以图像为掩护媒体的阈下信道抗干扰性

The Capability of Anti-jamming for Subliminal Channel Using Images as Cover-media

为了增强秘密信息传输的安全性，利用阈下信道进行通信是一种可行的方法。提出了阈下信道的通信系统模型、阈下信道的分类；分析了阈下信道抗干扰性应研究的内容。并以图像为例研究了其作为阈下信道的信息载体的抗干扰性，提出了一种基于行列式计算思想的图像置乱算法，研究表明该算法用于秘密信息的嵌入，其抗干扰性较好。

Subliminal channel techniques have recently become important in information security areas. The model of communication system using subliminal channel is presented in this paper, and the subliminal channel is classified. The content of anti-jamming that should be researched on subliminal channel is analyzed.The capacity of anti-jamming for subliminal channel is disucussed using images as cover-media.A new image scrambling algorithm based on the method of determinant computing is presented. The experimental results show that the capacity of anti-jamming is good for using this algorithm for embedding secret messages in images.