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Subject: Re: [xacml] Minutes for 7 February 2013 TC Meeting - updated
Minutes for 7 February 2013 TC Meeting - updated
(added link below to ref material on the NIST site
that describes the Policy Machine in more detail)
Time: 15:00 ET (GMT-0500)
Tel: 513-241-0892
Access Code: 65998
I. Roll Call
Voting Members:
Richard Hill The Boeing Company
Mohammad Jafari Veterans Health Administration
Steven Legg ViewDS
Rich Levinson Oracle
Hal Lockhart Oracle
Bill Parducci Individual
Erik Rissanen Axiomatics
John Tolbert The Boeing Company
Members:
Robert van Herk Connectis
Approve Minutes:
24 January 2013 TC Meeting
https://lists.oasis-open.org/archives/xacml/201301/msg00030.html
hal: minutes approved, no obj
II. Adminstrivia
Conformance Tests v3.0
https://lists.oasis-open.org/archives/xacml/201301/msg00025.html
john: email contains a chart for conformance compliance; looking
for vendors to fill out the yes/no's as to whether support
is available for the features represented as list of the
xml elements in the xacml core spec plus a list of the combining
algorithms in the core spec.
XACML REST Profile WD-07 uploaded, request for Vote
https://lists.oasis-open.org/archives/xacml/201301/msg00028.html
https://lists.oasis-open.org/archives/xacml/201302/msg00006.html
15 day public review
john moves
richard h seconds
no obj to unanimous
XACML XSPA Profile WD-01 request for Vote
https://www.oasis-open.org/apps/org/workgroup/xacml/download.php/47685/Proposed%20draft%20for%20XSPA-XACML%20Obligations%20Profile%20Draft_0.1.doc
hal: is it 2.0 or 3.0
mohammad: will require schema support for 3.0, so 2.0 at present
hal: some other issues on front page
mohammad: will look at these issues;
hal: vote deferred until new draft or issues closed; hal will email comments
XACML v3.0 Published
https://lists.oasis-open.org/archives/xacml/201301/msg00036.html
hal: official notification that 3.0 is now published OASIS Standard (OS)
the email has URLs for obtaining the specs;
hal: will contact abbie barbir for itut
XACML Combining Algorithm Profile WD-03 status update:
30 day Public Review has begun
https://lists.oasis-open.org/archives/xacml/201301/msg00031.html
hal: both EC-US and IPC are in 15d pub rev;
comments? none so far
XACML EC-US status update:
15 day Public Review
https://lists.oasis-open.org/archives/xacml/201302/msg00001.html
XACML IPC status update:
15 day Public Review
https://lists.oasis-open.org/archives/xacml/201302/msg00002.html
hal: Combining Algorithm Profile WD-03 is in 30d pub rev;
comments? none so far
XACML JSON Profile WD-11 uploaded
https://lists.oasis-open.org/archives/xacml/201302/msg00009.html
new wd for json profile; wd10->wd11 based on stephen input
erik attr assign in obl optional
hal: should look at:
Policy Machine reference
The Policy Machine - email ref from prateek mishra
hal: you have to "buy" specification; anyone know more?
no replies
rich: I just checked the site, and there are quite a few direct
refs to material (free) describing the PM:
http://csrc.nist.gov/pm/references-library.html
XACML RSA demo:
john: boeing ready for tagging part
stephen posted link
have been working w nextlabs
still not all people that are needed
hal: boeing, oracle, uds, nextlabs were only ones on this wk's call
only 2 more calls before interop - please send people to
call so info is rcvd
hal: oasis will make banner; kmip also put up a banner, company
logo's connected in box w chains around it. Last year we
showed components but not logos; open to suggestions to
give to oasis by next wed.
hal: slide deck from last yr needs some updates but should be usable;
respond to email
III. Issues
JSON Profile
https://lists.oasis-open.org/archives/xacml/201302/msg00010.html
stephen: has minor chgs plus one thing on id's but has not heard
from david yet
Attributes of Relations
https://lists.oasis-open.org/archives/xacml/201301/msg00024.html
hal: should we tackle these 2 issues
erik: think we are converging on something; perf concern about
large sets of tuples, stephen said could optimize by
processing subsets; concern that xacml might be translatable
to db searches;
stephen: what should extensions actually look like, mohammad came
up w sql-like approach; in condition implicitly selects, and
need diff syntax for joins;
mohammad: thinks a simple join will work
stephen: tuple sets soon has duplication within nested context;
because of that abandoned nested;
rich: wants to mention that sql not a good representation, should
be more like attr-val-entity;
stephen: agrees in general
mohammad: agrees but when tried to extend hier ran into issues and
thats when sql emerged.
rich: will try to elaborate in followup email
Policy Labeling
https://lists.oasis-open.org/archives/xacml/201301/msg00022.html
stephen: still looking into alternatives to admin approach; practical
necessity to dup admin policies nearly everywhere there is issue
wrt unsafe policies being integrated w admin policies; reduction
graphs lead to some perf issues
erik: fwd chaining doesn't have same problem; top down recursive
could limit intermediate delegates;
also issue w np-complete;
stephen: hasn't found way to deal w malicious policy;
hal: in old days disc about detecting invalid policies;
hal: recollection of use cases; large ratio between general pop
vs admin people; maybe that helps;
rich: what is issue of ctl
stephen: sibling admin policy; writer of admin has to anticipate
places where delegates will be extending, and making
sure delegates have right authority; only sibling within
same policy set.
hal: as opposed to putting admins high in the tree;
stephen: but hi in tree can't authorize things lower in the tree;
stephen: one interesting use case is discretionary access ctl, such
as every owner of resource is authorized, so they can write
policies for their own resources;
hal: "can do, can del" was intended to address that; if you are allowed
to do it, you can delegate it as a policy; originally was in
admin profile but we moved it to core.
"can do, can del" is popular access model, implicitly mentioned
in sections 2.7, 2.9 of core spec.
Other business:
hal: next call in 2 weeks 21-Feb-2013
meeting/call adjourned: 3:51PM 7-Feb-2013
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