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基于伪随机序列的宏块置乱视频加密方案
引用本文:姚晔,徐正全,杨志云.基于伪随机序列的宏块置乱视频加密方案[J].计算机工程,2005,31(20):162-164.
作者姓名:姚晔  徐正全  杨志云
作者单位:武汉大学测绘遥感信息工程国家重点实验窒多媒体通信工程中心,武汉430079
基金项目:武汉市重点科技攻关计划基金资助项目(20031003021);湖北省科技攻关计划课题(2004AA101C18)
摘    要:研究了基于宏块置乱的视频数据加密技术。该技术首先采用m序列来产生一个超长周期的伪随机序列,然后用该序列顺序生成完全不重复的宏块置乱矩阵,最后对每个视频帧依次用不同的置乱矩阵置乱。实验结果表明,该方案加密速度快效果好,并且安全性高,不会增加码流,不改变码流格式和结构特征。

关 键 词:视频加密  伪随机序列  宏块置乱
文章编号:1000-3428(2005)20-0162-03
收稿时间:08 24 2004 12:00AM
修稿时间:2004-08-24

MacroBlock Permutation Video Encryption Approach Based on Pseudo-random Sequence
YAO Ye, XU Zhengquan, YANG Zhiyun.MacroBlock Permutation Video Encryption Approach Based on Pseudo-random Sequence[J].Computer Engineering,2005,31(20):162-164.
Authors:YAO Ye  XU Zhengquan  YANG Zhiyun
Affiliation:Multimedia Communication Center. National Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079
Abstract:This paper presents a video encryption approach by MacroBlock permutation. This approach first obtains a very long periodic pseudo-random sequence by m-sequence, then generates some not repeat MacroBlock permutation matrix using this sequence, and permutates each video frame with different permutation matrix. It is shown that this approach meets the requirements of applications because it provides overall high security, high speed encryption, size preservation, and format compliancy.
Keywords:Video encryption  Pseudo-random sequence  MacroBlock permutation
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