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transaction.py: impl taproot key-spends

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Add support for key-path-spending taproot utxos into transaction.py.

- no wallet support yet
- add some psbt, and minimal descriptor support
- preliminary work towards script-path spends
This commit is contained in:
SomberNight
2024-05-23 16:09:59 +00:00
parent 7a0bffc3e3
commit 3a305881cc
11 changed files with 978 additions and 152 deletions
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19
tests/test_descriptor.py
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@@ -227,19 +227,36 @@ class TestDescriptor(ElectrumTestCase):
self.assertEqual(desc.pubkeys[0].origin.get_derivation_path(), "m/84h/1h/0h")
self.assertEqual(desc.pubkeys[0].pubkey, "tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B")
self.assertEqual(desc.pubkeys[0].deriv_path, "/0/0")
self.assertEqual(desc.get_max_tree_depth(), None)
self.assertEqual(desc.to_string_no_checksum(), d)
d = "tr([00000001/84h/1h/0h]tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/0/0,{pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B),{{pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B),pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B)},pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B)}})"
desc = parse_descriptor(d)
self.assertTrue(isinstance(desc, TRDescriptor))
self.assertEqual(len(desc.subdescriptors), 4)
self.assertEqual(len(desc.desc_tree), 2)
self.assertEqual(len(desc.pubkeys), 1)
self.assertEqual(desc.pubkeys[0].origin.fingerprint.hex(), "00000001")
self.assertEqual(desc.pubkeys[0].origin.get_derivation_path(), "m/84h/1h/0h")
self.assertEqual(desc.pubkeys[0].pubkey, "tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B")
self.assertEqual(desc.pubkeys[0].deriv_path, "/0/0")
self.assertEqual(desc.depths, [1, 3, 3, 2])
self.assertEqual(desc.desc_tree[0].to_string_no_checksum(), "pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B)")
self.assertEqual(desc.desc_tree[1][0][0].to_string_no_checksum(), "pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B)")
self.assertEqual(desc.desc_tree[1][0][1].to_string_no_checksum(), "pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B)")
self.assertEqual(desc.desc_tree[1][1].to_string_no_checksum(), "pk(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B)")
self.assertEqual(desc.get_max_tree_depth(), 3)
self.assertEqual(desc.to_string_no_checksum(), d)
def test_tr_descriptor_bip386(self):
# test vectors from https://github.com/bitcoin/bips/blob/e2f7481a132e1c5863f5ffcbff009964d7c2af20/bip-0386.mediawiki#test-vectors
# TODO add missing tests
self.assertEqual(
"512077aab6e066f8a7419c5ab714c12c67d25007ed55a43cadcacb4d7a970a093f11",
parse_descriptor("tr(a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd)").expand().output_script.hex())
self.assertEqual(
"512017cf18db381d836d8923b1bdb246cfcd818da1a9f0e6e7907f187f0b2f937754",
parse_descriptor("tr(a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd,pk(669b8afcec803a0d323e9a17f3ea8e68e8abe5a278020a929adbec52421adbd0))").expand().output_script.hex())
@as_testnet
def test_parse_descriptor_with_range(self):
d = "wpkh([00000001/84h/1h/0h]tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/0/*)"