Respect the ForceAuthn attribute in SAML AuthnRequests#5644
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orenyk
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Nov 25, 2021
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This is mostly copied from the OIDC implementation of prompt=login, minus checking for SP handoff bounces (which I wasn't sure applied here).
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The SAML specification (section 3.4.1) includes an attribute `ForceAuthn` for the `AuthnRequest` element that can be used by an SP to require that a user be authenticated again, rather than relying on a previous security context. This change allows the IdP to respect that attribute and force authentication when an SP includes `ForceAuthn='true'` in the SAML request.
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The SAML specification (section 3.4.1) includes an attribute
ForceAuthnfor theAuthnRequestelement that can be used by an SP torequire that a user be authenticated again, rather than relying on a
previous security context. This change allows the IdP to respect that
attribute and force authentication when an SP includes
ForceAuthn='true'in the SAML request.Blocked on 18F/saml_idp#50