Steganography and steganalysis base on JPEG format

Digital steganography and steganalysis are significant parts of information hiding technology.It is important to study the steganography and steganalysis on JPEG format,which is the most popular image using in steganography.Firstly,by analyzing the structure of JPEG standard deeply,a algorithm of hiding communication based on JPEG format is proposed;secondly,a relevant algorithm of extracting attack is provided;finally,an approximate real time system for extracting hiding information is constructed.The system distilled much information from 50 thousands network images successfully and attacked 11 kinds of steganography software efficiently.