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Steganography
- 2. INTRODUCTION No one apart from the Art and A form of sender and science of security intended writing hidden through recipient, messages obscurity suspects the existence of the message www.company.com
- 3. Steganós • Covered Graptos • Writing ETYMOLOGY
- 4. HISTORY OF STEGANOGRAPHY Current 1st and 2nd World Wars 440 B.C. www.company.com
- 5. Cryptography Steganography Watermarking EVOLUTION
- 6. ADVANTAGE OF STEGANOGRAPHY OVER CRYPTOGRAPHY Messages do not attract attention to Protects both themselves messages and communicating parties www.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-Medium Embedded or Payload Steganalysis STEGANOGRAPHY TERMS
- 9. VIDEO
- 11. STEGANOGRAPHY STEPS Steganography Encoding a Decode a message message www.company.com
- 12. Embedded Data MESSAGE Plain info MESSAGE
- 13. ENCODING Step 2 • Prepare • Encode • Steganographic data cover data embedded data with cover data Step1 Step 3 www.company.com
- 14. DECODING Step 2 • Steganographic • Embedded Data • Decode data Plain info obtained Step1 Step 3 www.company.com
- 15. STEGANALYSIS Art and Science of detecting hidden messages Just discover Steganography Not deals with decrypting the data www.company.com
- 16. Line Shift Coding Word Shift Coding Feature Coding Least Significant Bit Insertion Low bit encoding Masking and Filtering STEGANOGRAPHY TECHNIQUES
- 17. STEGANOGRAPHY USING LEAST SIGNIFICANT BIT www.company.com
- 18. PRACTICAL
- 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 - - - StreamSteganography List of some tools for Steganography www.company.com
- 20. USAGE IN MODERN PRINTERS Tiny yellow dots are added to each page Printer serial numbers date and time stamps are encoded on yellow dots EXAMPLE: HP and Xerox color laser printers. www.company.com
- 21. ILLEGAL USAGE HACKERS TERRORISTS CRIMINALS www.company.com
- 22. CONCLUSION