WebID 1.0 – Web Identification and Discovery

Source: WebID

Toby Inkster
Henry Story
Bruno Harbulot
Reto Bachmann-Gmür
Manu Sporny, Digital Bazaar, Inc. msporny@digitalbazaar.com
Stéphane Corlosquet, Massachusetts General Hospital scorlosquet@gmail.com

Social networking, identity and privacy have been at the center of how we interact with the Web in the last decade. The explosion of social networking sites has brought the world closer together as well as created new points of pain regarding ease of use and the Web. Remembering login details, passwords, and sharing private information across the many websites and social groups that we are a part of has become more difficult and complicated than necessary. The Social Web is designed to ensure that control of identity and privacy settings is always simple and under one’s control. WebID is a key enabler of the Social Web. This specification outlines a simple universal identification mechanism that is distributed, openly extensible, improves privacy, security and control over how one can identify themselves and control access to their information on the Web.

It is a fundamental design criteria of the Web to enable individuals and organizations to control how they interact with the rest of society. This includes how one expresses their identity, public information and personal details to social networks, Web sites and services.

Semantic Web vocabularies such as Friend-of-a-Friend (FOAF) permit distributed hyperlinked social networks to exist. This vocabulary, along with other vocabularies, allow one to add information and services protection to distributed social networks.

One major criticism of open networks is that they seem to have no way of protecting the personal information distributed on the web or limiting access to resources. Few people are willing to make all their personal information public, many would like large pieces to be protected, making it available only to a selected group of agents. Giving access to information is very similar to giving access to services. There are many occasions when people would like services to only be accessible to members of a group, such as allowing only friends, family members, colleagues to post an article, photo or comment on a blog. How does one do this in a flexible way, without requiring a central point of access control?

Using a process made popular by OpenID, we show how one can tie a User Agent to a URI by proving that one has write access to the URI. WebID is an authentication protocol which uses X.509 certificates to associate a User Agent (Browser) to a Person identified via a URI. WebID is compatible with OpenID and provides a few additional features such as trust management via digital signatures, and free-form extensibility via RDF. By using the existing SSL certificate exchange mechanism, WebID integrates smoothly with existing Web browsers, including browsers on mobile devices. WebID also permits automated session login in addition to interactive session login. Additionally, all data is encrypted and guaranteed to only be received by the person or organization that was intended to receive it.


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