/**
* Check if a totp corresponds to a key and a stamp.
*
* @param string $key
* @param int $totp
*
* @return bool Return true if the totp corresponds to the key and the stamp provided
*/
public function validate($totp, $key, $stamp = null)
{
if ($stamp === null) {
$stamp = $this->timeManager->getCurrentStamp();
}
if (!preg_match('/^[0-9]{6}$/', $totp)) {
return false;
}
$totp = intval($totp);
// Search the stamp corresponding to the totp provided
for ($st = $stamp - $this->window; $st <= $stamp + $this->window; ++$st) {
if (($res = TOTPGenerator::generate($st, $key)) == $totp) {
return $st;
}
}
return false;
}
/**
* Alias of {@link TOTPGenerator::generate()}.
*/
public static function generateTOTP($stamp, $key)
{
return TOTPGenerator::generate($stamp, $key);
}