[okular] [Bug 501175] New: Digital signature stopped working after certificate update

[Dan]

https://bugs.kde.org/show_bug.cgi?id=501175

            Bug ID: 501175
           Summary: Digital signature stopped working after certificate
                    update
    Classification: Applications
           Product: okular
           Version: 21.12.3
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: danvstoian at gmail.com
  Target Milestone: ---

Created attachment 179199
  --> https://bugs.kde.org/attachment.cgi?id=179199&action=edit
empty select certificate window

SUMMARY
Digital signature feature stopped working after certificate update on usb token

STEPS TO REPRODUCE
1. Ubuntu 22.04.5 LTS - Regularly using USB token with Thales Safenet
Authentication Client, pkcs11 module configured in Firefox-esr, backend
configured in Okular -> Digitally sign works every time on pdf files.
2. Certificate expires, is renewed, installed on the token and Digitally sign
stops working:
3. After clicking Digitally sign -> selecting a rectangle area -> entering
token password -> small window shows up to select the certificate to use but no
certificate can be selected (see screenshot)
4. If clicking Cancel, process exits, no signature applied; if clicking OK,
window shows up requesting to enter certificate password (I have no knowledge
of any password); any input returns back to  requesting to enter certificate
password

OBSERVED RESULT
5. Unable to Digitally sign pdf files.

EXPECTED RESULT

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Ubuntu 22.04.5 LTS

ADDITIONAL INFORMATION
USB token works otherwise for authentication online or with other software.

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