163 lines
12 KiB
HTML
163 lines
12 KiB
HTML
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<title>GrapheneOS</title>
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<nav>
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<ul>
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<li class="active"><a href="/">GrapheneOS</a></li>
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<li><a href="/install">Install</a></li>
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<li><a href="/build">Build</a></li>
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<li><a href="/usage">Usage</a></li>
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<!--<li><a href="/faq">FAQ</a></li>-->
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<li><a href="/releases">Releases</a></li>
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<li><a href="/source">Source</a></li>
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<li><a href="/donate">Donate</a></li>
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<li><a href="/contact">Contact</a></li>
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<div id="content">
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<h1 id="grapheneos">
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<a href="#grapheneos">GrapheneOS</a>
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</h1>
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<p>GrapheneOS is an open source privacy and security focused mobile OS with Android
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app compatibility.</p>
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<p>Official releases are available on the <a href="/releases">releases page</a> and
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installation instructions are on the <a href="/install">install page</a>.</p>
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<p>See the <a href="https://github.com/GrapheneOS">GitHub organization</a> for sources
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of the OS and various standalone sub-projects including the cutting edge
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<a href="https://github.com/GrapheneOS/hardened_malloc/blob/master/README.md">new
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hardened memory allocator</a> and other projects.</p>
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<p>The official GrapheneOS releases are supported by the
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<a href="https://github.com/GrapheneOS/Auditor/releases">Auditor app</a> and
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<a href="https://attestation.app/">attestation service</a> for hardware-based
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attestation. For more details, see the <a
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href="https://attestation.app/about">about page</a> and <a
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href="https://attestation.app/tutorial">tutorial</a>. You can also extend these with
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support for your own builds.</p>
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<p>The sources are available via the
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<a href="https://github.com/GrapheneOS/platform_manifest">manifest on GitHub</a>.</p>
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<h2 id="early-stage-of-development">
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<a href="#early-stage-of-development">Early stage of development</a>
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</h2>
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<p>GrapheneOS is a privacy / security research and engineering project that has been
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under way for over 5 years. It recently became rebranded as GrapheneOS and is taking a
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different direction based on obtaining funding for the research and development work
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as a non-profit open source project rather than being a company. The reborn project is
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still in a very early stage and lots of the past work on privacy and security has not
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yet been restored for the new incarnation of the OS.</p>
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<p>The grapheneos.org site is very new and is currently being put together. It will
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have lots of additional documentation and tutorials in the future along with coverage
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of various software, firmware and hardware privacy/security topics.</p>
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<p>GrapheneOS is being supported with funding and developers from various companies
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and other organizations interested in contributing to this shared base for a feature
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rich private and secure mobile operating system able to run many existing
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applications. It will take more time to organize and deploy these resources in order
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for the project to have a strong development team with proper infrastructure behind
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it.</p>
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<h2 id="roadmap">
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<a href="#roadmap">Roadmap</a>
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</h2>
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<p>Details on the roadmap of the project will be posted on the site in the near
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future. In the long term, it aims to move beyond a hardened fork of the Android Open
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Source Project. Achieving the goals requires moving away from relying the Linux kernel
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as the core of the OS and foundation of the security model. It needs to move towards a
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microkernel-based model with a Linux compatibility layer, with many stepping stones
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leading towards that goal including adopting virtualization-based isolation.</p>
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<p>The initial phase for the long-term roadmap of moving away from the current
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foundation will be to deploy and integrate a hypervisor like Xen to leverage it for
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reinforcing existing security boundaries. Linux would be running inside the virtual
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machines at this point, inside and outside of the sandboxes being reinforced. In the
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longer term, Linux inside the sandboxes can be replaced with a compatibility layer
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like gVisor, which would need to be ported to arm64 and given a new backend alongside
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the existing KVM backend. Over the longer term, i.e. many years from now, Linux can
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fade away completely and so can the usage of virtualization. The anticipation is that
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many other projects are going to be interested in this kind of migration, so it's not
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going to be solely a GrapheneOS project, as demonstrated by the current existence of
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the gVisor project and various other projects working on virtualization deployments
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for mobile. Having a hypervisor with verified boot still intact will also provide a
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way to achieve some of the goals based on extensions to Trusted Execution Environment
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(TEE) functionality even without having GrapheneOS hardware.</p>
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<p>Hardware and firmware security are core parts of the project, but it's currently
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limited to research and submitting suggestions and bug reports upstream. In the long
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term, the project will need to move into the hardware space.</p>
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<h2 id="device-support">
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<a href="#device-support">Device support</a>
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</h2>
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<p>In the current early stage of the project, GrapheneOS provides production releases
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for the Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Pixel 3, Pixel 3 XL, Pixel 3a and Pixel
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3a XL. <strong>The recommended devices with the best hardware, firmware and software
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security along with the longest future support time are the Pixel 3a, Pixel 3a XL,
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Pixel 3 and Pixel 3 XL.</strong> It will support other devices in the future, but
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devices are carefully chosen based on their merits rather than the project aiming to
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have broad device support. Broad device support is counter to the aims of the
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project, and the project will eventually be engaging in hardware and firmware level
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improvements rather than only offering suggestions and bug reports upstream for those
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areas. Much of the work on the project involves changes that are specific to different
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devices, and officially supported devices are the ones targeted by most of this
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ongoing work. GrapheneOS also has source level support without device-specific
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hardening for the Android emulator, HiKey, HiKey 960 and also generic targets
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providing basic support for many other devices.</p>
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<p>Devices need to be meet the standards of the project in order to be considered as
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potential targets. In addition to support for installing other operating systems,
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standard hardware-based security features like the hardware-backed keystores, verified
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boot, attestation and various hardware-based exploit mitigations need to be available.
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Devices also need to have decent integration of IOMMUs for isolating components such
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as the GPU, radios (NFC, Wi-Fi, Bluetooth, Cellular), media decode / encode, image
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processor, etc. as if the hardware / firmware support is missing or broken, there's
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not much that the OS can do to provide an alternative. Devices with support for
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alternative operating systems as an afterthought will not be considered. Devices need
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to have proper ongoing support for their firmware and software specific to the
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hardware like drivers in order to provide proper full security updates too. Devices
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that are end-of-life and no longer receiving these updates will not be supported.</p>
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<p>In order to support a device, the appropriate resources also need to be available
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and dedicated towards it. Releases for each supported device need to be robust and
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stable, with all standard functionality working properly and testing for each of the
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releases.</p>
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<p>Hardware, firmware and software specific to devices like drivers play a huge role
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in the overall security of a device. The goal of the project is not to slightly
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improve some aspects of insecure devices and supporting a broad set of devices would
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be directly counter to the values of the project. A lot of the low-level work also
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ends up being fairly tied to the hardware.</p>
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<p>Some of the GrapheneOS sub-projects support other operating systems on a broader
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range of devices. Device support for Auditor and AttestationServer is documented in
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the <a href="https://attestation.app/about">overview of those projects</a>. The
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<a href="https://github.com/GrapheneOS">hardened_malloc</a> project supports nearly
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any Linux-based environment due to official support for musl, glibc and Bionic along
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with easily added support for other environments. It can easily run on non-Linux-based
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operating systems too, and supporting some like HardenedBSD is planned but depends on
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contributors from those communities.</p>
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</div>
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<footer>
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<a href="/"><img src="https://grapheneos.org/logo.png" width="512" height="512" alt=""/>GrapheneOS</a>
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<li><a href="https://twitter.com/GrapheneOS">Twitter</a></li>
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<li><a href="https://github.com/GrapheneOS">GitHub</a></li>
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<li><a href="https://reddit.com/r/GrapheneOS">Reddit</a></li>
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