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


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.


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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