function zssh_generate_privkey4
{
  ssh_node="$1"
  zshlibs_log zssh_client "checking keys for peer $ssh_node …"
  local newkey=$zssh_private_keys/$ssh_node.key
  if ! [[ -s $newkey ]]
  then
    zshlibs_log zssh_client "generate key for $ssh_node"
    ssh-keygen -t ed25519 -N '' -C "$ssh_host($USER@$HOST) for $ssh_node" -f $newkey >> "${HOME}/.log/ssh-keygen.log"
    if [[ "$ssh_node" == "$zssh_host" ]]
    then
      zshlibs_log zssh_client "Self accepting key: $ssh_node"
      cat "$newkey.pub" >> ${HOME}/.ssh/authorized_keys
    fi
  fi
}