一种基于GIF图像的无载体隐蔽通信方法

摘要

提出了一种基于GIF(Graphics Interchange Format)图像的无载体(Coverless)隐蔽通信方法.由于没有修改载体的任何信息,它继承了无载体隐蔽通信的抗检测优势.与现有的图像无载体隐蔽通信相比,所提方法提出了一种使用图像多个维度拓展模块属性的方式,具有更大的嵌入率;理论分析中结合了载体图库,在实际应用中能够适应不同载体图库.实验证明,所提方法具有适应载体图库的特性和较高的嵌入率,也说明它能够很好地抵抗对GIF图像的常见攻击.%This paper proposes a coverless covert communication method based on GIF (Graphics Interchange Format) image. Since there is no modification to any information of the bearer, it inherits the anti-detection advantage of coverless covert communication. Compared with existing image coverless covert communication, the proposed method has a larger embedding rate, because it proposes a way to use multidimensional extension attributes of the image. At the same time, since the cover library is combined with the theoretical analysis, the proposed method can adapt to different cover libraries in the actual use of the scene. Finally, the experiments show that the proposed method has the above characteristics, and also show it can resist the common attacks on GIF images.