

Optical system of the stream cipher based on the an one-dimensional five-neighborhood chaotic cellular automata

根据一维五邻居混沌细胞自动机 (CA)特性及其进化序列的随机性统计测试结果 ,提出一种基于一维五邻居CA光学流加密方法 .由于CA规则化的阵列结构和级连特性 ,适合于超大规模集成电路 (VLSI)和光学系统实现 ,相应给出一种光学硬件实现方案 .一维五邻居混沌CA比一维三邻居CA具有更复杂的动力学行为 ,应用多邻居CA进行加密有更强抵御攻击能力 .模拟分析显示这种基于一维五邻居CA的加密算法具有结构简单、运算速度快等优点 。

Proposes a new optical stream cipher for security applications based on the character of one dimensional five neighborhood chaotic cellular automata and the statistical test results of the sequence by this CA. The array structure of cellular automata suited for implement by VLSI and optical system. The multi neighborhood CAs have more complex behavior and in general they are potentially resistant cryptanalytical attacks. The simulation results show that: stream cipher's security is enhanced by using an one dimensional five neighborhood chaotic cellular automata, the modular structure of the algorithm is simple and higher speed. The direct cryptanalysis requires an exponentially growing amount of computational resources.