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计算机工程 ›› 2008, Vol. 34 ›› Issue (21): 159-160,. doi: 10.3969/j.issn.1000-3428.2008.21.057

• 安全技术 • 上一篇    下一篇

新的文本隐写分析方法

金 烨,眭新光   

  1. (信号盲处理国家重点实验室,成都 610041)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-11-05 发布日期:2008-11-05

New Text Steganalysis Method

JIN Ye, SUI Xin-guang   

  1. (National Key Lab of Blind Signals Processing, Chengdu 610041)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-11-05 Published:2008-11-05

摘要: 通过对自然文本的建模和特征统计发现,在自然文本中,文本单词平均长度与该文本词汇表单词的平均长度有较大差距,在通过构造法隐藏消息的隐密文本中,该差距较小。文章对隐密文本与自然文本间的差异进行分析,提出一种新的文本隐写分析算法。实验结果表明,对通过构造法隐藏消息的文本,该算法具有较高的有效性和可靠性。

关键词: 信息隐藏, 隐写分析, 文本, 词汇表, 平均长度

Abstract: This paper analyses the models of natural texts, studies the statistical characteristics and finds that there is great distance between the average length of words in natural texts and that in the vocabulary of the same ones. But this distance is small in stego-texts created by the mimic method. This paper analyzes the difference and puts forward a new detecting algorithm of text document information hiding. Experimental result shows that the detecting algorithm can achieve a high degree of detecting reliability to these texts hiding information by the mimic.

Key words: information hiding, steganalysis, text, vocabulary, average length

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