基于噪声抽取的信息隐藏方法研究

Study of information hiding algorithm based on noise extraction

信息隐藏技术是在只具平凡意义的载体中隐藏需要进行保密通信的敏感信息 ,只要人类感觉系统无法察觉由此所引起的载体变化 ,则此通信中对外表现的只是载体的属性 ,除了通信双方之外的任何第三方并不知道在此平凡载体通信过程中存在着隐蔽信道 ,由此以减少敏感信息在信道传输过程中受到攻击的可能性 ,因此本文认为若将信息隐藏与加密技术结合使用则可以较为完善地解决高强度的保密通信问题。文中利用所提出的基于噪声抽取信息隐藏方法实现了上述方案 ,算法设计过程中主要考虑了图像质量、全比特恢复能力、保密性、反检测能力等方面的因素 。

Information hiding, a form of information processing, embeds data into trivial media for the purpose of concealing the secret communication. Provided that the change due to the above_mentioned process cannot to be detected by human vision system, only the two parties of communication know the covered channel within the traffic, thus it arouses less suspicion. In this paper the authors believe that information hiding combined with encryption techniques can provide a perfect scheme for high strength secure communications. Utilizing a new information hiding algorithm based on noise extraction, the above_mentioned scheme has been realized, to design the algorithm the factors including image quality,ability of whole bits restoration,security,performance of anti_detection have been taken into account. Finally, the experiment and analysis of anti_detection are given.