[LAF04] Enhancing security of Web Services Workflows using Watermarking
Rapport Scientifique :
Date de dépot: 2004/01/01,
(Tech. Rep.: CEDRIC-04-672)
motcle:
Résumé:
In this work, we present a solution based on watermarking
to address the problem of securing web services workflows.
Indeed, watermarking brings a practical solution to protect
the intellectual property of a document.
The work is divided into two parts. In a first part, we present
a watermarking algorithm which slightly modifies messages
flooding through workflows. Then, we show how the aggregation of
watermarked messages permit to claim ownership over a specific data.
We study theoretically how resilient is this technique to the most current kinds
of attacks and validate our results using a real example.
In a second part, we model web services as tree transformations and we
isolate a class of transformations for which it is possible to track the watermarked nodes of the input.
Straightforward extensions of those results permit the simultaneous copyright protection
of a composite document built by several peers.
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