As with GitHub, you can also deposit your (Nitrokey) SSH key at GitLab.com, by navigating to Preferences -> SSH Keys. Now verify that the key is working: $ ssh -T git@gitlab.com Don’t forget to check that the shown fingerprint matches the one on this site. Now if your key is uploaded correctly, the Nitrokey needs to be plugged in, and you will potentially be asked to enter your Nitrokey PIN. Read more

Here is a short description on how I use my Nitrokey Pro to do Git operations on my GitHub repositories. Prepare your SSH client as described here. The first step is to deposit the SSH pubkey at your GitHub profile. Go to Settings -> SSH and GPG keys and click on New SSH key. Set the title to Nitrokey and fill the Key field with your SSH key that you can dump to console with the following command: Read more