摘要
提出了采用常量编码防篡改的两种动态图混合水印结构方案,即采用基数循环链表分别与二叉树结构和PPCT结构相结合进行编码的方法,提高动态图水印的鲁棒性。水印信息的产生基于二次剩余理论和Rabin密码体制,该算法在多个水印与宿主程序之间建立功能性的依赖关系,对真实水印起到了防篡改的作用,增加了攻击者的攻击难度,从而可对该类水印进行有效的保护。
This paper puts forward a new scheme which adopts tamper-proofing combined watermark. It employs Radix-K linklist to integrate binary tree and PPCT respectively in order to improve the robustness. The watermark information is based on Quadratic Residue theory and Rabin cipher system. The functionality dependency relationship is built between multiple watermark and host program. The true watermarks are protected against tampering. It increases the attacking difficulty, the watermark can be efficiently protected.
出处
《青岛大学学报（工程技术版）》
CAS
2007年第3期38-43,共6页
Journal of Qingdao University(Engineering & Technology Edition)
关键词
二次剩余
软件水印
常量编码
二叉树基数K编码
PPCT结构
Quadratic Residue
software watermark
constant encode
binary tree-based radix K encode
PPCT structure
