[okular] [Bug 435379] New: Does not show TSA timestamp signature

[Antonis Tsolomitis]

https://bugs.kde.org/show_bug.cgi?id=435379

            Bug ID: 435379
           Summary: Does not show TSA timestamp signature
           Product: okular
           Version: 20.12.3
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: antonis.tsolomitis at gmail.com
  Target Milestone: ---

SUMMARY
Does not show TSA timestamp signature

STEPS TO REPRODUCE
1. Sign a pdf document with jsignpdf have enabled timestamping (TSA). Say from
the freetsa.org. Click TSA timestamp on the first jsignpdf screen
2. In the resulting window enable TSA timestamping with server
https://freetsa.org/tsr   and hash method SHA-512
3. Sign the document

OBSERVED RESULT
The signed pdf opens in Okular and shows the user signature but there is no
indication that there is a TSA timestamp


EXPECTED RESULT
PDF signature must show that the time is not the time of the user's computer
but that of the TSA server.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

I am not sure if there is ANY linux tool, even commandline, that can check a
TSA timestamp. I have tried pdfsig on the commandline. No help.

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