[kmymoney] [Bug 481645] New: XML-Storage plugin unable to decrypt from a security key (probably should use "pinentry-qt" for decryption)

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https://bugs.kde.org/show_bug.cgi?id=481645

            Bug ID: 481645
           Summary: XML-Storage plugin unable to decrypt from a security
                    key (probably should use "pinentry-qt" for decryption)
    Classification: Applications
           Product: kmymoney
           Version: 5.1.3
          Platform: Microsoft Windows
                OS: Microsoft Windows
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: database
          Assignee: kmymoney-devel at kde.org
          Reporter: ex9qee8u at anonaddy.me
  Target Milestone: ---

Created attachment 165986
  --> https://bugs.kde.org/attachment.cgi?id=165986&action=edit
here you see "explorer... .jpg" from KMyMoney's XML-Storage plugin. Other two
are when trying to decrypt with Kleopatra or within application with SmartCard
/ security key

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
When decrypting PGP encrypted vault with a security key, I get following error: 
### Cannot read the file: path/to/my/file
/home/abuild/rpmbuild/BUILD/kmymoney-5.1.3/kmymoney/plugins/xml/xmlstorage.cpp:140

When I use OpenPGP keys that are stored on the device, so that cleopatra lists
them, it works fine. 
If I have the same private keys on the security key (such as nitrokey), it
gives me this error.

*Please read additional information.*

STEPS TO REPRODUCE
1. Generate keys on device or directly on the security key / smartcard.
2. When exporting the vault to XML, encrypt it with public key, whose private
key resides only on the smartcard /security key.
3. Try to open the vault, the error appears.

OBSERVED RESULT

The same as in Summary

EXPECTED RESULT
The same result as with private key stored on device.


SOFTWARE/OS VERSIONS
Windows: 10 Pro
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I tried to achieve this with other programs that support PGP encryption and it
worked.
I think the reason for this is the version of gpg interface used by plugin. I
think this is correct, because the UI looks much older than when I'm trying on
other programs. It may be because the GPA is not shipped within gpg4win
anymore. Probably if Kleopatra would be used for decryption, it should work. 
If you look at screenshots the plugin KMyMoney uses is called "pinentry" and
kleopatra uses "pinentry-qt".

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