摘要： 提出一种基于水印的自适应信息隐藏算法用于数据库的知识产权保护。算法根据数据库中原始数据的特点自适应地选择最佳嵌入方案，使水印的嵌入对数据库的影响降到最低，利用纠错编码技术和多数选举原理提高算法的稳健性。实验仿真结果表明，该算法满足不可见和盲检特性，对子集删除、增加、更新等常见攻击具有良好的抵抗能力。

关键词: 数据库水印, 知识产权保护, 鲁棒性, 不可见性, 自适应算法

Abstract: A watermark-based adaptive information hiding algorithm is proposed for the Intellectual Property Rights(IPR) protection for database. The algorithm adaptively chooses an optimal embedding scheme according to the characteristics of the data to make the degradation due to the watermark embedding to be smallest. And the error-correcting coding technology and the majority voting principle are employed to improve the algorithm’s robustness. Experimental results reveal that the algorithm can meet the requirements of invisibility and blind detection as well as good resistance to conventional attacks such as subset deleting, adding, and updating.

Key words: database watermark, Intellectual Property Rights(IPR) protection, robustness, invisibility, adaptive algorithm

中图分类号: 

• TP309