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   Re: [xml-dev] Blended Authentication (AKA "Granular Access Control")

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The latter. Your approach makes total sense to me - I just needed to
stretch my thinking on this topic a bit further with respect to the
capabilities of WS-Trust and the policy-related GXA specifications (you
have helped me do that). 

So it sounds like the requirements in the original scenario can be
satisfied by WS-Trust and these policy-related GXA specifications, along
with mechanisms such as X.509 certs, SAML, Kerberos tickets, etc.

Thanks for your insight.

Joe Chiusano
Booz | Allen | Hamilton

"Cavnar-Johnson, John" wrote:
> 
> 
> 
> >
> > -----Original Message-----
> > From: Chiusano Joseph [mailto:chiusano_joseph@bah.com]
> > Sent: Wednesday, May 07, 2003 2:52 PM
> > To: Cavnar-Johnson, John
> > Cc: xml-dev@lists.xml.org
> >
> > <Quote1>
> > According to the WS-Trust spec, "a web service can require
> > that an incoming message prove a set of claims." These claims
> > are not limited merely to identity, but can include the
> > user's principal (or security
> > context)
> > </Quote1>
> >
> > Can you take this one step further and explain how this would
> > apply to the presented scenario? In other words, how would
> > the identity of SYSTEM A be brought into the picture
> > (allowing SYSTEM A to really be considered a "user")? And how
> > does it relate to the possibility of more granular security
> > at (for example) the WSDL Operation level?
> >
> 
> Do you want SYSTEM A to authenticate the user, or do you want the request to
> actually come from SYSTEM A? If the former, then this is exactly the
> brokered trust scenario.  If the latter, then you add a requirement to your
> policy that states the request must include a certificate from SYSTEM A as
> well as credentials for the user.
> 
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