| commit | 331e76e64dcc4d92a1b77cb74e5aea1212753ff3 | [log] [tgz] |
|---|---|---|
| author | pigweed-roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> | Sun Nov 23 16:48:52 2025 -0800 |
| committer | CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> | Sun Nov 23 16:48:52 2025 -0800 |
| tree | 468788ffccda656e99ac34323fdeb6c4c6cbbb25 | |
| parent | 91d038bddc70d9f0061a50a07ba64edf3eb14116 [diff] |
roll: third_party/pigweed/src cf08ca9..560f88e (59 commits) 560f88e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/348392 roll: luci 63143e4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/348252 roll: fuchsia-infra-bazel-rules, MODULE.bazel.lock defa390:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/348232 roll: python-wheel 6e6d544:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/348052 roll: cmake a856838:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347873 pw_bluetooth: Add AVDTP DELAY REPORT Command 033bac6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346593 pw_bluetooth_proxy: Allow modification + forwarding of L2CAP payloads 1e9e2fb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347237 pw_async2: Allow move-only types with BlockingReceive 0d72a11:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347672 pw_async2: Refactor guides.rst 239a43d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345013 pw_build: Add BuildRecipe dependencies 9beab24:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347632 pw_async2: Use more lock annotations in channel.h b04a327:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/340696 pw_bluetooth_proxy: Add GenericL2capChannel 1cf66b6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347236 pw_containers: Add Contains algorithm 039ffea:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347234 pw_async2: Replace Dispatcher::State with bool 5e618d3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346332 pw_web: Fix npm tests after migration 461c729:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347472 pw_string: Clarify example overloading operator<< 840c2f2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347233 pw_channel: Label module as deprecated a33f5d8:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/342072 pw_ide: Introduce fixed compile command database generation b3087c5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347232 pw_async2: Link to implementing futures guide from guides.rst f0eb6ba:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/343754 pw_async2: Update the informed poll overview 5f2e38b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347132 pw_rpc_transport: Replace std::vector with pw::DynamicVector in tests 879d211:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346833 pw_async2: Merge pw_async2_epoll into pw_async2 152c3d7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/296755 seed: Unify pw_build, pw_presubmit, and the pw tool 30aacd5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/347032 pw: Correct bazelisk quiet flag c478e4c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346594 pw_build: Use tomllib if available 5dc1684:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346832 pw_containers: Fix uninitialized member issue f931a6f:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346632 pw_toolchain: Fix typo 067d2e2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346172 pw_async2: Update unit test example to use futures 611bb2d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346532 pw: Fix paths with spaces 18bbb3c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/342332 build: Add `pw_emboss_build_dir_to_root` arg f687901:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346312 pw_kernel: Rename .tmpl files to .jinja 50616a9:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/340536 pw_kernel: Add Interrupt Object df48374:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346592 pw_ide: Minor stylistic correction 4b3992b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/344332 pw_async2: Create separate doc for channels content 292a206:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/341634 third_party/freertos: Remove unused BUILD file template 49634ff:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346373 pw_kernel: Allow archs to manipulate system generator configs 577bd71:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346392 pw_build: Fix workflows build directory handling 1543a73:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346132 pw_async2: Update interrupt example to use futures abf0521:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346333 pw_kernel: Move arch-agnostic config into a non-generic struct b29fe85:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346214 pw_async2: Make the dispatcher lock constinit a6c1ae1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/346213 pw_async2: Make dispatcher_lock() internal dda2b35:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/344734 pw_bluetooth_proxy: Create GattNotify(Rx,Tx)Engine 9ed30c7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/337273 pw_web: Move root npm rules and ts directory to pw_web bd8b656:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/344733 pw_bluetooth_proxy: Create CreditBasedFlowControl(Rx,Tx)Engine 94ba316:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345072 pw_protobuf: Advertise support for edition 2024 in protoc plugin 867b674:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345012 pw_build: Move pigweed_upstream_build to a separate package 9878485:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/344732 pw_bluetooth_proxy: Create BasicMode(Tx,Rx)Engine 32a3e69:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345672 pw_async2: Temporarily disable sanitizers for channel_thread_test 3f6acaf:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/344312 pw_third_party: Fix pw_third_party.nanopb for Zephyr builds fc4c230:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/336912 pw_async2: Support multiple Dispatcher implementations 376f8b7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/342154 pw_presubmit: Reduce formatter CLI argument handling duplication 39e48a9:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345572 pw_clock_tree: Remove deprecated ClockDivider::Set() shim eacd5b0:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345393 pw_containers: Make AATreeIterators default constructible 17038a7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/344714 pw_build: Support other workflows file formats f3ebe85:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/342814 pw_build_info: Read the linker script variable with the correct size e09749f:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/341672 pw_bluetooth_sapphire: Stop filtering from accidentally being enabled 0f717f2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345352 pw_clock_tree: Provide initializer for DeferredInit::storage_ 5eeabcf:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/342813 freertos: Add support library in CMake 863515e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/345373 pw_assert_basic: Add missing include e92eaf2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/343292 pw_thread_zephyr: Fix example usage comment Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed Rolled-Commits: cf08ca98ed990e..560f88ec3e7772 Roll-Count: 1 Roller-URL: https://cr-buildbucket.appspot.com/build/8697363586836935857 GitWatcher: ignore CQ-Do-Not-Cancel-Tryjobs: true Change-Id: I479be3cf898857a369133293da21a45704460c7a Reviewed-on: https://pigweed-review.googlesource.com/c/open-dice/+/348572 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.