摘要
通过研究外部随机信号驱动单向时空混沌系统中的一个格点使系统达到同步的问题,探索了这类同步混沌系统在多路保密通信和信息加密中的应用,其中选取了周期和非周期随机驱动信号作为系统的密钥。文中具体分析了外部驱动信号的周期性对多路通信的影响,计算了此情形下误码率和通道数的关系,并给出了二维时空混沌系统对空间信息加密变换的例子。结果表明,随机信号驱动的时空混沌同步在此类应用上具有较好的实用性和较高的保密性。
It was shown that a unidirectionally-coupled spatiotemporal chaos system could be synchronized by an exterior stochastic signal driving a single site, and the synchronized chaos could be successfully applied to multichannel data encryption and secures information storage in which the driving random signal was used as the secret key. The effect of the periodicity of the driving signal was analyzed, and the average bit error rate caused by the multi-user Interference was evaluated. An example demonstrating the secure transformation of 2D data was given with 2D-spatiotemporal chaos systems, The effectiveness, practicability and security of the proposed method for secure communication are demonstrated.
出处
《通信学报》
EI
CSCD
北大核心
2005年第7期82-88,共7页
Journal on Communications
基金
国家自然科学基金资助项目(19925414)
关键词
时空混沌
同步
多通道保密通信
信息保密存储
spatiotemporal chaos
synchronization
multichannel secure communication
secure information storage
