| 一种基于Hnon映射和m-序列的混沌序列密码算法研究 |
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| 作者单位： | 重庆教育学院计算机与现代教育技术系，重庆教育学院计算机与现代教育技术系，重庆教育学院计算机与现代教育技术系 重庆 400067，重庆大学计算机科学与工程学院重庆 400044，重庆大学计算机科学与工程学院重庆 400067 |
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| 摘 要： | 在详细分析二维Henon映射的混沌和密码学特性的基础上,结合收缩式发生器,提出一种基于m-序列和Henon混沌序列的混合混沌序列密码算法。同时对该系统的安全性能进行了深入分析,理论和实验结果表明:在有限精度实现下,该方法可以有效提高混沌系统的复杂性和周期性,并且算法安全性高、运算速度快,适于在Internet上对多媒体信息的保密传输。
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| 关 键 词： | 序列密码 线性移位反馈寄存器 m-序列 混沌 混合混沌序列 |
A Novel Chaotic Stream Cryptographic Algorithm Based on Henon Map and m-Sequences |
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| Authors: | WEI Peng-Cheng ZHANG Wei YANG Hua-Qian |
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| Affiliation: | WEI Peng-Cheng,ZHANG Wei,YANG Hua-Qian Department of Computer and Modern Education Technology,Chongqing Education College,Chongqing 400067 Department of Computer Science and Engineering,Chongqing University,Chongqing 400044 |
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| Abstract: | The chaotic and cryptographic properties of the 2-D Henon map are analyzed firstly. By using the Shrink- ing Generator, a novel mixed chaotic cryptographic algorithm based on combining Henon map sequences and m-se- quences has been proposed in this paper. At the same time, the authors made in-depth analysis of the security perfor- mances of the system. The theoretic and simulation show that the new approach not only allows us to improve the complexity and the period of the chaotic system under the finite-precision circumstances but has high security and en- crypting speed, thus it is suitable for practical use in the multimedia secure transmission over the Internet. |
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| Keywords: | Stream cipher LFSR M-sequences Chaos Mixed chaotic sequences |
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