Feature Request: Add support for transferring keys to smartcard

[sjoerger]

GPgfrontend seems to have most of the functionality that Kleopatra offers but I do not see the ability to transfer keys to a smartcard. Having recently setup my keys on two Yubikeys using a combination of gpg command line and Kleopatra, using the gui made this process a lot easier. It would be nice to have the transfer to smartcard functionality in Gpgfrontend as well.

[saturneric]

Yes, I have encountered the same issue myself. Currently, GpgFrontend only supports generating new keys directly on the smartcard, which is sufficient for some basic use cases. However, in many real-world scenarios, I also need to move an existing key to the smartcard rather than generate one from scratch—so I fully understand the value of this feature.

I will definitely look into adding “move to card” functionality. The main technical challenge right now is reliably determining whether a specific key can actually be moved to a smartcard, as some algorithms may not be supported by the card in use. That said, this feature is already on my TODO list, and—optimistically—it may appear in a future nightly build after some further investigation.

[jbar]

I am reading all the issues (before asking maybe for images support https://www.rfc-editor.org/rfc/rfc9580.html#name-image-attribute-subpacket).

But concerning the current issue (putting secret into yubikeys), I would like to put the light on projects developed by our team :

https://foopgp.org/solutions/activity-rd/
https://foopgp.org/blog/2025-09-12-welcome-djibian/

Note that pgpid is now being rewrited in the bash-libs (back-end), and we are also developing a front-end to strongly improve UX and reach more user.