The previous diff touched most files in ./test/, so bump the headers to
avoid having to touch them again for a bump later.
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./test/
-END VERIFY SCRIPT-
Messy merge conflicts because this PR backported some ad-hoc stuff from
upstream while keeping a few things that upstream deleted. Hopefully
reviewing is easier than doing this in the first place, since ultimately
all I did was delete code from one side or another of the conflicts.
(Ok, I also changed some boost optional stuff to std::optional, and had
to patch up a test file for test framework changes.)
When reviewing the detailed crypto, bear in mind that taptweaks, like all
hashes are the kind of crypto that cannot be subtly wrong -- it will either
fail very hard or be correct. And we have independent implementations in
C++ and Python that cross-check each other, si it's unlikely to be the former.
This forward-ports the new Taproot sighash but does not fix a couple
22-blocked TODOs related to the MissingDataBehavior enum. Should be fixed
in a followup commit.
One nontrivial change I had to make was feeding the genesis hash to SignTransaction
(the "global" one in script/sign.cpp) so that it could correctly compute
the sighash at signing time.
Several conflicts in the C++ code related to the new `flags` parameter
to `CheckSignature` and the corresponding function being renamed upstream
to `CheckSignatureECDSA`.
Several conflicts in the test harness as Steven sorta pulled the new
upstream ECKey module into the Python code, and the actual upstream
code was slightly different. Also needed to update the feature_taproot
code to always use the non-RANGEPROOF sighash since dynafed is not
enabled in the Taproot test.
Also had to pull the `set_wif` method out of `ECKey` and inline it because
otherwise it triggers a "circular inclusion" error between script.py (which
would pull in `base58_to_bytes` from address.py) and address.py (which now
pulls in some taproot EC related stuff from script.py).
Noticed that #960 does not test the "sighash rangeproof flag set but no
witnesses" case.
Now that we require Python 3.6+, we should be using variable type
annotations directly rather than # type: comments.
Also takes care of the discarded value issue in p2p_message_capture.py.
See: https://github.com/bitcoin/bitcoin/pull/19509/files#r571674446.
812baaa1f8 Switch to BIP341's suggested scheme for outputs without script (Pieter Wuille)
Pull request description:
BIP341 suggests using Hash<sub>TapTweak</sub>(pubkey) to derive the tweak in case of key-only outputs. The functional test framework currently uses Hash<sub>TapTweak</sub>(pubkey || 0x00...00) instead. Change this.
There is no technical reason to prefer one over the other, but in case someone looks at it for inspiration, it's better to be consistent with the BIP.
ACKs for top commit:
laanwj:
ACK 812baaa1f8
instagibbs:
ACK https://github.com/bitcoin/bitcoin/pull/20189/commits/812baaa1f804a8c848284759c75e5f9d19e942f8
Tree-SHA512: 02576c38776ec786255f49d7edecdb1ed8a9dcf0f547d58c23099588b4c3296edf279b103a6eb80e0f07d3c5ee9743f67d152f5244fd63adc6613b004f6969ed
A large functional test is added that automatically generates random transactions which
exercise various aspects of the new rules, and verifies they are accepted into the mempool
(when appropriate), and correctly accepted/rejected in (Python-constructed) blocks.
Includes sighashing code and many tests by Johnson Lau.
Includes a test by Matthew Zipkin.
Includes several tests and improvements by Greg Sanders.
substitutes "for x in range(N):" by "for _ in range(N):"
indicates to the reader that a block is just repeated N times, and
that the loop counter is not used in the body
7daffc6a90 [test] CScriptNum Decode Check as Unit Tests (Gillian Chu)
Pull request description:
The CScriptNum test (#14816) is a roundtrip test of the test framework. Thus, it would be better suited as a unit test. This is now possible with the introduction of the unit test module for the functional tests. See #18576.
This PR:
1. Refactors the CScriptNum tests into 2 unit tests, one in script.py and one in blocktools.py.
2. Extends the script.py CScriptNum test to trial larger numbers.
ACKs for top commit:
laanwj:
ACK 7daffc6a90
Tree-SHA512: 17a04a4bfff1b1817bfc167824c679455d9e06e6e0164c00a7e44f8aa5041c5f5080adcc1452fd80ba1a6d8409f976c982bc481d686c434edf97a5893a32a436
Migrates the CScriptNum decode tests into a unit test, and moved some
changes made in #14816. Made possible by the integration of
test_framework unit testing in #18576. Further extends the original
test with larger ints, similar to the scriptnum_tests.cpp file. Adds
test to blocktools.py testing fn create_coinbase() with CScriptNum
decode.
