Other
Rhys Weatherley's arduinolibs Crypto library.
All cryptographic algorithms have been optimized for 8-bit Arduino platforms like the Uno.
Maintainer: Dr. Brandon Wiley brandon@operatorfoundation.org
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.