Age | Commit message (Collapse) | Author |
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Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
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This makes IsSane clearer. It is useful to differentiate between 'potential non-malleable satisfactions are valid' and 'such satisfactions exist' for testing.
Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
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This helps to have finer-grained descriptor parsing errors.
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Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
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Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
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The 'Fragment' type was previously named 'Nodetype'. For clarity, name
the variables the same.
-BEGIN VERIFY SCRIPT-
sed -i 's/nodetype/fragment/g' src/script/miniscript.*
-END VERIFY SCRIPT-
Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
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Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
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The value it leaves on the stack depends on the last element on the
stack. However, we can't make sure this element is OP_1 (which would
give us the 'u' property) without the MINIMALIF rule.
MINIMALIF is only policy for P2WSH, therefore giving 'd:' the 'u'
property breaks consensus soundness: it makes it possible (by consensus
but not policy) for instance to satisfy a thresh() without satisfying
at least k of its subs.
This bug was found and reported by Andrew Poelstra.
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2da94a4c6f55f7a3621f4a6f70902c52f735c868 fuzz: add a fuzz target for Miniscript decoding from Script (Antoine Poinsot)
f8369996e76dbc41a12f7b7eea14a7e7990a81c1 Miniscript: ops limit and stack size computation (Pieter Wuille)
2e55e88f86d0dd49b35d04af3f57e863498aabae Miniscript: conversion from script (Pieter Wuille)
1ddaa66eae67b102f5e37d212d366a5dcad4aa26 Miniscript: type system, script creation, text notation, tests (Pieter Wuille)
4fe29368c0ded0e62f437cab3a7c904f7fd3ad67 script: expose getter for CScriptNum, add a BuildScript helper (Antoine Poinsot)
f4e289f384efdda6c3f56e1e1c30820a91ac2612 script: move CheckMinimalPush from interpreter to script.h (Antoine Poinsot)
31ec6ae92a5d9910a26d90a6ff20bab27dee5826 script: make IsPushdataOp non-static (Antoine Poinsot)
Pull request description:
Miniscript is a language for writing (a subset of) Bitcoin Scripts in a structured way.
Miniscript permits:
- To safely extend the Output Descriptor language to many more scripting features thanks to the typing system (composition).
- Statical analysis of spending conditions, maximum spending cost of each branch, security properties, third-party malleability.
- General satisfaction of any correctly typed ("valid" [0]) Miniscript. The satisfaction itself is also analyzable.
- To extend the possibilities of external signers, because of all of the above and since it carries enough metadata.
Miniscript guarantees:
- That for any statically-analyzed as "safe" [0] Script, a witness can be constructed in the bounds of the consensus and standardness rules (standardness complete).
- That unless the conditions of the Miniscript are met, no witness can be created for the Script (consensus sound).
- Third-party malleability protection for the satisfaction of a sane Miniscript, which is too complex to summarize here.
For more details around Miniscript (including the specifications), please refer to the [website](https://bitcoin.sipa.be/miniscript/).
Miniscript was designed by Pieter Wuille, Andrew Poelstra and Sanket Kanjalkar.
This PR is an updated and rebased version of #16800. See [the commit history of the Miniscript repository](https://github.com/sipa/miniscript/commits/master) for details about the changes made since September 2019 (TL;DR: bugfixes, introduction of timelock conflicts in the type system, `pk()` and `pkh()` aliases, `thresh_m` renamed to `multi`, all recursive algorithms were made non-recursive).
This PR is also the first in a series of 3:
- The first one (here) integrates the backbone of Miniscript.
- The second one (#24148) introduces support for Miniscript in Output Descriptors, allowing for watch-only support of Miniscript Descriptors in the wallet.
- The third one (#24149) implements signing for these Miniscript Descriptors, using Miniscript's satisfaction algorithm.
Note to reviewers:
- Miniscript is currently defined only for P2WSH. No Taproot yet.
- Miniscript is different from the policy language (a high-level logical representation of a spending policy). A policy->Miniscript compiler is not included here.
- The fuzz target included here is more interestingly extended in the 3rd PR to check a script's satisfaction against `VerifyScript`. I think it could be further improved by having custom mutators as we now have for multisig (see https://github.com/bitcoin/bitcoin/issues/23105). A minified corpus of Miniscript Scripts is available at https://github.com/bitcoin-core/qa-assets/pull/85.
[0] We call "valid" any correctly-typed Miniscript. And "safe" any sane Miniscript, ie one whose satisfaction isn't malleable, which requires a key for any spending path, etc..
ACKs for top commit:
jb55:
ACK 2da94a4c6f55f7a3621f4a6f70902c52f735c868
laanwj:
Light code review ACK 2da94a4c6f55f7a3621f4a6f70902c52f735c868 (mostly reviewed the changes to the existing code and build system)
Tree-SHA512: d3ef558436cfcc699a50ad13caf1e776f7d0addddb433ee28ef38f66ea5c3e581382d8c748ccac9b51768e4b95712ed7a6112b0e3281a6551e0f325331de9167
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context information
9b526727000509dc6ef90f2ce6a9049edebf959c For descriptor pubkey parse errors, include context information (Ben Woosley)
Pull request description:
This adds readily-available context information to the error string, for further disambiguation.
This is a revival of #16123 which was largely addressed in #16542.
Note 'Multi:' is used rather than 'multi():' as it also encompasses 'sortedmulti():'
ACKs for top commit:
achow101:
ACK 9b526727000509dc6ef90f2ce6a9049edebf959c
theStack:
ACK 9b526727000509dc6ef90f2ce6a9049edebf959c
Tree-SHA512: 96533ea8c3ac7010f9b62e75b4bd20b65aff843030eb91c7a88312975acecaaf17909b7d1841f45edc86dbf7fa402d208adb85f0673bd79b857dbebacb8c9395
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Co-Authored-By: Antoine Poinsot <darosior@protonmail.com>
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Co-Authored-By: Antoine Poinsot <darosior@protonmail.com>
Co-Authored-By: Samuel Dobson <dobsonsa68@gmail.com>
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More information about Miniscript can be found at https://bitcoin.sipa.be/miniscript/ (the
website source is hosted at https://github.com/sipa/miniscript/).
This commit defines all fragments, their composition, parsing from
string representation and conversion to Script.
Co-Authored-By: Antoine Poinsot <darosior@protonmail.com>
Co-Authored-By: Sanket Kanjalkar <sanket1729@gmail.com>
Co-Authored-By: Samuel Dobson <dobsonsa68@gmail.com>
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Some prep work for Miniscript. BuildScript is an efficient way to build
Scripts in a generic manner (by concatenating OPs, data, and other
Scripts).
Co-Authored-By: Pieter Wuille <pieter@wuille.net>
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It is used by Miniscript.
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We'll need it for Miniscript
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fae20e6b50306f91c74037e915aa0ab75a0a6b3b Revert "Avoid the use of P0083R3 std::set::merge" (MarcoFalke)
fab53b5fd45cf55a1d4d313e46ffce7396c9590e ci/doc: Set minimum required clang/libc++ version to 8.0 (MarcoFalke)
Pull request description:
This is not for 23.0, but for 24.0. It comes with the following benefits:
* Can use C++17 P0083R3 std::set::merge from libc++ 8.0
* No longer need to provide support for clang-7, which already fails to compile on some architectures (https://github.com/bitcoin/bitcoin/issues/21294#issuecomment-998098483)
This should be fine, given that all supported operating systems ship with at least clang-10:
* CentOS 8: clang-12
* Stretch: https://packages.debian.org/stretch/clang-11
* Buster: https://packages.debian.org/buster-backports/clang-11
* Bionic: https://packages.ubuntu.com/bionic-updates/clang-10
* Focal: https://packages.ubuntu.com/focal/clang-10
ACKs for top commit:
fanquake:
ACK fae20e6b50306f91c74037e915aa0ab75a0a6b3b - I think this is fine to do. I would be surprised if in another 6 months time someone was stuck on a system we supported, needing to compile Core, and only had access to Clang 7 or older. As mentioned in the PR description, all systems we currently support, already support multiple newer versions of Clang.
hebasto:
ACK fae20e6b50306f91c74037e915aa0ab75a0a6b3b, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: 3b4c6c130ff40dd7e84934af076863415e5dd661d823c72e3e3832566c65be6e877a7ef9164bbcf394bcea4b897fc29a48db0f231c22ace0e2c9b5638659a628
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This reverts commit 6cf4ea71878c0a83f2e49831e4dfa119c53761b7.
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multisig inside tr
4828d53eccd52a67631c64cef0ba7df90dff138d Add (sorted)multi_a descriptors to doc/descriptors.md (Pieter Wuille)
b5f33ac1f82aea290b4653af36ac2ad1bf1cce7b Simplify wallet_taproot.py functional test (Pieter Wuille)
eb0667ea96d52db9135514a5e95ab943f6abd8a6 Add tests for (sorted)multi_a derivation/signing (Pieter Wuille)
c17c6aa08df81aa0086d80b50187c8cd60ecc222 Add signing support for (sorted)multi_a scripts (Pieter Wuille)
3eed6fca57d1fa7544f372e6e7de0a9ae1b5715a Add multi_a descriptor inference (Pieter Wuille)
79728c4a3d8a74f276daf1e72abbdecdab85a5d8 Add (sorted)multi_a descriptor and script derivation (Pieter Wuille)
25e95f9ff89a97b87ce218f28274c3c821b2d54d Merge/generalize IsValidMultisigKeyCount/GetMultisigKeyCount (Pieter Wuille)
Pull request description:
This adds a new `multi_a(k,key_1,key_2,...,key_n)` (and corresponding `sortedmulti_a`) descriptor for k-of-n policies inside `tr()`. Semantically it is very similar to the existing `multi()` descriptor, but with the following changes:
* The corresponding script is `<key1> OP_CHECKSIG <key2> OP_CHECKSIGADD <key3> OP_CHECKSIGADD ... <key_n> OP_CHECKSIGADD <k> OP_NUMEQUAL`, rather than the traditional `OP_CHECKMULTISIG`-based script, making it usable inside the `tr()` descriptor.
* The keys can optionally be specified in x-only notation.
* Both the number of keys and the threshold can be as high as 999; this is the limit due to the consensus stacksize=1000 limit
I expect that this functionality will later be replaced with a miniscript-based implementation, but I don't think it's necessary to wait for that.
Limitations:
* The wallet code will for not estimate witness size incorrectly for script path spends, which may result in a (dramatic) fee underpayment with large multi_a scripts.
* The multi_a script construction is (slightly) suboptimal for n-of-n (where a `<key1> OP_CHECKSIGVERIFY ... <key_n-1> OP_CHECKSIGVERIFY <key_n> OP_CHECKSIG` would be better). Such a construction is not included here.
ACKs for top commit:
achow101:
ACK 4828d53eccd52a67631c64cef0ba7df90dff138d
gruve-p:
ACK https://github.com/bitcoin/bitcoin/pull/24043/commits/4828d53eccd52a67631c64cef0ba7df90dff138d
sanket1729:
code review ACK 4828d53eccd52a67631c64cef0ba7df90dff138d
darosior:
Code review ACK 4828d53eccd52a67631c64cef0ba7df90dff138d
Tree-SHA512: 5dcd434b79585f0ff830f7d501d27df5e346f5749f47a3109ec309ebf2cbbad0e1da541eec654026d911ab67fd7cf7793fab0f765628d68d81b96ef2a4d234ce
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Note 'Multi:' is used rather than 'multi():' as it also encompasses 'sortedmulti():'
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fa5d2e678c809c26bd40d7e7c171529d3ffb5903 Remove unused char serialize (MarcoFalke)
fa24493d6394b3a477535f480664c9596f18e3c5 Use spans of std::byte in serialize (MarcoFalke)
fa65bbf217b725ada35107b4ad646d250228355c span: Add BytePtr helper (MarcoFalke)
Pull request description:
This changes the serialize code (`.read()` and `.write()` functions) to take a `Span` instead of a pointer and size. This is a breaking change for the serialize interface, so at no additional cost we can also switch to `std::byte` (instead of using `char`).
The benefits of using `Span`:
* Less verbose and less fragile code when passing an already existing `Span`(-like) object to or from serialization
The benefits of using `std::byte`:
* `std::byte` can't accidentally be mistaken for an integer
The goal here is to only change serialize to use spans of `std::byte`. If needed, `AsBytes`, `MakeUCharSpan`, ... can be used (temporarily) to pass spans of the right type.
Other changes that are included here:
* [#22167](https://github.com/bitcoin/bitcoin/pull/22167) (refactor: Remove char serialize by MarcoFalke)
* [#21906](https://github.com/bitcoin/bitcoin/pull/21906) (Preserve const in cast on CTransactionSignatureSerializer by promag)
ACKs for top commit:
laanwj:
Concept and code review ACK fa5d2e678c809c26bd40d7e7c171529d3ffb5903
sipa:
re-utACK fa5d2e678c809c26bd40d7e7c171529d3ffb5903
Tree-SHA512: 08ee9eced5fb777cedae593b11e33660bed9a3e1711a7451a87b835089a96c99ce0632918bb4666a4e859c4d020f88fb50f2dd734216b0c3d1a9a704967ece6f
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This switches .read() and .write() to take spans of bytes.
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-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
Commits of previous years:
* 2020: fa0074e2d82928016a43ca408717154a1c70a4db
* 2019: aaaaad6ac95b402fe18d019d67897ced6b316ee0
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module
SerializeToVector, UnserializeFromVector, DeserializeHDKeypaths, and SerializeHDKeypaths
were in sign.h where PSBT was originally implemented. Since all of the PSBT serialization
has moved to its own file, these functions should follow.
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Based on suggestions by MarcoFalke <falke.marco@gmail.com>
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4868c9f1b39f03adee0009cd41d96598b43e8b78 Extract Taproot internal keyid with GetKeyFromDestination (Andrew Chow)
d8abbe119c71f917e0fd2e80536c1e5d979b4dc6 Mention bech32m in -addresstype and -changetype help (Andrew Chow)
8fb57845ee3844c9ba854471065109d2e409300f Create a tr() descriptor bech32m DescriptorScriptPubKeyMan by default (Andrew Chow)
54b3699862de687f782c7c52500d6a2372478355 Store pubkeys in TRDescriptor::MakeScripts (Andrew Chow)
Pull request description:
Make a `tr()` descriptor by default in descriptor wallets so that users will be able to make and use segwit v1 bech32m addresses.
ACKs for top commit:
MarcoFalke:
Concept ACK 4868c9f1b39f03adee0009cd41d96598b43e8b78
Sjors:
re-utACK 4868c9f1b39f03adee0009cd41d96598b43e8b78
gruve-p:
ACK https://github.com/bitcoin/bitcoin/pull/22364/commits/4868c9f1b39f03adee0009cd41d96598b43e8b78
meshcollider:
Concept + code review ACK 4868c9f1b39f03adee0009cd41d96598b43e8b78
Tree-SHA512: e5896e665b8d559f1d759b6582d1bb24f70d4698a57307684339d9fdcdac28ae9bc17bc946a7efec9cb35c130a95ffc36e3961a335124ec4535d77b8d00e9631
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Argument names of "nInIn" are not helpful.
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When expanding the scripts for a TRDescriptor, also store the pubkeys in
the FlatSigningProvider.
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libsecp256k1's secp256k1_schnorrsig_sign only follows BIP340 exactly
if an aux_rand32 argument is passed. When no randomness is used
(as is the case in the current codebase here), there is no impact
on security between not providing aux_rand32 at all, or providing
an empty one. Yet, for repeatability/testability it is simpler
to always use an all-zero one.
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Move amount.h to consensus/amount.h.
Renames, adds missing and removes uneeded includes.
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corresponding code/logic
43cd6b8af9d613ca033800c5cd8524c3f77e13ec doc: add release notes for removal of the -deprecatedrpc=addresses flag (Michael Dietz)
2b1fdc2c6ce1d0b0e51a3f107e23443c142d57af refactor: minor styling, prefer snake case and same line if (Michael Dietz)
d64deac7b823a0eba97ab3a3686054eefe330d3c refactor: share logic between ScriptPubKeyToUniv and ScriptToUniv (Michael Dietz)
8721638daa8502c7f8de5ae24a9393d7290a2ce5 rpc: remove deprecated addresses and reqSigs from rpc outputs (Michael Dietz)
Pull request description:
Resolves #21797 now that we've branched-off to v23 ("addresses" and "reqSigs" deprecated) "ExtractDestinations" should be removed.
`-deprecatedrpc=addresses` was initially added in this PR #20286 (which resolved the original issue #20102).
Some chunks of code and logic are no longer used/necessary with the removal of this, and therefore some minor refactoring is done in this PR as well (separated commits)
ACKs for top commit:
MarcoFalke:
re-ACK 43cd6b8af9d613ca033800c5cd8524c3f77e13ec 🐉
meshcollider:
Code review ACK 43cd6b8af9d613ca033800c5cd8524c3f77e13ec
jonatack:
ACK 43cd6b8af9d613ca033800c5cd8524c3f77e13ec per `git range-diff a9d0cec 92dc5e9 43cd6b8`, also rebased to latest master, debug built + quick re-review of each commit to bring back context, and ran tests locally at the final commit
Tree-SHA512: fba83495e396d3c06f0dcf49292f14f4aa6b68fa758f0503941fade1a6e7271cda8378e2734af1faea550d1b43c85a36c52ebcc9dec0732936f9233b4b97901c
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