Essay specific features
April 17, 2016
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3 / 569
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Discovering and rendering useless such covert messages is a new art form known as steganalysis. Stego object is the object with hidden data.
To discover such covert messages we are using two types of attacks generally known as known-cover attack and stego only attack.
In known-cover attack both the original and stego object both are available...
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Thus the difference between the two objects (images) can be calculated by image difference algorithm (difference between the color components). In stego-only attack only the stego object (image) is available.
Algorithm we are implementing is a stego -only attack in LSB insertion for uncompressed color images encoded in 24 bit BMP format...
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