MPEG音频快速加密算法  

A Fast Encryption Algorithm for MPEG Audio

作　　者：向辉[1] 石教英[2] 

机构地区：[1]山东大学计算机学院,济南250100 [2]浙江大学计算机辅助设计与图形学国家重点实验室,杭州310027

出　　处：《系统仿真学报》2001年第S2期263-266,共4页Journal of System Simulation

摘　　要：随着Internet和WWW的飞速发展,多媒体信息安全问题对于多媒体商务活动越来越重要。新型的多媒体应用需要新的数据加密技术。近年来,在这方面的研究取得了一些成果,主要针对视频数据和图像数据。本文基于随机置乱提出一个MPEG音频数据的快速加密算法,对一、二、三层的MPEG音频数据均适用。由于加/解密算法嵌入在MPEG音频编码/解码过程中,而并不增加很多运算开销,同时取得了令人满意的安全性。最后,我们讨论了一些有潜力的重要研究方向。With the flourish of Internet and World-Wide-Web, multimedia information security become more and more important for multimedia commerce. Several contributions in the literature emerged in recent years. However, they focused on Video data streams, say, MPEG video. In this paper, we present a novel encryption algorithm for MPEG audio data including all three layers that is based on a random permutation scheme. Because our encryption algorithm is incorporated into the normal coding/encoding procedures, it is very fast, though achieved enough security. We also suggest some directions worth further research works.

关 键 词：随机置乱 MPEG音频 快速加密 

分 类 号：TN919.8[电子电信—通信与信息系统]