A model of document information hiding was proposed aimed at the problem of information security transmission. Several document information hiding algorithms are brought forward, based on analysis of PDF document structure. It is proved that the algorithm has attained the robust and concealment well.
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谷今杰[] 程玉柱[]. 基于PDF文本的信息隐藏技术[J]. 科学技术与工程, 2007, (1): 135-138. GU Jin-jie, CHENG Yu-zhu. Technology of Information Hiding Based on PDF Text Document[J]. Science Technology and Engineering,2007,(1):135-138.