基于非参数统计的软件水印实现方案

软件水印虽然早在上世纪就提出来了，但一直进展不大，至今还没有商用的案例。在失体介绍软件水印后，提出了一种新的软件水印方案。新方案在水印嵌入时充分利用动态软件水印的PPCT结构，并结合统计数据和利用统计方法，采用秩和检验的方法进行水印检测。最后通过实验进行了验证，结果表明新方案具有较强的健壮性，能抵御多种常见的攻击。

A Software Watering Scheme Base on Non-Parametric Statistics

Software watermarking was brought up in the last century, but it has not processed with big step, and it has no application in business yet. This article introduces software watermarking generally at first, then works out a new software watermarking scheme. In this scheme, The technique of the dynamic software watermarking is full used while the watermarking is embedded, unite with mathematic data and statistic method, the watermarking is checked up by Rank sum test. And we prove it by experiments, the experimental result shows that this scheme is very robust and is immune to most known attacks.