The MAXREFDES155# from Maxim Integrated is a reference design for IoT (internet-of-things) embedded security, built to authenticate and control a sensing node using elliptic-curve-based public-key cryptography with control and notification from a web server.

MAXREFDES155# includes an ARM® mbed™ shield and attached sensor endpoint. The shield contains a DeepCover® ECDSA/SHA-2 coprocessor (DS2476Q+U), Wifi communication, LCD push-button controls, and status LEDs. The sensor endpoint contains a DeepCover ECDSA/SHA-2 authenticator (DS28C36Q+U), IR-thermal sensor, and aiming laser for the IR sensor. The sensor endpoint and shield is attached together using a 300 mm cable.

The MAXREFDES155# is supplied with a standard Arduino® form-factor shield connector for immediate testing using the mbed board, MAX32600MBED#. The combination of these two devices represents an IoT device. Communication to the web server is accomplished with the shield Wifi circuitry. Communication from the shield to the attached sensor module is accomplished over I²C. The sensor module represents an IoT endpoint that generates small data with a requirement for message authenticity/integrity and secure on/off operational control.

NOTE: MAXREFDES155# requires a separate purchase of the mbed platform MAX32600MBED#.