Steganographic data hiding using a device clock

Details Steganographic data hiding using a device clock Steganographic data hiding using a device clock

2006-10-05

2009-10-13

Tucker, Wesley (Department: 2624)

Image analysis

Applications

C382S137000, C382S232000, C380S218000

Reexamination Certificate

active

07602940

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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