OpenTitan: Open source silicon root of trust
3,642
stars
27,368
commits
SystemVerilog
primary language
Sep 11, 2026
updated

OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or "monorepo", where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.
The project contains comprehensive documentation of all IPs and tools. You can access it online at opentitan.org/book/.
Have a look at CONTRIBUTING and our documentation on project organization and processes for guidelines on how to contribute code to this repository.
Unless otherwise noted, everything in this repository is covered by the Apache License, Version 2.0 (see LICENSE for full text).
(top 30 of 224)
SystemVerilog
46.6%
C
20.3%
Python
7.2%
Rust
6.2%
Starlark
4.0%
Emacs Lisp
3.8%
C++
3.5%
Smarty
3.4%
Assembly
2.8%
OpenTitan: Open source silicon root of trust
3,642
stars
27,368
commits
SystemVerilog
primary language
Sep 11, 2026
updated

OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.
This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or "monorepo", where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.
The project contains comprehensive documentation of all IPs and tools. You can access it online at opentitan.org/book/.
Have a look at CONTRIBUTING and our documentation on project organization and processes for guidelines on how to contribute code to this repository.
Unless otherwise noted, everything in this repository is covered by the Apache License, Version 2.0 (see LICENSE for full text).
(top 30 of 224)
SystemVerilog
46.6%
C
20.3%
Python
7.2%
Rust
6.2%
Starlark
4.0%
Emacs Lisp
3.8%
C++
3.5%
Smarty
3.4%
Assembly
2.8%