At the last F2F, we had extensive discussions about how delegation of rights and
the associated admin of policy could be implemented in xacml.
At the very end of the F2F, we concluded that it was best to come up with a more
"formal" way of describing the different ideas, such that it is easier to reason
about and to discuss the underlying model.
After Polar came out with his "The Formal Semantics of XACML" paper, he
convinced me that the use of a pure functional language may be a good way to
explain and discuss new xacml language features, like delegation.
So, I started to model a subset of xacml in haskell, and to see how delegation
schemes would be rendered in that environment.
I realize that most of you are new to haskell, but my hope is that because I
myself am a haskell novice also, that I could pull some of you along the same
learning curve that is reflected in the document. I've tried to add complexity
to the model gradually in stages as I was trying to get my mind around the
problem. So, if your mind works a little like mine, you may be able to learn
with me. If your have a normal mind, then you may be out of luck ;-)
Please note that nothing is set in stone, there are still some issues to work
out, and suggestions and comments are most welcome.
Frank Siebenlist fra...@mcs.anl.gov
The Globus Alliance - Argonne National Laboratory