A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Public-Key Infrastructure (X.509) Working Group of 
the IETF.

        Title           : The PKIX UserGroupName GeneralName Type
        Author(s)       : M. StJohns
        Filename        : draft-ietf-pkix-usergroup-01.txt
        Pages           : 14
        Date            : 2002-9-25
        
A number of systems which understand X.509 client certificates have
developed various ad hoc mechanisms to map a certificate to a
'userid'/'group(s)' value which can then be used for access control.
The mechanisms include idiosyncratic name forms for the SubjectName
field such as encoding the userid as a CommonName and the group as an
OrganizationalUnit, or mapping the certificate against an entry in a
directory system.  This document describes an otherName extension of
the GeneralName type which can be used in the SubjectAltName
extension or IssuerAltName extension to directly encode userid and
group information.

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