The topic of using Shibboleth for authentication and XACML for authorization 
has heated up again in our organization.

Here is our ideal scenario:

* Authentication with Shibboleth, Shibboleth attributes made available for use 
in Fedora XACML policies: made possible by servlet filters developed at other 
institutions

* XACML policies stored as Fedora objects, inheritable rules, indexed in the 
resource index, cached:  made possible by FeSL 

However, it appears that if FeSL is enabled (necessary to get the new and 
improved version of the XACML implementation), then FeSL JAAS is also enabled, 
and so the Shibboleth authentication piece will be disabled or bypassed 
(right?).

We'd like to have our cake and eat it, too, ideally without having to wrestle 
with developing a JAAS Shibboleth plugin.  Is there a way to separate FeSL 
authentication from FeSL authorization, enable the latter, but not the former? 
Thoughts?  

Some background reading:

https://jira.duraspace.org/browse/FCREPO-577
https://wiki.duraspace.org/display/FCR30/Fedora+Security+Layer+%28FeSL%29

thanks in advance,

-- Scott




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