Posted by a ceTe Software moderator
Hi,
Encrypted PDFs can have an ower and user password. If the user password is blank (""), it is possible to open an encrypted PDF without specifying a password. If you want to edit or merge an encrypted PDF though, you will need to specify the owner password. In order to work with an encrypted PDF in our product, you need to specify the owner password.
Thanks,
ceTe Software Support Team