Steganography presentation including Data Hiding,image hiding,watermarking

1. By Harsh Madhani Computer Engineering Steganography

2. cryptography κρυπό ς hidden γραφία writing A secret manner of writing, … Generally, the art of writing or solving ciphers. — Oxford English Dictionary

3. cryptology κρυπός hidden λογια speaking 1967 D. Kahn, Codebreakers p. xvi, Cryptology is the science that embraces cryptography and cryptanalysis, but the term ‘cryptology’ sometimes loosely designates the entire dual field of both rendering signals secure and extracting information from them. — Oxford English Dictionary

4. Steganography στεγανός covered γραφία writing The art of secret (hidden) writing

5. STEGANOGRAPHY PATS A HORNY EGG

18. UV Watermarking

19. Machine ID codes in laser printers See http://www.eff.org/Privacy/printers/

20. Machine ID codes in laser printers

21. Machine ID codes in laser printers

22. Machine ID codes in laser printers