Re: [xacml] Attribute's Issuer as string?

[Satoshi Hada <SATOSHIH@jp.ibm.com>]

Hi,

I've just found another error both in
Version 1.0 and the draft of Version 1.1:

Section 5.27:
<xs:attribute name="Issuer"
       type="xs:anyURI"  use="optional"/>
should be
<xs:attribute name="Issuer"
       type="xs:string"  use="optional"/>


Furthermore, I found the following sentence,
which says that it must be compared by URI equality.

>> If the Issuer attribute is
present in the attribute designator, then it MUST match, by URI equality,
the Issuer of the same attribute.  

Satoshi Hada
IBM Tokyo Research Laboratory 
mailto:satoshih@jp.ibm.com

Anne Anderson <Anne.Anderson@Sun.com> 2003/07/10 05:03 Please respond to Anne.Anderson

To:        Frank Siebenlist <franks@mcs.anl.gov>         cc:        XACML TC <xacml@lists.oasis-open.org>         Subject:        Re: [xacml] Attribute's Issuer as string?

Frank,

This is an inheritance from SAML, which defines Issuer as a
"string".  Clearly it is a rather primitive concept at this
point, and could use much more elaboration based on actual
implementation environments.  Yours is a good case.

Thanks,
Anne

On 9 July, Frank Siebenlist writes: [xacml] Attribute's Issuer as string?
 > From: Frank Siebenlist <franks@mcs.anl.gov>
 > To: XACML TC <xacml@lists.oasis-open.org>
 > Subject: [xacml] Attribute's Issuer as string?
 > Date: Wed, 09 Jul 2003 12:15:11 -0700
 > 
 > The Attribute's Issuer is defined as a string, and I was wondering
what the 
 > design rational was behind that choice.
 > 
 > I was trying to see how you could take care of part of the path validation
of an 
 > assertion in xacml.
 > 
 > For example, you would only accept a certain attribute value if it
was issued by 
 >    a subject that was a member of a certain group, or only
by an issuer with a 
 > certain name only if that name was asserted by a certain identity
issuer.
 > 
 > I guess I was looking for an issuer type that would again be a subject
with its 
 > own attributes.
 > 
 > One alternative would be to chain different subjects in the Request
together 
 > through a naming conventions that ties issuer's value to a subject's
attribute 
 > value ... but that doesn't seem very elegant.
 > 
 > Insight? Suggestions?
 > 
 > Thanks, Frank.
 > 
 > 
 > -- 
 > Frank Siebenlist              franks@mcs.anl.gov
 > The Globus Project - Argonne National Laboratory
 > 
 > 
 > You may leave a Technical Committee at any time by visiting http://www.oasis-open.org/apps/org/workgroup/xacml/members/leave_workgroup.php

-- 
Anne H. Anderson             Email: Anne.Anderson@Sun.COM
Sun Microsystems Laboratories
1 Network Drive,UBUR02-311     Tel: 781/442-0928
Burlington, MA 01803-0902 USA  Fax: 781/442-1692


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