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Subject: MTI security models for SOAP Binding
The SAML SOAP binding makes an appearance in 4 profiles: (1) Web SSO Profile (via the Artifact Resolution Profile) (2) AssertionQuery/Request Profile (AttributeQuery, AuthorizationDecisionQuery, AssertionIDRequest) (3) NameID Mgmt (4) Single Logout Conformance-04 does not as yet include any MTI security models for the SOAP binding. Proposal to add text to conformance-04 (starting at line 134) 2.3 Security models for SOAP Binding The following security models are MTI for profiles that use the SOAP binding. The SAML requester and responder MUST implement the following authentication methods: 1. No client or server authentication. 2. HTTP basic authentication [RFC2617] with and without SSL 3.0 or TLS 1.0. The SAML requester MUST preemptively send the authorization header with the initial request. 3. HTTP over SSL 3.0 or TLS 1.0 (see Section 6) server authentication with a server-side certificate. 4. HTTP over SSL 3.0 or TLS 1.0 mutual authentication with both server-side and a client-side certificate. If a SAML responder uses SSL 3.0 or TLS 1.0, it MUST use a server-side certificate.