/**
* Calculate the URL safe base64 encoded SHA1 hmac of a string.
*
* @param string The string to sign
* @param string The key
* @return string The signature
*/
public static function base64_hmac($value, $key)
{
return Pluf_Utils::urlsafe_b64encode(hash_hmac('sha1', $value, $key, true));
}
