[dolphin] [Bug 503153] New: Add automatic checksum verification for copy/move operations in split view (or allow pane targeting via Service Menu)

[414b49]

https://bugs.kde.org/show_bug.cgi?id=503153

            Bug ID: 503153
           Summary: Add automatic checksum verification for copy/move
                    operations in split view (or allow pane targeting via
                    Service Menu)
    Classification: Applications
           Product: dolphin
           Version: 24.12.3
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: wishlist
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: 414b49 at mailbox.org
                CC: kfm-devel at kde.org
  Target Milestone: ---

Hello KDE team,

I would like to suggest a feature for Dolphin:

When using Dolphin in split view mode (two panes), it would be very helpful if
file copy (F6) and move (Shift+F6) operations could include an automatic
checksum verification after the operation completes.

Details:

When copying or moving a file from one pane to the other, Dolphin should
automatically calculate a checksum (e.g., BLAKE3) of both the source and the
destination file.

After the transfer, Dolphin would compare the checksums to confirm the
integrity of the copy/move operation.

If a file with the same name already exists:

If the checksum matches: display a small notification that the file already
exists and is identical (no need to copy).

If the checksum differs: ask the user whether to overwrite, skip, or rename the
incoming file.

Ideally, checksum calculation should happen in the background to keep the UI
responsive.

A small visual indicator (success/failure) or a log window could display the
verification results.

Fallback request (if full integration is not possible):
If implementing full automatic checksum verification inside Dolphin is not
feasible at the moment,
please add functionality to Service Menus that allows detecting:

The source pane (active pane)

The target pane (the other pane)

This way, users could create their own checksum-verified copy/move operations
via custom Service Menus, safely working between the two panes.

Why? Today, file operations are assumed to succeed, but especially when
transferring between different devices or media, silent data corruption can
happen. An optional checksum verification would greatly improve data safety,
and would be a huge quality boost for Dolphin as a professional file manager.

Thank you very much for considering this!

Distribution Nobara41 (Fedora41)
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0 
Qt Version:  6.8.2
Kernel-Version: 6.14.2
Grafik-Platform: Wayland
Vulkan Instance Version: 1.4.309
GPU: Nvidia RTX4070 Super
CPU: AMD 3900x
Mainboard: Asus ROG Strix X570-E GAMING

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