SSH host keys for openssh-server setup.
ssh-keygen -t ecdsa -f ssh_host_ecdsa_key -q -N ""
ssh-keygen -t ed25519 -f ssh_host_ed25519_key -q -N ""
ssh-keygen -t rsa -f ssh_host_rsa_key -q -N ""
ssh-keygen -t rsa -f ssh_wden_rsa_key -q -N ""
chmod 600 ssh_*