See T5758. The workaround is not to set a reader-port.

Downgraded the gnupg to 2.2.33 using this installer and I am now able to successfully open the Kleopatra GUI.

Should also note that once the GUI is opened, GnuPG's smartcard deamon (32 bit) transitions to Very high power usage and appears stuck there, consuming a full logical core's worth of CPU time.

Now, unwrapping supports both cases (KW and KWP).

For unwrapping, it is good if we can support "automatic" unwrapping, apply W^-1 and check the first 8 octets to see if it's KW or KWP.

Thanks. Looks good to me (both merged changes and the above proposal). In addition to the changes proposed above, we certainly need to update the documentation about this, probably also the FSM diagram.

The problem was the error handling.
I didn't apply the patch directly, but improved the code paths.

And I'm testing following:

The "at first" change done.

At first, I think that we need to change the way how libgcrypt rejects non-approved cipher/md/mac/pk.

We have full Unicode support on the command line since 2.2.28 (2021-06-10)