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Overview:
Privacy in the digital world is an important problem which is becoming even more pressing as new collaborative applications are developed. The lack of privacy preserving mechanisms is particularly problematic in federated identity management contexts. In such a context, users can seamlessly interact with a variety of federated web services, through the use of single-sign-on mechanisms and the capability of sharing personal data among these web services. This paper introduces mechanisms and algorithms for policy compliance checking between federated service providers, based on an innovative policy subsumption approach. They formally introduce and analyze the approach. They also shows how the approach is suitable for deployment and application in existing federated identity management solutions, such as Liberty Alliance, WS- and Shibboleth.
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| Format: | Size: | 370 KB | |
| Date: | Feb 2008 | ||
| Pages: | 12 |
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