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Andrew Chow cbf385058b
Merge bitcoin/bitcoin#27888: Fuzz: a more efficient descriptor parsing target 
131314b62e fuzz: increase coverage of the descriptor targets (Antoine Poinsot)
90a24741e7 fuzz: add a new, more efficient, descriptor parsing target (Antoine Poinsot)
d60229ede5 fuzz: make the parsed descriptor testing into a function (Antoine Poinsot)

Pull request description:

  The current descriptor parsing fuzz target requires valid public or private keys to be provided. This is unnecessary as we are only interested in fuzzing the descriptor parsing logic here (other targets are focused on fuzzing keys serializations). And it's pretty inefficient, especially for formats that need a checksum (`xpub`, `xprv`, WIF).

  This introduces a new target that mocks the keys as an index in a list of precomputed keys. Keys are represented as 2 hex characters in the descriptor. The key type (private, public, extended, ..) is deterministically based on this one-byte value. Keys are deterministically generated at target initialization. This is much more efficient and also largely reduces the size of the seeds.
  TL;DR: for instance instead of requiring the fuzzer to generate a `pk(xpub6DdBu7pBoyf7RjnUVhg8y6LFCfca2QAGJ39FcsgXM52Pg7eejUHLBJn4gNMey5dacyt4AjvKzdTQiuLfRdK8rSzyqZPJmNAcYZ9kVVEz4kj)` to parse a valid descriptor, it just needs to generate a `pk(03)`.

  Note we only mock the keys themselves, not the entire descriptor key expression. As we want to fuzz the real code that parses the rest of the key expression (origin, derivation paths, ..).

  This is a target i used for reviewing #17190 and #27255, and figured it was worth PR'ing on its own since the added complexity for mocking the keys is minimal and it could help prevent introducing bugs to the descriptor parsing logic much more efficiently.

ACKs for top commit:
  MarcoFalke:
    re-ACK 131314b62e  🐓
  achow101:
    ACK 131314b62e

Tree-SHA512: 485a8d6a0f31a3a132df94dc57f97bdd81583d63507510debaac6a41dbbb42fa83c704ff3f2bd0b78c8673c583157c9a3efd79410e5e79511859e1470e629118
2023-07-27 13:48:12 -04:00
.github github: Switch to yaml issue templates 2023-02-21 11:31:16 +00:00
.tx qt: Bump Transifex slug for 25.x 2023-02-27 14:01:14 +00:00
build-aux/m4 build: Bump minimum supported GCC to g++-9 2023-05-18 12:24:40 +02:00
build_msvc build: adapt Windows builds for libsecp256k1 build changes 2023-07-18 15:26:51 +01:00
ci Merge bitcoin/bitcoin#28092: ci: document that -Wreturn-type has been fixed upstream (mingw-w64) 2023-07-27 11:21:49 +01:00
contrib valgrind: add suppression for bug 472219 2023-07-25 10:23:18 +01:00
depends depends: xcb-proto 1.15.2 2023-07-18 11:27:24 +01:00
doc Merge bitcoin/bitcoin#28113: kernel: Remove UniValue from kernel library 2023-07-25 18:13:16 -04:00
share depends: Bump MacOS minimum runtime requirement to 11.0 2023-06-22 15:28:47 +00:00
src Merge bitcoin/bitcoin#27888: Fuzz: a more efficient descriptor parsing target 2023-07-27 13:48:12 -04:00
test test: remove unused totalOut code 2023-07-26 16:05:37 -03:00
.cirrus.yml Squashed 'src/secp256k1/' changes from 705ce7ed8c..c545fdc374 2023-07-18 15:25:05 +01:00
.editorconfig ci: Drop AppVeyor CI integration 2021-09-07 06:12:53 +03:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore refactor: cleanups post unsubtree'ing univalue 2022-06-15 12:56:44 +01:00
.python-version ci: Use DOCKER_BUILDKIT for lint image 2023-07-16 13:18:18 +02:00
.style.yapf Update .style.yapf 2023-06-01 23:35:10 +05:30
autogen.sh build: make sure we can overwrite config.{guess,sub} 2023-06-13 14:58:43 +02:00
configure.ac Merge bitcoin/bitcoin#28092: ci: document that -Wreturn-type has been fixed upstream (mingw-w64) 2023-07-27 11:21:49 +01:00
CONTRIBUTING.md doc: Explain squashing with merge commits 2022-05-24 08:17:41 +02:00
COPYING doc: Update license year range to 2023 2022-12-24 11:40:16 +01:00
INSTALL.md doc: Added hyperlink for doc/build 2021-09-09 19:53:12 +05:30
libbitcoinconsensus.pc.in build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 2019-11-19 15:03:44 +01:00
Makefile.am Squashed 'src/secp256k1/' changes from 705ce7ed8c..c545fdc374 2023-07-18 15:25:05 +01:00
README.md doc: Explain Bitcoin Core in README.md 2022-05-10 07:49:09 +02:00
SECURITY.md doc: Add my key to SECURITY.md 2022-08-23 16:57:46 -04:00

README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.