MP3Stego: Hiding Text in MP3 Files

With the widespread popularity of the MP3 file format and its ubiquitous presence on storage media and the Internet, it was only a matter of time before it joined ranks alongside other steganographic mediums. Johnson defines steganography as "the art of passing information in a manner that the very existence of the message is unknown." Unlike cryptography, which is easily detected (but hopefully difficult to decipher), steganography is an attempt to conceal the very presence of the hidden message. When the two techniques are combined, as they are in MP3Stego, they present a formidable challenge.

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Read the complete paper at SANS