Industrial IoT reference design secures data chains

August 30, 2016 // By Julien Happich
The MAXREFDES143# embedded security reference design from Maxim Integrated Products is aimed at guaranteeing sensor data authenticity and integrity along the entire industrial data chain, from transducer to the cloud.

The reference design’s sophisticated architecture and components, Arduino-compatible hardware interface, and ARM mbed libraries support simplifies development of secure, uncorrupted, and authenticated sensor-to-web data. It is well suited for analog sensor node and data authentication in factory automation and industrial processing applications.

The reference design’s two-stage hierarchical architecture consists of a shield that communicates to a web server, and a protected sensor node for data acquisition and authentication. The shield includes a Wi-Fi module; a DS2465 secure coprocessor for offloading SHA-256 cryptographic computation; 1-Wire® and I²C interfaces; user-interface LCD, LEDs, and pushbuttons; along with alarm and logging functions. The sensor node contains a DS28E15 secure authenticator, DS7505 temperature sensor, and MAX44009 light sensor.

A free evaluation web server provides an immediate out-of-the box implementation for real-time data collection and storage of sensor data. The device's SHA-256 coprocessor offloads data authentication task; securely stores node authentication key; each node has a unique key.

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