A new approach to covert communication via PDF files

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Accession number:20093912346590

Title: A new approach to covert communication via PDF files Authors:Lee, I-Shi (1); Tsai, Wen-Hsiang (1)

Author affiliation:(1) Department of Computer Science, National Chiao Tung University, Hsinchu, 30010, Taiwan; (2) Department of Computer Science and Information Engineering, Asia University, Taichung, 41354, Taiwan; (3) Department of Management

Information, Technology and Science Institute of Northern Taiwan, Taipei, Taiwan

Corresponding author:Tsai, W.-H.

(whtsai@cis.nctu.edu.tw)

Source title:Signal Processing

Abbreviated source title:Signal Process Volume:90

Issue:2

Issue date:February 2010 Publication year:2010 Pages:557-565

Language:English ISSN:01651684 CODEN:SPRODR

Document type:Journal article (JA)

Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands Abstract:A new covert communication method via PDF files is

proposed. A secret message, after being encoded by a special ASCII code and embedded at between-word and between-character

locations in the text of a PDF file, becomes invisible in the window of a common PDF reader, creating a steganographic effect for secret transmission through the PDF file. Experimental results show the feasibility of the proposed method. © 2009 Elsevier B.V. All rights reserved.

Number of references:14 Main heading:Character sets

Controlled terms:Communication - Probability distributions Uncontrolled terms:ASCII codes - Covert communication - Data hiding - Invisible codes - PDF files and readers

Classification code:716 Telecommunication; Radar, Radio and

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Television - 722.2 Computer Peripheral Equipment - 922.1 Probability Theory

DOI:10.1016/j.sigpro.2009.07.022 Database:Compendex