FOAF+SSL: RESTful Authentication for the Social Web

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Executive Summary

The paper describes a simple protocol for RESTful authentication, using widely deployed technologies such as HTTP, SSL/TLS and Semantic Web vocabularies. This protocol can be used for one-click sign-on to web sites using existing browsers | requiring the user to enter neither an identifier nor a password. Upon this, distributed, open yet secure social networks and applications can be built. After summarizing each of these technologies and how they come together in FOAF+SSL, the paper describes declaratively the reasoning of a server in its authentication decision. Finally, the paper compares this protocol to others in the same space.

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