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Check for private keys disabled before attempting unlock #773

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Feb 12, 2024
Merged

Check for private keys disabled before attempting unlock #773

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7 changes: 7 additions & 0 deletions src/qt/walletmodel.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -449,6 +449,13 @@ void WalletModel::unsubscribeFromCoreSignals()
// WalletModel::UnlockContext implementation
WalletModel::UnlockContext WalletModel::requestUnlock()
{
// Bugs in earlier versions may have resulted in wallets with private keys disabled to become "encrypted"
// (encryption keys are present, but not actually doing anything).
// To avoid issues with such wallets, check if the wallet has private keys disabled, and if so, return a context
// that indicates the wallet is not encrypted.
if (m_wallet->privateKeysDisabled()) {
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It's a pity that getEncryptionStatus() == NoKeys does not work here.

Is it worth to warn the user when they load a watch-only wallet with an encryption keys?

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It's a pity that getEncryptionStatus() == NoKeys does not work here.

It could, but #631 states that NoKeys is not returned for encrypted watchonly so that other users of getEncryptionStatus() get this status correctly. Perhaps that isn't necessary, but I wanted to keep this change targeted for just this specific issue and changing getEncryptionStatus()'s behavior could have unanticipated side effects.

Is it worth to warn the user when they load a watch-only wallet with an encryption keys?

bitcoin/bitcoin#28724 proposes to just delete them for the user on loading.

return UnlockContext(this, /*valid=*/true, /*relock=*/false);
}
bool was_locked = getEncryptionStatus() == Locked;
if(was_locked)
{
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