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descriptor: Try the other parity in ConstPubkeyProvider::GetPrivKey()

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GetPrivKey() needs the same handling of all keyids for xonly keys that
ToPrivateString() does. Refactor that into GetPrivKey() and reuse it in
ToPrivateString() to resolve this.
This commit is contained in:
Ava Chow 2025-01-01 23:17:44 -05:00
parent 228aba2c4d
commit 092569e858
1 changed files with 3 additions and 10 deletions
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13
src/script/descriptor.cpp
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@ -312,15 +312,7 @@ public:
bool ToPrivateString(const SigningProvider& arg, std::string& ret) const override bool ToPrivateString(const SigningProvider& arg, std::string& ret) const override
{ {
CKey key; CKey key;
if (m_xonly) { if (!GetPrivKey(/*pos=*/0, arg, key)) return false;
for (const auto& keyid : XOnlyPubKey(m_pubkey).GetKeyIDs()) {
arg.GetKey(keyid, key);
if (key.IsValid()) break;
}
} else {
arg.GetKey(m_pubkey.GetID(), key);
}
if (!key.IsValid()) return false;
ret = EncodeSecret(key); ret = EncodeSecret(key);
return true; return true;
} }
@ -331,7 +323,8 @@ public:
} }
bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const override bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const override
{ {
return arg.GetKey(m_pubkey.GetID(), key); return m_xonly ? arg.GetKeyByXOnly(XOnlyPubKey(m_pubkey), key) :
arg.GetKey(m_pubkey.GetID(), key);
} }
std::optional<CPubKey> GetRootPubKey() const override std::optional<CPubKey> GetRootPubKey() const override
{ {