<md:KeyDescriptor xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata" use="signing">
  <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
    <ds:KeyName>IdentityProvider.com SSO Key</ds:KeyName>
  </ds:KeyInfo>
  <md:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-1_5"/>
</md:KeyDescriptor>