Steganography in Chinese text

Steganography is an important research direction of information security, which mainly research how to embed secret information into carriers, in order to achieve the objectives of secure communication. In this paper, a novel Chinese text steganography based on substitution of different forms Chinese characters is proposed. We propose two embedding methods named SSM and HESM. SSM simply substitute some characters to embed the hidden message, which has high embedding rate. In HESM, we first split the hidden message into segments with the same size, and then embed the hidden message segment by segment into the carrier text. The segment length can be adjusted according to the application requirements. The highest embedding rate of the our steganographic algorithm is about 2%. In addition, our algorithm don't change the content of the carrier text, and it can resist traditional attacking methods such as re-layout, and so on.