The capacity of arithmetic compression based text steganography method

Application of the lossless compression method to hide texts is considered as a novel trend in research projects. Evaluation of the proposed methods in the field of steganography reflects a variety of approaches to create covert communication via text files. The extensiveness of steganographic issues and the presence of a huge variety of approaches make it difficult to precisely compare and evaluate these methods. Therefore, in this article a new steganography method that uses a statistical compression technique called `arithmetic coding´, will be presented. In addition, the comparison of this method capacity with other methods will be explained. The arithmetic coding technique that has very high compression rates, shall guarantee even a higher growth capacity and higher security compared to its similar techniques. Meanwhile, the secret messages were not revealed through rewriting or syntax/semantic checking and compared with similar methods, increased the capacity by up to 68.9%, and compared with other methods; this method improved the capacity of fifteen times.