基于视频压缩标准H.264的视频加密算法

基于视频压缩标准H.264的视频加密算法

王静波, 周栩, 许相莉, 马旭炳, 于志宏, 于哲舟

吉林大学计算机科学与技术学院, 长春 130012

收稿日期:2008-04-02 修回日期:1900-01-01 出版日期:2009-01-26 发布日期:2009-01-26
通讯作者: 于哲舟

Video Encryption Algorithm Based on H.264 Standard

WANG Jingbo, ZHOU Xu, XU Xiangli, MA Xubing, YU Zhihong, YU Zhezhou

College of Computer Science and Technology, Jilin University, Changchun 130012, China

Received:2008-04-02 Revised:1900-01-01 Online:2009-01-26 Published:2009-01-26
Contact: YU Zhezhou

摘要/Abstract

摘要： 提出一种混沌的视频加密算法, 该算法利用混沌函数产生加密序列, 根据视频压缩标准H.264的原理和特点, 先对离散余弦进行变换, 并将量化后的矩阵块作空间置乱和数值扩散, 再对熵编码后的二进制序列进一步加密处理, 解决了视频信息传输的加密问题. 并在H.264参考软件JM12.4上实现了混沌的视频加密算法.

关键词: 视频压缩标准H.264, 混沌加密, Baker映射, Logistic映射, 加密层, 压缩比

Abstract: A new chaotic video encryption algorithm presented in the paper makes full use of chaotic function to generate encryption series. According to the principle and characteristics of the video compression standardH.264, first, space replacement and numerical diffusion are conducted to the coeffi cients of block matrices after discrete cosine transform quantization, and then in order to solve the problem of encryption in video data transmission, the binary sequences after entropy coding are encrypted further. The chaotic video encryption algorithm is implemented via the H.264 reference software: JM12.4. Experimental results and analysis show this algorithm exhibits encryption effect.

Key words: video compression standard-H.264, chaotic encryption, B aker mapping, Logistic mapping, encryption layer, compress rate

中图分类号:

TP309

王静波, 周栩, 许相莉, 马旭炳, 于志宏, 于哲舟. 基于视频压缩标准H.264的视频加密算法[J]. J4, 2009, 47(01): 75-81.

WANG Jingbo, ZHOU Xu, XU Xiangli, MA Xubing, YU Zhihong, YU Zhezhou. Video Encryption Algorithm Based on H.264 Standard[J]. J4, 2009, 47(01): 75-81.

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