RE: [xacml] request's attribute assertion lifetime?

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Daniel Engovatov <>
Date
2004-03-15T18:31:00+00:00
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RE: [xacml] request's attribute assertion lifetime?
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Subject: RE: [xacml] request's attribute assertion lifetime?

From: "Daniel Engovatov" <>

To: "Frank Siebenlist" <>, <>

Date: Mon, 15 Mar 2004 10:45:44 -0800

How would you deal with caching a decision from a policy
Grant(something) (from 3 to 5) and (direction =  in)
Deny(same thing) (from 4 to 4:30) and (last_name = engovatov)

Simple intersections will not cut it.   To deal with intervals properly
you do need to express them as a data type.  To cache anything you need
to trace ALL changes in the context, not just time.

I doubt it would be simple.   And you already can express all this rules
using XACML and extensions to XACML - it just would not be easy to
construct a query that answers your question.

Daniel.