| commit | 0d26fc9ef857616ef0a0a6dc713f1da5b096df17 | [log] [tgz] |
|---|---|---|
| author | pigweed-roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com> | Sun Apr 27 17:45:51 2025 -0700 |
| committer | CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> | Sun Apr 27 17:45:51 2025 -0700 |
| tree | 5b96c539126c994b68ce8eea868e018af58f2049 | |
| parent | 48596d0df33a23b7d5121d400f3ad656ac9013ca [diff] |
roll: third_party/pigweed/src 5e9dd49..f36b192 (48 commits) f36b192:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286694 roll: gn 16368a5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286693 roll: luci c2da04e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286634 roll: fuchsia-infra-bazel-rules 4dcae33..cb9e321 (38 commits) c65f4c1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/262793 pw_bluetooth_sapphire: Implement IsochronousStream::Write() 517b964:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285892 pw_build: Extend colors across multiple log lines 4682f8d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284532 pw_bluetooth_sapphire: LE random addr in advertisements 0193ef0:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285859 pw_perf_test: New LogCsvEventHandler; measurement improvements 12ec135:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285693 pw_checksum: Migrate size reports to Bazel a5b7767:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284152 pw_kernel: Initial syscall design f294164:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284874 pw_hdlc: Migrate size reports to Bazel 5f93ecf:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284280 pw_async2: Store and log wait reasons 768021d:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284691 pw_string: Migrate size reports to Bazel d81bd23:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/286092 pw_log: Define default values for tokens 8490841:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284395 pw_bluetooth_sapphire: Bump Fuchsia SDK API level to 27 478b9b6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/283792 pw_kernel: Add debug_assert! macro 058426c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285795 pw_containers: Migrate size reports to Bazel 10298a8:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285952 Revert "pw_allocator: Refactor Deallocator::GetInfo" 51d4a2f:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284854 pw_persistent_ram: Migrate size reports to Bazel 81e3403:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285817 pw_tokenizer: Expand detokenization perf test 8516f31:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285738 pw_bloat: Migrate size reports to Bazel 765afdb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285798 pw_protobuf: Re-enable a size report 1619c24:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285816 pw_perf_test: Iteration tracking improvements 641dcf7:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285912 pw_trace_tokenized: Apply clang-format findings c2daa89:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285653 blob_store: Update flash_write_size_bytes comment a1763bb:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285694 pw_kernel: Remove Cortex-M exception accesses to user frame 2254526:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285652 pw_kernel: Move syscalls to execute in exception context 82897c9:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285612 pw_kernel: Generate Cortex-M exception wrappers with a proc macro 1b6dc6a:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284313 third_party/chromium_verifier: Use pw_external_chromium_verifier in gn 60b13c1:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285732 pw_tokenizer: Add a few tests; fix typo d1a9c37:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285672 pw_bluetooth_sapphire: SCO Offload Index config ef9eb37:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285372 pw_rpc_transport: Fix docs.rst example of node B setup ba96152:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/283972 pw_bluetooth_proxy: Handle l2cap disconnection response direction e38aff6:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284552 roll: clang, rust ef778d4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284276 pw_cli: Add 'pw push' command d313305:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284689 pw_result: Migrate size reports to Bazel c09fbd5:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284858 pw_bytes: Migrate size reports to Bazel 5044006:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285257 pw_base64: Use div_ceil for encoded size calculation 72f264b:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285357 pw_work_queue: Add missing mutex include e587b7e:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285293 third_party/embos: Use pw_external_embos in gn e658fd4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285259 pw_toolchain: Use rust nightly channel to compile stdlib 59db474:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285332 third_party/freertos: Use pw_external_freertos in gn a5fd1e4:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284877 pw_metric: Migrate size reports to Bazel c946806:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284879 pw_kvs: Migrate size reports to Bazel cc29764:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285294 third_party/emboss: Use pw_external_emboss in gn 996bf64:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/282952 pw_work_queue: Templatize WorkQueue to allow for custom types 2f15246:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/284875 pw_bluetooth_sapphire: Set default security mode in SSP state 458237c:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/282893 pw_bluetooth_sapphire: Acquire wake lease while ServiceFound pending 1c7cfd3:https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/285047 Revert "pw_bluetooth_sapphire: SCO Offload Index config" Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed Rolled-Commits: 5e9dd49e6dd2b2..f36b192d1ad8c6 Roll-Count: 1 Roller-URL: https://cr-buildbucket.appspot.com/build/8716388950362738145 GitWatcher: ignore CQ-Do-Not-Cancel-Tryjobs: true Change-Id: Iea913ab4f8b84d91e30ea7c5f635104975833c38 Reviewed-on: https://pigweed-review.googlesource.com/c/open-dice/+/286776 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.