一种水印信息可恢复的软件水印方案  

Watermark recoverable software watermarking scheme

作　　者：张迪[1] 周清雷[1] 

机构地区：[1]郑州大学信息工程学院,郑州450001

出　　处：《计算机应用研究》2014年第11期3482-3485,3489,共5页Application Research of Computers

基　　金：国家自然科学基金资助项目(61250007)

摘　　要：针对动态图水印数据率低、水印信息遭到攻击后不易恢复的问题,提出了一种水印信息可恢复的软件水印方案。该方案结合了动态图水印和线程水印技术。为了使水印信息可恢复,在水印的嵌入过程中,利用设计的一种特殊的动态图结构表示水印信息,并在程序的线程关系中隐藏动态图的纠错码信息。提取水印图的过程中一旦检测到水印图遭到窜改,提取隐藏在程序执行时产生的线程关系中的纠错码信息,恢复被窜改的水印信息。理论分析和实验表明,该方案提高了水印的数据率,降低了程序负载,增强了水印的抗攻击性,并能在一定程度上恢复被窜改的水印信息。This paper proposed a watermark recoverable software watermarking scheme towards the problem of low data rate of dynamic graph encoding and the difficulties of recovering watermark after the attack.This scheme combined the dynamic graph watermarking technology and the thread-based watermarking technology.In the process of embedding,this scheme took advan-tage of a special designed dynamic graph structure,it used the structure to encode the watermark and in order to recover the watermark,hided error-correcting code into the thread relations.In the process of extracting,once detecting the tamper of the watermark graph,the scheme extractd the error-correcting code hidden in the relations between threads to recover the water-mark been tampered.Theoretical analysis and experimental results show that the scheme improves the date rate of watermark, reduces the program load and enhances the watermarking resistance.In addition,the watermark been tampered can be recov-ered to some extent.

关 键 词：软件水印 水印恢复 TDPPCT结构 线程关系 汉明纠错码 鲁棒性 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]