| 调和耦合混沌系统及其在伪随机数发生器中的应用 |
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| 引用本文： | 伍琦,谭作文,万常选.调和耦合混沌系统及其在伪随机数发生器中的应用[J].小型微型计算机系统,2011,32(4). |
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| 作者姓名： | 伍琦 谭作文 万常选 |
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| 作者单位： | 江西财经大学信息管理学院,江西,南昌,330032 |
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| 基金项目： | 国家自然科学基金项目(10961013)资助 |
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| 摘 要： | 混沌系统有很多独特的性质,常在密码学中用作伪随机数发生器.在帐篷映射的基础上,提出一种新型耦合方式-自变量调和耦合,构造了一个混沌系统,并对该系统的混沌特性进行了分析.随后,基于这个混沌系统设计了伪随机数发生器.频数测试、序偶测试、扑克测试、游程测试、自相关测试等五个测试表明,该伪随机数发生器产生的序列有良好的伪随机性.最后,简要分析了所产生序列的线性复杂度和发生器的密钥空间大小,并设计了一个简易的流密码加解密系统.
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| 关 键 词： | 混沌系统 帐篷映射 伪随机数发生器 密码学 |
Harmonically Coupled Chaotic System for a Pseudo-random Bit Generator |
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| WU Qi,TAN Zuo-Wen,WAN Chang-xuan.Harmonically Coupled Chaotic System for a Pseudo-random Bit Generator[J].Mini-micro Systems,2011,32(4). |
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| Authors: | WU Qi TAN Zuo-Wen WAN Chang-xuan |
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| Affiliation: | WU Qi,TAN Zuo-wen,WAN Chang-xuan(School of Information Technology,Jiangxi University of Finance and Economics,Nanchang 330032,China) |
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| Abstract: | Chaotic systems own many unique properties,based on which they are often applied for pseudo-random bit generators(PRBG).This paper proposes a new kind of coupling-independent-variable harmonic coupling,and constructs a new chaotic system based on tent map.Afterwards,the chaotic property of the system is analyzed in detail and a PRBG is designed based on it.Five tests such as Frequency test,Serial test,Poker test,Runs test,Auto-correlation test show that the PRBG possesses good pseudo-randomness.At last,the ... |
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| Keywords: | chaotic system tent map pseudo-random bit generator cryptology |
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