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Steganograpy Software

3. PC Software that Provide Steganographic Services

3.1 Background

Steganographic software is new and very effective. Such software enables information to be hidden in graphic, sound and apparently "blank" media. Charles Kurak and John McHugh discuss the implications of downgrading an image (security downgrading) when it may contain some other information [Kurak92]. Though not explicitly stated the author(s) of StegoDos mention embedding viruses in images [StegoDos].

 

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Background

In the computer, an image is an array of numbers that represent light intensities at various points (pixels1) in the image. A common image size is 640 by 480 and 256 colors (or 8 bits per pixel). Such an image could contain about 300 kilobits of data.

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1 A pixel is an instance of color, a point in a picture. (go back)

 


Next Section: 3.2 Evaluation Method


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