摘要
为保证网络上传输的多媒体数据的安全,对多媒体数据进行加密是常用的手段。文章介绍了直接加密的方法、选择性加密方法、将加密过程和压缩编码过程相结合的方法这三类对多媒体数据进行加密方法,对其优缺点进行了比较,讨论了其各自的适用环境。对基于混沌序列的多媒体加密技术的原理、特点、常用方法及存在的问题进行了阐述。最后讨论了目前多媒体数据加密算法有待解决的问题,并探讨了其可能的发展方向。
It is a common means to encrypt multimedia data for network transmission security. This article discusses three encryption methods namely direct encryption, selective encryption and synthesized encryption with the combination of encryption processes and compression-encoding processes, compares the advantages and disadvantages of these methods, points out respectively their adaptive circumstances. The article also discusses the principle, characteristics, common methodology and problems of chaotic-sequence-based multimedia data encryption technique. Finally, this article discusses some existing problems to be solved in current multimedia data encryption and possible developing orientation of the technique.
出处
《信息安全与通信保密》
2007年第2期105-107,共3页
Information Security and Communications Privacy
基金
湖南省教育科学"十一五"规划课题(XJK06CXJ012)
关键词
多媒体加密
选择加密
压缩编码
混沌加密
multimedia information encryption
selective encryption
video encoding
chaotic encryption
