computeToken example

  public function get($value = '') {
    $seed = $this->sessionMetadata->getCsrfTokenSeed();
    if (empty($seed)) {
      $seed = Crypt::randomBytesBase64();
      $this->sessionMetadata->setCsrfTokenSeed($seed);
    }

    return $this->computeToken($seed, $value);
  }

  /** * Validates a token based on $value, the user session, and the private key. * * @param string $token * The token to be validated. * @param string $value * (optional) An additional value to base the token on. * * @return bool * TRUE for a valid token, FALSE for an invalid token. */