System and method for evaluating and enhancing source anonymity for encrypted web traffic
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United States of America Patent
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Dec 29, 2009
Grant Date -
Jul 21, 2005
app pub date -
Feb 24, 2005
filing date -
Apr 23, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and method is provided for evaluating the effectiveness of data encryption for hiding the identity of the source of Web traffic. A signature is constructed from encrypted Web traffic for a Web page sent by a target Web site, and the signature is compared with archived traffic signatures obtained by accessing various Web pages of interest in advance. If the signature of the detected encrypted Web traffic matches a stored traffic signature beyond a pre-set statistical threshold, a positive match is found, and the source of the traffic is identified. Countermeasures for reducing the reliability of source identification based on traffic signature matching are provided.
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