Hi all I have just uploaded to grid forge a document describing the use cases and requirements for a Credential Validation Service. It can be downloaded from here https://forge.gridforum.org/sf/go/projects.ogsa-authz/docman.root.authz_serv... This document will be discussed at our next teleconference and at GGF18, along with the revised charter. The next document I intend to produce is the functional components document showing the different ways in which the functional components of authorisation decision making can plug together regards David -- ***************************************************************** 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 *****************************************************************