<saml:AuthnContext xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">
  <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
  <saml:AuthnContextDecl xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" xmlns:ssp="urn:x-simplesamlphp:namespace" ssp:attr1="testval1">
    <ssp:AuthenticationContextDeclaration>
      <ssp:Identification nym="verinymity">
        <ssp:Extension>
          <ssp:NoVerification/>
        </ssp:Extension>
      </ssp:Identification>
    </ssp:AuthenticationContextDeclaration>
  </saml:AuthnContextDecl>
  <saml:AuthenticatingAuthority>https://idp.example.com/SAML2</saml:AuthenticatingAuthority>
</saml:AuthnContext>