[okular] [Bug 474888] New: Signing requires (empty) password in document that has password-restriction for modification

[Oliver Sander]

https://bugs.kde.org/show_bug.cgi?id=474888

            Bug ID: 474888
           Summary: Signing requires (empty) password in document that has
                    password-restriction for modification
    Classification: Applications
           Product: okular
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: oliver.sander at tu-dresden.de
  Target Milestone: ---

Created attachment 161878
  --> https://bugs.kde.org/attachment.cgi?id=161878&action=edit
The problematic document

The attached pdf file contains a signature form field.  However, when trying to
sign it I am asked for a password.  Using the empty string as the password
allows me to sign the document.

The reason is apparently that in this document the *modification* of the
document is password-restricted.   Please see the attached Acrobat security
settings (German only, sorry. The blue line says: "Admissible changes:
Filling-out form fields and signing existing signature fields".)

SOFTWARE/OS VERSIONS
Betriebssystem: Debian GNU/Linux 12
KDE-Plasma-Version: 5.27.5
KDE-Frameworks-Version: 5.103.0
Qt-Version: 5.15.8

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