2. Stegnography
History
Information comes from the Greek
Word.
It means covered or secret writing.
Stegno
Steganography is the process of
hiding information which can be text,
image or video inside a cover
image.
Security
The secret information is hidden in a
way that is not visible to the human
eye.
3. The cryptography mechanism uses the
scramble messages and they cannot be
understood if they get intercepted and the
techniques or mechanisms.
Steganography work on hiding the
messages, from this we can say that the
encrypted messages may get the doubt
while the invisible messages won’t get it.
Steganography Vs
Cryptography:
4. Types of the Steganography:
Your Text
Example Text :
Get a modern
PowerPoint
Presentation that
is beautifully
designed.
Your Text
Example Text :
Get a modern
PowerPoint
Presentation that
is beautifully
designed.
Your Text
Example Text :
Get a modern
PowerPoint
Presentation that
is beautifully
designed.
Messages in still images
Messages in text
Messages in audio
Messages in video
5. Types
Messages in still images:
The messages in the still images are a very popular tool in outguess.
Messages in audio:
The messages in the audio information in the layer III of the encoding process of
MP3 file and the messages in the audio are sent along the noise.
Messages in a video:
The messages in the video integrating data into the multimedia have got the
attention very slowly. The video files are the best carrier files as they have more
irrelevant bits.
6. Steps of hiding image
• Initially start Stool and windows explorer by availing the drag and drop interface for
the collection of programs.
• After this, drag the image that you are using as a carrier file from the explorer and
drop it on the actions tool in the Stool.
• In the next step, drag and drop the information file on the carrier file.
• After completing the above steps, give the passphrase and step by step procedure if
needed, send all these to the receiver also.
• Now, the hidden file is ready and the receiver has to press on the “reveal” button to
get the data.
8. Applications
• Having confidential communication and
storage of secret data.
• Giving protection to the data alteration
• Providing a control system for better
distribution of digital content.
• It is hugely used in the media database
systems
9. Advantages
• The steganography is for protecting the data, such as in
the field of media where the copywriting ensures the
authentication.
• The steganography can be used by the intelligence
agencies for transmitting their secret information.
10. By using the steganography mechanism many
terrorist and have anti-humanist activities have
occurred.
Disadvantage
