"Generate a private and public key pair for the WireGuard server:"
"umask 077 wg genkey | tee privatekey | wg pubkey > publickey"
"This will save both the private and public keys to your home directory; they can be viewed with cat privatekey and cat publickey respectively."
"Create the file /etc/wireguard/wg0.conf and add the contents indicated below. You’ll need to enter your server’s private key in the PrivateKey field, and its IP addresses in the Address field."
That's not within reach of your average computer user.