远程教育中视频感知加密算法

针对传统加密算法在基于Android操作系统的远程教育视频存在着运行不流畅、视频播放出现漏码等问题,在综合归纳传统视频加密方案的优缺点以及H.264视频数据特点的基础上,提出了一种根据不同数据元素类型进行不同加密强度控制的感知加密算法。修改Android系统的内核,增加视频数据流处理库,导入远程教育接收装置,搭建了远程教育视频的试验平台。在试验平台上对视频信号的播放、解密以及Android系统的运行进行了测试,论证了该方法的有效性、流畅性和稳定性。

Video perceptual encryption algorithm in remote education receiver

In terms of the problems of the traditional algorithms concerning the working nonfluncy of the distance education operating system and the drop-outs video playing, a perceptive encryption algorithm was proposed based on the advantages and disadvantages of the comprehensive induction of the traditional video encryption scheme and the characteristics of the H.264 video data. Furthermore, an experimental platform of distance education video was established to modify the kernel of Android system, aggrandize the video data flow processing bank and introduce the remote education receiving devices. When the video was displayed on the basis of the perceptive encryption, asterisks appeared. The video could be displayed by applying the decryption algorithm to the perceptive algorithm. And the Android system works smoothly, which indicates that the effective control of video encryption and video decryption could be achieved through the algorithm, and the system operation stability could also be guaranteed.