Trust M Click

How does it work?

As embedded systems (e.g. IoT devices) are increasingly gaining the attention of attackers, Trust M Click offers the OPTIGA™ Trust M1 from Infineon as a turnkey security solution for industrial automation systems, smart homes, consumer devices and medical devices. This high-end security controller comes with full system integration support for easy and cost-effective deployment of high-end security for your assets.

Trust M Click comes with up to 10kB user memory that can be used to store X.509 certificates and data. OPTIGA™ Trust M1 is based on Common Criteria (CC) Certified EAL6+ (high) hardware enabling it to prevent physical attacks on the device itself and providing high assurance that the keys or arbitrary data stored cannot be accessed by an unauthorized entity.

All communication is done through I2C bus which supports a highspeed I2C communication interface of up to 1MHz (FM+). Trust M Click also features two FETs for disconnecting/connecting power to IC using EN pin on mikroBUS™ which allows it to go to hibernation.

During chip production, unique asymmetric keys (private and public) are generated. The public key is signed by customer specific CA and the resulting X.509 certificate issued is securely stored in the OPTIGA™ Trust M1. Special measures are taken to prevent the leakage and modification of private key material at the Common Criteria Certified production site.

All of this features available on Trust M Click makes it perfect solution for industrial automation systems, smart homes and consumer devices in broad range of use cases necessary to protect the authenticity, integrity and confidentiality in your device: mutual authentication, secured communication, data store protection, life-cycle management, secured updates, and also platform integrity protection.

Specifications

Pinout diagram

This table shows how the pinout on Trust M Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	EN	Enable
Reset	RST	2	RST	INT	15	NC
	NC	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	SCL	I2C Clock
	NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

Software Support

MikroElektronika does not provide software support for this Click board™ in the form of libraries, functions, or example code at this moment. The software support is provided by our development partner on this project Infineon. Please visit the Infineon Github repository to get the full software support and Command Line Interface (CLI) for Optiga Trust M device.