/**
* Builds a hash of the owner and client for identification
* purposes
*
* @param Storable $owner the Storable object representing the resource
* owner
* @param Storable $client the Storable object representing the
* client
* @return string the hash
*/
public static function buildID($owner, $client)
{
$owner_id = $owner->getStoreType() . ':' . $owner->getStoreID();
$client_id = $client->getStoreType() . ':' . $client->getStoreID();
$opaque = new OpaqueIdentifier();
return $opaque->generate($owner_id . ':' . $client_id);
}
/**
* Generates a pairwise identity for this user, based on a specified
* sector identifier.
*
* A *pairwise identity* is an opaque string that is unique to one or more clients
* (identified by a common `$sector_identifier` parameter) which identifies the
* user to those clients. Issuing a pairwise identity means that the user's
* SimpleID user name is not exposed to the clients.
*
* @param string $sector_identifier the client's sector identifier.
* @return string the pairwise identity
*/
public function getPairwiseIdentity($sector_identifier)
{
$opaque = new OpaqueIdentifier();
return 'pwid:' . $opaque->generate($sector_identifier . ':' . $this->uid);
}
/**
* Returns a relatively unique cookie name based on a specified suffix.
*
* @param string $suffix the cookie name suffix
* @return string the cookie name
*/
public function getCookieName($suffix)
{
if (self::$cookie_prefix == NULL) {
$opaque = new OpaqueIdentifier();
self::$cookie_prefix = substr($opaque->generate('cookie'), -9) . '_';
}
return self::$cookie_prefix . $suffix;
}