P.S.3. Additionally, I could find X509 certificate sample, but it is using the Paho Mqtt Client and I am not able reproduce it on Arduino.

P.S.2. I am using Arduino Uno with Atmega328P with integrated ESP8266 chip. Additionally, I am using Arduino IDE 1.8.19 and installed the Azure IoT SDK C library (and some other required ones).

P.S.2. I am using Arduino with Atmega328P with integrated ESP8266 chip, but working only with the ESP8266. Additionally, I am using Arduino IDE 1.8.19 and installed the Azure IoT SDK C library (and some other required ones).

I have hard times finding a solution, or writing my own, where I can connect ESP8266 with Azure IoT Hub Device via X509 certificate. Currently, I can connect using the symmetric key connection to my device, but I have devices that I want to authenticate with X509 certificate.

I will be happy to find a solution, because I am in a hurry for my thesis.

I would like to connect ESP8266 with Azure IoT Hub Device via X509 certificate. Currently, I can connect using the symmetric key connection to my device, but I have devices that I want to authenticate with X509 certificate.