In my own automation system I have to encrypt data transferred between sensor and main controller (data transfers via twisted pair).
For this reason, I need a special devices - encryption gateways (one gateaway installs on sensor-side, another on controller-side). These gateways realize following algorithm:
Receive some data from sensor (via discrete input);
Encrypt data using AES;
Transfer encrypted data to controller-side gateway.
Receive encrypted data from sensor-side gateway;
Transfer data to controller (via discrete output).
So, I need MCU with hardware accelerated AES, LaunchPad kit and Energia IDE support.
From MSP portfolio I have chosen two models: MSP432P401R and MSP430FR5994 (MSP430FR5969 and MSP430FR6989 also meet my criteria). What is the best solution suitable for me and my goal?
Thank you for your help!