Install ksshaskpass by entering the following commands in the terminal:
sudo apt update sudo apt install ksshaskpass
Description:
interactively prompt users for a passphrase for ssh-add
A version of ssh-askpass with KWallet support.
Homepage: https://projects.kde.org/projects/kde/workspace/ksshaskpass
Version: 4:5.12.4-0ubuntu1
Section: universe/utils