Kuba Nowak wrote:
> 
> Let's suppose there is an authentication module which gives
> user proxy certificate (generated using certificate stored
> in LDAP) as a response to valid username and password.

"Authentication module" for which service? A web server? Grid?

> This proxy certificate may vary depending on the role: normal user or
> admin.

Are you really talking about proxy certificates?

> After successful authentication

Authentication to which service?

> admin might
> want to connect directly to LDAP server with an eye to create
> new entry. The point is, to use proxy certificate as an
> authorization to not force the user to use the password yet
> again.

If you're after what I think proxied authorization on the LDAP
connection could be of help.

See: http://ietfreport.isoc.org/all-ids/draft-weltman-ldapv3-proxy-13.txt

Check presence of 2.16.840.1.113730.3.4.18 in attribute
'supportedControl' of your LDAP server's rootDSE to determine whether
your LDAP server supports it.

Ciao, Michael.

-- 
Michael Ströder
E-Mail: [EMAIL PROTECTED]
http://www.stroeder.com

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