| commit | 5d80cc3ec93dd8fc7c031fbd35efefbf73747017 | [log] [tgz] |
|---|---|---|
| author | pigweed-roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> | Sun Jan 18 16:47:51 2026 -0800 |
| committer | CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> | Sun Jan 18 16:47:51 2026 -0800 |
| tree | 88d048db299aad979109df657babfebd7aa61333 | |
| parent | f6d6ec6cf3ce83d3453c5067f2d1525d95b1d5b3 [diff] |
roll: third_party/pigweed/src f7c9b66..295a19c (45 commits) 295a19c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/365512 roll: luci 2fa2760:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/365452 roll: fuchsia-infra-bazel-rules a8e54c0..235caa4 (57 commits) abe4030:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363912 pw_bluetooth: Add sniff offload vendor commands 068e226:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/364217 pw_grpc: Remove deprecated methods 6eacf28:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/364552 Revert "pw_stream_uart_mcuxpresso: Acquire / release clock element dynamically" aa3d5b4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/361816 pw_toolchain: Add extension to manage toolchain binaries 42f3161:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/364432 pw_async2: Split FutureState from FutureCore 9fc5bc1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/357232 pw_bluetooth_sapphire: Use IgnoreError with SendCommand a3b3073:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363992 pw_bluetooth_proxy: Update Android.bp 78737b3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/358512 pw_snapshot: Android.bp missing generated headers b842a16:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363052 pw_allocator: Add generic fragmentation metrics support eed7451:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363812 pw_allocator: Delegate Reallocate in TrackingAllocator 11aeb54:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363152 pw_containers: DynamicPtrVector swap functions 5536158:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/362393 pw_containers: Support inserting UniquePtrs for DynamicPtrVector 8ebb180:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363692 pw_ide: Resolve symlinks when generating compile commands 0727154:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/364395 pw_async2: Make SelectFuture operations constexpr 3a66b5c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/364094 pw_async2: Update SelectFuture to new model 9e6c394:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363672 pw_ide: Fix project root inference to not look in subdir 55ce0a1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363092 pw_presubmit: Minor fix for Python 3.13 compatibility e0d90ba:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363154 pw_async2: Define Future as a concept d4b4132:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/364112 pw_stream: Ignore peek() result to silence [[nodiscard]] warnings 1892944:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/362057 pw_hdlc: Fix missing dependencies in router_test 15a1ccb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363973 workflows: Split up "default" (2/2) 1a7c46c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363972 workflows: Split up "default" (1/2) 15d3358:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363612 pw_build: Remove workflows ConfigLoaderOptions 7f4d75c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363872 pw_memory: Add Android.bp ddb74d1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363613 pw_libcxx: Provide common libcxx hooks 62be723:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/356812 pw_sync: Remove pw_sync/yield_core.h b199cd1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/361312 third_party/smartfusion_mss: Update GN and Bazel build targets 0fc1b13:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363473 pw_libc: LLVM libc default hooks 3490c8b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363455 perfetto: Update copybara job to point to new primary repo 099a694:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363453 third_party/perfetto: Copybara import 0fc191f:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363178 pw_grpc: Refactor SendQueue to an abstract interface 5daee40:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363076 pw_bluetooth_proxy: Add gatt::Server::RemoveCharacteristic 45b4833:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/362278 pw_bluetooth_proxy: Add gatt::Server::AddCharacteristic ce3721d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/362212 pw_async2: Migrate pw_async2 Channels to FutureCore 987d92c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/361775 pw_bluetooth_proxy: Support Write Without Response (Server) 0714533:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363474 pw_container: Avoid unsigned integer overflow 740f988:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363153 pw_async2: Store waker in test task to avoid flakes 5f58577:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/363252 pw_containers: Add NO_SANITIZE to container 53c714a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/354135 pw_toolchain: Default Bazel upstream builds to C++20 5881ac9:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/361777 pw_async2: Remove ListableFutureWithWaker; start FutureCore docs 0f4cf19:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/361272 pw_libc: Add missing dependency on pw_preprocessor baf7896:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/360912 pw_bluetooth_proxy: Implement gatt::Server::SendNotification 158e332:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/361792 pw_i2c_mcuxpresso: Skip aborting transfer when auto restarting interface Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed Rolled-Commits: f7c9b663ca63fb..295a19c74aa881 Roll-Count: 1 Roller-URL: https://cr-buildbucket.appspot.com/build/8692290157260339153 GitWatcher: ignore CQ-Do-Not-Cancel-Tryjobs: true Change-Id: I0d66da328970b339f84b4d777b5d29625fcc518d Reviewed-on: https://pigweed-review.googlesource.com/c/open-dice/+/365652 Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
This repository contains the specification for the Open Profile for DICE along with production-quality code. This profile is a specialization of the Hardware Requirements for a Device Identifier Composition Engine and DICE Layering Architecture specifications published by the Trusted Computing Group (TCG). For readers already familiar with those specs, notable distinctives of this profile include:
You can find us (and join us!) at https://groups.google.com/g/open-profile-for-dice. We're happy to answer questions and discuss proposed changes or features.
The specification can be found here. It is versioned using a major.minor scheme. Compatibility is maintained across minor versions but not necessarily across major versions.
Production quality, portable C code is included. The main code is in dice.h and dice.c. Cryptographic and certificate generation operations are injected via a set of callbacks. Multiple implementations of these operations are provided, all equally acceptable. Integrators should choose just one of these, or write their own.
Tests are included for all code and the build files in this repository can be used to build and run these tests.
Disclaimer: This is not an officially supported Google product.
Different implementations use different third party libraries. The third_party directory contains build files and git submodules for each of these. The submodules must be initialized once after cloning the repo, using git submodule update --init, and updated after pulling commits that roll the submodules using git submodule update.
To setup the build environment the first time:
$ git submodule update --init --recursive $ source bootstrap.sh $ gn gen out
To build and run tests:
$ ninja -C out
The easiest way, and currently the only supported way, to build and run tests is from a Pigweed environment on Linux. Pigweed does support other host platforms so it shouldn't be too hard to get this running on Windows for example, but we use Linux.
There are two scripts to help set this up:
bootstrap.sh will initialize submodules, bootstrap a Pigweed environment, and generate build files. This can take some time and may download on the order of 1GB of dependencies so the normal workflow is to just do this once.
activate.sh quickly reactivates an environment that has been previously bootstrapped.
These scripts must be sourced into the current session: source activate.sh.
In the environment, from the base directory of the dice-profile checkout, run ninja -C out to build everything and run all tests. You can also run pw watch which will build, run tests, and continue to watch for changes.
This will build and run tests on the host using the clang toolchain. Pigweed makes it easy to configure other targets and toolchains. See toolchains/BUILD.gn and the Pigweed documentation.
The code is designed to be portable and should work with a variety of modern toolchains and in a variety of environments. The main code in dice.h and dice.c is C99; it uses uint8_t, size_t, and memcpy from the C standard library. The various ops implementations are as portable as their dependencies (often not C99 but still very portable). Notably, this code uses designated initializers for readability. This is a feature available in C since C99 but missing from C++ until C++20 where it appears in a stricter form.
The Google C++ Style Guide is used. A .clang-format file is provided for convenience.
To incorporate the code into another project, there are a few options:
Copy only the necessary code. For example:
Take the main code as is: include/dice/dice.h, src/dice.c
Choose an implementation for crypto and certificate generation or choose to write your own. If you choose the boringssl implementation, for example, take include/dice/utils.h, include/dice/boringssl_ops.h, src/utils.c, and src/boringssl_ops.c. Taking a look at the library targets in BUILD.gn may be helpful.
Add this repository as a git submodule and integrate into the project build, optionally using the gn library targets provided.
Integrate into a project already using Pigweed using the gn build files provided.
The build reports code size using Bloaty McBloatface via the pw_bloat Pigweed module. There are two reports generated:
Library sizes - This report includes just the library code in this repository. It shows the baseline DICE code with no ops selected, and it shows the delta introduced by choosing various ops implementations. This report does not include the size of the third party dependencies.
Executable sizes - This report includes sizes for the library code in this repository plus all dependencies linked into a simple main function which makes a single DICE call with all-zero input. It shows the baseline DICE code with no ops (and therefore no dependencies other than libc), and it shows the delta introduced by choosing various ops implementations. This report does include the size of the third party dependencies. Note that rows specialized from ‘Boringssl Ops’ use that as a baseline for sizing.
The reports will be in the build output, but you can also find the reports in .txt files in the build output. For example, cat out/host_optimized/gen/*.txt | less will display all reports.
This code does not itself use mutable global variables, or any other type of shared data structure so there is no thread-safety concerns. However, additional care is needed to ensure dependencies are configured to be thread-safe. For example, the current boringssl configuration defines OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED, and that would need to be changed before running in a threaded environment.
This code makes a reasonable effort to clear memory holding sensitive data. This may help with a broader strategy to clear sensitive data but it is not sufficient on its own. Here are a few things to consider.