The Research Of Information Hiding And It's Application

Information hiding is an interdisciplinary subject of the combination of mathematics,cryptography,information theory and computer application technique. With the rapid development of and great popularity of modern communication technology, especially with the wide application of Internet——the combination of communication technology and computer technology, information share, transmission become more frequent and wide. It has brought us great convenience and a great number of information security problems as well. Such as information theft, copyright protection of multimedia data and image authentication. But traditional security protection way——cryptography can't resolve these problems really. Then the information hiding was proposed. It had been proved in practice that information hiding was the effective means to resolve those problems in information security. So information hiding becomes a research hot-spot in recent years.In this paper, we discuss mainly about the information hiding based on digital image. We propose a new algorithm in this paper which combines the discrete cosine transform (DCT) with the discrete wavelet transform (DWT) organically to deal with the digital image, adjust the strength factor of information hiding dynamically according to the human visual model, and eventually embed the digital audio signal which was scrambled by the binary sequences generated by the...