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script/sign: Miniscript support in Tapscript

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We make the Satisfier a base in which to store the common methods
between the Tapscript and P2WSH satisfier, and from which they both
inherit.

A field is added to SignatureData to be able to satisfy pkh() under
Tapscript context (to get the pubkey hash preimage) without wallet data.
For instance in `finalizepsbt` RPC. See also the next commits for a
functional test that exercises this.
This commit is contained in:
Antoine Poinsot
2023-02-24 16:34:12 +01:00
parent febe2abc0e
commit 4f473ea515
4 changed files with 97 additions and 68 deletions
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2
src/psbt.cpp
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@@ -132,6 +132,7 @@ void PSBTInput::FillSignatureData(SignatureData& sigdata) const
}
for (const auto& [pubkey, leaf_origin] : m_tap_bip32_paths) {
sigdata.taproot_misc_pubkeys.emplace(pubkey, leaf_origin);
sigdata.tap_pubkeys.emplace(Hash160(pubkey), pubkey);
}
for (const auto& [hash, preimage] : ripemd160_preimages) {
sigdata.ripemd160_preimages.emplace(std::vector<unsigned char>(hash.begin(), hash.end()), preimage);
@@ -246,6 +247,7 @@ void PSBTOutput::FillSignatureData(SignatureData& sigdata) const
}
for (const auto& [pubkey, leaf_origin] : m_tap_bip32_paths) {
sigdata.taproot_misc_pubkeys.emplace(pubkey, leaf_origin);
sigdata.tap_pubkeys.emplace(Hash160(pubkey), pubkey);
}
}