Abstract: This paper studies the mechanism of saving image object data and method of obtaining their intact data in Word and PowerPoint files, sets the image of the files as the direct carrier of secret message and the file as secondary cover medium, and presents an image information hiding algorithm based on Least Significant Bit(LSB). Experimental results show that this algorithm has big information content, strong imperceptibility and anti-interference performance.

Key words: Word and PowerPoint document image, information hiding, Least Significant Bit(LSB) algorithm

摘要： 研究Word和PowerPoint文档中图像对象数据的保存机制和获取其完整图像数据的方法，以文档中图像对象作为秘密信息的直接载体，以Word和PowerPoint文档作为二次掩饰体，提出一种基于LSB的图像信息隐藏算法。实验结果表明，与单纯文档文字和数字图像作为信息隐藏载体的算法相比，该算法的隐藏信息量大，隐蔽性和抗干扰性强。

关键词: Word和PowerPoint文档图像, 信息隐藏, LSB算法

CLC Number: 

• TP309