基于导入函数引用次数的扩频软件水印方案

在研究扩频软件水印基本原理的基础上,提出一种新的扩频软件水印方案.该方案将软件导入函数引用次数作为软件的特征矢量,通过修改矢量各分量值将水印信号分散隐藏在软件整个代码内,并用相关性检测模型检测水印.给出水印信号的嵌入和检测模型,并对方案的抗攻击性和鲁棒性进行讨论.结果表明,与现有软件水印相比,该方案隐蔽性较高,实现应用比较简单,且能够有效抵抗多种常见类型的攻击.

A Spread Spectrum Software Watermarking Scheme Based on the Import Functions

Based on the basic idea of spread spectrum software watermarking,a new spread spectrum software watermarking scheme is proposed.The scheme takes the cross reference count of import function as the software characteristic vector,and spreads watermark over the whole software instruction code by modifying vector,and detects watermark by applying signal correlation detection approach.The models of watermark embedding and detecting are given,and their robustness and security are analyzed.The results show that compared with other schemes of software watermarking,this scheme has great information imperceptibility and is easy to implement and apply.In addition,it can be immune to most known attacks.