<?php
$user = $vars['user'];
if ($user) {
	$options = array('types'=>'object','subtypes'=>'sslkey','owner_guid'=>$user->getGUID());
	$userkeys = elgg_get_entities($options);
	foreach($userkeys as $key) {
?>
<rsa:RSAPublicKey>
        <cert:identity rdf:resource="#me"/>
        <rsa:public_exponent cert:decimal="<?php echo $key->exponent; ?>"/>
        <rsa:modulus cert:hex="<?php echo $key->modulus; ?>"/>
</rsa:RSAPublicKey>
<?php
	}
}
?>