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Board designs, FPGA verilog, firmware for TKey, the flexible and open USB security key
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README.md

Tillitis Key 1

Introduction

Tillitis Key 1 is a new kind of USB security token. All of its software, FPGA logic, schematics, and PCB layout are open source, as all security software and hardware should be. This in itself makes it different, as other security tokens utilize closed source hardware for its security-critical operations.

What makes the Tillitis Key 1 security token unique is that it doesn’t verify applications, it measures them (hashes a digest over the binary), before running them on its open hardware security processor.

Each security token contains a Unique Device Secret (UDS), which together with an application measurement, and an optional user-provided seed, is used to derive key material unique to each application. This allows users to build and load their own apps, while ensuring that each app loaded will have its own cryptographic identity. The design is similar to TCG DICE. The Tillitis Key 1 platform allows for applications up to 64 KB.

The first implementation is the Tillitis Key 1: The Tillitis Key 1 PCB

Documentation

About this repository

This repository contains hardware, software and utilities written as part of the Tillitis Key 1 project. It is structured as monolithic repository, or "monorepo", where all components live in one repository.

The repository follows the OpenTitan layout.

Licensing

See LICENSES for more information about the projects' licenses.