This is meant for Ubuntu 20.04.4 LTS and Solokey Somu
The purpose of the key is backup key (in case all my Yubikeys and smart phone get lost), hence the resident SSH key and 2FA setup for the Github account.
- install the solo1-cli - note that this currently requires solokeys/solo1-cli#152 to work at all:
python3 -m venv env
. ./env/bin/activate
pip install solo1
- update the firmware (I had to try twice to get the firmware updated successfully). This is needed to successfully generate the ed25519-sk SSH key.
solo1 key update
- list the key
solo1 ls
- set the PIN (requires a workaround for solokeys/solo1-cli#156 - different way of installing the solo1 Python package than above)
solo1 key set-pin
- generate the SSH keys:
ssh-keygen -t ed25519-sk -O resident -f ~/altssh/id_ed25519_sk_solo
- register the SSH public key on Github
- register the Solokey as 2nd factor on Github
To recover the SSH key pair:
ssh-keygen -K
This will generate the files with public key and private key handle in the current directory (named id_ed25519_sk_rk{,.pub}). The process will require the PIN set above.