From 77bb74e842f729d5494e7b66563758e6d2f53785 Mon Sep 17 00:00:00 2001 From: kdmukai Date: Mon, 26 Aug 2024 08:47:38 -0500 Subject: [PATCH 1/7] Initial BIP-352 support --- src/embit/bip352.py | 25 +++++++++++++++++++++ tests/tests/test_bip352.py | 45 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 70 insertions(+) create mode 100644 src/embit/bip352.py create mode 100644 tests/tests/test_bip352.py diff --git a/src/embit/bip352.py b/src/embit/bip352.py new file mode 100644 index 0000000..0ed009d --- /dev/null +++ b/src/embit/bip352.py @@ -0,0 +1,25 @@ +""" +BIP-352: Silent Payments +see: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki + +TODO: +* Add support for SP labels. +* Implement deriving a destination addr for a given output and recipient SP address. +* Implement check to determine if a given output is an SP output for a given SP address. +* Implement signing SP spends (once psbt format is settled). +""" + +from embit import bech32, ec + + +def generate_silent_payment_address(B_scan: ec.PublicKey, B_m: ec.PublicKey, network: str = "main", version: int = 0) -> str: + """ + Adapted from https://github.com/bitcoin/bips/blob/master/bip-0352/reference.py + + Generates the recipient's reusable silent payment address for a given: + * scanning pubkey `B_scan` + * spending pubkey `B_m` + """ + data = bech32.convertbits(B_scan.sec() + B_m.sec(), 8, 5) + hrp = "sp" if network == "main" else "tsp" + return bech32.bech32_encode(bech32.Encoding.BECH32M, hrp, [version] + data) diff --git a/tests/tests/test_bip352.py b/tests/tests/test_bip352.py new file mode 100644 index 0000000..e0d73ce --- /dev/null +++ b/tests/tests/test_bip352.py @@ -0,0 +1,45 @@ +""" +BIP-352 test vectors: +https://github.com/bitcoin/bips/blob/master/bip-0352/send_and_receive_test_vectors.json +""" + +from binascii import unhexlify +from unittest import TestCase +from embit import bip352 +from embit.ec import PrivateKey +from embit.networks import NETWORKS + + +BASIC_TEST_VECTORS = [ + { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c", + "sp_address": "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + }, + { + "spend_priv_key": "0000000000000000000000000000000000000000000000000000000000000001", + "scan_priv_key": "0000000000000000000000000000000000000000000000000000000000000002", + "sp_address": "sp1qqtrqglu5g8kh6mfsg4qxa9wq0nv9cauwfwxw70984wkqnw2uwz0w2qnehen8a7wuhwk9tgrzjh8gwzc8q2dlekedec5djk0js9d3d7qhnq6lqj3s" + } +] + + +class BIP352Test(TestCase): + def test_generate_silent_payment_address(self): + """ Should generate the expected silent payment address """ + for test_vector in BASIC_TEST_VECTORS: + spend_priv_key = PrivateKey(unhexlify(test_vector["spend_priv_key"])) + scan_priv_key = PrivateKey(unhexlify(test_vector["scan_priv_key"])) + sp_address = bip352.generate_silent_payment_address(scan_priv_key.get_public_key(), spend_priv_key.get_public_key()) + assert sp_address == test_vector["sp_address"] + + + def test_generate_silent_payment_address_for_network(self): + """ Test network silent payment addrs should start with "tsp" """ + test_networks = [k for k in NETWORKS.keys() if k != "main"] + scan_pubkey = PrivateKey(unhexlify(BASIC_TEST_VECTORS[0]["spend_priv_key"])).get_public_key() + spend_pubkey = PrivateKey(unhexlify(BASIC_TEST_VECTORS[0]["scan_priv_key"])).get_public_key() + + for network in test_networks: + payment_addr = bip352.generate_silent_payment_address(scan_pubkey, spend_pubkey, network=network) + assert payment_addr.startswith("tsp") From db30cd0e03598db6c801717e5511d974c4c11318 Mon Sep 17 00:00:00 2001 From: kdmukai Date: Tue, 31 Dec 2024 13:38:35 -0600 Subject: [PATCH 2/7] Add labeled SP addrs --- src/embit/bip352.py | 36 +++++++++++++++++++++++++-------- tests/tests/test_bip352.py | 41 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+), 8 deletions(-) diff --git a/src/embit/bip352.py b/src/embit/bip352.py index 0ed009d..0a33bef 100644 --- a/src/embit/bip352.py +++ b/src/embit/bip352.py @@ -3,23 +3,43 @@ see: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki TODO: -* Add support for SP labels. * Implement deriving a destination addr for a given output and recipient SP address. * Implement check to determine if a given output is an SP output for a given SP address. * Implement signing SP spends (once psbt format is settled). """ - from embit import bech32, ec +from embit.util import secp256k1 +from embit.hashes import tagged_hash + -def generate_silent_payment_address(B_scan: ec.PublicKey, B_m: ec.PublicKey, network: str = "main", version: int = 0) -> str: +def generate_silent_payment_address(B_scan: ec.PublicKey, B_spend: ec.PublicKey, network: str = "main", version: int = 0) -> str: """ Adapted from https://github.com/bitcoin/bips/blob/master/bip-0352/reference.py - - Generates the recipient's reusable silent payment address for a given: - * scanning pubkey `B_scan` - * spending pubkey `B_m` """ - data = bech32.convertbits(B_scan.sec() + B_m.sec(), 8, 5) + data = bech32.convertbits(B_scan.sec() + B_spend.sec(), 8, 5) hrp = "sp" if network == "main" else "tsp" return bech32.bech32_encode(bech32.Encoding.BECH32M, hrp, [version] + data) + + + +def generate_labeled_silent_payment_address(b_scan: ec.PrivateKey, B_spend: ec.PublicKey, label, network: str = "main", version: int = 0) -> str: + """ + The spending key is tweaked with the label to generate a labeled silent payment address. + see: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki#address-encoding + + `label` must be an int, str, or bytes. + """ + if isinstance(label, int): + label_bytes = label.to_bytes(4, "big") + elif isinstance(label, str): + label_bytes = label.encode() + elif isinstance(label, bytes): + label_bytes = label + else: + raise Exception("Label must be an int, str, or bytes.") + + tweak = tagged_hash("BIP0352/Label", b_scan.secret + label_bytes) + label_pubkey = ec.PublicKey(secp256k1.ec_pubkey_add(secp256k1.ec_pubkey_parse(B_spend.sec()), tweak)) + + return generate_silent_payment_address(b_scan.get_public_key(), label_pubkey, network=network, version=version) diff --git a/tests/tests/test_bip352.py b/tests/tests/test_bip352.py index e0d73ce..f613a19 100644 --- a/tests/tests/test_bip352.py +++ b/tests/tests/test_bip352.py @@ -5,6 +5,8 @@ from binascii import unhexlify from unittest import TestCase + +import pytest from embit import bip352 from embit.ec import PrivateKey from embit.networks import NETWORKS @@ -24,6 +26,22 @@ ] +LABEL_TEST_VECTORS = { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c", + "labels": [ + 2, + 3, + 1001337 + ], + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjex54dmqmmv6rw353tsuqhs99ydvadxzrsy9nuvk74epvee55drs734pqq", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqsg59z2rppn4qlkx0yz9sdltmjv3j8zgcqadjn4ug98m3t6plujsq9qvu5n", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5" + ] +} + + class BIP352Test(TestCase): def test_generate_silent_payment_address(self): """ Should generate the expected silent payment address """ @@ -43,3 +61,26 @@ def test_generate_silent_payment_address_for_network(self): for network in test_networks: payment_addr = bip352.generate_silent_payment_address(scan_pubkey, spend_pubkey, network=network) assert payment_addr.startswith("tsp") + + + def test_generate_labeled_silent_payment_address(self): + """ Should generate the expected labeled silent payment addresses """ + spend_priv_key = PrivateKey(unhexlify(LABEL_TEST_VECTORS["spend_priv_key"])) + scan_priv_key = PrivateKey(unhexlify(LABEL_TEST_VECTORS["scan_priv_key"])) + for label, address in zip(LABEL_TEST_VECTORS["labels"], LABEL_TEST_VECTORS["addresses"]): + sp_address = bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label) + assert sp_address == address + + # Label may also be a string, but the bip does not provide any test vectors + bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label="tenant 6102") + + # Label may also be passed in as bytes + bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label="I am bytes".encode()) + + with pytest.raises(Exception): + # Label is required + bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key()) + + with pytest.raises(Exception): + # Label must be an int, str, or bytes + bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label=1.0) From cc98d4542f399b377b26e6c5e1cd0aaddc5b1307 Mon Sep 17 00:00:00 2001 From: notTanveer Date: Sat, 12 Jul 2025 20:21:06 +0530 Subject: [PATCH 3/7] decode sp addr --- src/embit/bip352.py | 85 ++++++++++++++++++++++++++++++++--- tests/tests/test_bip352.py | 90 +++++++++++++++++++++++++++----------- 2 files changed, 143 insertions(+), 32 deletions(-) diff --git a/src/embit/bip352.py b/src/embit/bip352.py index 0a33bef..bff3eaa 100644 --- a/src/embit/bip352.py +++ b/src/embit/bip352.py @@ -10,10 +10,13 @@ from embit import bech32, ec from embit.util import secp256k1 from embit.hashes import tagged_hash +from typing import Tuple +from embit.util.key import ECPubKey - -def generate_silent_payment_address(B_scan: ec.PublicKey, B_spend: ec.PublicKey, network: str = "main", version: int = 0) -> str: +def generate_silent_payment_address( + B_scan: ec.PublicKey, B_spend: ec.PublicKey, network: str = "main", version: int = 0 +) -> str: """ Adapted from https://github.com/bitcoin/bips/blob/master/bip-0352/reference.py """ @@ -22,8 +25,13 @@ def generate_silent_payment_address(B_scan: ec.PublicKey, B_spend: ec.PublicKey, return bech32.bech32_encode(bech32.Encoding.BECH32M, hrp, [version] + data) - -def generate_labeled_silent_payment_address(b_scan: ec.PrivateKey, B_spend: ec.PublicKey, label, network: str = "main", version: int = 0) -> str: +def generate_labeled_silent_payment_address( + b_scan: ec.PrivateKey, + B_spend: ec.PublicKey, + label, + network: str = "main", + version: int = 0, +) -> str: """ The spending key is tweaked with the label to generate a labeled silent payment address. see: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki#address-encoding @@ -40,6 +48,71 @@ def generate_labeled_silent_payment_address(b_scan: ec.PrivateKey, B_spend: ec.P raise Exception("Label must be an int, str, or bytes.") tweak = tagged_hash("BIP0352/Label", b_scan.secret + label_bytes) - label_pubkey = ec.PublicKey(secp256k1.ec_pubkey_add(secp256k1.ec_pubkey_parse(B_spend.sec()), tweak)) + label_pubkey = ec.PublicKey( + secp256k1.ec_pubkey_add(secp256k1.ec_pubkey_parse(B_spend.sec()), tweak) + ) + + return generate_silent_payment_address( + b_scan.get_public_key(), label_pubkey, network=network, version=version + ) + + +def decode_silent_payment_address(address: str) -> Tuple[ec.PublicKey, ec.PublicKey]: + """ + Decode a silent payment address and return the scan and spend public keys. + Silent payment addresses can be longer than 90 characters, so we need custom decoding. + """ + if address.startswith("sp1"): + hrp = "sp" + elif address.startswith("tsp1"): + hrp = "tsp" + else: + raise ValueError("Invalid silent payment address: unknown HRP") + + # custom bech32 to bypass the 90-character limit + if (any(ord(x) < 33 or ord(x) > 126 for x in address)) or ( + address.lower() != address and address.upper() != address + ): + raise ValueError("Invalid silent payment address: invalid characters") + + address = address.lower() + pos = address.rfind("1") + if pos < 1 or pos + 7 > len(address): + raise ValueError("Invalid silent payment address: invalid format") + + if not all(x in bech32.CHARSET for x in address[pos + 1 :]): + raise ValueError( + "Invalid silent payment address: invalid characters in data part" + ) + + hrpgot = address[:pos] + data = [bech32.CHARSET.find(x) for x in address[pos + 1 :]] + + if hrpgot != hrp: + raise ValueError("Invalid silent payment address: HRP mismatch") + + encoding = bech32.bech32_verify_checksum(hrpgot, data) + if encoding is None: + raise ValueError("Invalid silent payment address: checksum verification failed") + + if encoding != bech32.Encoding.BECH32M: + raise ValueError("Invalid silent payment address: must use bech32m encoding") + + data = data[:-6] + + if data[0] != 0: + raise ValueError( + f"Invalid silent payment address: unsupported version {data[0]}" + ) + + decoded = bech32.convertbits(data[1:], 5, 8, False) + if decoded is None: + raise ValueError("Invalid silent payment address: conversion failed") + + try: + B_scan = ec.PublicKey.parse(bytes(decoded[:33])) + B_spend = ec.PublicKey.parse(bytes(decoded[33:])) + except Exception as e: + raise ValueError(f"Invalid silent payment address: invalid public keys - {e}") - return generate_silent_payment_address(b_scan.get_public_key(), label_pubkey, network=network, version=version) + return B_scan, B_spend diff --git a/tests/tests/test_bip352.py b/tests/tests/test_bip352.py index f613a19..7739f77 100644 --- a/tests/tests/test_bip352.py +++ b/tests/tests/test_bip352.py @@ -16,71 +16,109 @@ { "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c", - "sp_address": "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + "sp_address": "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", }, { "spend_priv_key": "0000000000000000000000000000000000000000000000000000000000000001", "scan_priv_key": "0000000000000000000000000000000000000000000000000000000000000002", - "sp_address": "sp1qqtrqglu5g8kh6mfsg4qxa9wq0nv9cauwfwxw70984wkqnw2uwz0w2qnehen8a7wuhwk9tgrzjh8gwzc8q2dlekedec5djk0js9d3d7qhnq6lqj3s" - } + "sp_address": "sp1qqtrqglu5g8kh6mfsg4qxa9wq0nv9cauwfwxw70984wkqnw2uwz0w2qnehen8a7wuhwk9tgrzjh8gwzc8q2dlekedec5djk0js9d3d7qhnq6lqj3s", + }, ] LABEL_TEST_VECTORS = { "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c", - "labels": [ - 2, - 3, - 1001337 - ], + "labels": [2, 3, 1001337], "addresses": [ "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjex54dmqmmv6rw353tsuqhs99ydvadxzrsy9nuvk74epvee55drs734pqq", "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqsg59z2rppn4qlkx0yz9sdltmjv3j8zgcqadjn4ug98m3t6plujsq9qvu5n", - "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5" - ] + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5", + ], } class BIP352Test(TestCase): def test_generate_silent_payment_address(self): - """ Should generate the expected silent payment address """ + """Should generate the expected silent payment address""" for test_vector in BASIC_TEST_VECTORS: spend_priv_key = PrivateKey(unhexlify(test_vector["spend_priv_key"])) scan_priv_key = PrivateKey(unhexlify(test_vector["scan_priv_key"])) - sp_address = bip352.generate_silent_payment_address(scan_priv_key.get_public_key(), spend_priv_key.get_public_key()) + sp_address = bip352.generate_silent_payment_address( + scan_priv_key.get_public_key(), spend_priv_key.get_public_key() + ) assert sp_address == test_vector["sp_address"] - def test_generate_silent_payment_address_for_network(self): - """ Test network silent payment addrs should start with "tsp" """ + """Test network silent payment addrs should start with "tsp" """ test_networks = [k for k in NETWORKS.keys() if k != "main"] - scan_pubkey = PrivateKey(unhexlify(BASIC_TEST_VECTORS[0]["spend_priv_key"])).get_public_key() - spend_pubkey = PrivateKey(unhexlify(BASIC_TEST_VECTORS[0]["scan_priv_key"])).get_public_key() + scan_pubkey = PrivateKey( + unhexlify(BASIC_TEST_VECTORS[0]["spend_priv_key"]) + ).get_public_key() + spend_pubkey = PrivateKey( + unhexlify(BASIC_TEST_VECTORS[0]["scan_priv_key"]) + ).get_public_key() for network in test_networks: - payment_addr = bip352.generate_silent_payment_address(scan_pubkey, spend_pubkey, network=network) + payment_addr = bip352.generate_silent_payment_address( + scan_pubkey, spend_pubkey, network=network + ) assert payment_addr.startswith("tsp") - def test_generate_labeled_silent_payment_address(self): - """ Should generate the expected labeled silent payment addresses """ + """Should generate the expected labeled silent payment addresses""" spend_priv_key = PrivateKey(unhexlify(LABEL_TEST_VECTORS["spend_priv_key"])) scan_priv_key = PrivateKey(unhexlify(LABEL_TEST_VECTORS["scan_priv_key"])) - for label, address in zip(LABEL_TEST_VECTORS["labels"], LABEL_TEST_VECTORS["addresses"]): - sp_address = bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label) + for label, address in zip( + LABEL_TEST_VECTORS["labels"], LABEL_TEST_VECTORS["addresses"] + ): + sp_address = bip352.generate_labeled_silent_payment_address( + scan_priv_key, spend_priv_key.get_public_key(), label + ) assert sp_address == address # Label may also be a string, but the bip does not provide any test vectors - bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label="tenant 6102") + bip352.generate_labeled_silent_payment_address( + scan_priv_key, spend_priv_key.get_public_key(), label="tenant 6102" + ) # Label may also be passed in as bytes - bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label="I am bytes".encode()) + bip352.generate_labeled_silent_payment_address( + scan_priv_key, spend_priv_key.get_public_key(), label="I am bytes".encode() + ) with pytest.raises(Exception): # Label is required - bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key()) - + bip352.generate_labeled_silent_payment_address( + scan_priv_key, spend_priv_key.get_public_key() + ) + with pytest.raises(Exception): # Label must be an int, str, or bytes - bip352.generate_labeled_silent_payment_address(scan_priv_key, spend_priv_key.get_public_key(), label=1.0) + bip352.generate_labeled_silent_payment_address( + scan_priv_key, spend_priv_key.get_public_key(), label=1.0 + ) + + def test_decode_silent_payment_address(self): + """Should decode the silent payment address and return the expected keys""" + for test_vector in BASIC_TEST_VECTORS: + scan_priv_key = PrivateKey(unhexlify(test_vector["scan_priv_key"])) + spend_priv_key = PrivateKey(unhexlify(test_vector["spend_priv_key"])) + B_scan, B_spend = bip352.decode_silent_payment_address( + test_vector["sp_address"] + ) + + assert B_scan == scan_priv_key.get_public_key() + assert B_spend == spend_priv_key.get_public_key() + + with pytest.raises(ValueError): + # Invalid HRP + bip352.decode_silent_payment_address( + "st1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ) + + with pytest.raises(ValueError): + # Invalid encoding + bip352.decode_silent_payment_address( + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwvm" + ) From bfc9d7e7e4ee18267de8ba71b5c7119ab64d5e3f Mon Sep 17 00:00:00 2001 From: notTanveer Date: Sat, 12 Jul 2025 20:53:47 +0530 Subject: [PATCH 4/7] implement sender side protocol --- src/embit/bip352.py | 100 +- src/embit/script.py | 6 + src/embit/transaction.py | 177 ++ src/embit/util/key.py | 2 + .../data/send_and_receive_test_vectors.json | 2760 +++++++++++++++++ tests/tests/test_bip352.py | 74 + 6 files changed, 3115 insertions(+), 4 deletions(-) create mode 100644 tests/tests/data/send_and_receive_test_vectors.json diff --git a/src/embit/bip352.py b/src/embit/bip352.py index bff3eaa..dc0e195 100644 --- a/src/embit/bip352.py +++ b/src/embit/bip352.py @@ -3,15 +3,26 @@ see: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki TODO: -* Implement deriving a destination addr for a given output and recipient SP address. -* Implement check to determine if a given output is an SP output for a given SP address. * Implement signing SP spends (once psbt format is settled). """ from embit import bech32, ec from embit.util import secp256k1 from embit.hashes import tagged_hash -from typing import Tuple -from embit.util.key import ECPubKey +from typing import Tuple, List, Dict +from embit.util.key import SECP256K1_ORDER +from embit.transaction import COutPoint +from embit.util.secp256k1 import ( + ec_pubkey_create, + ec_pubkey_serialize, + ec_pubkey_parse, + ec_pubkey_tweak_mul, + ec_pubkey_tweak_add, + ec_seckey_verify, + ec_privkey_negate, + ec_pubkey_serialize, +) +from embit.script import p2tr +from binascii import hexlify, unhexlify def generate_silent_payment_address( @@ -57,6 +68,7 @@ def generate_labeled_silent_payment_address( ) +# TODO: use the bech32 decode function once the flexible bech32 PR is in def decode_silent_payment_address(address: str) -> Tuple[ec.PublicKey, ec.PublicKey]: """ Decode a silent payment address and return the scan and spend public keys. @@ -116,3 +128,83 @@ def decode_silent_payment_address(address: str) -> Tuple[ec.PublicKey, ec.Public raise ValueError(f"Invalid silent payment address: invalid public keys - {e}") return B_scan, B_spend + + +def get_input_hash(outpoints: List[COutPoint], sum_pubkey_bytes: bytes) -> bytes: + lowest_outpoint = sorted(outpoints, key=lambda o: o.serialize())[0] + preimage = lowest_outpoint.serialize() + sum_pubkey_bytes + return tagged_hash("BIP0352/Inputs", preimage) + + +def create_outputs( + input_privkeys: List[Tuple[bytes, bool]], + outpoints: List[COutPoint], + recipients: List[str], +) -> List[str]: + if not input_privkeys: + return [] + + signing_keys = [] + for sec, is_xonly in input_privkeys: + if not ec_seckey_verify(sec): + raise ValueError("Invalid private key") + + if is_xonly: + pub = ec_pubkey_create(sec) + ser = ec_pubkey_serialize(pub) + if ser[0] == 0x03: + sec = ec_privkey_negate(sec) + signing_keys.append(int.from_bytes(sec, "big")) + + a_sum = sum(signing_keys) % SECP256K1_ORDER + if a_sum == 0: + return [] + + a_sum_bytes = a_sum.to_bytes(32, "big") + A = ec_pubkey_create(a_sum_bytes) + + input_hash = get_input_hash(outpoints, ec_pubkey_serialize(A)) + + groups: Dict[ec.PublicKey, List[ec.PublicKey]] = {} + for addr in recipients: + B_scan, B_spend = decode_silent_payment_address(addr) + groups.setdefault(B_scan, []).append(B_spend) + + outputs: List[str] = [] + scalar = (int.from_bytes(input_hash, "big") * a_sum) % SECP256K1_ORDER + scalar_bytes = scalar.to_bytes(32, "big") + + for B_scan, B_spend_list in groups.items(): + ecdh_point = ec_pubkey_parse(B_scan.sec()) + ec_pubkey_tweak_mul(ecdh_point, scalar_bytes) + xonly_shared_secret = ec_pubkey_serialize(ecdh_point) + + k = 0 + for B_spend in B_spend_list: + t_k = tagged_hash( + "BIP0352/SharedSecret", + xonly_shared_secret + k.to_bytes(4, "big"), + ) + + P_k = ec_pubkey_parse(B_spend.sec()) + ec_pubkey_tweak_add(P_k, t_k) + + xonly = ec_pubkey_serialize(P_k)[1:33] + outputs.append(hexlify(xonly).decode()) + k += 1 + + return list(set(outputs)) + + +def generate_sp_destination_address( + input_privkeys: List[Tuple[bytes, bool]], + outpoints: List[COutPoint], + recipient_sp_address: str, +) -> str: + outputs = create_outputs(input_privkeys, outpoints, [recipient_sp_address]) + + dest_addr = [] + for output in outputs: + pubkey = ec.PublicKey.parse(b"\x02" + unhexlify(output)) + dest_addr.append(p2tr(pubkey).address()) + return dest_addr diff --git a/src/embit/script.py b/src/embit/script.py index 5cea7f9..f638738 100644 --- a/src/embit/script.py +++ b/src/embit/script.py @@ -60,6 +60,12 @@ def script_type(self): # unknown type return None + def is_p2tr(self): + """ + Check if the script is a Pay-to-Taproot script. + """ + return self.script_type() == "p2tr" + def write_to(self, stream): res = stream.write(compact.to_bytes(len(self.data))) res += stream.write(self.data) diff --git a/src/embit/transaction.py b/src/embit/transaction.py index 6eec9b8..f1afc60 100644 --- a/src/embit/transaction.py +++ b/src/embit/transaction.py @@ -4,6 +4,183 @@ from .base import EmbitBase, EmbitError from .script import Script, Witness from .misc import const +from embit.util.key import ECKey, ECPubKey, NUMS_H +from embit.hashes import hash160 +from io import BytesIO +import struct +from binascii import unhexlify + + +def from_hex(hex_string): + """Deserialize from a hex string representation (e.g. from RPC)""" + return BytesIO(unhexlify(hex_string)) + + +def deser_txid(txid: str): + # recall that txids are serialized little-endian, but displayed big-endian + # this means when converting from a human readable hex txid, we need to first + # reverse it before deserializing it + dixt = "".join(map(str.__add__, txid[-2::-2], txid[-1::-2])) + return unhexlify(dixt) + + +def deser_compact_size(f: BytesIO): + view = f.getbuffer() + nbytes = view.nbytes + view.release() + if nbytes == 0: + return 0 # end of stream + + nit = struct.unpack(" ECPubKey: + prevout_script = Script(vin.prevout) + script_type = prevout_script.script_type() + witness_stack = vin.txinwitness.scriptWitness.stack if vin.txinwitness else [] + + if script_type == "p2pkh": + spk_hash = vin.prevout[3:23] # Extract hash from raw bytes + for i in range(len(vin.scriptSig), 32, -1): + if i >= 33: + pubkey_bytes = vin.scriptSig[i - 33 : i] + if hash160(pubkey_bytes) == spk_hash: + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid and pubkey.is_compressed: + return pubkey + + elif script_type == "p2sh": + if len(vin.scriptSig) > 1 and witness_stack: + pubkey_bytes = witness_stack[-1] + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid and pubkey.is_compressed: + return pubkey + + elif script_type == "p2wpkh" and witness_stack: + pubkey_bytes = witness_stack[-1] + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid and pubkey.is_compressed: + return pubkey + + elif script_type == "p2tr": + if witness_stack: + if len(witness_stack) > 1 and witness_stack[-1][:1] == b"\x50": + witness_stack = witness_stack[:-1] # Remove annex + + if len(witness_stack) > 1: # Script-path spend + control_block = witness_stack[-1] + if len(control_block) >= 33 and control_block[1:33] == NUMS_H.to_bytes( + 32, "big" + ): + return ECPubKey() + + # Key-path spend + if len(vin.prevout) >= 34: + pubkey_bytes = b"\x02" + vin.prevout[2:] + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid: + return pubkey + + return ECPubKey() class TransactionError(EmbitError): diff --git a/src/embit/util/key.py b/src/embit/util/key.py index 13b01d9..e5e7021 100644 --- a/src/embit/util/key.py +++ b/src/embit/util/key.py @@ -253,6 +253,7 @@ def mul(self, ps): ) SECP256K1_ORDER = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 SECP256K1_ORDER_HALF = SECP256K1_ORDER // 2 +NUMS_H = 0x50929B74C1A04954B78B4B6035E97A5E078A5A0F28EC96D547BFEE9ACE803AC0 class ECPubKey: @@ -289,6 +290,7 @@ def set(self, data): self.valid = False else: self.valid = False + return self @property def is_compressed(self): diff --git a/tests/tests/data/send_and_receive_test_vectors.json b/tests/tests/data/send_and_receive_test_vectors.json new file mode 100644 index 0000000..264f7be --- /dev/null +++ b/tests/tests/data/send_and_receive_test_vectors.json @@ -0,0 +1,2760 @@ +[ + { + "comment": "Simple send: two inputs", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + }, + "private_key": "93f5ed907ad5b2bdbbdcb5d9116ebc0a4e1f92f910d5260237fa45a9408aad16" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "3e9fce73d4e77a4809908e3c3a2e54ee147b9312dc5044a193d1fc85de46e3c1" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + } + } + ], + "outputs": [ + "3e9fce73d4e77a4809908e3c3a2e54ee147b9312dc5044a193d1fc85de46e3c1" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "f438b40179a3c4262de12986c0e6cce0634007cdc79c1dcd3e20b9ebc2e7eef6", + "pub_key": "3e9fce73d4e77a4809908e3c3a2e54ee147b9312dc5044a193d1fc85de46e3c1", + "signature": "74f85b856337fbe837643b86f462118159f93ac4acc2671522f27e8f67b079959195ccc7a5dbee396d2909f5d680d6e30cda7359aa2755822509b70d6b0687a1" + } + ] + } + } + ] + }, + { + "comment": "Simple send: two inputs, order reversed", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + }, + "private_key": "93f5ed907ad5b2bdbbdcb5d9116ebc0a4e1f92f910d5260237fa45a9408aad16" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "3e9fce73d4e77a4809908e3c3a2e54ee147b9312dc5044a193d1fc85de46e3c1" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + } + } + ], + "outputs": [ + "3e9fce73d4e77a4809908e3c3a2e54ee147b9312dc5044a193d1fc85de46e3c1" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "f438b40179a3c4262de12986c0e6cce0634007cdc79c1dcd3e20b9ebc2e7eef6", + "pub_key": "3e9fce73d4e77a4809908e3c3a2e54ee147b9312dc5044a193d1fc85de46e3c1", + "signature": "74f85b856337fbe837643b86f462118159f93ac4acc2671522f27e8f67b079959195ccc7a5dbee396d2909f5d680d6e30cda7359aa2755822509b70d6b0687a1" + } + ] + } + } + ] + }, + { + "comment": "Simple send: two inputs from the same transaction", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 3, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 7, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + }, + "private_key": "93f5ed907ad5b2bdbbdcb5d9116ebc0a4e1f92f910d5260237fa45a9408aad16" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "79e71baa2ba3fc66396de3a04f168c7bf24d6870ec88ca877754790c1db357b6" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 3, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 7, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + } + } + ], + "outputs": [ + "79e71baa2ba3fc66396de3a04f168c7bf24d6870ec88ca877754790c1db357b6" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "4851455bfbe1ab4f80156570aa45063201aa5c9e1b1dcd29f0f8c33d10bf77ae", + "pub_key": "79e71baa2ba3fc66396de3a04f168c7bf24d6870ec88ca877754790c1db357b6", + "signature": "10332eea808b6a13f70059a8a73195808db782012907f5ba32b6eae66a2f66b4f65147e2b968a1678c5f73d57d5d195dbaf667b606ff80c8490eac1f3b710657" + } + ] + } + } + ] + }, + { + "comment": "Simple send: two inputs from the same transaction, order reversed", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 7, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 3, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + }, + "private_key": "93f5ed907ad5b2bdbbdcb5d9116ebc0a4e1f92f910d5260237fa45a9408aad16" + } + ], + "recipients": [ 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"48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + } + } + ], + "outputs": [ + "f4c2da807f89cb1501f1a77322a895acfb93c28e08ed2724d2beb8e44539ba38" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "ab0c9b87181bf527879f48db9f14a02233619b986f8e8f2d5d408ce68a709f51", + "pub_key": "f4c2da807f89cb1501f1a77322a895acfb93c28e08ed2724d2beb8e44539ba38", + "signature": "398a9790865791a9db41a8015afad3a47d60fec5086c50557806a49a1bc038808632b8fe679a7bb65fc6b455be994502eed849f1da3729cd948fc7be73d67295" + } + ] + } + } + ] + }, + { + "comment": "Outpoint ordering byte-lexicographically vs. vout-integer", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 1, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 256, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + }, + "private_key": "93f5ed907ad5b2bdbbdcb5d9116ebc0a4e1f92f910d5260237fa45a9408aad16" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "a85ef8701394b517a4b35217c4bd37ac01ebeed4b008f8d0879f9e09ba95319c" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 1, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 256, + "scriptSig": "48304602210086783ded73e961037e77d49d9deee4edc2b23136e9728d56e4491c80015c3a63022100fda4c0f21ea18de29edbce57f7134d613e044ee150a89e2e64700de2d4e83d4e2103bd85685d03d111699b15d046319febe77f8de5286e9e512703cdee1bf3be3792", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914d9317c66f54ff0a152ec50b1d19c25be50c8e15988ac" + } + } + } + ], + "outputs": [ + "a85ef8701394b517a4b35217c4bd37ac01ebeed4b008f8d0879f9e09ba95319c" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "c8ac0292997b5bca98b3ebd99a57e253071137550f270452cd3df8a3e2266d36", + "pub_key": "a85ef8701394b517a4b35217c4bd37ac01ebeed4b008f8d0879f9e09ba95319c", + "signature": "c036ee38bfe46aba03234339ae7219b31b824b52ef9d5ce05810a0d6f62330dedc2b55652578aa5bdabf930fae941acd839d5a66f8fce7caa9710ccb446bddd1" + } + ] + } + } + ] + }, + { + "comment": "Single recipient: multiple UTXOs from the same public key", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": 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"548ae55c8eec1e736e8d3e520f011f1f42a56d166116ad210b3937599f87f566", + "signature": "f238386c5d5e5444f8d2c75aabbcb28c346f208c76f60823f5de3b67b79e0ec72ea5de2d7caec314e0971d3454f122dda342b3eede01b3857e83654e36b25f76" + } + ] + } + } + ] + }, + { + "comment": "Single recipient: taproot only inputs with even y-values", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "", + "txinwitness": "0140c459b671370d12cfb5acee76da7e3ba7cc29b0b4653e3af8388591082660137d087fdc8e89a612cd5d15be0febe61fc7cdcf3161a26e599a4514aa5c3e86f47b", + "prevout": { + "scriptPubKey": { + "hex": "51205a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "", + "txinwitness": 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"3fb9ce5ce1746ced103c8ed254e81f6690764637ddbc876ec1f9b3ddab776b03", + "pub_key": "de88bea8e7ffc9ce1af30d1132f910323c505185aec8eae361670421e749a1fb", + "signature": "c5acd25a8f021a4192f93bc34403fd8b76484613466336fb259c72d04c169824f2690ca34e96cee86b69f376c8377003268fda56feeb1b873e5783d7e19bcca5" + } + ] + } + } + ] + }, + { + "comment": "Single recipient: taproot only with mixed even/odd y-values", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "", + "txinwitness": "0140c459b671370d12cfb5acee76da7e3ba7cc29b0b4653e3af8388591082660137d087fdc8e89a612cd5d15be0febe61fc7cdcf3161a26e599a4514aa5c3e86f47b", + "prevout": { + "scriptPubKey": { + "hex": "51205a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": 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"addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "f5382508609771068ed079b24e1f72e4a17ee6d1c979066bf1d4e2a5676f09d4", + "pub_key": "77cab7dd12b10259ee82c6ea4b509774e33e7078e7138f568092241bf26b99f1", + "signature": "ff65833b8fd1ed3ef9d0443b4f702b45a3f2dd457ba247687e8207745c3be9d2bdad0ab3f07118f8b2efc6a04b95f7b3e218daf8a64137ec91bd2fc67fc137a5" + } + ] + } + } + ] + }, + { + "comment": "Single recipient: taproot input with even y-value and non-taproot input", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "", + "txinwitness": "0140c459b671370d12cfb5acee76da7e3ba7cc29b0b4653e3af8388591082660137d087fdc8e89a612cd5d15be0febe61fc7cdcf3161a26e599a4514aa5c3e86f47b", + "prevout": { + "scriptPubKey": { + "hex": 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"f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "d97e442d110c0bdd31161a7bb6e7862e038d02a09b1484dfbb463f2e0f7c9230", + "pub_key": "e976a58fbd38aeb4e6093d4df02e9c1de0c4513ae0c588cef68cda5b2f8834ca", + "signature": "29bd25d0f808d7fcd2aa6d5ed206053899198397506c301b218a9e47a3d7070af03e903ff718978d50d1b6b9af8cc0e313d84eda5d5b1e8e85e5516d630bbeb9" + }, + { + "priv_key_tweak": "33ce085c3c11eaad13694aae3c20301a6c83382ec89a7cde96c6799e2f88805a", + "pub_key": "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac", + "signature": "335667ca6cae7a26438f5cfdd73b3d48fa832fa9768521d7d5445f22c203ab0d74ed85088f27d29959ba627a4509996676f47df8ff284d292567b1beef0e3912" + } + ] + } + } + ] + }, + { + "comment": "Multiple outputs: multiple outputs, multiple recipients", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", + "sp1qqgrz6j0lcqnc04vxccydl0kpsj4frfje0ktmgcl2t346hkw30226xqupawdf48k8882j0strrvcmgg2kdawz53a54dd376ngdhak364hzcmynqtn", + "sp1qqgrz6j0lcqnc04vxccydl0kpsj4frfje0ktmgcl2t346hkw30226xqupawdf48k8882j0strrvcmgg2kdawz53a54dd376ngdhak364hzcmynqtn" + ] + }, + "expected": { + "outputs": [ + [ + "2e847bb01d1b491da512ddd760b8509617ee38057003d6115d00ba562451323a", + "841792c33c9dc6193e76744134125d40add8f2f4a96475f28ba150be032d64e8", + "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + } + } + ], + "outputs": [ + "2e847bb01d1b491da512ddd760b8509617ee38057003d6115d00ba562451323a", + "841792c33c9dc6193e76744134125d40add8f2f4a96475f28ba150be032d64e8", + "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac" + ], + "key_material": { + "spend_priv_key": "9902c3c56e84002a7cd410113a9ab21d142be7f53cf5200720bb01314c5eb920", + "scan_priv_key": "060b751d7892149006ed7b98606955a29fe284a1e900070c0971f5fb93dbf422" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgrz6j0lcqnc04vxccydl0kpsj4frfje0ktmgcl2t346hkw30226xqupawdf48k8882j0strrvcmgg2kdawz53a54dd376ngdhak364hzcmynqtn" + ], + "outputs": [ + { + "priv_key_tweak": "72cd082cccb633bf85240a83494b32dc943a4d05647a6686d23ad4ca59c0ebe4", + "pub_key": "2e847bb01d1b491da512ddd760b8509617ee38057003d6115d00ba562451323a", + "signature": "38745f3d9f5eef0b1cfb17ca314efa8c521efab28a23aa20ec5e3abb561d42804d539906dce60c4ee7977966184e6f2cab1faa0e5377ceb7148ec5218b4e7878" + }, + { + "priv_key_tweak": "2f17ea873a0047fc01ba8010fef0969e76d0e4283f600d48f735098b1fee6eb9", + "pub_key": "841792c33c9dc6193e76744134125d40add8f2f4a96475f28ba150be032d64e8", + "signature": "c26f4e3cf371b90b840f48ea0e761b5ec31883ed55719f9ef06a90e282d85f565790ab780a3f491bc2668cc64e944dca849d1022a878cdadb8d168b8da4a6da3" + } + ] + } + } + ] + }, + { + "comment": "Receiving with labels: label with even parity", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": 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"given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + } + } + ], + "outputs": [ + "d014d4860f67d607d60b1af70e0ee236b99658b61bb769832acbbe87c374439a" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [ + 2, + 3, + 1001337 + ] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjex54dmqmmv6rw353tsuqhs99ydvadxzrsy9nuvk74epvee55drs734pqq", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqsg59z2rppn4qlkx0yz9sdltmjv3j8zgcqadjn4ug98m3t6plujsq9qvu5n", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5" + ], + "outputs": [ + { + "priv_key_tweak": "51d4e9d0d482b5700109b4b2e16ff508269b03d800192a043d61dca4a0a72a52", + "pub_key": "d014d4860f67d607d60b1af70e0ee236b99658b61bb769832acbbe87c374439a", + "signature": "c30fa63bad6f0a317f39a773a5cbf0b0f8193c71dfebba05ee6ae4ed28e3775e6e04c3ea70a83703bb888122855dc894cab61692e7fd10c9b3494d479a60785e" + } + ] + } + } + ] + }, + { + "comment": "Receiving with labels: label with odd parity", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": 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"9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [ + 2, + 3, + 1001337 + ] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjex54dmqmmv6rw353tsuqhs99ydvadxzrsy9nuvk74epvee55drs734pqq", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqsg59z2rppn4qlkx0yz9sdltmjv3j8zgcqadjn4ug98m3t6plujsq9qvu5n", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5" + ], + "outputs": [ + { + "priv_key_tweak": "6024ae214876356b8d917716e7707d267ae16a0fdb07de2a786b74a7bbcddead", + "pub_key": "67626aebb3c4307cf0f6c39ca23247598fabf675ab783292eb2f81ae75ad1f8c", + "signature": "a86d554d0d6b7aa0907155f7e0b47f0182752472fffaeddd68da90e99b9402f166fd9b33039c302c7115098d971c1399e67c19e9e4de180b10ea0b9d6f0db832" + } + ] + } + } + ] + }, + { + "comment": "Receiving with labels: large label integer", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5" + ] + }, + "expected": { + "outputs": [ + [ + "7efa60ce78ac343df8a013a2027c6c5ef29f9502edcbd769d2c21717fecc5951" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + } + } + ], + "outputs": [ + "7efa60ce78ac343df8a013a2027c6c5ef29f9502edcbd769d2c21717fecc5951" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [ + 2, + 3, + 1001337 + ] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjex54dmqmmv6rw353tsuqhs99ydvadxzrsy9nuvk74epvee55drs734pqq", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqsg59z2rppn4qlkx0yz9sdltmjv3j8zgcqadjn4ug98m3t6plujsq9qvu5n", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgq7c2zfthc6x3a5yecwc52nxa0kfd20xuz08zyrjpfw4l2j257yq6qgnkdh5" + ], + "outputs": [ + { + "priv_key_tweak": "e336b92330c33030285ce42e4115ad92d5197913c88e06b9072b4a9b47c664a2", + "pub_key": "7efa60ce78ac343df8a013a2027c6c5ef29f9502edcbd769d2c21717fecc5951", + "signature": "c9e80dd3bdd25ca2d352ce77510f1aed37ba3509dc8cc0677f2d7c2dd04090707950ce9dd6c83d2a428063063aff5c04f1744e334f661f2fc01b4ef80b50f739" + } + ] + } + } + ] + }, + { + "comment": "Multiple outputs with labels: un-labeled and labeled address; same recipient", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqaxww2fnhrx05cghth75n0qcj59e3e2anscr0q9wyknjxtxycg07y3pevyj", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "39f42624d5c32a77fda80ff0acee269afec601d3791803e80252ae04e4ffcf4c", + "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac" + ], + [ + "83dc944e61603137294829aed56c74c9b087d80f2c021b98a7fae5799000696c", + "e976a58fbd38aeb4e6093d4df02e9c1de0c4513ae0c588cef68cda5b2f8834ca" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + } + } + ], + "outputs": [ + "39f42624d5c32a77fda80ff0acee269afec601d3791803e80252ae04e4ffcf4c", + "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [ + 1 + ] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqaxww2fnhrx05cghth75n0qcj59e3e2anscr0q9wyknjxtxycg07y3pevyj" + ], + "outputs": [ + { + "priv_key_tweak": "43100f89f1a6bf10081c92b473ffc57ceac7dbed600b6aba9bb3976f17dbb914", + "pub_key": "39f42624d5c32a77fda80ff0acee269afec601d3791803e80252ae04e4ffcf4c", + "signature": "15c92509b67a6c211ebb4a51b7528d0666e6720de2343b2e92cfb97942ca14693c1f1fdc8451acfdb2644039f8f5c76114807fdc3d3a002d8a46afab6756bd75" + }, + { + "priv_key_tweak": "33ce085c3c11eaad13694aae3c20301a6c83382ec89a7cde96c6799e2f88805a", + "pub_key": "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac", + "signature": "335667ca6cae7a26438f5cfdd73b3d48fa832fa9768521d7d5445f22c203ab0d74ed85088f27d29959ba627a4509996676f47df8ff284d292567b1beef0e3912" + } + ] + } + } + ] + }, + { + "comment": "Multiple outputs with labels: multiple outputs for labeled address; same recipient", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqaxww2fnhrx05cghth75n0qcj59e3e2anscr0q9wyknjxtxycg07y3pevyj", + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqaxww2fnhrx05cghth75n0qcj59e3e2anscr0q9wyknjxtxycg07y3pevyj" + ] + }, + "expected": { + "outputs": [ + [ + "39f42624d5c32a77fda80ff0acee269afec601d3791803e80252ae04e4ffcf4c", + "83dc944e61603137294829aed56c74c9b087d80f2c021b98a7fae5799000696c" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + } + } + ], + "outputs": [ + "39f42624d5c32a77fda80ff0acee269afec601d3791803e80252ae04e4ffcf4c", + "83dc944e61603137294829aed56c74c9b087d80f2c021b98a7fae5799000696c" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [ + 1 + ] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv", + 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"sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "33ce085c3c11eaad13694aae3c20301a6c83382ec89a7cde96c6799e2f88805a", + "pub_key": "f207162b1a7abc51c42017bef055e9ec1efc3d3567cb720357e2b84325db33ac", + "signature": "335667ca6cae7a26438f5cfdd73b3d48fa832fa9768521d7d5445f22c203ab0d74ed85088f27d29959ba627a4509996676f47df8ff284d292567b1beef0e3912" + } + ] + } + } + ] + }, + { + "comment": "Single recipient: taproot input with NUMS point", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "", + "txinwitness": "0440c459b671370d12cfb5acee76da7e3ba7cc29b0b4653e3af8388591082660137d087fdc8e89a612cd5d15be0febe61fc7cdcf3161a26e599a4514aa5c3e86f47b22205a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5ac21c150929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac00150", + "prevout": { + "scriptPubKey": { + "hex": "5120da6f0595ecb302bbe73e2f221f05ab10f336b06817d36fd28fc6691725ddaa85" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "", + "txinwitness": "0140bd1e708f92dbeaf24a6b8dd22e59c6274355424d62baea976b449e220fd75b13578e262ab11b7aa58e037f0c6b0519b66803b7d9decaa1906dedebfb531c56c1", + "prevout": { + "scriptPubKey": { + "hex": "5120782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338" + } + }, + "private_key": "fc8716a97a48ba9a05a98ae47b5cd201a25a7fd5d8b73c203c5f7b6b6b3b6ad7" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 1, + "scriptSig": "", + "txinwitness": "0340268d31a9276f6380107d5321cafa6d9e8e5ea39204318fdc8206b31507c891c3bbcea3c99e2208d73bd127a8e8c5f1e45a54f1bd217205414ddb566ab7eda0092220e0ec4f64b3fa2e463ccfcf4e856e37d5e1e20275bc89ec1def9eb098eff1f85dac21c150929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac0", + "prevout": { + "scriptPubKey": { + "hex": "51200a3c9365ceb131f89b0a4feb6896ebd67bb15a98c31eaa3da143bb955a0f3fcb" + } + }, + "private_key": "8d4751f6e8a3586880fb66c19ae277969bd5aa06f61c4ee2f1e2486efdf666d3" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "79e79897c52935bfd97fc6e076a6431a0c7543ca8c31e0fc3cf719bb572c842d" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "", + "txinwitness": "0440c459b671370d12cfb5acee76da7e3ba7cc29b0b4653e3af8388591082660137d087fdc8e89a612cd5d15be0febe61fc7cdcf3161a26e599a4514aa5c3e86f47b22205a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5ac21c150929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac00150", + "prevout": { + "scriptPubKey": { + "hex": "5120da6f0595ecb302bbe73e2f221f05ab10f336b06817d36fd28fc6691725ddaa85" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "", + "txinwitness": "0140bd1e708f92dbeaf24a6b8dd22e59c6274355424d62baea976b449e220fd75b13578e262ab11b7aa58e037f0c6b0519b66803b7d9decaa1906dedebfb531c56c1", + "prevout": { + "scriptPubKey": { + "hex": "5120782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 1, + "scriptSig": "", + "txinwitness": "0340268d31a9276f6380107d5321cafa6d9e8e5ea39204318fdc8206b31507c891c3bbcea3c99e2208d73bd127a8e8c5f1e45a54f1bd217205414ddb566ab7eda0092220e0ec4f64b3fa2e463ccfcf4e856e37d5e1e20275bc89ec1def9eb098eff1f85dac21c150929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac0", + "prevout": { + "scriptPubKey": { + "hex": "51200a3c9365ceb131f89b0a4feb6896ebd67bb15a98c31eaa3da143bb955a0f3fcb" + } + } + } + ], + "outputs": [ + "79e79897c52935bfd97fc6e076a6431a0c7543ca8c31e0fc3cf719bb572c842d" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "3ddec3232609d348d6b8b53123b4f40f6d4f5398ca586f087b0416ec3b851496", + "pub_key": "79e79897c52935bfd97fc6e076a6431a0c7543ca8c31e0fc3cf719bb572c842d", + "signature": "d7d06e3afb68363031e4eb18035c46ceae41bdbebe7888a4754bc9848c596436869aeaecff0527649a1f458b71c9ceecec10b535c09d01d720229aa228547706" + } + ] + } + } + ] + }, + { + "comment": "Pubkey extraction from malleated p2pkh", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 1, + "scriptSig": "0075473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 2, + "scriptSig": "5163473045022100e7d26e77290b37128f5215ade25b9b908ce87cc9a4d498908b5bb8fd6daa1b8d022002568c3a8226f4f0436510283052bfb780b76f3fe4aa60c4c5eb118e43b187372102e0ec4f64b3fa2e463ccfcf4e856e37d5e1e20275bc89ec1def9eb098eff1f85d67483046022100c0d3c851d3bd562ae93d56bcefd735ea57c027af46145a4d5e9cac113bfeb0c2022100ee5b2239af199fa9b7aa1d98da83a29d0a2cf1e4f29e2f37134ce386d51c544c2102ad0f26ddc7b3fcc340155963b3051b85289c1869612ecb290184ac952e2864ec68", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914c82c5ec473cbc6c86e5ef410e36f9495adcf979988ac" + } + }, + "private_key": "72b8ae09175ca7977f04993e651d88681ed932dfb92c5158cdf0161dd23fda6e" + } + ], + "recipients": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ] + }, + "expected": { + "outputs": [ + [ + "4612cdbf845c66c7511d70aab4d9aed11e49e48cdb8d799d787101cdd0d53e4f" + ] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + } + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 1, + "scriptSig": "0075473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b972103782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9147cdd63cc408564188e8e472640e921c7c90e651d88ac" + } + } + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 2, 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"sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [ + { + "priv_key_tweak": "10bde9781def20d7701e7603ef1b1e5e71c67bae7154818814e3c81ef5b1a3d3", + "pub_key": "4612cdbf845c66c7511d70aab4d9aed11e49e48cdb8d799d787101cdd0d53e4f", + "signature": "6137969f810e9e8ef6c9755010e808f5dd1aed705882e44d7f0ae64eb0c509ec8b62a0671bee0d5914ac27d2c463443e28e999d82dc3d3a4919f093872d947bb" + } + ] + } + } + ] + }, + { + "comment": "P2PKH and P2WPKH Uncompressed Keys are skipped", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a91419c2f3ae0ca3b642bd3e49598b8da89f50c1416188ac" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b974104782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c3799373233387c5343bf58e23269e903335b958a12182f9849297321e8d710e49a8727129cab", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9144b92ac4ac6fe6212393894addda332f2e47a315688ac" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 1, + "scriptSig": "", + "txinwitness": 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"67fee277da9e8542b5d2e6f32d660a9bbd3f0e107c2d53638ab1d869088882d6", + "signature": "72e7ad573ac23255d4651d5b0326a200496588acb7a4894b22092236d5eda6a0a9a4d8429b022c2219081fefce5b33795cae488d10f5ea9438849ed8353624f2" + } + ] + } + } + ] + }, + { + "comment": "Skip invalid P2SH inputs", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "16001419c2f3ae0ca3b642bd3e49598b8da89f50c14161", + "txinwitness": "02483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "prevout": { + "scriptPubKey": { + "hex": "a9148629db5007d5fcfbdbb466637af09daf9125969387" + } + }, + "private_key": "eadc78165ff1f8ea94ad7cfdc54990738a4c53f6e0507b42154201b8e5dff3b1" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 1, + "scriptSig": "1600144b92ac4ac6fe6212393894addda332f2e47a3156", + "txinwitness": "02473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b974104782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c3799373233387c5343bf58e23269e903335b958a12182f9849297321e8d710e49a8727129cab", + "prevout": { + "scriptPubKey": { + "hex": "a9146c9bf136fbb7305fd99d771a95127fcf87dedd0d87" + } + }, + "private_key": "0378e95685b74565fa56751b84a32dfd18545d10d691641b8372e32164fad66a" + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 2, + "scriptSig": 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], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "16001419c2f3ae0ca3b642bd3e49598b8da89f50c14161", + "txinwitness": "02483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d621025a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5", + "prevout": { + "scriptPubKey": { + "hex": "a9148629db5007d5fcfbdbb466637af09daf9125969387" + } + } + }, + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 1, + "scriptSig": "1600144b92ac4ac6fe6212393894addda332f2e47a3156", + "txinwitness": 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"vin": [ + { + "txid": "f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16", + "vout": 0, + "scriptSig": "483046022100ad79e6801dd9a8727f342f31c71c4912866f59dc6e7981878e92c5844a0ce929022100fb0d2393e813968648b9753b7e9871d90ab3d815ebf91820d704b19f4ed224d641045a1e61f898173040e20616d43e9f496fba90338a39faa1ed98fcbaeee4dd9be5c61836c9b1688ba431f7ea3039742251f62f0dca3da1bee58a47fa9b456c2d52", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a914460e8b41545d2dbe7e0671f0f573e2232814260a88ac" + } + } + }, + { + "txid": "a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d", + "vout": 0, + "scriptSig": "473045022100a8c61b2d470e393279d1ba54f254b7c237de299580b7fa01ffcc940442ecec4502201afba952f4e4661c40acde7acc0341589031ba103a307b886eb867b23b850b974104782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c3799373233387c5343bf58e23269e903335b958a12182f9849297321e8d710e49a8727129cab", + "txinwitness": "", + "prevout": { + "scriptPubKey": { + "hex": "76a9144b92ac4ac6fe6212393894addda332f2e47a315688ac" + } + } + } + ], + "outputs": [ + "782eeb913431ca6e9b8c2fd80a5f72ed2024ef72a3c6fb10263c379937323338", + "e0ec4f64b3fa2e463ccfcf4e856e37d5e1e20275bc89ec1def9eb098eff1f85d" + ], + "key_material": { + "spend_priv_key": "9d6ad855ce3417ef84e836892e5a56392bfba05fa5d97ccea30e266f540e08b3", + "scan_priv_key": "0f694e068028a717f8af6b9411f9a133dd3565258714cc226594b34db90c1f2c" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwv" + ], + "outputs": [] + } + } + ] + }, + { + "comment": "Input keys sum up to zero / point at infinity: sending fails, receiver skips tx", + "sending": [ + { + "given": { + "vin": [ + { + "txid": "3a286147b25e16ae80aff406f2673c6e565418c40f45c071245cdebc8a94174e", + "vout": 0, + "scriptSig": "", + "txinwitness": "024730440220085003179ce1a3a88ce0069aa6ea045e140761ab88c22a26ae2a8cfe983a6e4602204a8a39940f0735c8a4424270ac8da65240c261ab3fda9272f6d6efbf9cfea366012102557ef3e55b0a52489b4454c1169e06bdea43687a69c1f190eb50781644ab6975", + "prevout": { + "scriptPubKey": { + "hex": "00149d9e24f9fab4e35bf1a6df4b46cb533296ac0792" + } + }, + "private_key": "a6df6a0bb448992a301df4258e06a89fe7cf7146f59ac3bd5ff26083acb22ceb" + }, + { + "txid": "3a286147b25e16ae80aff406f2673c6e565418c40f45c071245cdebc8a94174e", + "vout": 1, + "scriptSig": "", + "txinwitness": "0247304402204586a68e1d97dd3c6928e3622799859f8c3b20c3c670cf654cc905c9be29fdb7022043fbcde1689f3f4045e8816caf6163624bd19e62e4565bc99f95c533e599782c012103557ef3e55b0a52489b4454c1169e06bdea43687a69c1f190eb50781644ab6975", + "prevout": { + "scriptPubKey": { + "hex": "00149860538b5575962776ed0814ae222c7d60c72d7b" + } + }, + "private_key": "592095f44bb766d5cfe20bda71f9575ed2df6b9fb9addc7e5fdffe0923841456" + } + ], + "recipients": [ + "sp1qqtrqglu5g8kh6mfsg4qxa9wq0nv9cauwfwxw70984wkqnw2uwz0w2qnehen8a7wuhwk9tgrzjh8gwzc8q2dlekedec5djk0js9d3d7qhnq6lqj3s" + ] + }, + "expected": { + "outputs": [ + [] + ] + } + } + ], + "receiving": [ + { + "given": { + "vin": [ + { + "txid": "3a286147b25e16ae80aff406f2673c6e565418c40f45c071245cdebc8a94174e", + "vout": 0, + "scriptSig": "", + "txinwitness": "024730440220085003179ce1a3a88ce0069aa6ea045e140761ab88c22a26ae2a8cfe983a6e4602204a8a39940f0735c8a4424270ac8da65240c261ab3fda9272f6d6efbf9cfea366012102557ef3e55b0a52489b4454c1169e06bdea43687a69c1f190eb50781644ab6975", + "prevout": { + "scriptPubKey": { + "hex": "00149d9e24f9fab4e35bf1a6df4b46cb533296ac0792" + } + } + }, + { + "txid": "3a286147b25e16ae80aff406f2673c6e565418c40f45c071245cdebc8a94174e", + "vout": 1, + "scriptSig": "", + "txinwitness": "0247304402204586a68e1d97dd3c6928e3622799859f8c3b20c3c670cf654cc905c9be29fdb7022043fbcde1689f3f4045e8816caf6163624bd19e62e4565bc99f95c533e599782c012103557ef3e55b0a52489b4454c1169e06bdea43687a69c1f190eb50781644ab6975", + "prevout": { + "scriptPubKey": { + "hex": "00149860538b5575962776ed0814ae222c7d60c72d7b" + } + } + } + ], + "outputs": [ + "0000000000000000000000000000000000000000000000000000000000000000" + ], + "key_material": { + "spend_priv_key": "0000000000000000000000000000000000000000000000000000000000000001", + "scan_priv_key": "0000000000000000000000000000000000000000000000000000000000000002" + }, + "labels": [] + }, + "expected": { + "addresses": [ + "sp1qqtrqglu5g8kh6mfsg4qxa9wq0nv9cauwfwxw70984wkqnw2uwz0w2qnehen8a7wuhwk9tgrzjh8gwzc8q2dlekedec5djk0js9d3d7qhnq6lqj3s" + ], + "outputs": [] + } + } + ] + } +] diff --git a/tests/tests/test_bip352.py b/tests/tests/test_bip352.py index 7739f77..86c0c63 100644 --- a/tests/tests/test_bip352.py +++ b/tests/tests/test_bip352.py @@ -10,6 +10,17 @@ from embit import bip352 from embit.ec import PrivateKey from embit.networks import NETWORKS +import os +import json +from embit.transaction import ( + COutPoint, + VinInfo, + CTxInWitness, + deser_txid, + get_pubkey_from_input, + from_hex, +) +from embit.script import Script BASIC_TEST_VECTORS = [ @@ -122,3 +133,66 @@ def test_decode_silent_payment_address(self): bip352.decode_silent_payment_address( "sp1qqgste7k9hx0qftg6qmwlkqtwuy6cycyavzmzj85c6qdfhjdpdjtdgqjuexzk6murw56suy3e0rd2cgqvycxttddwsvgxe2usfpxumr70xc9pkqwvm" ) + + def test_create_silent_payments_outputs(self): + """Test silent payment output generation using test vectors""" + __location__ = os.path.realpath( + os.path.join(os.getcwd(), os.path.dirname(__file__)) + ) + with open( + os.path.join(__location__, "data/send_and_receive_test_vectors.json"), "r" + ) as f: + SEND_AND_RECEIVE_TEST_VECTORS = json.load(f) + + for case in SEND_AND_RECEIVE_TEST_VECTORS: + for sending_test in case["sending"]: + given = sending_test["given"] + expected = sending_test["expected"] + + vins = [ + VinInfo( + outpoint=COutPoint( + hash=deser_txid(input["txid"]), n=input["vout"] + ), + scriptSig=unhexlify(input["scriptSig"]), + txinwitness=CTxInWitness().deserialize( + from_hex(input["txinwitness"]) + ), + prevout=unhexlify(input["prevout"]["scriptPubKey"]["hex"]), + private_key=(unhexlify(input["private_key"])), + ) + for input in given["vin"] + ] + + input_priv_keys = [] + input_pub_keys = [] + for vin in vins: + pubkey = get_pubkey_from_input(vin) + if not pubkey.valid: + continue + input_priv_keys.append( + ( + vin.private_key, + Script(vin.prevout).is_p2tr(), + ) + ) + input_pub_keys.append(pubkey) + + sending_outputs = [] + if len(input_pub_keys) > 0: + outpoints = [vin.outpoint for vin in vins] + sending_outputs = bip352.create_outputs( + input_priv_keys, outpoints, given["recipients"] + ) + # Note: order doesn't matter for creating/finding the outputs. However, different orderings of the recipient addresses + # will produce different generated outputs if sending to multiple silent payment addresses belonging to the + # same sender but with different labels. Because of this, expected["outputs"] contains all possible valid output sets, + # based on all possible permutations of recipient address orderings. Must match exactly one of the possible output sets. + assert any( + set(sending_outputs) == set(lst) for lst in expected["outputs"] + ), "Sending test failed" + print(f"Sending outputs: {sending_outputs}") + else: + assert ( + sending_outputs == expected["outputs"][0] == [] + ), "Sending test failed" From 4fd6fabbc5a60f878332f8decfb24618520d259e Mon Sep 17 00:00:00 2001 From: notTanveer Date: Fri, 8 Aug 2025 18:37:55 +0530 Subject: [PATCH 5/7] chore: revert utils --- src/embit/bip352.py | 59 +++++++---- src/embit/script.py | 98 +++++++++++++++++ src/embit/transaction.py | 211 ++++++------------------------------- tests/tests/test_bip352.py | 99 ++++++++--------- 4 files changed, 216 insertions(+), 251 deletions(-) diff --git a/src/embit/bip352.py b/src/embit/bip352.py index dc0e195..19485c7 100644 --- a/src/embit/bip352.py +++ b/src/embit/bip352.py @@ -19,7 +19,6 @@ ec_pubkey_tweak_add, ec_seckey_verify, ec_privkey_negate, - ec_pubkey_serialize, ) from embit.script import p2tr from binascii import hexlify, unhexlify @@ -130,7 +129,7 @@ def decode_silent_payment_address(address: str) -> Tuple[ec.PublicKey, ec.Public return B_scan, B_spend -def get_input_hash(outpoints: List[COutPoint], sum_pubkey_bytes: bytes) -> bytes: +def get_input_hash(outpoints: List["COutPoint"], sum_pubkey_bytes: bytes) -> bytes: lowest_outpoint = sorted(outpoints, key=lambda o: o.serialize())[0] preimage = lowest_outpoint.serialize() + sum_pubkey_bytes return tagged_hash("BIP0352/Inputs", preimage) @@ -138,11 +137,22 @@ def get_input_hash(outpoints: List[COutPoint], sum_pubkey_bytes: bytes) -> bytes def create_outputs( input_privkeys: List[Tuple[bytes, bool]], - outpoints: List[COutPoint], + outpoints: List["COutPoint"], recipients: List[str], -) -> List[str]: +) -> Dict[str, List[str]]: + """ + Creates silent payment outputs for given recipients. + + Args: + input_privkeys: List of (private_key_bytes, is_xonly) tuples + outpoints: List of transaction outpoints + recipients: List of silent payment addresses (strings) - duplicates are allowed + + Returns: + Dictionary mapping each unique recipient address to list of output hex strings + """ if not input_privkeys: - return [] + return {} signing_keys = [] for sec, is_xonly in input_privkeys: @@ -158,19 +168,23 @@ def create_outputs( a_sum = sum(signing_keys) % SECP256K1_ORDER if a_sum == 0: - return [] + return {} a_sum_bytes = a_sum.to_bytes(32, "big") A = ec_pubkey_create(a_sum_bytes) input_hash = get_input_hash(outpoints, ec_pubkey_serialize(A)) - groups: Dict[ec.PublicKey, List[ec.PublicKey]] = {} - for addr in recipients: + from collections import Counter, defaultdict + + recipient_counts = Counter(recipients) + + groups: Dict[ec.PublicKey, List[Tuple[ec.PublicKey, str, int]]] = defaultdict(list) + for addr, count in recipient_counts.items(): B_scan, B_spend = decode_silent_payment_address(addr) - groups.setdefault(B_scan, []).append(B_spend) + groups[B_scan].append((B_spend, addr, count)) - outputs: List[str] = [] + result: Dict[str, List[str]] = {addr: [] for addr in recipient_counts.keys()} scalar = (int.from_bytes(input_hash, "big") * a_sum) % SECP256K1_ORDER scalar_bytes = scalar.to_bytes(32, "big") @@ -180,25 +194,26 @@ def create_outputs( xonly_shared_secret = ec_pubkey_serialize(ecdh_point) k = 0 - for B_spend in B_spend_list: - t_k = tagged_hash( - "BIP0352/SharedSecret", - xonly_shared_secret + k.to_bytes(4, "big"), - ) + for B_spend, addr, count in B_spend_list: + for _ in range(count): + t_k = tagged_hash( + "BIP0352/SharedSecret", + xonly_shared_secret + k.to_bytes(4, "big"), + ) - P_k = ec_pubkey_parse(B_spend.sec()) - ec_pubkey_tweak_add(P_k, t_k) + P_k = ec_pubkey_parse(B_spend.sec()) + ec_pubkey_tweak_add(P_k, t_k) - xonly = ec_pubkey_serialize(P_k)[1:33] - outputs.append(hexlify(xonly).decode()) - k += 1 + xonly = ec_pubkey_serialize(P_k)[1:33] + result[addr].append(hexlify(xonly).decode()) + k += 1 - return list(set(outputs)) + return result def generate_sp_destination_address( input_privkeys: List[Tuple[bytes, bool]], - outpoints: List[COutPoint], + outpoints: List["COutPoint"], recipient_sp_address: str, ) -> str: outputs = create_outputs(input_privkeys, outpoints, [recipient_sp_address]) diff --git a/src/embit/script.py b/src/embit/script.py index f638738..3b35ce1 100644 --- a/src/embit/script.py +++ b/src/embit/script.py @@ -4,6 +4,7 @@ from . import hashes from . import compact from .base import EmbitBase, EmbitError +from .util.key import ECPubKey, NUMS_H SIGHASH_ALL = 1 @@ -216,3 +217,100 @@ def script_sig_p2sh(redeem_script): def witness_p2wpkh(signature, pubkey, sighash=SIGHASH_ALL): return Witness([signature.serialize() + bytes([sighash]), pubkey.sec()]) + + +# New helper: extract/validate input pubkey for various script types + + +def get_input_pubkey( + prevout_script, script_sig: bytes | str | None = None, witness=None +) -> ECPubKey: + """Extract and validate a public key for an input based on its prevout script type. + + - prevout_script: Script or raw bytes of the prevout scriptPubKey + - script_sig: raw bytes or hex string of the scriptSig (if legacy) + - witness: Witness object or a list of bytes for segwit/taproot + + Returns ECPubKey() with .valid=False if no suitable compressed pubkey can be determined. + """ + if isinstance(prevout_script, bytes): + spk = Script(prevout_script) + else: + spk = prevout_script + + if isinstance(script_sig, str): + try: + ss = bytes.fromhex(script_sig) + except Exception: + ss = b"" + elif isinstance(script_sig, bytes): + ss = script_sig + else: + ss = b"" + + if isinstance(witness, Witness): + wstack = witness.items + elif isinstance(witness, list): + wstack = witness + else: + wstack = [] + + script_type = spk.script_type() + + if script_type == "p2pkh": + spk_hash = spk.data[3:23] + for i in range(len(ss), 32, -1): + if i >= 33: + pubkey_bytes = ss[i - 33 : i] + if len(pubkey_bytes) == 33 and pubkey_bytes[0] in (0x02, 0x03): + if hashes.hash160(pubkey_bytes) == spk_hash: + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid and pubkey.is_compressed: + return pubkey + return ECPubKey() + + if script_type == "p2sh": + if len(ss) > 1 and wstack: + pubkey_bytes = wstack[-1] + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid and pubkey.is_compressed: + return pubkey + return ECPubKey() + + if script_type == "p2wpkh": + if wstack: + pubkey_bytes = wstack[-1] + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid and pubkey.is_compressed: + return pubkey + return ECPubKey() + + if script_type == "p2tr": + if wstack: + # strip annex if present (last element starting with 0x50) + if len(wstack) > 1 and wstack[-1][:1] == b"\x50": + wstack = wstack[:-1] + # Script-path spend: if control block signals NUMS, skip + if len(wstack) > 1: + control_block = wstack[-1] + if len(control_block) >= 33 and control_block[1:33] == NUMS_H.to_bytes( + 32, "big" + ): + return ECPubKey() + # Key-path spend: reconstruct even-y compressed SEC from x-only + if len(spk.data) >= 34: + xonly = spk.data[2:34] + pubkey_bytes = b"\x02" + xonly + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid: + return pubkey + else: + if len(spk.data) >= 34: + xonly = spk.data[2:34] + pubkey_bytes = b"\x02" + xonly + pubkey = ECPubKey().set(pubkey_bytes) + if pubkey.valid: + return pubkey + return ECPubKey() + + return ECPubKey() diff --git a/src/embit/transaction.py b/src/embit/transaction.py index f1afc60..0696531 100644 --- a/src/embit/transaction.py +++ b/src/embit/transaction.py @@ -4,183 +4,8 @@ from .base import EmbitBase, EmbitError from .script import Script, Witness from .misc import const -from embit.util.key import ECKey, ECPubKey, NUMS_H -from embit.hashes import hash160 -from io import BytesIO -import struct from binascii import unhexlify - - -def from_hex(hex_string): - """Deserialize from a hex string representation (e.g. from RPC)""" - return BytesIO(unhexlify(hex_string)) - - -def deser_txid(txid: str): - # recall that txids are serialized little-endian, but displayed big-endian - # this means when converting from a human readable hex txid, we need to first - # reverse it before deserializing it - dixt = "".join(map(str.__add__, txid[-2::-2], txid[-1::-2])) - return unhexlify(dixt) - - -def deser_compact_size(f: BytesIO): - view = f.getbuffer() - nbytes = view.nbytes - view.release() - if nbytes == 0: - return 0 # end of stream - - nit = struct.unpack(" ECPubKey: - prevout_script = Script(vin.prevout) - script_type = prevout_script.script_type() - witness_stack = vin.txinwitness.scriptWitness.stack if vin.txinwitness else [] - - if script_type == "p2pkh": - spk_hash = vin.prevout[3:23] # Extract hash from raw bytes - for i in range(len(vin.scriptSig), 32, -1): - if i >= 33: - pubkey_bytes = vin.scriptSig[i - 33 : i] - if hash160(pubkey_bytes) == spk_hash: - pubkey = ECPubKey().set(pubkey_bytes) - if pubkey.valid and pubkey.is_compressed: - return pubkey - - elif script_type == "p2sh": - if len(vin.scriptSig) > 1 and witness_stack: - pubkey_bytes = witness_stack[-1] - pubkey = ECPubKey().set(pubkey_bytes) - if pubkey.valid and pubkey.is_compressed: - return pubkey - - elif script_type == "p2wpkh" and witness_stack: - pubkey_bytes = witness_stack[-1] - pubkey = ECPubKey().set(pubkey_bytes) - if pubkey.valid and pubkey.is_compressed: - return pubkey - - elif script_type == "p2tr": - if witness_stack: - if len(witness_stack) > 1 and witness_stack[-1][:1] == b"\x50": - witness_stack = witness_stack[:-1] # Remove annex - - if len(witness_stack) > 1: # Script-path spend - control_block = witness_stack[-1] - if len(control_block) >= 33 and control_block[1:33] == NUMS_H.to_bytes( - 32, "big" - ): - return ECPubKey() - - # Key-path spend - if len(vin.prevout) >= 34: - pubkey_bytes = b"\x02" + vin.prevout[2:] - pubkey = ECPubKey().set(pubkey_bytes) - if pubkey.valid: - return pubkey - - return ECPubKey() +from typing import NamedTuple class TransactionError(EmbitError): @@ -575,3 +400,37 @@ def read_from(cls, stream): value = int.from_bytes(stream.read(8), "little") script_pubkey = Script.read_from(stream) return cls(value, script_pubkey) + + +class COutPoint(NamedTuple): + txid: bytes # endianness same as hex string displayed; reverse of tx serialization order + out_idx: int + + @classmethod + def from_str(cls, s: str) -> "COutPoint": + hash_str, idx_str = s.split(":") + assert len(hash_str) == 64, f"{hash_str} should be a sha256 hash" + return COutPoint(txid=unhexlify(hash_str), out_idx=int(idx_str)) + + def __str__(self) -> str: + return f"""COutPoint("{self.to_str()}")""" + + def __repr__(self): + return f"<{str(self)}>" + + def to_str(self) -> str: + return f"{self.txid.hex()}:{self.out_idx}" + + def to_json(self): + return [self.txid.hex(), self.out_idx] + + def serialize(self) -> bytes: + return self.txid[::-1] + int.to_bytes( + self.out_idx, length=4, byteorder="little", signed=False + ) + + def is_coinbase(self) -> bool: + return self.txid == bytes(32) + + def short_name(self): + return f"{self.txid.hex()[0:10]}:{self.out_idx}" diff --git a/tests/tests/test_bip352.py b/tests/tests/test_bip352.py index 86c0c63..6daf8c3 100644 --- a/tests/tests/test_bip352.py +++ b/tests/tests/test_bip352.py @@ -12,15 +12,7 @@ from embit.networks import NETWORKS import os import json -from embit.transaction import ( - COutPoint, - VinInfo, - CTxInWitness, - deser_txid, - get_pubkey_from_input, - from_hex, -) -from embit.script import Script +from embit.transaction import COutPoint BASIC_TEST_VECTORS = [ @@ -144,55 +136,56 @@ def test_create_silent_payments_outputs(self): ) as f: SEND_AND_RECEIVE_TEST_VECTORS = json.load(f) + from embit.script import Script, Witness, get_input_pubkey + from io import BytesIO + for case in SEND_AND_RECEIVE_TEST_VECTORS: for sending_test in case["sending"]: given = sending_test["given"] expected = sending_test["expected"] - vins = [ - VinInfo( - outpoint=COutPoint( - hash=deser_txid(input["txid"]), n=input["vout"] - ), - scriptSig=unhexlify(input["scriptSig"]), - txinwitness=CTxInWitness().deserialize( - from_hex(input["txinwitness"]) - ), - prevout=unhexlify(input["prevout"]["scriptPubKey"]["hex"]), - private_key=(unhexlify(input["private_key"])), + outpoints: list[COutPoint] = [] + input_privkeys: list[tuple] = [] + + for txin in given["vin"]: + outpoints.append( + COutPoint(txid=unhexlify(txin["txid"]), out_idx=txin["vout"]) ) - for input in given["vin"] - ] - - input_priv_keys = [] - input_pub_keys = [] - for vin in vins: - pubkey = get_pubkey_from_input(vin) - if not pubkey.valid: + + spk_hex = txin["prevout"]["scriptPubKey"]["hex"] + spk = Script(unhexlify(spk_hex)) + + wit_hex = txin.get("txinwitness", "") or "" + witness = None + if wit_hex: + try: + witness = Witness.read_from(BytesIO(bytes.fromhex(wit_hex))) + except Exception: + witness = None + + pub = get_input_pubkey(spk, txin.get("scriptSig", ""), witness) + if not getattr(pub, "valid", False): continue - input_priv_keys.append( - ( - vin.private_key, - Script(vin.prevout).is_p2tr(), - ) - ) - input_pub_keys.append(pubkey) - sending_outputs = [] - if len(input_pub_keys) > 0: - outpoints = [vin.outpoint for vin in vins] - sending_outputs = bip352.create_outputs( - input_priv_keys, outpoints, given["recipients"] - ) - # Note: order doesn't matter for creating/finding the outputs. However, different orderings of the recipient addresses - # will produce different generated outputs if sending to multiple silent payment addresses belonging to the - # same sender but with different labels. Because of this, expected["outputs"] contains all possible valid output sets, - # based on all possible permutations of recipient address orderings. Must match exactly one of the possible output sets. - assert any( - set(sending_outputs) == set(lst) for lst in expected["outputs"] - ), "Sending test failed" - print(f"Sending outputs: {sending_outputs}") - else: - assert ( - sending_outputs == expected["outputs"][0] == [] - ), "Sending test failed" + is_xonly = spk.is_p2tr() + input_privkeys.append((unhexlify(txin["private_key"]), is_xonly)) + + outputs_map = bip352.create_outputs( + input_privkeys=input_privkeys, + outpoints=outpoints, + recipients=given["recipients"], + ) + + expected_outputs = expected["outputs"] + + actual_outputs = [] + for recipient, outputs in outputs_map.items(): + actual_outputs.extend(outputs) + + self.assertTrue( + any( + set(actual_outputs) == set(expected_set) + for expected_set in expected_outputs + ), + f"Actual outputs {set(actual_outputs)} did not match any expected set {expected_outputs}", + ) From ae4046fb5f525cf212581ec707e2548ec61ee37c Mon Sep 17 00:00:00 2001 From: notTanveer Date: Tue, 12 Aug 2025 14:28:07 +0530 Subject: [PATCH 6/7] merge address generation(label & normal) --- src/embit/bip352.py | 58 ++++++++++++++++---------------------- tests/tests/test_bip352.py | 33 ++++------------------ 2 files changed, 30 insertions(+), 61 deletions(-) diff --git a/src/embit/bip352.py b/src/embit/bip352.py index 19485c7..89d1101 100644 --- a/src/embit/bip352.py +++ b/src/embit/bip352.py @@ -25,46 +25,38 @@ def generate_silent_payment_address( - B_scan: ec.PublicKey, B_spend: ec.PublicKey, network: str = "main", version: int = 0 -) -> str: - """ - Adapted from https://github.com/bitcoin/bips/blob/master/bip-0352/reference.py - """ - data = bech32.convertbits(B_scan.sec() + B_spend.sec(), 8, 5) - hrp = "sp" if network == "main" else "tsp" - return bech32.bech32_encode(bech32.Encoding.BECH32M, hrp, [version] + data) - - -def generate_labeled_silent_payment_address( - b_scan: ec.PrivateKey, - B_spend: ec.PublicKey, - label, + scan_privkey: ec.PrivateKey, + spend_pubkey: ec.PublicKey, + label: int | str | bytes | None = None, network: str = "main", version: int = 0, ) -> str: """ - The spending key is tweaked with the label to generate a labeled silent payment address. - see: https://github.com/bitcoin/bips/blob/master/bip-0352.mediawiki#address-encoding + Adapted from https://github.com/bitcoin/bips/blob/master/bip-0352/reference.py - `label` must be an int, str, or bytes. - """ - if isinstance(label, int): - label_bytes = label.to_bytes(4, "big") - elif isinstance(label, str): - label_bytes = label.encode() - elif isinstance(label, bytes): - label_bytes = label - else: - raise Exception("Label must be an int, str, or bytes.") + Generates the recipient's reusable silent payment address for a given: + * scanning key (can be PublicKey or PrivateKey) + * spending pubkey + * optional label for labeled addresses - tweak = tagged_hash("BIP0352/Label", b_scan.secret + label_bytes) - label_pubkey = ec.PublicKey( - secp256k1.ec_pubkey_add(secp256k1.ec_pubkey_parse(B_spend.sec()), tweak) - ) + if scan_key is a PrivateKey and label is provided, generates a labeled address. + """ + scan_pubkey = scan_privkey.get_public_key() + if label is not None: + if isinstance(label, int): + label = label.to_bytes(4, "big") + elif isinstance(label, str): + label = label.encode() + tweak = tagged_hash("BIP0352/Label", scan_privkey.secret + label) + spend_pubkey = ec.PublicKey( + secp256k1.ec_pubkey_add( + secp256k1.ec_pubkey_parse(spend_pubkey.sec()), tweak + ) + ) - return generate_silent_payment_address( - b_scan.get_public_key(), label_pubkey, network=network, version=version - ) + data = bech32.convertbits(scan_pubkey.sec() + spend_pubkey.sec(), 8, 5) + hrp = "sp" if network == "main" else "tsp" + return bech32.bech32_encode(bech32.Encoding.BECH32M, hrp, [version] + data) # TODO: use the bech32 decode function once the flexible bech32 PR is in diff --git a/tests/tests/test_bip352.py b/tests/tests/test_bip352.py index 6daf8c3..c1229d7 100644 --- a/tests/tests/test_bip352.py +++ b/tests/tests/test_bip352.py @@ -9,7 +9,6 @@ import pytest from embit import bip352 from embit.ec import PrivateKey -from embit.networks import NETWORKS import os import json from embit.transaction import COutPoint @@ -48,26 +47,10 @@ def test_generate_silent_payment_address(self): spend_priv_key = PrivateKey(unhexlify(test_vector["spend_priv_key"])) scan_priv_key = PrivateKey(unhexlify(test_vector["scan_priv_key"])) sp_address = bip352.generate_silent_payment_address( - scan_priv_key.get_public_key(), spend_priv_key.get_public_key() + scan_priv_key, spend_priv_key.get_public_key() ) assert sp_address == test_vector["sp_address"] - def test_generate_silent_payment_address_for_network(self): - """Test network silent payment addrs should start with "tsp" """ - test_networks = [k for k in NETWORKS.keys() if k != "main"] - scan_pubkey = PrivateKey( - unhexlify(BASIC_TEST_VECTORS[0]["spend_priv_key"]) - ).get_public_key() - spend_pubkey = PrivateKey( - unhexlify(BASIC_TEST_VECTORS[0]["scan_priv_key"]) - ).get_public_key() - - for network in test_networks: - payment_addr = bip352.generate_silent_payment_address( - scan_pubkey, spend_pubkey, network=network - ) - assert payment_addr.startswith("tsp") - def test_generate_labeled_silent_payment_address(self): """Should generate the expected labeled silent payment addresses""" spend_priv_key = PrivateKey(unhexlify(LABEL_TEST_VECTORS["spend_priv_key"])) @@ -75,30 +58,24 @@ def test_generate_labeled_silent_payment_address(self): for label, address in zip( LABEL_TEST_VECTORS["labels"], LABEL_TEST_VECTORS["addresses"] ): - sp_address = bip352.generate_labeled_silent_payment_address( + sp_address = bip352.generate_silent_payment_address( scan_priv_key, spend_priv_key.get_public_key(), label ) assert sp_address == address # Label may also be a string, but the bip does not provide any test vectors - bip352.generate_labeled_silent_payment_address( + bip352.generate_silent_payment_address( scan_priv_key, spend_priv_key.get_public_key(), label="tenant 6102" ) # Label may also be passed in as bytes - bip352.generate_labeled_silent_payment_address( + bip352.generate_silent_payment_address( scan_priv_key, spend_priv_key.get_public_key(), label="I am bytes".encode() ) - with pytest.raises(Exception): - # Label is required - bip352.generate_labeled_silent_payment_address( - scan_priv_key, spend_priv_key.get_public_key() - ) - with pytest.raises(Exception): # Label must be an int, str, or bytes - bip352.generate_labeled_silent_payment_address( + bip352.generate_silent_payment_address( scan_priv_key, spend_priv_key.get_public_key(), label=1.0 ) From 6ef9d4ed8c5885592c6dbacf4969a600493ed9ed Mon Sep 17 00:00:00 2001 From: notTanveer Date: Thu, 14 Aug 2025 01:10:08 +0530 Subject: [PATCH 7/7] update docstring --- src/embit/bip352.py | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/src/embit/bip352.py b/src/embit/bip352.py index 89d1101..dddcf6c 100644 --- a/src/embit/bip352.py +++ b/src/embit/bip352.py @@ -35,11 +35,9 @@ def generate_silent_payment_address( Adapted from https://github.com/bitcoin/bips/blob/master/bip-0352/reference.py Generates the recipient's reusable silent payment address for a given: - * scanning key (can be PublicKey or PrivateKey) - * spending pubkey + * scan private key + * spend public key * optional label for labeled addresses - - if scan_key is a PrivateKey and label is provided, generates a labeled address. """ scan_pubkey = scan_privkey.get_public_key() if label is not None: