IoT, Iot Security, Cybersecurity, Mqtt, Cryptography.
a minimum. Importantly, though, the CN of this server certificate should be the broker’s FQDN. openssl genpkey -algorithm ED25519 -out server.key openssl req -new -nodes -key server.key \ -subj '/CN=mqtt.example.com' -out server.csr openssl x509 -req -in server.csr -CA rootCA.crt -CAkey rootCA.key