Industrial IoT reference design protects sensor data

Support for Arduino and ARM mbed platforms aids industrial IoT prototyping, says Maxim Integrated. The MAXREFDES143 embedded security reference design protects against counterfeit sensor data, guaranteeing authenticity and integrity along the entire data chain, from transducer to the cloud, claims the company.

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 co-processor 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.

According to the company, using the hardware and source code to implement an authenticated node solution and web server interface significantly reduces development time.

A free-of-charge evaluation web server provides an immediate out-of-the box implementation for real-time data collection and storage of sensor data.

The SHA-256 co-processor offloads data authentication task and securely stores node authentication key.

The IoT embedded security reference design is available at the company’s website and franchised distributors. Hardware and firmware design files are free and available online.


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