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Add signing support for (sorted)multi_a scripts

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This commit is contained in:
Pieter Wuille 2022-01-10 18:12:14 -05:00
parent 3eed6fca57
commit c17c6aa08d
1 changed files with 23 additions and 0 deletions
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23
src/script/sign.cpp
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@ -174,6 +174,29 @@ static bool SignTaprootScript(const SigningProvider& provider, const BaseSignatu
result = Vector(std::move(sig));
return true;
}
return false;
}
// multi_a scripts (<key> OP_CHECKSIG <key> OP_CHECKSIGADD <key> OP_CHECKSIGADD <k> OP_NUMEQUAL)
if (auto match = MatchMultiA(script)) {
std::vector<std::vector<unsigned char>> sigs;
int good_sigs = 0;
for (size_t i = 0; i < match->second.size(); ++i) {
XOnlyPubKey pubkey{*(match->second.rbegin() + i)};
std::vector<unsigned char> sig;
bool good_sig = CreateTaprootScriptSig(creator, sigdata, provider, sig, pubkey, leaf_hash, sigversion);
if (good_sig && good_sigs < match->first) {
++good_sigs;
sigs.push_back(std::move(sig));
} else {
sigs.emplace_back();
}
}
if (good_sigs == match->first) {
result = std::move(sigs);
return true;
}
return false;
}
return false;