//Workaround for PHP bug https://bugs.php.net/bug.php?id=69197
if (empty($this->sign_extracerts_file)) {
$sign = @openssl_pkcs7_sign(
//Workaround for PHP bug https://bugs.php.net/bug.php?id=69197
if (empty($this->sign_extracerts_file)) {
$sign = @openssl_pkcs7_sign(