摘要
基于视频具有数据量大、实时性要求高等特点,在一维耦合映像格子模型的基础上,对耦合格点结构和动力学模型这两个方面进行了改进,在系统结构上采用一维链加二维网格再加上一维链的组合模型来构造驱动和响应系统及多级加密的方案。实验结果表明,系统在增强密钥序列复杂度的同时也提高了加密效率,使得系统的抗破译能力大大加强。
As for video having the characteristic ofa big data flow and real-time, on the basis ofthe one-dimension coupled map lattices model, both the structure of coupled lattices and the dynamics model are improved. And it adopts the combined model such as one-dimension chain plus two-dimension lattices plus one-dimension chain to construct drive-response system and multilevel-encryption scheme. The trial results show that this not only strengthens the complexity of the encryption sequences, but also enhances the encrypted efficiency, which makes the secure communication system have high security and strengthened non-cracked ability.
出处
《计算机工程与设计》
CSCD
北大核心
2008年第20期5166-5170,共5页
Computer Engineering and Design
关键词
时空混沌
视频流
加密
耦合映像格子
保密通信
spatiotemporal chaos
video stream
encryption
coupled map lattices
secure communication
