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Steganography

Nov 28, 2014

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Technology

 

  • 1. STEGANOGRAPHY

2. INTRODUCTION No one apartfrom theArt andA form ofsender and science of security intendedwriting hiddenthroughrecipient, messagesobscurity suspects theexistence of the message www.company.com 3. Stegans CoveredGraptos WritingETYMOLOGY 4. HISTORY OF STEGANOGRAPHYCurrent1st and 2ndWorld Wars440 B.C.www.company.com 5. Cryptography SteganographyWatermarkingEVOLUTION 6. ADVANTAGE OF STEGANOGRAPHYOVER CRYPTOGRAPHYMessages do notattract attention toProtects boththemselves messages and communicating partieswww.company.com 7. TYPES OF STEGANOGRAPHY Steganography In Text/Documents Steganography In Video Steganography In Audio Steganography In Images www.company.com 8. Carrier or Cover File Stego-MediumEmbedded or Payload SteganalysisSTEGANOGRAPHY TERMS 9. VIDEO 10. HOW IT WORKSwww.company.com 11. STEGANOGRAPHY STEPS SteganographyEncoding aDecode a messagemessage www.company.com 12. EmbeddedData MESSAGEPlain infoMESSAGE 13. ENCODINGStep 2 Prepare Encode Steganographic datacover data embedded data with cover dataStep1 Step 3 www.company.com 14. DECODING Step 2 Steganographic EmbeddedData Decode data Plain info obtained Step1 Step 3 www.company.com 15. STEGANALYSISArt and Science of detecting hiddenmessages Just discover Steganography Not deals with decrypting the datawww.company.com 16. Line Shift CodingWord Shift Coding Feature CodingLeast Significant Bit InsertionLow bit encoding Masking and FilteringSTEGANOGRAPHY TECHNIQUES 17. STEGANOGRAPHY USING LEAST SIGNIFICANT BITwww.company.com 18. PRACTICAL 19. ProgramImage files Audio filesVideo files Document filesBMP, JPG, Mp3, WAV 3gp, Mp4,PdfPNG, TGAMPEG-1, OpenPuff MPEG-2, VOB, SWF, FLV MP3Stego- Mp3 -- OpenStegoBMP, PNG -- -S-ToolsBMP, GIFWav- -StegFS - -- - Steganographic BMP, PNG,-- -Laboratory (VSL)JPG, TIFF PHP-Class PNG -- -StreamSteganographyList of some tools for Steganographywww.company.com 20. USAGE IN MODERN PRINTERSTiny yellow dots are added to each pagePrinter serial numbers date and time stamps are encoded on yellow dotsEXAMPLE: HP and Xerox color laser printers.www.company.com 21. ILLEGAL USAGE HACKERSTERRORISTSCRIMINALSwww.company.com 22. CONCLUSION 23. QUERIESwww.company.com