43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#include "config.h"
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#include <bitcoin/tx.h>
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#include <common/psbt_keypath.h>
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#include <common/utils.h>
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#include <wally_bip32.h>
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void psbt_output_set_keypath(u32 index, const struct ext_key *ext, bool is_taproot, struct wally_psbt_output *output) {
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u8 fingerprint[BIP32_KEY_FINGERPRINT_LEN];
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if (bip32_key_get_fingerprint(
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(struct ext_key *) ext, fingerprint, sizeof(fingerprint)) != WALLY_OK)
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abort();
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u32 path[1];
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path[0] = index;
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if (is_taproot) {
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if (wally_psbt_output_taproot_keypath_add(output,
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ext->pub_key + 1, sizeof(ext->pub_key) - 1,
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NULL, 0,
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fingerprint, sizeof(fingerprint),
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path, 1) != WALLY_OK)
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abort();
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} else {
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if (wally_psbt_output_keypath_add(output,
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ext->pub_key, sizeof(ext->pub_key),
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fingerprint, sizeof(fingerprint),
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path, 1) != WALLY_OK)
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abort();
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}
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}
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void psbt_add_keypath_to_last_output(struct bitcoin_tx *tx,
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u32 key_index,
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const struct ext_key *ext,
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bool is_taproot) {
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size_t outndx = tx->psbt->num_outputs - 1;
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tal_wally_start();
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psbt_output_set_keypath(key_index, ext, is_taproot, &tx->psbt->outputs[outndx]);
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tal_wally_end(tx->psbt);
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}
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