Office Word文档溯源方法研究

基于最广泛使用的Microsoft Office Word文件结构格式分析,集中关注编辑过程还原主题,立足document.xml与core.xml文件内容,挖掘OOXML格式中独特的RI值变化规则,进而完成文件来源的取证分析,并通过自主研发的软件使得分析工作智能化工具化。电子数据取证实践证明,所述方法准确高效。

Design and implementation of digital content metadata system

Today's multimedia services are far beyond just the voice and data services:they have been diversified tremendously after fueled by the advancement of network infrastructures as well as the sudden surge of multimedia data itself.Currently,researches on metadata insertion,management and transfer keep going very well in order to provide a variety of services to users.In this paper,we propose the design and implementation methods of digital contents metadata system for insertion,storage and retrieval of metadata.The performance evaluation shows that the proposed method performs better than the existing method.

Microsoft Office文档数据隐藏与检测

对Office文档进行分析是常遇到的数字取证工作之一,目前针对复合文档格式的Office文档分析技术相对成熟,但对如今广泛使用的OOXML格式的Office文档取证方法研究较少。针对当前广大办公用户普遍使用的Microsoft Office 2010电子文档办公套件,从此类文档的OOXML文档格式结构出发,研究现有取证工具难以检测的基于结构特征的数据隐藏方法,并通过取证实践提出了有效快捷的检测方法。