隐写软件特征码与选位机制分析

Characteristic Code of Steganography Softwares & Selection Process

提取并还原隐藏的消息是隐写分析的最终目标。提取攻击通常建立在Kerchhoff前提下,但目前大部分隐写软件的工作机制是未知的,因此如何识别隐写对象所属的隐写软件、估计隐写软件的工作机制具有很强的现实意义。文章首先提出了如何获取隐写软件特征码的方法;其次研究如何分析已有隐写软件的选位机制;最后剖析了MASKER、data stash等18种隐写软件的特征码及其选位机制。研究结果对实现网络监控和隐藏信息提取具有一定的作用。

Extracting and recovering messages is the final goal of steganalysis. Extracting usually builds in the Kerchhoff, but selection process of many steganographic software are not known, so how to identify the software and guess selection process is very important. This paper presents a method to find the characteristic code and analysises the selection process of software, and finally gets explores 18 software characteristic code and selection processes. The result is helpful in monito- ring and controlling the net.