Re: [xdi] XDI TC Notes Unofficial Telecon Friday 2015-10-05

From
Markus Sabadello <>
Date
2015-10-09T07:39:37+00:00
ID
Thread
Re: [xdi] XDI TC Notes Unofficial Telecon Friday 2015-10-05
There is also Web Access Control based
      on WebID, but that is of course less expressive than XACML:

      https://www.w3.org/wiki/WebAccessControl

      

      Markus

      

      On 10/08/2015 09:28 PM, =Drummond Reed wrote:

    

    
      
I agree that Peter has a great point, and also with
        Phil that we don't need to reinvent anything XACML has already
        figured out. I do think we should adapt to XDI, simply because
        the XML and XDI graph models are different, but ideally that's
        not hard.
        

        

        
In any case, the next step is to investigate the XACML
          model closely. Peter, any links to good resources that can
          help us analyze it quickly (besides just going straight to the
          specs)?

      

      

        
On Thu, Oct 8, 2015 at 12:16 PM,
          Phillip J. Windley <> wrote:

          

            There’s no need to reinvent the wheel. XACML has already
            been down this road (as have other policy standard
            activities). We ought to take what works and use it.

            

              

                > On Oct 8, 2015, at 2:08 PM, Davis, Peter <>
                wrote:

                >

                > On Oct 7, 2015, at 1:07 AM, =Drummond Reed
                <> wrote:

                >>

                >>      • The first policy to result to evaluate
                to true wins.

                >

                > I don't think this is always the case. For example,
                in XACML, the policy set can have several rule combining
                outcomes:

                >

                > - Deny-overrides (Ordered and Unordered),

                > - Permit-overrides (Ordered and Unordered),

                > - First-applicable and

                > - Only one applicable

                >

                > you describe the "permit overrides" form, but, in
                my experience, "deny-overrides" is more common

                >

                > =peterd

                >

                >