IoT, Iot Security, Cybersecurity, Mqtt, Cryptography.
version 1.1.1 or greater (1.1.1l was used here), and a relatively recent version of mosquitto (in this case 2.0.12). Also I assume that you have some general familiarity with TLS (and PKI), as well as MQTT. First, generate your root certificate authority (CA) with an Ed25519 key. Some reasons why