一种安全的无载体纹理合成信息隐藏方案  

A SECURE COVERLESS TEXTURE SYNTHESIS INFORMATION HIDING SCHEME

作　　者：杜耀刚[1,2] 王泽豪 赵耿[1,2] 张艳硕[2] Du Yaogang;Wang Zehao;Zhao Geng;Zhang Yanshuo(School of Communication Engineering, Xidian University, Xi'an 710071, Shaanxi, China;Beijing Electronic Science and Technology Institute, Beijing 100070, China)

机构地区：[1]西安电子科技大学通信工程学院,陕西西安710071 [2]北京电子科技学院,北京100070

出　　处：《计算机应用与软件》2019年第6期287-291,321,共6页Computer Applications and Software

基　　金：国家自然科学基金面上项目(61772047);国家重点研发计划基金项目(2017YFB0801803)

摘　　要：为了有效抵御Zhou等[8]针对Wu等[7]提出的无载体纹理合成信息隐藏方案的攻击,设计出一种基于有限整数网格上拟仿射变换(QATLIG)的纹理合成无载体信息隐藏方案。该方案通过在纹理合成过程中嵌入干扰纹理块,来抵御文献[8]提出的攻击。其中,干扰纹理块的具体位置,由样本纹理源补丁块的坐标通过QATLIG变换而得。同时该方案将QATLIG变换系数纳入密钥中。分析及实验表明,该方案保持了文献[7]方案的生成纹理图像质量,信息隐藏容量损失极小(约1.46%~7.11%),隐藏的信息被暴力破解的概率极低(远小于10-5),可有效抵御文献[8]的攻击方案。In order to effectively resist Zhou H et al.s attack on the coverless texture synthesis information hiding scheme proposed by Wu et al.,we designed a coverless texture synthesis information hiding scheme based on quasi-affine transformation on limited integer grids(QATLIG).This scheme defended against attacks by Zhou H et al.by embedding interference texture blocks in the texture synthesis process.The specific location of the interference texture block was obtained by transforming the coordinates of the sample texture source patch block by QATLIG,and the scheme incorporated the QATLIG transform coefficient into the secret key.Analysis and experiments show that the scheme maintains the texture image quality generated by Wu et al.,and the information hiding capacity loss is extremely small(about 1.46%~7.11%).The probability of hidden information being violently cracked is extremely low(far less than 10-5),and it can effectively resist the attack scheme of Zhou H et al.

关 键 词：信息隐藏 纹理合成 无载体 有限整数网格拟仿射变换 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]