Security Property of Chaotic Encryption Systems
ZHOU Li hui, PENG Zhao wang, FENG Zheng jin, ZHONG Ting xiu (School of Mechanical Eng., Shanghai Jiaotong Univ., Shanghai 200030, China)
The measure of security of chaotic secure communication schemes based on the active passive decomposition of natural chaotic systems was discussed in the contents of its characteristics of sensitivity to parameter mismatches. The result shows that the chaotic secure communication schemes based on the decomposition of low dimensioinal chaotic systems are not secure enough to resist the attack of adaptive synchronization. A class of chaotic secure communicatioin schemes based on the chaotic noise generator, which can eliminate such defects, was studied. The scheme is found to have characteristics that can make adaptive synchronization attack invalid. The proposed scheme is easy to implement by circuits, and its level of security can be easily adjusted. These properties make it superior to the schemes based on the active decomposition decomposition of low dimensional chaotic systems.
【CateGory Index】： TN918