[Libreoffice-bugs] [Bug 143134] New: PDF restrictions in signed PDF documents

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=143134

            Bug ID: 143134
           Summary: PDF restrictions in signed PDF documents
           Product: LibreOffice
           Version: 7.1.0.1 rc
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Printing and PDF export
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: renatosen at gmail.com

Description:
This is an inquire about digital signatures on PDF files. 
First, I would like to congratulate about the well done job which delivers
digital signature to PDF at LibreOffice. The process has been implemented by a
very good functionality; however, The departament of my city is not accepting
the signed PDF once they intend to add notes and new signatures to the same
PDF. Retrieving permissions of the signed PDF in another PDF reader, I realized
that new comments and signatures are not allowed in their software. Some
permissions that had been allowed before the signature process became
restricted after the signature at LibreOffice. I also realized that their
software are opening PDF in read-only status.
To sum up, the signed PDF generated have been flagged with no comments, no new
signatures and no editable permissions. Therefore, I would request you to
provide new flags available through checkbox selection in PDF exportation or
PDG signing process.  

PS.: a ICP Brasil token was used in the process.

Steps to Reproduce:
Steps to Reproduce: 

1. Export PDF;
2. Sign PDF;
3. Open PDF in Third-part software.

Actual Results:
Actual Results:
Third-party are not allowed to add comments or new digital signatures.

Comments are not allowed;
and the following message in Third-party software "The document was opened in
read-only mode"

Expected Results:
Expected Results:

It is expected that the Third-party could add new signatures and comments after
PDF signing at LibreOffice.



Reproducible: Always


User Profile Reset: No



Additional Info:
Other Information:

It would be great if we could deal with PDF restrictions/permissions flags.

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