Communication
A lightweight SSL/TLS library written in ANSI C and targeted for embedded, RTOS, and resource-constrained environments.
Manual: https://www.wolfssl.com/documentation/manuals/wolfssl/index.html.
Maintainer: wolfSSL inc
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.