Steganography

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Steganography

  1. 1. STEGANOGRAPHY
  2. 2. INTRODUCTION No one apart from the Art and A form of sender and science of security intendedwriting hidden through recipient, messages obscurity suspects the existence of the message www.company.com
  3. 3. Steganós • CoveredGraptos • WritingETYMOLOGY
  4. 4. HISTORY OF STEGANOGRAPHY Current 1st and 2nd World Wars 440 B.C. www.company.com
  5. 5. Cryptography SteganographyWatermarking EVOLUTION
  6. 6. ADVANTAGE OF STEGANOGRAPHY OVER CRYPTOGRAPHY Messages do not attract attention to Protects both themselves messages and communicating parties www.company.com
  7. 7. TYPES OF STEGANOGRAPHY Steganography In Text/Documents Steganography In Video Steganography In Audio Steganography In Images www.company.com
  8. 8. Carrier or Cover File Stego-Medium Embedded or Payload SteganalysisSTEGANOGRAPHY TERMS
  9. 9. VIDEO
  10. 10. HOW IT WORKSwww.company.com
  11. 11. STEGANOGRAPHY STEPS Steganography Encoding a Decode a message message www.company.com
  12. 12. Embedded Data MESSAGEPlain info MESSAGE
  13. 13. ENCODING Step 2• Prepare • Encode • Steganographic data cover data embedded data with cover data Step1 Step 3 www.company.com
  14. 14. DECODING Step 2• Steganographic • Embedded Data • Decode data Plain info obtained Step1 Step 3 www.company.com
  15. 15. STEGANALYSISArt and Science of detecting hidden messages Just discover Steganography Not deals with decrypting the datawww.company.com
  16. 16. Line Shift Coding Word Shift Coding Feature Coding Least Significant Bit Insertion Low bit encoding Masking and FilteringSTEGANOGRAPHY TECHNIQUES
  17. 17. STEGANOGRAPHY USING LEAST SIGNIFICANT BITwww.company.com
  18. 18. PRACTICAL
  19. 19. Program Image files Audio files Video files Document files BMP, JPG, Mp3, WAV 3gp, Mp4, Pdf PNG, TGA MPEG-1, OpenPuff MPEG-2, VOB, SWF, FLV MP3Stego - Mp3 - - OpenStego BMP, PNG - - - S-Tools BMP, GIF Wav - - StegFS - - - - Steganographic BMP, PNG, - - - Laboratory (VSL) JPG, TIFF PHP-Class PNG - - -StreamSteganographyList of some tools for Steganography www.company.com
  20. 20. USAGE IN MODERN PRINTERS Tiny 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. 21. ILLEGAL USAGE HACKERS TERRORISTS CRIMINALSwww.company.com
  22. 22. CONCLUSION
  23. 23. QUERIESwww.company.com

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