05-05-2012, 01:39 PM
steganography
jitendriya dash.ppt (Size: 4.36 MB / Downloads: 74)
DEFINITION
The definition of Steganography is literally, covered writing.
The idea behind Steganography is to pass a hidden message within another seemingly harmless message so that no one determines that hidden communication is taking place.
So, Steganography can be called The art of hiding information .
Cryptography VS. Steganography
Cryptography:
the message itself is being encrypted or coded such that, everybody knows the existence of the secret message, but without knowing the proper method of decryption, none can decrypt it.
Steganography:
the message is being hidden without any change of its form such that, unless the carrier object is being analyzed, the Steganography secret message can’t be found out.
Steganography in Digital Images:-
There are many ways to hide information in digital images. But these methods are basic methods for hiding information.
Least significant bit insertion
Algorithms and transformations
Conclusion
Steganography is an emerging method which provides more security than other conventional methods. So it is definitely going to develop with vast uses in various fields.
jitendriya dash.ppt (Size: 4.36 MB / Downloads: 74)
DEFINITION
The definition of Steganography is literally, covered writing.
The idea behind Steganography is to pass a hidden message within another seemingly harmless message so that no one determines that hidden communication is taking place.
So, Steganography can be called The art of hiding information .
Cryptography VS. Steganography
Cryptography:
the message itself is being encrypted or coded such that, everybody knows the existence of the secret message, but without knowing the proper method of decryption, none can decrypt it.
Steganography:
the message is being hidden without any change of its form such that, unless the carrier object is being analyzed, the Steganography secret message can’t be found out.
Steganography in Digital Images:-
There are many ways to hide information in digital images. But these methods are basic methods for hiding information.
Least significant bit insertion
Algorithms and transformations
Conclusion
Steganography is an emerging method which provides more security than other conventional methods. So it is definitely going to develop with vast uses in various fields.