摘要
为了改进基于猫映射混沌系统的加密算法的安全性,在传统的二维猫映射混沌系统的基础上,给出了一种基于广义加法运算的广义猫映射混沌系统,生成的混沌序列具有良好的伪随机特性,同时对生成的广义混沌序列的自相关性和平衡性进行了分析。实验结果表明,应用本文给出的方法生成的广义混沌序列具有较好的随机性、自相关性和平衡性。
In order to improve security of encryption algorithm based on cat map chaotic system, an extended cat map chaotic system was proposed based on two-dimension cat map chaotic system and extended addition operation, and the sequence generated by this method was pseudorandom, The correlation performance and balance performance of the extended two-dimension chaotic sequence were analyzed. Simulation results show that the extended chaotic sequence generated by using our method is pseudorandom and its correlation performance and balance performance are good.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2007年第23期5578-5580,5605,共4页
Journal of System Simulation
基金
国家自然科学基金(60572133)
陕西省教育厅专项科研计划项目(06JK193)
关键词
混沌系统
猫映射
扩频序列
相关性
平衡性
chaotic system
Cat map
spreading sequence
correlation performance
balance performance
