Affinity Publisher - Exports as a PDF to file BUT how to ........

[CleanLivin]

I want to send my poetry book with some photos in it to two types of friends that are helping me with proofing:
1.  Encrypt with a password the Affinity Publisher file to prevent ANYONE from opening the PDF file without the password BUT let them be able to edit it and save as a NEW doc with the same encryption password.
I have one person that is a wizard at catching details and want to let her be able to edit it and then save it again encrypted back to me where I am able to edit it!

2.  Encrypt with a password the Affinity Publisher file BUT PREVENT ANY EDITING OF THE FILE OR EVEN "COPY" AND "PASTE" OF THE PDF FILE CONTENTS into Word, etc.

Ideally, this can be done with Freeware or something that is not subscription and reasonable in cost - certainly less than $50.00.

[Blende21]

The pdf export of Publisher is meant to create pdf files that printing companies can use (which is different to what you use to make your home printer work). If you want to encrypt such a pdf, export it from Publisher and use another tool for the encryption. I have used pdf creator in the past, that has a free version (Windows). On the Mac I run PDF expert, so I have no need for another pdf program.

I do not know any way to protect an afpublisher file the way you want. You can encrypt a whole file, folder or drive (use 7-zip to create an encrypted ZIP archive). But once it is opened, it is editable, you can copy stuff etc.

Although it is possible to restrict the use of a pdf pretty far, it is a fact that the pdf protection was broken in the past, and only offers a relative security for the content. Probably the hardest thing to copy in high quality is a low quality image (where a lot of information was destroyed by downgrading it) combined with a watermark. Not nice to look at, but does not serve for reusing it either.