摘要
针对现有的数据库数字水印方案筛选数据项方法单一,由此造成水印容量低、鲁棒性差等问题,提出了基于超混沌变换的数据库零水印方案。该方案利用超混沌序列的伪随机性和遍历性等特点,筛选出待构水印的数据项;为最大限度的保护数据库系统,提出了数据库零水印方案及相应的检测方法。试验表明,本文的方案能够很好地抵抗子集增加、子集更改、子集删除等数据库水印攻击方法。
To resolve such problems as low simple filtering method for watermarked data items paper proposes a novel database zero-watermarking watermarking capacity and weak robustness caused by the in the existing database digital watermarking schemes, this algorithm based on hyper-chaos transform. In the proposed scheme, the data items are selected by hyper-chaos sequence with pseudo-randomness and ergodicity. In addi- tion, to protect database extremely, database zero-watermarking scheme and its related detecting algorithm are also designed. The experiments show that the proposed scheme can well withstand such database watermarking attacks as subset adding, subset modifying and subset deleting.
出处
《陕西理工学院学报（自然科学版）》
2013年第2期55-61,共7页
Journal of Shananxi University of Technology:Natural Science Edition
基金
福建省教育厅B类项目(jb11181)
关键词
数据库水印
零水印
二维超混沌
database watermarking
zero-watermarking
hyper-chaos
