摘要
本文对水印攻击方法进行了总结归类，并分析了各种攻击方法的思想，最后指出在设计水印算法的时候要针对可能会遇到的攻击来设计。
In this paper, the watermark attacking methods are summarized and classified, and the thought of each method is analysed, at last it points out that one should consider the possible attacking when he will design a watermark algorithm.
关键词
攻击
水印
attacking
watermark
