03-05-2012, 11:53 AM
Steganography In Images
Steganography_in_Images.ppt (Size: 256 KB / Downloads: 140)
STEGANOGRAPHY DEFINED
Greek for “covered writing”
“The art and science of writing hidden messages in such a way that no one apart from the intended recipient even knows that a message has been sent.”
DIGITAL APPROACHES
Today, it often exists within digital formats
It makes use of seemingly innocent cover files such as text, audio, and image files
The embedded message may be anything that can be encoded in binary
REASONS FOR USING DIGITAL IMAGES
It is the most widely used medium being used today
Takes advantage of our limited visual perception of colors
This field is expected to continually grow as computer graphics power also grows
Many programs are available to apply steganography
LSB - Uses
Storing passwords and/or other confidential information
Covert communication of sensitive data
Speculated uses in terrorist activities
Being widely used to hide and/or transfer illegal content
Steganography_in_Images.ppt (Size: 256 KB / Downloads: 140)
STEGANOGRAPHY DEFINED
Greek for “covered writing”
“The art and science of writing hidden messages in such a way that no one apart from the intended recipient even knows that a message has been sent.”
DIGITAL APPROACHES
Today, it often exists within digital formats
It makes use of seemingly innocent cover files such as text, audio, and image files
The embedded message may be anything that can be encoded in binary
REASONS FOR USING DIGITAL IMAGES
It is the most widely used medium being used today
Takes advantage of our limited visual perception of colors
This field is expected to continually grow as computer graphics power also grows
Many programs are available to apply steganography
LSB - Uses
Storing passwords and/or other confidential information
Covert communication of sensitive data
Speculated uses in terrorist activities
Being widely used to hide and/or transfer illegal content