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h1. Dorian
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!imagegallery:Dorian-logo.jpg^Dorian-logo.jpg|align=right!
Dorian is an open source solution providing federated identity management. Dorian enables single sign on for users and services in a Web/Grid services environment. A Web/Grid services environment generally spans across organizational boundaries. It can be comprised of hundreds of thousands of users and tens of thousands of services. Identity vetting, authentication, and provisioning user and service credentials in large distributed environments are extremely complex and challenging problems. Dorian alleviates these complexities and addresses these challenges by allowing organizations to integrate existing identity management systems into a Web/Grid services environment. This enables users of these organizations to use their existing credentials to authenticate to Web/Grid Services. In addition, Dorian provides a secure mechanism to issue and provision credentials for Web/Grid services. This makes Dorian a complete identity management solution for Web/Grid service environments. Below is a list of some of Dorian's salient features:
* Identity Federation
* Built-in Identity Provider
* Issues User Credentials
* Issues Service Credentials
* Compliance with [Federal e-Authentication Guidelines|http://www.cio.gov/eauthentication/].
* Built-in Certificate Authority
Administration
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