Fascinating, I am seeing this exact same issue with SSH keys. When using ssh-add these keys will load into the agent without a problem, but I cannot import them into Seahorse. The files have been generated with OpenSSH, but their file names aren't following the standard id_<algo> and id_<algo>.pub pattern ...
I also followed the advice from that AskUbuntu answer to generate accompanying .pub files, but that didn't work either. Seahorse also outright refused to import the id_ed25519, whereas the id_rsa worked previously. This seems at least inconsistent. Package versions: gnome-keyring 3.28.0.2-1ubuntu1.18.04.1 seahorse 3.20.0-5 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-keyring in Ubuntu. https://bugs.launchpad.net/bugs/1771880 Title: Seahorse unable to import pkcs12 certificates Status in seahorse: New Status in gnome-keyring package in Ubuntu: Confirmed Status in seahorse package in Ubuntu: Confirmed Status in gnome-keyring package in Fedora: New Status in seahorse package in Fedora: Unknown Bug description: seahorse 3.20.0-5 / gnome-keyring 3.28.0.2-1ubuntu1.18.04.1 / Ubuntu 18.04 LTS / GNOME 3.28.1 When trying to import a certificate into seahorse/gnome-keyring on Ubuntu 18.04, seahorse GUI application shows the 'import' button greyed out, while mouse hovering the "import" button shows the message "Cannot import because there are no compatible importers". This problem doesn't occur on Ubuntu 16.04 LTS (Seahorse 3.18.0), as I've just tested on my wife's laptop, but happens in my Laptop with Ubuntu 18.04 LTS (Seahorse 3.20.0-5). Because that problem, it's not possible to digitally sign documents with LibreOffice. To manage notifications about this bug go to: https://bugs.launchpad.net/seahorse/+bug/1771880/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

