© 2004 Computer Academic Underground
Plain Text
§Steganography with plain text can be done a number of different ways:
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*Using selected characters or words from a specially-crafted cover-text (like our example) *Introducing white-space characters that a text viewer won’t display
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•Some of the more popular plain text methods in the days of print media were to design a steganographic system by pre-determining which characters or words in a given cover text were to be used to re-construct the message, much like our previous example of selecting the first letter from each word.
•Now that electronic media is prevalent, other methods have arisen such as introducing white-space characters like extra spaces and tabs.
•Many applications like word processors and web browsers tend to compress sequences of multiple white-space characters so that they do not display and appear to the naked eye.  The applications can detect these and know they are there, but a human just looking at the display most likely will not.