基于载体信息值比较的信息隐藏方法  

The algorithm of information hiding based on comparing the value of post media

作　　者：王冰[1] 张仲选[1] 

机构地区：[1]西北大学计算机科学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2004年第4期389-393,共5页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(60271032)

摘　　要：目的　给出一种新的空间域类的信息隐藏方法。方法　将待隐藏的机密信息数据转化为二进制数,将载体信息数据依次分为数据对,调整每对数据的坐标位置,使二者大小的逻辑关系对应于机密信息数据的二进制的位,从而实现对机密信息的隐藏。结果　给出了在图像中隐藏汉字文档和在声音中隐藏图像的实验,并对隐藏性能作了分析和比较。结论　该算法原理简明,编程容易,信息嵌入与提取速度快。与其他空域类算法相比,鲁棒性有较大地提高。Aim A novel scheme for information hiding is proposed.Methods Firstly, the value of secret information is transferred into binary number.Then the value of post media is divided into the pair of value according to the order of coordinate position.Next, comparing the value and adjusting the coordinate position,to make sure that the logical relationship of the pair value is the same as the bit of secret information, so secret information is hided into post information.The paper gives the methods and steps for embedding information to and picking it out from host media.Results The experiments are taken which hide the text documents into an image and hides an image into sound file.The characteristics of the scheme are analyged and discussed.Conlusion The principle of the algorithm is simple, and it is also easy to program.Compared with other spatial field method for information hiding, the robustness of the algorithm is improved greatly.

关 键 词：信息隐藏 信息伪装 图像处理 信息安全 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]