基于Word文档的数据隐藏方法

DATA HIDING METHOD BASED ON WORD DOCUMENT

在分析当前数据隐藏与恢复相关技术研究基础上,参照微软官方最新公布的复合文档存储规范,从利用载体Word文档现有空间中未真正使用部分和适度扩展新空间两条思路出发,设计一种利用Word文档作载体隐藏秘密信息的解决方案,包括在文字、各种嵌入式对象及其相应控制结构数据中隐藏信息。实践表明,隐藏数据后的载体文档可以被正常拷贝和使用电子邮件传送,根据需要隐藏的信息随机选择使用该方案,被隐藏信息更不容易被侦测出来,被二次编辑后被隐藏信息一般不会被破坏,鲁棒性不错,具有一定的实用价值。

Based on analysing the researches of current correlated technologies of data hiding and recovery and referring to the latest offi- cially released compound document storage specification of Microsoft, we design a solution to hide the secret information by using the Word documents as the carrier, including hiding information in texts, all types of embedded objects and the corresponding control structure data. It is inspired by two thoughts： the making use of existing actually unused portion space in Word document, and properly expanding the new space. Practice shows that the carrier document with the data hidden can be copied as usual and cab be sent by e-mail. The random selection and use of this solution according to the information needed to be hidden makes the hidden information more difficult to be detected. The hid- den information usually cannot be destroyed after the secondary editing. The robustness of this solution is good, therefore the solution has certain practical value.