Valerio Venturi wrote:
On Mon, 2007-01-29 at 20:10 +0000, David Chadwick wrote:
* VOMS profile Discussed on Oct 16 telecon - minutes on list Meaning of the primary type must be explicit rather than implicit (as currently done via sequence) Awaiting response from VOMS group What we haven't understood so far is why an explicit primary attribute is needed rather then an implicit one and what needs an eventual change in VOMS AC format would address.
Hi Valerio The OGSA Authz group is not saying that an explicit primary attribute is needed. It is saying that if you have a set of attributes, then they are all the same, and should be treated as all being the same, and you cannot imply something special for the first one in the list, since the order may not be maintained by intermediate processing nodes, or even by software modules within one system. So, if you have a requirement that one attribute value in a set is special, then this needs to be explicitly signaled in the protocol. One way of doing this is by removing it from the set, and explicitly flagging it as a different type of attribute. There is a good well documented example of this already in the EduPerson schema.
* Attribute Retrieval Protocol Added as last meeting OASIS profile for SAML - Tom Scavo author
* Von Welch resignation as WG chair Those who are interesting in replacing Von should send email to David
* Other business Tom Scavo: Do we need mechanism to bind SAML to X.509 (equivalent to VOMS)? David: 2005 X.509 has specification for binding XML to X.509, but doesn't specify XML content Tom Scavo to investigate how these relate. Shouldn't this be done by SubjectConfirmation? Or are you talking about assertions travelling within X.509 proxies?
We are talking about passing XML assertions or other XML content in an X.509 attribute within an X.509 certificate.
David: VOMS is providing a standard SAML protocol interface for picking up VOMS attributes. A beta is supposed to be ready by April 2007 That's correct David. The protocol is that in SAML V2.0 Profiles for X.509 Subject as agreed. We are about to work on the implementation of the protocol and we will eventually inform Tom and the authors about any issue we may have. Hope it won't be too late by that time but we couldn't make it before.
great stuff David
Valerio
-- ***************************************************************** David W. Chadwick, BSc PhD Professor of Information Systems Security The Computing Laboratory, University of Kent, Canterbury, CT2 7NF Skype Name: davidwchadwick Tel: +44 1227 82 3221 Fax +44 1227 762 811 Mobile: +44 77 96 44 7184 Email: D.W.Chadwick@kent.ac.uk Home Page: http://www.cs.kent.ac.uk/people/staff/dwc8/index.html Research Web site: http://sec.cs.kent.ac.uk Entrust key validation string: MLJ9-DU5T-HV8J PGP Key ID is 0xBC238DE5 *****************************************************************