ExtremeSwank OAuth adds both client-side and server-side OAuth support to .NET. It features:

• Seamless integration with .NET security framework for both client and server
• Easy to use API allows you to be up and running in minutes
• OpenID+OAuth plug-in compatible with ExtremeSwank OpenID Consumer
• Server storage implementation is compatible with any .NET compatible database
• Custom storage implementations can be easily created

A Complete OAuth Implementation

• Header, Query String (GET), and POST body credential passing methods
• All official signing methods: HMAC-SHA1, RSA-SHA1, PLAINTEXT
• Additional signing methods: HMAC-SHA256, HMAC-SHA512
• Server has full replay protection with nonces and timestamp verification
• Client supports Two-Legged OAuth in addition to standard OAuth