How to implement DotNetOpenAuth as Oauth provider in MVC3 .net?

Question

I have been researching for a while now about how to implement an OAuth provider to secure my web api, but without good results.

For what I've seen so far, apparently there are only three libraries to develop an OAuth provider in .net:

1- DotNetOpenAuth 2- DevDefined 3- OAuth.net from madgex

madgex doesn't have any documentation for providers at all, at leats I haven't found anything, same with DevDefined, well, the last one has some documentation, but it lacks samples.

DotnetOpenAuth I think is the one most developers use, but I'm having a hard time to understand its samples, and documentation is terrible.

Has anybody implemented any of these libraries to write an Oauth PROVIDER, NOT CONSUMER, or anyone knows where I can find a decent documentation fro any of these.

For the record im trying to develop a 3-legged oauth provider.

Can anybody help me out here??

Answer 1

Have you checked out this project template, which although it's MVC 2 should provide some useful ideas for doing it in MVC 3:

http://visualstudiogallery.msdn.microsoft.com/81153747-70d7-477b-b85a-0374e7edabef

Then there is the OAuthServiceProvider sample that comes with DotNetOpenAuth, which is WebForms but the principles are mostly the same.