SAML 1.1 POST Profile, SubjectConfirmation

Title: SAML 1.1 POST Profile, SubjectConfirmation

Hi all,

This is regarding SubjectConfirmation in the SAML 1.1 POST Binding.  I wonder if this has come up before, SAML 1.1 has been a standard for a long time.

The .xsd makes this SubjectConfirmation optional within a Subject, however, text in section 4.1.2.5 of http://www.oasis-open.org/committees/download.php/3405/oasis-sstc-saml-bindings-1.1.pdf says:

For POST binding the relevant requirement is in section 4.1.2.5:

 

 785 Every subject-based statement in the assertion(s) returned to the destination site MUST contain a

786 <saml:SubjectConfirmation> element. The <ConfirmationMethod> element in the

787 <SubjectConfirmation> MUST be set to urn:oasis:names:tc:SAML:1.0:cm:bearer.

 

It seems cut and dry that the SubjectConfirmation has to be there, despite the .xsd defining minOccurs=”0”.  But, we’ve an implementer with a different take an this.

Does the TC have a statement (or guidance) that explains the relationship of the .xsd to the Binding Specification?

Thanks,

--Kent

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Kent Spaulding | CTO

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