This C# OpenID library adds OpenID 2.0 Provider and Relying Party support to your web site both programmatically and through convenient drop-in ASP.NET controls.

Check out the VersionChanges page to see where we're going or where we've been.

Features

• Add support for your site visitors to login with their OpenIDs by just dropping an ASP.NET control onto your page. It's that easy.
• Give your site members their own OpenIDs with the provider support included in this library.
• Sample relying party and provider web sites show you just how to do it.
• Easy access to all the functionality so you can customize how OpenID will operate on your site, whether you use ASP.NET or not.
• Full support for custom extensions. Plus built-in support for Simple Registration.
• Works in partial trusted shared hosting environments.
• Support for web farms where state persistence, front-facing web servers and ASP.NET may not be standard or even available.
• OpenId 2.0 and 1.x support.

Requirements

• .NET Framework 2.0
• Microsoft Windows (Linux+mono: your mileage may vary)

History

This library was originally a port from the JanRain OpenId library that was written in the .NET Boo language, and that library was a port from a Python library. It has come a long way since then.