摘要
离散小波变换在离散随机数字信号处理中占有重要地位,论文提出了一种基于离散小波变换和RC6的信息隐藏方法,通过一系列运算将明文图像隐藏于掩饰图像中。此方法独特之处是文中设计了一个相当于密码本的位置矩阵表,它很好地解决了通讯双方的密码同步问题。由于使用只有通讯双方才知道的位置矩阵表以及每次通讯时位置矩阵表要进行混洗和掩饰图像加以更换,因此实现了密码设计中加密算法可以公开,密钥必须保密的设计思想,同时实现了一次一密。
Discrite wavelet transform takes an important role in discrite random digital signal processing, this thesis demonstrates a information hidden method base on discrete wavelet transform and RC6, through a series of operations plain image will be hidden in cover image. This method is unique, because it using a position matrix table, the table＇s function is equivalent to cryptography code book（Key book）, tt successfully solved the problem of password synchronization on both sides in the communication. The cover images must be replaced in each communication and only thetow sides in the communication know the position matrix table and this table is shuffled in each communication. The merit of this design is that it realizes the idea, encryption algorithms can be public, but passwords must be remain confidential, and realizes one key one communication.
出处
《信息安全与通信保密》
2006年第10期153-155,共3页
Information Security and Communications Privacy
关键词
位置矩阵表
离散小波变换
信息隐藏
RC6
密钥
position matrix table
discrete wavelet transformation
information hidden
RC6
key
