jPDF Secure is a library created in Java that will allow you to change the security settings of PDF documents, being able to encrypt and decrypt those PDFs, as well as the permissions of each of them.
PDF documents that can be processed by jPDF Secure do not have to be only on the hard disk, as it also allows you to apply the library to network disks, URL addresses, and so on. No additional application is required for its operation and it has valid versions for any platform: Windows, Mac and Linux.
Some of the permissions that jPDF Secure allows to establish or withdraw are the following: permissions for printing, modification, permissions to copy the content, to fill in the forms, and so on.
You can free download jPDF Secure 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.