digital steganography & steganalysis
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digital steganography & steganalysis. Yeuan Kuen Lee May 11, 2012. http://iservice.libertytimes.com.tw/liveNews/news.php?no=634472. http://edition.cnn.com/2012/04/30/world/al-qaeda-documents-future/. - PowerPoint PPT PresentationTRANSCRIPT
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digital steganography & steganalysis
Yeuan Kuen LeeMay 11, 2012
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http://iservice.libertytimes.com.tw/liveNews/news.php?no=634472
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http://edition.cnn.com/2012/04/30/world/al-qaeda-documents-future/
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http://edition.cnn.com/video/?/video/world/2012/04/30/pkg-robertson-al-qaeda-documents-combined.cnn
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http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=1208318
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http://www.usatoday.com/tech/news/2001-02-05-binladen.htm
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technical terms in steganography
• photograph, geography, biography…• cryptography
crypto + graphy ( secret + writing ) cryptography = encryption + decryptioncryptology = cryptography + cryptanalysis
• steganographystegano + graphy ( cover + writing )Steganography = embedding + extractionsteganology = steganography + steganalysis
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encryptionplaintext ciphertext
encryption-key
decryptionplaintext ciphertext
decryption-key
communication channelcommunication channel
cryptanalysis
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http://hk.epochtimes.com/b5/12/3/30/155158.htm
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stegosaur