[OGSA-AUTHZ] checkpointing the discussion on VO attributes
Chad La Joie
chad.lajoie at switch.ch
Mon Jan 21 08:52:03 CST 2008
Yes, when I made the comment about the VO needing an entity ID I was
thinking that a VO would be represented by a distinct piece of software.
Given my updated understanding that a single piece of software might
represent multiple VOs, then yes, I think the VO attribute is needed.
What does need an entity ID is the VO software system.
Valerio Venturi wrote:
> Hi,
> I'll try to checkpoint the discussion had so far.
>
> As Krzysztof is planning to serve more than one VO with the same
> service, we cannot have a one to one relationship between entityIDs and
> VOs, this imply the need of having a VO attribute. Which was also more
> or less David's concern, an authority being able to assert whatever it
> wants. If we go wiht this, the VO attribute stays.
> We have two proposal so far. Tom suggested to use the MACE-Dir
> eduPersonScopedAffiliation attribute
>
> <saml:Attribute
> xmlns:xacmlprof="urn:oasis:names:tc:SAML:2.0:profiles:attribute:XACML"
> xmlns:ldapprof="urn:oasis:names:tc:SAML:2.0:profiles:attribute:LDAP"
> xacmlprof:DataType="http://www.w3.org/2001/XMLSchema#string"
> ldapprof:Encoding="LDAP"
> NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri"
> Name="urn:oid:1.3.6.1.4.1.5923.1.1.1.9"
> FriendlyName="eduPersonScopedAffiliation">
> <saml:AttributeValue
> xsi:type="xs:string">member at voName
> </saml:AttributeValue>
> </saml:Attribute>
>
> while in our first draft Krzysztof and I suggested the use of a specific
>
> <saml:Attribute
> xmlns:xacmlprof="urn:oasis:names:tc:SAML:2.0:profiles:attribute:XACML"
> NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri"
> Name="uri_to_define"
> FriendlyName="vo"
> xacmlprof:DataType="http://www.w3.org/2001/XMLSchema#string">
> <saml:AttributeValue xsi:type="xsd:string">
> voName
> </saml:AttributeValue>
> </saml:Attribute>
>
> Let's try to agree on one.
>
> There were concerns about Tom's proposal to use Grouper to express
> groups, specifically about the contents being an URN. Anyway, the
> specification doesn't mandate them to be URN, it recommends to use URIs
> is uniqueness is to eb achieved.
>
> Other concerns with using this?
>
> Still we have no suggestions for expressing roles, apart from the
> initial (but I have made the group syntax homogeneous with the above)
>
> <saml:Attribute
> xmlns:xacmlprof="urn:oasis:names:tc:SAML:2.0:profiles:attribute:XACML"
> NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri"
> Name="uri_to_define"
> FriendlyName="role"
> xacmlprof:DataType="http://www.w3.org/2001/XMLSchema#string">
> <saml:AttributeValue xsi:type="xsd:string">
> VO-Admin at vo
> </saml:AttributeValue>
> <saml:AttributeValue xsi:type="xsd:string">
> SoftwareManager at vo:group:subgroup
> </saml:AttributeValue>
> </saml:Attribute>
>
> that seems to receive more favor than the one with the scope attributes.
>
> What problems can you see with that?
>
> Valerio
>
>
>
>
>
> --
> ogsa-authz-wg mailing list
> ogsa-authz-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/ogsa-authz-wg
--
SWITCH
Serving Swiss Universities
--------------------------
Chad La Joie, Software Engineer, Security
Werdstrasse 2, P.O. Box, 8021 Zürich, Switzerland
phone +41 44 268 15 75, fax +41 44 268 15 68
chad.lajoie at switch.ch, http://www.switch.ch
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