Secure Steganography in Binary Image
The core of steganographic research is security and capacity of hiding information.Batch steganographic model of binary image is presented,based on Kullback-Leibler divergence and Cachin'definition of steganographic security.Firstly,secure model of batch steganography is expressed,blocks relation of large-size of binary image is analysised.According and properties of binary image block of host image,secure module algorithm of embedding and extraction is proposed which separate binary image,group with chaotic mapping,and embedding secure data in blocks.The experimental results and analysis show that the model satisfies steganographic requirement for security.The research results are helpful for theory and application.