| commit | b236e6756722b6d44b7b7744c8f3a561fdfda33b | [log] [tgz] |
|---|---|---|
| author | pigweed-roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> | Sun Sep 28 17:50:13 2025 -0700 |
| committer | CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> | Sun Sep 28 17:50:13 2025 -0700 |
| tree | d2e10a0fc40f59f02961e67f687eab546080e51c | |
| parent | 32495b34db14cd7b8c1e13b61b64482df67f5d26 [diff] |
roll: third_party/pigweed/src 2fb733c..8257af2 (55 commits) 8257af2:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/326772 roll: luci 1a4c64b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/326692 roll: fuchsia-infra-bazel-rules 226a7f3..00003cc (51 commits) e8d1563:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/326652 roll: python-wheel 5787bac:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325501 pw_kvs: Rework documentation structure & content 5bdabe5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/326472 roll: cmake f24c9a1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324892 pw_build_info: Add "-dirty" suffix to kGitCommit 8ddcffa:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325952 pw_build_info: Change kGitCommit to InlineBasicString cfe6a32:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323992 pw_digital_io_mcuxpresso: One handler per pin aedabd6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/326092 pw_package: Use flatbuffers mirror b1130af:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325572 pw_digital_io_mcuxpresso: Support SDK 25.06.00 fdd52b3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325853 pw_ide: Debounce restarting clangd on compile commands change 709c984:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325512 pw_async2: Read waker name from derived futures d9810f7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323892 pw_async2: Update codelab 7f28175:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325832 pw_unit_test: Restore lost docs for PW_CONSTEXPR_TEST f0881b8:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325373 pw_async2: Experimental SingleFutureProvider cae0245:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325852 pw_package: Use FreeRTOS mirror 0de05c5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323872 pw_digital_io_mcuxpresso: Check interrupts cleared 15af03a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323817 pw_kernel: Refactor common logging backend code out of console a5c3e1b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323816 pw_kernel: Un-fork pw_status ef047b4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323815 pw_kernel: Remove embedded-io deps from all but rp2350 support cf9e8b8:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323814 pw_tokenizer: Refactor new() out of MessageWriter trait 812c717:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325594 pw_build_info: Remove :git_build_info_lib alias 4f146c7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325693 pw_ide: Remove unused nodejs version of compile commands generator 7a79b5e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325532 pw_bluetooth_proxy: Delete ProxyHost::SendAdditionalRxCredits 0dd6fdc:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325593 pw_build_info: Change :git_build_info to cc_library ec5ef46:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325712 pw_ide: Reduce cpu cores taken by clangd process for indexing ee79430:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/318493 freertos: Support swapping pw_third_party.freertos implementation e4be1a0:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325713 docs: Update Pigweed Live calendar data db3a128:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325592 pw_build_info: Introduce :git_build_info_lib c4353db:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325496 pw_tokenizer: Provide cc_library for Java's native .so dep 92e738c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325432 rust: Enforce lower case hex literals in rustfmt 506d7f3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324913 pw_kernel: Add cortex-m CPUID register f2883cb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/325372 pw_compilation_testing: Cap max parallelism 77bd96c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324778 pw_ide: Avoid crash when pigweed project root is not found 0d0bbba:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324732 pw_bluetooth_sapphire: Don't filter out unconnectable peers 90c692e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324052 pw_log_string: Switch assert.h to cassert afda10d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324511 pw_ide: Make target selection dropdown variable width 666bd39:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324813 pw_build: Make workflows set --symlink_prefix d35044a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324912 pw_compilation_testing: Disable unsupported features 7aae54c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324452 pw_metric: Add generic pwpb and nanopb metric writers 036f3b3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/321872 pw_kernel: Add interrupt controller support 2e30708:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324872 Revert "pw_assert: Remove old backend label_flags" ec2a66f:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324812 pw_compilation_testing: Remove unneded references 5b81c5e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324553 pw_presubmit: Use prettier to format css files bcc86ca:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323893 pw_bluetooth_sapphire: Implement Central.SyncToPeriodicAdvertising c57f0e8:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324492 pw_async2: Derive TimeFuture from Future 6ad7940:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/320819 pw_assert: Remove old backend label_flags be94bbb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323912 pw_watch: ./pw watch workflow; better message if no commands 6fd39ed:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/306078 pw_compilation_testing: Implement PW_NC_TEST in Bazel 148f0d0:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324532 pw_grpc: Account for gRPC header in flow control window 440ea6d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/322432 pw_ide: Add Help section along with a welcome header c376a00:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324495 pw_ide: Add flag to avoid creation of bazel symlinks in aspect wrapper 62f2b6e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/323794 pw_metric: Promote metric_walker.h to public API 12ecc7a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/317152 pw_ide: Remap virtual includes 3959870:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/321172 pw_async2: Experimental Future type Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed Rolled-Commits: 2fb733cb5103f9..8257af2f61c7cf Roll-Count: 1 Roller-URL: https://cr-buildbucket.appspot.com/build/8702437018152662897 GitWatcher: ignore CQ-Do-Not-Cancel-Tryjobs: true Change-Id: I0873265fccc5668f218c796310004218d51e385a Reviewed-on: https://pigweed-review.googlesource.com/c/open-dice/+/326798 Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com> Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.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.