LetsTrust TPM for Raspberry Pi
Authenticate devices and securely store encryption keys. Featuring the Infineon Optiga™ SLB 9672, this compact add-on brings hardware security and true random number generation to the Raspberry Pi.
Available with a lead time
Expect dispatch between Feb 11 and Mar 09
The LetsTrust TPM is a specialised hardware security module based on the Infineon Optiga™ SLB 9672 chip, specifically engineered for the Raspberry Pi Single Board Computers. It functions as a dedicated cryptographic co-processor (TPM 2.0), adding a robust layer of hardware-based security to your single-board computer projects by adhering to the Trusted Platform Module 2.0 specification.
Generating high-entropy random numbers or storing sensitive private keys on a standard SD card can leave IoT devices vulnerable to software attacks and low-entropy generation issues. This module solves that by offloading cryptographic operations to a dedicated secure chip. It provides a True Hardware Random Number Generator (TRNG) for solid encryption keys and secure storage for authentication certificates, ensuring your device's identity cannot be easily cloned or compromised.
Designed and manufactured in Germany, the board features a compact 2x5 header footprint that integrates seamlessly with the Raspberry Pi GPIO. It is built to fit inside standard cases without obstructing adjacent pins, using a PCB design that allows for both header plugging, or direct soldering. With native Linux kernel support (4.14.85+), it offers a reliable, industrial-grade security solution for edge computing and IoT gateways.
Key Features
- Industrial-Grade Security: Protects your data with the Infineon Optiga™ SLB 9672 TPM 2.0 chip, offering Common Criteria EAL4+ and FIPS 140-2 certification for high-assurance environments.
- True Randomness: Generates high-quality cryptographic keys using a built-in True Hardware Random Number Generator (TRNG), overcoming entropy starvation often faced by devices.
- Universal Compatibility: Fits all Raspberry Pi models with a 40-pin GPIO header (from Pi Zero to Pi 5).
- Hardware-Based Key Storage: Securely stores encryption keys, certificates, and passwords within the hardware, protecting them from software-based extraction attacks.
- Plug-and-Play Integration: Supported natively by the Raspberry Pi OS kernel (via device tree overlays), requiring no custom drivers for basic operation.
Specifications
| Property | Specification |
|---|---|
| Chipset | Infineon Optiga™ SLB 9672 TPM 2.0 |
| TPM Specification | TPM 2.0 Rev. 01.59 |
| Interface | SPI (uses GPIO pins 17–26) |
| Hardware Interrupts | Supported (increases driver performance) |
| Operating Voltage | 3.3V (supplied via GPIO) |
| Power Consumption | Sleep: ~110 µA | Active: ~25 mA |
| Operating Temperature | -20°C to +85°C |
| Dimensions | 12mm x 17mm (approx.) |
| Country of Manufacture | Germany |
Resources
Exact shipping can be calculated on the view cart page (no login required).
Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).
We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):
- $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
- $7+ for Standard Post (typically 6+ business days, tracked)
- $11+ for Express Post (typically 2+ business days, tracked)
- Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.
Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.
Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.
International Orders - the following rates are for New Zealand and will vary for other countries:
- $12+ for Pack and Track (3+ days, tracked)
- $16+ for Express International (2-5 days, tracked)
If you order lots of gear, the postage amount will increase based on the weight of your order.
Our physical address (here's a PDF which includes other key business details):
40 Aruma Place
Cardiff
NSW, 2285
Australia
Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.
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