To be more in-line with the OWIN / middleware mindset (and because Damian said so) – I broke up our OWIN security assembly into smaller components:

http://www.nuget.org/packages?q=Thinktecture.IdentityModel.Owin.*

Currently there are four packages:

• Basic Authentication
• X.509 client certificate authentication
• Claims transformation
• Requiring SSL and client certs

…plus a base package with various helpers…

A sample showing all four main packages together can be found here.

More to come…