Stegnography Techince

3. Content
1.What is stegenograhy
2.Stegnograpgy terms
3.Stegnogarphy in modern days
4.Stegnography carrier files
5.Types of stegnography
6.Stegnography use
7.Stegnography tools
8.stegnolysis

4. What is steganography ?
Steganography
From the greek word STEGANOS meaning “covered
And greek word GRAPHIE meaning “writing”
 Steganography
is the branch of science
.it is used for writing hidden messages in
such a way that no one can able to read
the message only the sender and receiver
can read.

5. Steganography Terms

Carrier File – A file which has hidden
information inside of it.

Steganalysis – The process of
detecting hidden information inside
of a file.

Stego-Medium – The medium in
which the information is hidden.

6. Steganography – Modern Day
Carrier File
Carrier File with
Hidden Message
Steganography in the modern day sense of the word usually refers to
information or a file that has
been concealed inside a digital Picture, Video or Audio file

7. Steganography – Carrier
Files
Steganography Carrier Files






Bmp - bitmap digital images
Jpeg - Joint Photographic Experts Group
Gif - Graphics Interchange Format
Wav- Waveform Audio File Format
Mp3- music file
Amongst others…

8. TYPE OF
STEGNOGRAPHY

SECRET MESSAGE IS HIDDEN IN
DIFFERENT FORM..
Steganography In Images
 Steganography In Audio
 Steganography In Video
 Steganography In Documents


9. A steganograhy System

10. 
The U.S. government is concerned about the use of
Steganography.

Common uses in include the disguising of corporate
intelligence.

It’s possible that terrorist cells may use it to secretly
communicate information.

It’s also a very good Anti-forensics mechanism to mitigate
the effectiveness of a forensics investigation
10

11. What is stegnograpy tool ?

With the help of stenography tool .we
can see the hidden message inside the
picture ,audio,documents etc.

12. Steganography Tools
Steganography Tools
 Steganos
 S-Tools (GIF, JPEG)
 StegHide (WAV, BMP)
 Invisible Secrets (JPEG)
 JPHide
 Camouflage
 Hiderman
 Many others…

13. Steganalysis
Identification of hidden files

14. Steganalysis

By identifying the existence of a hidden
message, perhaps we can identify the
tools used to hide it.

If we identify the tool, perhaps we can
use that tool to extract the original
message.