well RSA isn't a Federation Service/Identity Provider on its own (at least not that I can tell).
We do support ADFS, which could be configured with RSA SecurIDs (http://technet.microsoft.com/en-us/library/hh344805(WS.10).aspx)
I think on the vCloud Director side we just need to ensure that the claims are setup correctly to have the data inside the authentication token that we care about.