Raspberry Pi security add-on helps evaluate Connected Home over IP spec

The Infineon Optiga Trust-M Evaluation Kit is a Pi add-on kit for evaluating the ZigBee Alliance Connected Home over IP home automation standard. The evaluation kit is based on a Trust-M Shield2Go card equipped with an EAL6+ compliant Trust-M security chip.

Infineon Technologies, best known in these pages for its widely used Optiga TPM security chips, has announced the release of the Raspberry Pi add-on, which features another security technology called Optiga Trust. In particular, the Optiga Trust-M Shield2Go card will be integrated with the Optiga Trust-M security chip, which meets the common criteria certified EAL6+ (high) specification. While the Optiga Trust-M Evaluation Kit can be used to evaluate the Trust-M technology, which is the safety anchor for connecting IoT devices to the cloud, the main goal is to evaluate the ZigBee Alliance Connected Home IP Automation standard.

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Optiga Trust-M Evaluation Kit with Pi (left) and Optiga Trust-M Shield2Go only
(click images to enlarge).

When ZigBee announced the formation of the Connected Home over IP consortium last December as a ZigBee working group, it seemed to have more potential than many other IoT standard groups that had emerged over the past decade. As a first step, the group proposed to develop an open-source protocol to standardize domotica networks using different IP technologies such as WiFi, thread, and Bluetooth, and possibly Ethernet, cellular, and broadband.

She also helped the group to brag against Amazon, Apple, Google, and other home automation heavyweights. Even ZigBee’s rival, Silicon Labs, joined the announcement to resume work on the Z-Wave specification with a more open structure.

In an update published this summer, Connected Home over IP said it has made significant progress in implementing its original WiFi 6 (802.11a/b/g/n/ac/ax) specification, which it plans to release in draft form later this year. The group currently has 145 active companies, including ASSA ABLOY, Resideo, STMicroelectronics, and Tuya, which have joined the Zigbee Alliance’s Board of Directors. Other founders are IKEA, Legrand, NXP, Resideo, Samsung SmartThings, Schneider Electric, Signify (formerly Philips Lighting), Somfy, and Wulian.

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Connection via IP architecture (left) and diagram showing Optiga Trust-M’s connection to host
(click images to enlarge).

Infineon, a member of the Connected Home program, offers the Optiga Trust-M evaluation kit as a platform for the evaluation of the Connected Home over IP platform, especially in the field of security. Infineon has some experience with Pi in the form of the MERUS REAL audio amplifier, which the company announced in May and which uses the MERUS MA12070P amplifier.

The Optiga Trust-M Evaluation Kit is designed to test WiFi and Bluetooth connections over a secure connection. Security features such as X.509 certificates, device authentication, ECC-256-384 and RSA 2048, key management, secure storage, and I2C encrypted communication between the host and Optiga Trust M are included. Optiga Trust M Shield2Go with the Optiga Trust-M chip offers an EAL6+ controller and a shielded I2C interface for encrypted connections.


Cryptographic support includes NIST ECC P256/P384, SHA-256, TRNG, DRNG, and RSA 1024/2048. The board of directors can hibernate on zero energy, says Infineon. An adapter is included for the Raspberry Pi.

The Optiga Trust-M evaluation kit complements the other Trust-M kits, including the Optiga Trust M development kit. This first kit contains an XMC1400 2GB microcontroller board and an Inventek WiFi/BLE module. The product can interact with cards such as Infineon Shield2Go, MicroElectronic Click, and Adafruit’s Feather Wing.

Additional information

No information has been provided about the prices or availability of the Optiga Trust-M Evaluation Kit. We saw the product announced at the EENew Embedded Europe. For more information, please visit the Infineon product page.

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