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commands: set the BIP32 derivation in PSBT for change outputs

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So the signing devices (or even the GUI) can view them as such.
This commit is contained in:
Antoine Poinsot 2022-11-17 15:01:34 +01:00
parent dbf17681a4
commit 838daa0c93
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GPG Key ID: E13FC145CD3F4304
1 changed files with 21 additions and 4 deletions
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25
src/commands/mod.rs
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@ -333,9 +333,23 @@ impl DaemonControl {
value: amount.to_sat(),
script_pubkey: address.script_pubkey(),
});
// TODO: if it's an address of ours, signal it as change to signing devices by adding
// the BIP32 derivation path to the PSBT output.
psbt_outs.push(PsbtOut::default());
// If it's an address of ours, signal it as change to signing devices by adding the
// BIP32 derivation path to the PSBT output.
let bip32_derivation =
if let Some((index, is_change)) = db_conn.derivation_index_by_address(address) {
let desc = if is_change {
self.config.main_descriptor.change_descriptor()
} else {
self.config.main_descriptor.receive_descriptor()
};
desc.derive(index, &self.secp).bip32_derivations()
} else {
Default::default()
};
psbt_outs.push(PsbtOut {
bip32_derivation,
..PsbtOut::default()
});
}
// Now create the transaction, compute its fees and already sanity check if its feerate
@ -398,7 +412,10 @@ impl DaemonControl {
// TODO: shuffle once we have Taproot
change_txo.value = change_amount.to_sat();
tx.output.push(change_txo);
psbt_outs.push(PsbtOut::default());
psbt_outs.push(PsbtOut {
bip32_derivation: change_desc.bip32_derivations(),
..PsbtOut::default()
});
}
}
}