Steganographic data hiding using a device clock
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United States of America Patent
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Oct 13, 2009
Grant Date -
Apr 5, 2007
app pub date -
Oct 5, 2006
filing date -
Apr 16, 1998
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Abstract
The presently claimed invention relates generally to methods and apparatus associated with steganographic encoding (e.g., data hiding). One claim recites a method including: obtaining plural-bit auxiliary information; and during communication between a first computer and a second computer over a network, modulating timing or phase of a clock signal generated by the first computer so as to steganographically hide the plural-bit auxiliary information in a communications signal sent between the first computer and the second computer. Of course, other claims and combinations are provided as well.
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