Spread Spectrum Image Steganography Patent
John Young
jya at pipeline.com
Fri Jun 13 12:26:44 PDT 2003
The US Army today announced the availability of licensing
of its patent for "Spread Spectrum Image Steganography:"
http://cryptome.org/usa-patent.htm (with copy of the patent)
Patent Abstract
The Spread Spectrum Image Steganography (SSIS)
of the present invention is a data hiding/secret communication
steganographic system which uses digital imagery as a cover
signal. SSIS provides the ability to hide a significant quantity
of information bits within digital images while avoiding detection
by an observer. The message is recovered with low error
probability due the use of error control coding. SSIS payload
is, at a minimum, an order of magnitude greater than of
existing watermarking methods. Furthermore, the original
image is not needed to extract the hidden information. The
proposed recipient need only possess a key in order to reveal
the secret message. The very existence of the hidden
information is virtually undetectable by human or computer
analysis. Finally, SSIS provides resiliency to transmission
noise, like that found in a wireless environment and low levels
of compression.
Patent No.: 6,557,103
Granted: April 29, 2003
Inventors:
Boncelet, Jr.; Charles G. (Newark, DE);
Marvel; Lisa M. (Churchville, MD);
Retter; Charles T. (Belcamp, MD)
Assignee:
The United States of America as represented
by the Secretary of the Army (Washington, DC)
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