| 基于混沌序列和扫描模式的视频加密算法的研究 |
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| 引用本文： | 李谦. 基于混沌序列和扫描模式的视频加密算法的研究[J]. 计算机应用与软件, 2009, 26(3) |
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| 作者姓名： | 李谦 |
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| 作者单位： | 浙江万里学院计算机系,浙江,宁波,315100 |
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| 摘 要： | 提出了一种新的基于混沌序列和扫描模式的视频序列加密算法.该算法利用扫描模式通过对二维存储空间的不同访问方法来产生非常大的扫描路径或空间填充曲线,并使用正规语言来确定扫描模式.视频加密的过程通过求解视频序列中的相邻帧之间的差值矩阵,然后压缩该差值矩阵,最后再用扫描模式和混沌序列对该差值矩阵进行加密.基于混沌序列和扫描模式的置换和替代操作,组合成了具有良好密码特性的非线性耦合结构,而且在每次迭代过程中使用了密钥的融合操作,提高了加密算法的安全性.实验以Tennis等标准视频序列进行仿真,结果表明,该算法具有良好的加密安全性和效率.
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| 关 键 词： | 视频加密 混沌序列 扫描模式 差异矩阵 差异压缩矩阵 |
ON VIDEO ENCRYPTION ALGORITHM BASED ON CHAOTIC SEQUENCE AND SCANNING MODE |
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| LI Qian. ON VIDEO ENCRYPTION ALGORITHM BASED ON CHAOTIC SEQUENCE AND SCANNING MODE[J]. Computer Applications and Software, 2009, 26(3) |
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| Authors: | LI Qian |
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| Affiliation: | Department of Computer;Zhejiang Wanli University;Ningbo 315100;Zhejiang;China |
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| Abstract: | In this paper,we proposed a new encryption algorithm for video sequence based on chaotic sequence and scanning mode.The scanning mode is determined by regular language and is used in the algorithm to generate huge scanning path or space filling curves by accessing two-dimensional space in different ways.The process of video encryption commences from finding the difference matrix between adjacent frames in video sequence,then compresses it,and finally encrypts it with scanning mode and chaotic sequence.The o... |
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| Keywords: | Video encryption Chaotic sequence Scanning mode Difference matrix Compressed difference matrix |
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