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Subject: Storing policies in a policy Repository


I was reading the SAML 2.0 profile of XACML v2.0. In section 4.2 is written:

The <XACMLPolicyStatement> may also be used in a SAML Assertion as a
format for storing the <XACMLPolicyStatement> in a repository.

How was wondering how the XACMLPolicyStatement can be used
for storing a policy or a policy set in a policy repository.

I understand that the XACMLPolicyStatement extends a SAML Statement,
but in this case, how to place the SAML Assertion in the SOAP Message?

If the SAML Assertion is placed using WS-Security, what to write in
the SOAP Body?
A WS-Trust RST is acceptable in my opinion, but it can lead to potential
different implementation, breaking the interoperability. And more, the
SAML assertion
in the header does not authenticate the message, potentially breaking

But since the namespace is


it can be also acceptable to write it in the body, in my opinion.

What is your suggestion?

Thanks in advance,


Massimiliano Masi


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