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Research On Text Based Information Hiding Technique

Posted on:2008-06-25Degree:MasterType:Thesis
Country:ChinaCandidate:L YinFull Text:PDF
GTID:2178360215966851Subject:Computer technology
Abstract/Summary:PDF Full Text Request
Information hiding has become a hot topic in nowadays information security technology, especially steganography and digital watermarking became two important research directions in solving copyright and other problems. Previously, researchers have been only interested in image based digital fingerprinting where secret information is hidden in images, and text have not been the main target of hiding information. Meanwhile, all kinds of documents are playing an important role in the daily works, research on text based information hiding techniques will have a bright future.Because character codes have no redundancy, in the usual information hiding applied to digital documents, secret messages are always embedded in the layout information such as the space between lines or characters. This paper describes methods for hiding information not only by using layout information but also language paraphrasing that preserves the meaning. Meanwhile, we give some practical ways to solving information hiding applications in Word files. With the development of Internet, online copyright becomes a serious problem in information security, so we propose the information hiding methods using HTML and XML.This paper also discuss some key techniques such as robustness, attack analysis in the information theory. As two major subjects in information security, cryptography and information hiding are also compared and analyzed in the paper.
Keywords/Search Tags:Information Hiding, Steganography, Digital Watermarking, documents, Robustness, attack analysis
PDF Full Text Request
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