1. 中南大学信息科学与工程学院,湖南,长沙,410083
2. 中南大学&quot
3. 移动医疗&quot
4. 教育部-中国移动联合实验室,湖南,长沙,410075
5. 长沙理工大学信息化处,湖南,长沙,410114
6. 中南大学软件学院,湖南,长沙,410075
7. 江西理工大学应用科学学院,江西,赣州,341000
8. 中南大学信息科学与工程学院,湖南,长沙,410083
11. 教育部-中国移动联合实验室,湖南,长沙,410075
12. 长沙理工大学信息化处,湖南,长沙,410114
13. 中南大学软件学院,湖南,长沙,410075
14. 江西理工大学应用科学学院,江西,赣州,341000
纸质出版:2015
移动端阅览
梁涤青, 陈志刚, 邓小鸿. 基于小波包能量熵的混沌序列复杂度分析[J]. 电子学报, 2015,43(10):1971-1977.
LIANG Di-qing, CHEN Zhi-gang, DENG Xiao-hong. Analysis of Chaotic Sequence Complexity Based on Wavelet Packet Energy Entropy[J]. Acta Electronica Sinica, 2015, 43(10): 1971-1977.
梁涤青, 陈志刚, 邓小鸿. 基于小波包能量熵的混沌序列复杂度分析[J]. 电子学报, 2015,43(10):1971-1977. DOI: 10.3969/j.issn.0372-2112.2015.10.014.
LIANG Di-qing, CHEN Zhi-gang, DENG Xiao-hong. Analysis of Chaotic Sequence Complexity Based on Wavelet Packet Energy Entropy[J]. Acta Electronica Sinica, 2015, 43(10): 1971-1977. DOI: 10.3969/j.issn.0372-2112.2015.10.014.
混沌密码学是密码学的一个新方向
混沌序列的复杂度是衡量混沌密码学安全性的重要指标.本文将小波包能量熵应用到混沌序列的复杂度分析中
首先将混沌序列进行小波包分解
然后通过小波包能量熵计算方法确定各频段能量大小
从而确定混沌序列的复杂度.通过对Logistic、TD-ERCS和Henon产生的混沌序列进行比较分析
结果表明
小波包能量熵具有全局统计特性
无需引入新参数进行相空间重构.另外
计算方法简单
且不依赖于混沌序列的采样长度与初始值
能有效衡量混沌序列的复杂度.
Chaotic cryptography is a new direction of cryptography
and chaotic sequence complexity is an important index to measure the security of chaotic cryptography.The wavelet packet energy entropy is discussed in this paper to analyze the complexity of chaotic sequence.Firstly
chaotic sequences are decomposed by wavelet packet
and then each frequency band's energy can be computed with wavelet energy entropy calculation method.Thus the complexity of chaotic sequences is finally determined.Comparing the chaotic sequences generated by Logistic
TD-ERCS and Henon
we can discover that the wavelet packet energy entropy has the global statistical property
which doesn't require new parameters for phase space reconstruction.In addition
its calculation method is simple and it does not rely on the chaotic sequence's sampling length and initial values
which can effectively measure the complexity of chaotic sequences.
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