Main menu - File - Create MD5-checksums...


Activating the menu item "File → Create MD5-checksums..." or the shortcut "Ctrl+K" opens the dialog "Compute MD5-Checksums", where the MD5-Checksums for all items (files and/or folders) selected in the active panel can be calculated.


Message-Digest Algorithm 5 (MD5) is a widely used cryptographic hash function, that creates a 128-bit hash value (checksum) over any message.

This allows, for instance, to verify the accuracy of downloads. After a successful download of files and/or folders the MD5-sum is communicated in another file. In the dialog "Compute MD5-Checksums" the checksum over the downloaded files and/or folders can be recalculated and compared with the communicated checksum. If both MD5-checksums are identical, the integrity of the downloaded files and/or folders is confirmed - no errors occurred during the download.


The "Compute MD5-Checksums" dialog contains the tabs

the information bar

and the buttons

Tab Operation


Selected item(s)

The content displayed under "Selected item(s)" differs according to the number of items (files and/or folders) selected in the active panel:

If several files (and/or folders) are selected, the number of files (and/or folders) is displayed under "Selected item(s)".

from

The folder from where the items are selected items is displayed under "from".

Target

Include only files of this type:

Store checksums

If this option is checked, all file names, paths and MD5-checksums (of the files listed in the tab "Files") are stored in the file defined in the input field "Target".

If this option is not checked:

Create separate MD5-files for each file

If this option is checked, a separate MD5-file is created for each file listed in the tab "Files".

If this option is not checked, one MD5-file is created containing all all file names, paths and MD5-checksums.

Compare with pattern sum

If the checksum of a file is known (e.g. from a download), it can be entered in this input field.



In this case the integrity of the file is checked after activating the button "Run".

Tab Files

The tab "Files" lists all files for which the checksums have to be calculated.



Initially only the columns "Name" and "Path" are filled.

After activating the button "Run" the column "MD5" is filled.

When an error was detected while calculating the checksums, the additional column "Error message" is shown and filled.

Button

Activating the button reloads all files and folders. This may be useful if they can be processed from various workspaces.

Quick filter bar


The quick filter provides the possibility to decrease the number of files for which the checksums have to be calculated.

After activating the button a selection list is shown, with the last inputs (filters) in this field. Clicking the button activates the highlighted filter.

Tab Settings

Under the tab "Settings" further settings for the "Compute MD5-checksums" process can be defined.



Auto close for successful operation

If this option is checked, the "Compute MD5-checksums" dialog is closed automatically, as soon as all processes are successfully completed.

Auto close for canceled operation

If this option is checked, the "Compute MD5-checksums" dialog is closed automatically, after one process was canceled.

Use uppercase for display the sum

If this option is checked, the characters in the MD5-checksums are shown in capitals.

Count for worker threads

To speed up the MD5-checksum calculation, the number of background processes can be increased. With this several checksums can be calculated parallel.

Save relative paths

If this option is checked, the relative paths are stored instead of the absolute paths.

Information bar: ...files ...folders

In the "Compute MD5-checksums" dialog the information bar (lowest window line) " ...files ...folders" shows the information how many files are to be calculated. On opening the dialog the bar is invisible. Whenever the tab "Files" or the button "Run" are activated, the files to be calculated are loaded and their number is shown. The number of files shown in the information bar can be different from the number shown under "Selected item(s)". The differences may result from:

Button Queue

Pressing the button adds the MD5-checksums calculation operation to the operations queue and starts the processing of the operations queue.

Activating the button in the operation queue bar opens the operations queue dialog.

File operations via the operations queue are described in the chapter Operations queue.

Button Run

After activating the button the MD5-checksums calculation process is started directly for all items to be calculated.

The "Compute MD5-checksums" dialog shows the following modifications:

- If no errors occurred during the calculation:



- If errors occurred during the calculation:



Copy to clipboard

After activating the button the file names, paths and MD5-checksums are copied to the clipboard.

Show only errors

After activating the button only files are shown during their calculation an error occurred.

Calculation progress

The calculation progress is visualized in a progress bar below the item list.

Calculation status of the files

In the item list each file is preceded by an icon that shows the calculation status of the file:

The message bar shows the actually calculated item.

Button Cancel

Activating the button "Cancel", cancels the calculation process and closes the "Compute MD5-Checksums" dialog.