基于自定义约束的关系数据库水印算法

Relational Database Watermarking Algorithm Based on Self-definited Constration

针对现有水印算法的不足,提出了在数值型属性中嵌入水印的一种新方法.算法先筛选出满足嵌入水印信息的属性,将它们划分成若干个等大的子集,然后对每个子集根据自定义的误差允许范围对子集进行筛选,确定水印嵌入的位置及水印信息0或者1.实验证明该算法具有很好的鲁棒性.

A new method of digital watermarking information was proposed for inadequacy of existing watermarking methods.This method firstly filtered those properties which can be embedded watermark information,then divided them into several large subsets of the same size,and filtered each subset according to the custom error allowed range.Finally,it determined the location of the watermark and watermark information of 0 or 1.Experiments proved that this method provides good robustness.