CardSpace user to Shibboleth RP

From Project Concordia

cobovarbotan This one is pretty easy to describe.

A user has Microsoft's CardSpace on their desktop and wants to access a resource that is protected by Shibboleth.

The constraint is that the user's enterprise is "Microsoft only". That means the user cannot be asked to install or use any third party software on their desktop or as an IdP. This does not necessarily assume the current incarnation of CardSpace or Shibboleth; i.e. this can be satisfied by later versions of either or both.

Eric, is the constraint that the enterprise won't speak the SAML-based Shib protocol?

Not quite. If Microsoft supplied something on the CardSpace client side that spoke the SAML-based protocol, then that would be acceptable.

From what I hear in recent news (June, 2007) it looks like this problem will be addressed on the Shibboleth/SAML relying party side.