def test_p2sh(self):
script_type = "p2sh"
# self-consistency
pubkey = "02" "cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
pubkey_hash = hash160(pubkey)
redeem_script = scriptPubKey_from_payload("p2pkh", pubkey_hash)
payload = hash160(redeem_script)
script = encode(["OP_HASH160", payload, "OP_EQUAL"])
# straight to the scriptPubKey
scriptPubKey = p2sh(redeem_script)
self.assertEqual(scriptPubKey.hex(), script.hex())
# to the scriptPubKey in two steps (through payload)
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
# data -> payload is not invertible (hash functions)
# address
network = "mainnet"
address = base58address.p2sh(decode(redeem_script), network)
address2 = address_from_scriptPubKey(scriptPubKey, network)
self.assertEqual(address, address2)
prefix = NETWORKS[network]["p2sh"]
address2 = b58address_from_h160(prefix, payload, network)
self.assertEqual(address, address2)
scriptPubKey2, network2 = scriptPubKey_from_address(address)
self.assertEqual(scriptPubKey2, scriptPubKey)
self.assertEqual(network2, network)
# documented test case: https://learnmeabitcoin.com/guide/p2sh
payload = "748284390f9e263a4b766a75d0633c50426eb875"
script = "a914748284390f9e263a4b766a75d0633c50426eb87587"
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script)
network = "mainnet"
address = b"3CK4fEwbMP7heJarmU4eqA3sMbVJyEnU3V"
address2 = address_from_scriptPubKey(scriptPubKey, network)
self.assertEqual(address, address2)
scriptPubKey2, network2 = scriptPubKey_from_address(address)
self.assertEqual(scriptPubKey2, scriptPubKey)
self.assertEqual(network2, network)
# invalid size: 21 bytes instead of 20
self.assertRaises(ValueError, scriptPubKey_from_payload, "00" * 21,
"p2sh")
def test_p2wsh() -> None:
# self-consistency
pubkey = "02 cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
pubkey_hash = hash160(pubkey)
redeem_script = scriptPubKey_from_payload("p2pkh", pubkey_hash)
payload = sha256(redeem_script)
scriptPubKey = script.encode([0, payload])
assert scriptPubKey == p2wsh(script.decode(redeem_script))
# to the scriptPubKey in two steps (through payload)
script_type = "p2wsh"
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
# back from the scriptPubKey to the payload
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
# bech32 address
network = "mainnet"
address = bech32address.p2wsh(redeem_script, network)
assert address == address_from_scriptPubKey(scriptPubKey, network)
wit_ver = 0
assert address == b32address_from_witness(wit_ver, payload, network)
# back from the address to the scriptPubKey
assert (scriptPubKey, network) == scriptPubKey_from_address(address)
# p2sh-wrapped base58 address
address = base58address.p2wsh_p2sh(redeem_script, network)
assert address == b58address_from_witness(payload, network)
def test_p2pkh(self):
script_type = 'p2pkh'
# self-consistency
pubkey = "04cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaff7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
payload = hash160(pubkey)
script = encode(['OP_DUP', 'OP_HASH160', payload,
'OP_EQUALVERIFY', 'OP_CHECKSIG'])
# straight to the scriptPubKey
scriptPubKey = p2pkh(pubkey)
self.assertEqual(scriptPubKey.hex(), script.hex())
# to the scriptPubKey in two steps (through payload)
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
# data -> payload is not invertible (hash functions)
# address
network = 'mainnet'
address = base58address.p2pkh(pubkey, network)
address2 = address_from_scriptPubKey(scriptPubKey, network)
self.assertEqual(address, address2)
prefix = p2pkh_prefix_from_network(network)
address2 = b58address_from_h160(prefix, payload)
self.assertEqual(address, address2)
scriptPubKey2, network2 = scriptPubKey_from_address(address)
self.assertEqual(scriptPubKey2, scriptPubKey)
self.assertEqual(network2, network)
# documented test case: https://learnmeabitcoin.com/guide/p2pkh
payload = "12ab8dc588ca9d5787dde7eb29569da63c3a238c"
script = "76a91412ab8dc588ca9d5787dde7eb29569da63c3a238c88ac"
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script)
network = 'mainnet'
address = b"12higDjoCCNXSA95xZMWUdPvXNmkAduhWv"
address2 = address_from_scriptPubKey(scriptPubKey, network)
self.assertEqual(address, address2)
scriptPubKey2, network2 = scriptPubKey_from_address(address)
self.assertEqual(scriptPubKey2, scriptPubKey)
self.assertEqual(network2, network)
# Invalid size: 11 bytes instead of 20
self.assertRaises(
ValueError, scriptPubKey_from_payload, "00" * 11, 'p2pkh')
def test_p2ms_2(self):
pubkey1 = (
"04"
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
)
pubkey2 = (
"04"
"61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
"19aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af"
)
pubkey3 = (
"04"
"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798"
"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8"
)
pubkeys = [pubkey1, pubkey2, pubkey3]
m = 1
n = len(pubkeys)
script = [m] + pubkeys + [n, "OP_CHECKMULTISIG"]
payload_from_scriptPubKey(script)
scriptPubKey_from_payload("p2ms", pubkeys, m)
# Invalid list of Octets for p2sh script
self.assertRaises(ValueError, scriptPubKey_from_payload, "p2sh", pubkeys, 0)
# scriptPubKey_from_payload('p2sh', pubkeys, 0)
# Invalid number of keys (0) in m-of-n multisignature
script = [1, 3, "OP_CHECKMULTISIG"]
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
# payload_from_scriptPubKey(script)
# Keys (2) / n (3) mismatch in m-of-n multisignature
script = [1, pubkey1, pubkey2, 3, "OP_CHECKMULTISIG"]
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
# payload_from_scriptPubKey(script)
# Impossible 3-of-2 multisignature
script = [3, pubkey1, pubkey2, 2, "OP_CHECKMULTISIG"]
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
# payload_from_scriptPubKey(script)
# Invalid m (0) in 0-of-2 multisignature
script = [0, pubkey1, pubkey2, 2, "OP_CHECKMULTISIG"]
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
# payload_from_scriptPubKey(script)
# 133-th byte in 1-of-3 multisignature payload is 0x40,
# it should have been 0x41
script = [1, pubkey1, pubkey2, pubkey3, 3, "OP_CHECKMULTISIG"]
bscript = encode(script)
script = bscript[:133] + b"\x40" + bscript[134:]
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
def test_nulldata() -> None:
# self-consistency
string = "time-stamped data"
payload = string.encode()
scriptPubKey = script.encode(["OP_RETURN", payload])
assert scriptPubKey == nulldata(string)
# to the scriptPubKey in two steps (through payload)
script_type = "nulldata"
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
# back from the scriptPubKey to the payload
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
# data -> payload in this case is invertible (no hash functions)
assert payload.decode() == string
err_msg = "no address for null data script"
with pytest.raises(ValueError, match=err_msg):
address_from_scriptPubKey(scriptPubKey)
# documented test cases: https://learnmeabitcoin.com/guide/nulldata
string = "hello world"
payload = string.encode()
assert payload.hex() == "68656c6c6f20776f726c64" # pylint: disable=no-member
scriptPubKey = b"\x6a\x0b" + payload
assert scriptPubKey == nulldata(string)
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
# documented test cases: https://learnmeabitcoin.com/guide/nulldata
string = "charley loves heidi"
payload = string.encode()
assert (payload.hex() # pylint: disable=no-member
== "636861726c6579206c6f766573206865696469")
scriptPubKey = b"\x6a\x13" + payload
assert scriptPubKey == nulldata(string)
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
# documented test cases: https://learnmeabitcoin.com/guide/nulldata
string = "家族も友達もみんなが笑顔の毎日がほしい"
payload = string.encode()
assert (
payload.hex() # pylint: disable=no-member
==
"e5aeb6e6978fe38282e58f8be98194e38282e381bfe38293e381aae3818ce7ac91e9a194e381aee6af8ee697a5e3818ce381bbe38197e38184"
)
scriptPubKey = b"\x6a\x39" + payload
assert scriptPubKey == nulldata(string)
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
def test_p2pk() -> None:
# self-consistency
pubkey = "02 cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
scriptPubKey = script.encode([pubkey, "OP_CHECKSIG"])
assert scriptPubKey == p2pk(pubkey)
# to the scriptPubKey in two steps (through payload)
script_type = "p2pk"
assert scriptPubKey == scriptPubKey_from_payload(script_type, pubkey)
# back from the scriptPubKey to the payload
assert (script_type, bytes.fromhex(pubkey),
0) == payload_from_scriptPubKey(scriptPubKey)
err_msg = "no address for p2pk scriptPubKey"
with pytest.raises(ValueError, match=err_msg):
address_from_scriptPubKey(scriptPubKey)
# documented test case: https://learnmeabitcoin.com/guide/p2pk
pubkey = (
"04"
"ae1a62fe09c5f51b13905f07f06b99a2f7159b2225f374cd378d71302fa28414"
"e7aab37397f554a7df5f142c21c1b7303b8a0626f1baded5c72a704f7e6cd84c")
scriptPubKey = "41" + pubkey + "ac"
assert scriptPubKey == p2pk(pubkey).hex()
# invalid size: 34 bytes instead of (33, 65)
pubkey = ( # fmt: off
"03"
"ae1a62fe09c5f51b13905f07f06b99a2f7159b2225f374cd378d71302fa28414"
"14") # fmt: on
err_msg = "not a private or public key: "
with pytest.raises(ValueError, match=err_msg):
p2pk(pubkey)
def test_CLT(self):
network = 'mainnet'
vault_pubkeys = [b'\x00' * 33, b'\x11' * 33, b'\x22' * 33]
recovery_pubkeys = [b'\x77' * 33, b'\x88' * 33, b'\x99' * 33]
redeem_script = encode([
'OP_IF',
2, *vault_pubkeys, 3, 'OP_CHECKMULTISIG',
'OP_ELSE',
500, 'OP_CHECKLOCKTIMEVERIFY', 'OP_DROP',
2, *recovery_pubkeys, 3, 'OP_CHECKMULTISIG',
'OP_ENDIF'
])
payload = sha256(redeem_script)
script = "00207b5310339c6001f75614daa5083839fa54d46165f6c56025cc54d397a85a5708"
scriptPubKey = p2wsh(redeem_script)
self.assertEqual(scriptPubKey.hex(), script)
scriptPubKey = scriptPubKey_from_payload('p2wsh', payload)
self.assertEqual(scriptPubKey.hex(), script)
address = b"bc1q0df3qvuuvqqlw4s5m2jsswpelf2dgct97mzkqfwv2nfe02z62uyq7n4zjj"
address2 = address_from_scriptPubKey(scriptPubKey, network)
self.assertEqual(address, address2)
address2 = bech32address.p2wsh(redeem_script, network)
self.assertEqual(address, address2)
address2 = b32address_from_witness(0, payload, network)
self.assertEqual(address, address2)
def test_p2ms_3(self):
# mixed compressed / uncompressed public keys
pubkey1 = (
"04"
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
)
pubkey2 = (
"03" "61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
)
pubkey3 = (
"02" "79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798"
)
pubkeys = [
bytes.fromhex(pubkey1),
bytes.fromhex(pubkey2),
bytes.fromhex(pubkey3),
]
m = 1
n = len(pubkeys)
script = scriptPubKey_from_payload("p2ms", pubkeys, m)
pubkeys.sort()
exp_script = encode([m] + pubkeys + [n, "OP_CHECKMULTISIG"])
self.assertEqual(script.hex(), exp_script.hex())
script_type, payload, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, "p2ms")
self.assertEqual(m, m2)
self.assertEqual(pubkeys, payload)
def test_CLT() -> None:
network = "mainnet"
fed_pubkeys = [b"\x00" * 33, b"\x11" * 33, b"\x22" * 33]
rec_pubkeys = [b"\x77" * 33, b"\x88" * 33, b"\x99" * 33]
# fmt: off
redeem_script = script.encode([
"OP_IF",
2,
*fed_pubkeys,
3,
"OP_CHECKMULTISIG", # noqa E131
"OP_ELSE",
500,
"OP_CHECKLOCKTIMEVERIFY",
"OP_DROP", # noqa E131
2,
*rec_pubkeys,
3,
"OP_CHECKMULTISIG", # noqa E131
"OP_ENDIF",
])
# fmt: on
payload = sha256(redeem_script)
scriptPubKey = (
"00207b5310339c6001f75614daa5083839fa54d46165f6c56025cc54d397a85a5708")
assert scriptPubKey == p2wsh(redeem_script).hex()
assert scriptPubKey == scriptPubKey_from_payload("p2wsh", payload).hex()
address = b"bc1q0df3qvuuvqqlw4s5m2jsswpelf2dgct97mzkqfwv2nfe02z62uyq7n4zjj"
assert address == address_from_scriptPubKey(scriptPubKey, network)
assert address == b32address_from_witness(0, payload, network)
def test_p2ms_p2sh() -> None:
"BIP67 test vectors https://en.bitcoin.it/wiki/BIP_0067"
data_folder = path.join(path.dirname(__file__), "test_data")
filename = path.join(data_folder, "bip67_test_vectors.json")
with open(filename, "r") as f:
# json.dump(test_vectors, f, indent=4)
test_vectors = json.load(f)
m = 2
for i in test_vectors:
keys, address = test_vectors[i]
errmsg = f"Test vector #{int(i)}"
scriptPubKey = p2ms(keys, m)
addr = base58address.p2sh(scriptPubKey)
assert addr.decode() == address, errmsg
scriptPubKey = scriptPubKey_from_payload("p2ms", keys, m)
addr = base58address.p2sh(scriptPubKey)
assert addr.decode() == address, errmsg
script_type, payload, m2 = payload_from_scriptPubKey(scriptPubKey)
assert script_type == "p2ms", errmsg
for key, k in zip(sorted(keys), payload):
assert key == k.hex(), errmsg
assert m2 == m, errmsg
def test_p2wsh(self):
script_type = "p2wsh"
# self-consistency
pubkey = "02" "cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
pubkey_hash = hash160(pubkey)
redeem_script = scriptPubKey_from_payload("p2pkh", pubkey_hash)
payload = sha256(redeem_script)
script = encode([0, payload])
# straight to the scriptPubKey
scriptPubKey = p2wsh(decode(redeem_script))
self.assertEqual(scriptPubKey.hex(), script.hex())
# to the scriptPubKey in two steps (through payload)
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
# data -> payload is not invertible (hash functions)
# bech32 address
network = "mainnet"
address = bech32address.p2wsh(redeem_script, network)
address2 = address_from_scriptPubKey(scriptPubKey, network)
self.assertEqual(address, address2)
address2 = b32address_from_witness(0, payload, network)
self.assertEqual(address, address2)
scriptPubKey2, network2 = scriptPubKey_from_address(address)
self.assertEqual(scriptPubKey2, scriptPubKey)
self.assertEqual(network2, network)
# p2sh-wrapped base58 address
address = base58address.p2wsh_p2sh(redeem_script, network)
address2 = b58address_from_witness(payload, network)
self.assertEqual(address, address2)
def test_p2pkh() -> None:
# self-consistency
pubkey = (
"04 "
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4")
payload = hash160(pubkey)
scriptPubKey = script.encode(
["OP_DUP", "OP_HASH160", payload, "OP_EQUALVERIFY", "OP_CHECKSIG"])
assert scriptPubKey == p2pkh(pubkey)
# to the scriptPubKey in two steps (through payload)
script_type = "p2pkh"
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
# back from the scriptPubKey to the payload
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
# base58 address
network = "mainnet"
address = base58address.p2pkh(pubkey, network)
assert address == address_from_scriptPubKey(scriptPubKey, network)
prefix = NETWORKS[network]["p2pkh"]
assert address == b58address_from_h160(prefix, payload, network)
# back from the address to the scriptPubKey
assert (scriptPubKey, network) == scriptPubKey_from_address(address)
# documented test case: https://learnmeabitcoin.com/guide/p2pkh
payload = "12ab8dc588ca9d5787dde7eb29569da63c3a238c"
scriptPubKey = "76a914" + payload + "88ac"
assert scriptPubKey == scriptPubKey_from_payload(script_type,
payload).hex()
address = b"12higDjoCCNXSA95xZMWUdPvXNmkAduhWv"
assert address == address_from_scriptPubKey(scriptPubKey, network)
assert (bytes.fromhex(scriptPubKey),
network) == scriptPubKey_from_address(address)
# invalid size: 11 bytes instead of 20
err_msg = "invalid size: "
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload(script_type, "00" * 11)
def test_p2ms_p2sh(self):
test_vectors = [
[0,
['022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da',
'03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9',
'021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18',
],
b'3Q4sF6tv9wsdqu2NtARzNCpQgwifm2rAba'
],
[1,
['02ff12471208c14bd580709cb2358d98975247d8765f92bc25eab3b2763ed605f8',
'02fe6f0a5a297eb38c391581c4413e084773ea23954d93f7753db7dc0adc188b2f',
],
b'39bgKC7RFbpoCRbtD5KEdkYKtNyhpsNa3Z'
],
[2,
['02632b12f4ac5b1d1b72b2a3b508c19172de44f6f46bcee50ba33f3f9291e47ed0',
'027735a29bae7780a9755fae7a1c4374c656ac6a69ea9f3697fda61bb99a4f3e77',
'02e2cc6bd5f45edd43bebe7cb9b675f0ce9ed3efe613b177588290ad188d11b404',
],
b'3CKHTjBKxCARLzwABMu9yD85kvtm7WnMfH'
],
[3,
['030000000000000000000000000000000000004141414141414141414141414141',
'020000000000000000000000000000000000004141414141414141414141414141',
'020000000000000000000000000000000000004141414141414141414141414140',
'030000000000000000000000000000000000004141414141414141414141414140',
],
b'32V85igBri9zcfBRVupVvwK18NFtS37FuD'
],
[4,
['022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da',
'03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9',
'021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18',
],
b'3Q4sF6tv9wsdqu2NtARzNCpQgwifm2rAba'
],
]
m = 2
for i, keys, address in test_vectors:
errmsg = f"Test vector #{int(i)}"
script = p2ms(keys, m)
addr = base58address.p2sh(script)
self.assertEqual(addr, address, errmsg)
script = scriptPubKey_from_payload('p2ms', keys, m)
addr = base58address.p2sh(script)
self.assertEqual(addr, address, errmsg)
script_type, payload, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, 'p2ms', errmsg)
for key, k in zip(sorted(keys), payload):
self.assertEqual(key, k.hex(), errmsg)
self.assertEqual(m2, m, errmsg)
def test_p2ms_2() -> None:
pubkey1 = "04 cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
pubkey2 = "04 61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765 19aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af"
pubkey3 = "04 79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798 483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8"
pubkeys = [pubkey1, pubkey2, pubkey3]
m = 1
n = len(pubkeys)
scriptPubKey = [m] + pubkeys + [n, "OP_CHECKMULTISIG"]
payload_from_scriptPubKey(scriptPubKey)
scriptPubKey_from_payload("p2ms", pubkeys, m)
err_msg = "invalid list of Octets for p2sh scriptPubKey"
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload("p2sh", pubkeys, 0)
err_msg = "invalid number of pubkeys in "
scriptPubKey = [1, 3, "OP_CHECKMULTISIG"]
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
err_msg = "wrong number of pubkeys in "
scriptPubKey = [1, pubkey1, pubkey2, 3, "OP_CHECKMULTISIG"]
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
err_msg = "invalid number of pubkeys in "
scriptPubKey = [3, pubkey1, pubkey2, 2, "OP_CHECKMULTISIG"]
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
err_msg = "invalid m in m-of-n multisignature: "
scriptPubKey = [0, pubkey1, pubkey2, 2, "OP_CHECKMULTISIG"]
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
scriptPubKey = script.encode(
[1, pubkey1, pubkey2, pubkey3, 3, "OP_CHECKMULTISIG"])
scriptPubKey = scriptPubKey[:133] + b"\x40" + scriptPubKey[134:]
err_msg = "wrong number of pubkeys in "
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
def test_p2sh() -> None:
# self-consistency
pubkey = "02 cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
pubkey_hash = hash160(pubkey)
redeem_script = scriptPubKey_from_payload("p2pkh", pubkey_hash)
payload = hash160(redeem_script)
scriptPubKey = script.encode(["OP_HASH160", payload, "OP_EQUAL"])
assert scriptPubKey == p2sh(redeem_script)
# to the scriptPubKey in two steps (through payload)
script_type = "p2sh"
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
# back from the scriptPubKey to the payload
assert (script_type, payload, 0) == payload_from_scriptPubKey(scriptPubKey)
# base58 address
network = "mainnet"
address = base58address.p2sh(script.decode(redeem_script), network)
assert address == address_from_scriptPubKey(scriptPubKey, network)
prefix = NETWORKS[network]["p2sh"]
assert address == b58address_from_h160(prefix, payload, network)
# back from the address to the scriptPubKey
assert (scriptPubKey, network) == scriptPubKey_from_address(address)
# documented test case: https://learnmeabitcoin.com/guide/p2sh
payload = "748284390f9e263a4b766a75d0633c50426eb875"
scriptPubKey = "a914" + payload + "87"
assert scriptPubKey == scriptPubKey_from_payload(script_type,
payload).hex()
address = b"3CK4fEwbMP7heJarmU4eqA3sMbVJyEnU3V"
assert address == address_from_scriptPubKey(scriptPubKey, network)
assert (bytes.fromhex(scriptPubKey),
network) == scriptPubKey_from_address(address)
# invalid size: 21 bytes instead of 20
err_msg = "invalid size: "
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload(script_type, "00" * 21)
def test_p2pk(self):
script_type = "p2pk"
# self-consistency
pubkey = "02" "cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
script = encode([pubkey, "OP_CHECKSIG"])
# straight to the scriptPubKey
scriptPubKey = p2pk(pubkey)
self.assertEqual(scriptPubKey.hex(), script.hex())
# to the scriptPubKey in two steps (through payload)
scriptPubKey = scriptPubKey_from_payload(script_type, pubkey)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(bytes.fromhex(pubkey).hex(), payload2.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(bytes.fromhex(pubkey).hex(), payload2.hex())
# data -> payload in this case is invertible (no hash functions)
# No address for p2pk script
self.assertRaises(ValueError, address_from_scriptPubKey, scriptPubKey)
# address_from_scriptPubKey(scriptPubKey)
# documented test case: https://learnmeabitcoin.com/guide/p2pk
pubkey = (
"04"
"ae1a62fe09c5f51b13905f07f06b99a2f7159b2225f374cd378d71302fa28414"
"e7aab37397f554a7df5f142c21c1b7303b8a0626f1baded5c72a704f7e6cd84c"
)
script = (
"4104"
"ae1a62fe09c5f51b13905f07f06b99a2f7159b2225f374cd378d71302fa28414"
"e7aab37397f554a7df5f142c21c1b7303b8a0626f1baded5c72a704f7e6cd84c"
"ac"
)
scriptPubKey = p2pk(pubkey)
self.assertEqual(scriptPubKey.hex(), script)
# Invalid size: 34 bytes instead of (33, 65)
pubkey = (
"03" "ae1a62fe09c5f51b13905f07f06b99a2f7159b2225f374cd378d71302fa28414" "14"
)
self.assertRaises(ValueError, p2pk, pubkey)
def test_exceptions() -> None:
# invalid size: 11 bytes instead of 20
err_msg = "invalid size: "
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload("p2wpkh", "00" * 11)
# invalid size: 33 bytes instead of 32
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload("p2wsh", "00" * 33)
err_msg = "unknown scriptPubKey type: "
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload("p2unkn", "00" * 32)
err_msg = "unknown scriptPubKey: "
with pytest.raises(ValueError, match=err_msg):
scriptPubKey = [16, 20 * b"\x00"]
address_from_scriptPubKey(scriptPubKey)
# Unhandled witness version (16)
err_msg = "unmanaged witness version: "
address = b32address_from_witness(16, 20 * b"\x00")
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_address(address)
def test_nulldata3() -> None:
err_msg = "invalid nulldata script lenght: "
with pytest.raises(ValueError, match=err_msg):
payload = "00" * 81
scriptPubKey_from_payload("nulldata", payload)
# wrong data lenght: 32 in 35-bytes nulldata script;
# it should have been 33
scriptPubKey = script.encode(["OP_RETURN", b"\x00" * 33])
scriptPubKey = scriptPubKey[:1] + b"\x20" + scriptPubKey[2:]
err_msg = "wrong data lenght: "
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
# wrong data lenght: 32 in 83-bytes nulldata script;
# it should have been 80
scriptPubKey = script.encode(["OP_RETURN", b"\x00" * 80])
scriptPubKey = scriptPubKey[:2] + b"\x20" + scriptPubKey[3:]
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
# missing OP_PUSHDATA1 (0x4c) in 83-bytes nulldata script,
# got 0x20 instead
scriptPubKey = script.encode(["OP_RETURN", b"\x00" * 80])
scriptPubKey = scriptPubKey[:1] + b"\x20" + scriptPubKey[2:]
err_msg = "missing OP_PUSHDATA1 "
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
assert len(script.encode(["OP_RETURN", b"\x00" * 75])) == 77
assert len(script.encode(["OP_RETURN", b"\x00" * 76])) == 79
scriptPubKey = script.encode(["OP_RETURN", b"\x00" * 76])[:-1]
err_msg = "invalid 78 bytes nulldata script length"
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
def test_nulldata2() -> None:
script_type = "nulldata"
# max length case
byte = b"\x00"
for length in (0, 1, 16, 17, 74, 75, 76, 77, 78, 79, 80):
payload = byte * length
scriptPubKey = script.encode(["OP_RETURN", payload])
assert scriptPubKey == scriptPubKey_from_payload(script_type, payload)
# back from the scriptPubKey to the payload
assert (script_type, payload,
0) == payload_from_scriptPubKey(scriptPubKey)
assert (script_type, payload,
0) == payload_from_scriptPubKey(script.decode(scriptPubKey))
def test_p2ms_3() -> None:
# mixed compressed / uncompressed public keys
pubkey1 = "04 cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
pubkey2 = "03 61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
pubkey3 = "02 79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798"
pubkeys = [
bytes.fromhex(pubkey1),
bytes.fromhex(pubkey2),
bytes.fromhex(pubkey3),
]
m = 1
n = len(pubkeys)
scriptPubKey = scriptPubKey_from_payload("p2ms", pubkeys, m)
pubkeys.sort()
exp_script = script.encode([m] + pubkeys + [n, "OP_CHECKMULTISIG"])
assert scriptPubKey.hex() == exp_script.hex()
script_type, payload, m2 = payload_from_scriptPubKey(scriptPubKey)
assert script_type == "p2ms"
assert m == m2
assert pubkeys == payload
def test_CLT():
network = "mainnet"
vault_pubkeys = [b"\x00" * 33, b"\x11" * 33, b"\x22" * 33]
recovery_pubkeys = [b"\x77" * 33, b"\x88" * 33, b"\x99" * 33]
redeem_script = encode(
[
"OP_IF",
2,
*vault_pubkeys,
3,
"OP_CHECKMULTISIG",
"OP_ELSE",
500,
"OP_CHECKLOCKTIMEVERIFY",
"OP_DROP",
2,
*recovery_pubkeys,
3,
"OP_CHECKMULTISIG",
"OP_ENDIF",
]
)
payload = sha256(redeem_script)
script = "00207b5310339c6001f75614daa5083839fa54d46165f6c56025cc54d397a85a5708"
scriptPubKey = p2wsh(redeem_script)
assert scriptPubKey.hex() == script
scriptPubKey = scriptPubKey_from_payload("p2wsh", payload)
assert scriptPubKey.hex() == script
address = (
"bc1q0df3qvuuvqqlw4s5m2jsswpelf2dgct97mzkqfwv2nfe02z62uyq7n4zjj"
).encode()
address2 = address_from_scriptPubKey(scriptPubKey, network)
assert address == address2
assert address == address2
address2 = b32address_from_witness(0, payload, network)
assert address == address2
def test_nulldata2(self):
script_type = "nulldata"
# max length case
byte = b"\x00"
for length in (0, 1, 16, 17, 74, 75, 80):
payload = byte * length
script = encode(["OP_RETURN", payload])
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(decode(script))
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
def test_p2ms(self):
script_type = "p2ms"
# self-consistency
pubkey1 = (
"04"
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
)
pubkey2 = (
"04"
"61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
"19aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af"
)
pubkeys = [bytes.fromhex(pubkey1), bytes.fromhex(pubkey2)]
m = 1
# straight to the scriptPubKey
scriptPubKey = p2ms(pubkeys, m)
n = len(pubkeys)
script = encode([m] + sorted(pubkeys) + [n, "OP_CHECKMULTISIG"])
self.assertEqual(scriptPubKey.hex(), script.hex())
# to the scriptPubKey in two steps (through payload)
scriptPubKey = scriptPubKey_from_payload(script_type, pubkeys, m)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(m, m2)
self.assertEqual(sorted(pubkeys), payload2)
script_type2, payload2, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, script_type2)
self.assertEqual(m, m2)
self.assertEqual(sorted(pubkeys), payload2)
# data -> payload in this case is invertible (no hash functions)
# No address for p2ms script
self.assertRaises(ValueError, address_from_scriptPubKey, scriptPubKey)
# address_from_scriptPubKey(scriptPubKey)
# documented test case: https://learnmeabitcoin.com/guide/p2ms
pubkey1 = (
"04"
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
)
pubkey2 = (
"04"
"61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
"19aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af"
)
pubkeys = [bytes.fromhex(pubkey1), bytes.fromhex(pubkey2)]
m = 1
n = 2
script = (
"51" # OP_1
"41" # canonical 65-bytes push
"04"
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4"
"41" # canonical 65-bytes push
"04"
"61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
"19aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af"
"52" # OP_2
"ae" # OP_CHECKMULTISIG
)
scriptPubKey = p2ms(pubkeys, 1, lexicographic_sort=False)
self.assertEqual(scriptPubKey.hex(), script)
# Impossible m>n 3-of-2 multisignature
self.assertRaises(ValueError, p2ms, pubkeys, 3)
# p2ms(pubkeys, 3)
# Invalid m (0) for p2ms script
self.assertRaises(ValueError, p2ms, pubkeys, 0)
# p2ms(pubkeys, 0)
# Invalid size: 66 bytes instead of 65
self.assertRaises(ValueError, p2ms, [pubkey1 + "00", pubkey2], 1)
# p2ms([pubkey1 + "00", pubkey2], 1)
# Invalid n (17) in 3-of-17 multisignature
self.assertRaises(ValueError, p2ms, [pubkey1] * 17, 3)
# p2ms([pubkey1]*17, 3)
# Invalid key length (66) in p2ms
badpubkeys = sorted(pubkeys)
badpubkeys[0] = badpubkeys[0] + b"\x00"
self.assertRaises(
ValueError, scriptPubKey_from_payload, script_type, badpubkeys, m
)
# scriptPubKey_from_payload(script_type, badpubkeys, m)
# Invalid key length (66) in p2ms
script = encode([m] + sorted(badpubkeys) + [n, "OP_CHECKMULTISIG"])
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
# payload_from_scriptPubKey(script)
# Invalid key in p2ms
script = encode([m] + [0, pubkeys[1]] + [n, "OP_CHECKMULTISIG"])
self.assertRaises(ValueError, payload_from_scriptPubKey, script)
# payload_from_scriptPubKey(script)
# Invalid m (0) for p2ms script
self.assertRaises(
ValueError, scriptPubKey_from_payload, script_type, pubkeys, 17
)
def test_p2ms() -> None:
script_type = "p2ms"
# self-consistency
pubkey1 = (
"04"
"cc71eb30d653c0c3163990c47b976f3fb3f37cccdcbedb169a1dfef58bbfbfaf"
"f7d8a473e7e2e6d317b87bafe8bde97e3cf8f065dec022b51d11fcdd0d348ac4")
pubkey2 = (
"04"
"61cbdcc5409fb4b4d42b51d33381354d80e550078cb532a34bfa2fcfdeb7d765"
"19aecc62770f5b0e4ef8551946d8a540911abe3e7854a26f39f58b25c15342af")
pubkeys = [bytes.fromhex(pubkey1), bytes.fromhex(pubkey2)]
m = 1
# straight to the scriptPubKey
payload = sorted(pubkeys)
n = len(pubkeys)
scriptPubKey = script.encode([m] + payload + [n, "OP_CHECKMULTISIG"])
assert scriptPubKey == p2ms(pubkeys, m)
# to the scriptPubKey in two steps (through payload)
assert scriptPubKey == scriptPubKey_from_payload(script_type, pubkeys, m)
# back from the scriptPubKey to the payload
assert (script_type, payload, m) == payload_from_scriptPubKey(scriptPubKey)
err_msg = "no address for p2ms scriptPubKey"
with pytest.raises(ValueError, match=err_msg):
address_from_scriptPubKey(scriptPubKey)
# documented test case: https://learnmeabitcoin.com/guide/p2ms
pubkeys = [bytes.fromhex(pubkey1), bytes.fromhex(pubkey2)]
m = 1
n = 2
scriptPubKey = ( # fmt: off
"51" # OP_1
"41" # canonical 65-bytes push
+ pubkey1 + "41" # noqa E148 # canonical 65-bytes push
+ pubkey2 + "52" # noqa E148 # OP_2
"ae" # OP_CHECKMULTISIG
) # fmt: on
assert scriptPubKey == p2ms(pubkeys, 1, lexicographic_sort=False).hex()
err_msg = "number-of-pubkeys < m in "
with pytest.raises(ValueError, match=err_msg):
p2ms(pubkeys, 3)
err_msg = "invalid m for p2ms scriptPubKey: "
with pytest.raises(ValueError, match=err_msg):
p2ms(pubkeys, 0)
err_msg = "not a private or public key: "
with pytest.raises(ValueError, match=err_msg):
p2ms([pubkey1 + "00", pubkey2], 1)
err_msg = "too many pubkeys in m-of-n multisignature: "
with pytest.raises(ValueError, match=err_msg):
p2ms([pubkey1] * 17, 3)
err_msg = "invalid size: "
badpubkeys = sorted(pubkeys)
badpubkeys[0] = badpubkeys[0] + b"\x00"
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload(script_type, badpubkeys, m)
scriptPubKey = script.encode([m] + sorted(badpubkeys) +
[n, "OP_CHECKMULTISIG"])
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
err_msg = "invalid key in p2ms"
scriptPubKey = script.encode([m] + [0, pubkeys[1]] +
[n, "OP_CHECKMULTISIG"])
with pytest.raises(ValueError, match=err_msg):
payload_from_scriptPubKey(scriptPubKey)
err_msg = "invalid m in m-of-n multisignature: "
with pytest.raises(ValueError, match=err_msg):
scriptPubKey_from_payload(script_type, pubkeys, 17)
def test_p2ms_p2sh(self):
"BIP67 test vectors https://en.bitcoin.it/wiki/BIP_0067"
test_vectors = {
0: [
[
(
"022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b1"
"50a0f85014da"
),
(
"03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209"
"fba0d90de6e9"
),
(
"021f2f6e1e50cb6a953935c3601284925decd3fd21bc4457125768"
"73fb8c6ebc18"
),
],
b"3Q4sF6tv9wsdqu2NtARzNCpQgwifm2rAba",
],
1: [
[
(
"02ff12471208c14bd580709cb2358d98975247d8765f92bc25eab3"
"b2763ed605f8"
),
(
"02fe6f0a5a297eb38c391581c4413e084773ea23954d93f7753db7"
"dc0adc188b2f"
),
],
b"39bgKC7RFbpoCRbtD5KEdkYKtNyhpsNa3Z",
],
2: [
[
(
"02632b12f4ac5b1d1b72b2a3b508c19172de44f6f46bcee50ba33f"
"3f9291e47ed0"
),
(
"027735a29bae7780a9755fae7a1c4374c656ac6a69ea9f3697fda6"
"1bb99a4f3e77"
),
(
"02e2cc6bd5f45edd43bebe7cb9b675f0ce9ed3efe613b177588290"
"ad188d11b404"
),
],
b"3CKHTjBKxCARLzwABMu9yD85kvtm7WnMfH",
],
3: [
[
(
"030000000000000000000000000000000000004141414141414141"
"414141414141"
),
(
"020000000000000000000000000000000000004141414141414141"
"414141414141"
),
(
"020000000000000000000000000000000000004141414141414141"
"414141414140"
),
(
"030000000000000000000000000000000000004141414141414141"
"414141414140"
),
],
b"32V85igBri9zcfBRVupVvwK18NFtS37FuD",
],
4: [
[
(
"022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b1"
"50a0f85014da"
),
(
"03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209"
"fba0d90de6e9"
),
(
"021f2f6e1e50cb6a953935c3601284925decd3fd21bc4457125768"
"73fb8c6ebc18"
),
],
b"3Q4sF6tv9wsdqu2NtARzNCpQgwifm2rAba",
],
}
m = 2
for i in test_vectors:
keys, address = test_vectors[i]
errmsg = f"Test vector #{int(i)}"
script = p2ms(keys, m)
addr = base58address.p2sh(script)
self.assertEqual(addr, address, errmsg)
script = scriptPubKey_from_payload("p2ms", keys, m)
addr = base58address.p2sh(script)
self.assertEqual(addr, address, errmsg)
script_type, payload, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, "p2ms", errmsg)
for key, k in zip(sorted(keys), payload):
self.assertEqual(key, k.hex(), errmsg)
self.assertEqual(m2, m, errmsg)
def test_nulldata(self):
script_type = "nulldata"
# self-consistency
string = "time-stamped data"
payload = string.encode()
script = encode(["OP_RETURN", payload])
# straight to the scriptPubKey
scriptPubKey = nulldata(string)
self.assertEqual(scriptPubKey.hex(), script.hex())
# to the scriptPubKey in two steps (through payload)
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
# back from the scriptPubKey to the payload
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(script)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
# data -> payload in this case is invertible (no hash functions)
self.assertEqual(payload.decode(), string)
# No address for null data script
self.assertRaises(ValueError, address_from_scriptPubKey, scriptPubKey)
# address_from_scriptPubKey(scriptPubKey)
# documented test cases: https://learnmeabitcoin.com/guide/nulldata
string = "hello world"
payload = string.encode()
self.assertEqual(payload.hex(), "68656c6c6f20776f726c64")
script = bytes.fromhex("6a0b68656c6c6f20776f726c64")
scriptPubKey = nulldata(string)
self.assertEqual(scriptPubKey.hex(), script.hex())
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
# documented test cases: https://learnmeabitcoin.com/guide/nulldata
string = "charley loves heidi"
payload = string.encode()
self.assertEqual(payload.hex(), "636861726c6579206c6f766573206865696469")
script = bytes.fromhex("6a13636861726c6579206c6f766573206865696469")
scriptPubKey = nulldata(string)
self.assertEqual(scriptPubKey.hex(), script.hex())
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload.hex(), payload2.hex())
# documented test cases: https://learnmeabitcoin.com/guide/nulldata
string = "家族も友達もみんなが笑顔の毎日がほしい"
payload = (
"e5aeb6e6978fe38282e58f8be98194e38282e381bfe38293e381aae38"
"18ce7ac91e9a194e381aee6af8ee697a5e3818ce381bbe38197e38184"
)
self.assertEqual(string.encode().hex(), payload)
script = bytes.fromhex(
"6a39e5aeb6e6978fe38282e58f8be98194e38282e381bfe38293e381aae3818c"
"e7ac91e9a194e381aee6af8ee697a5e3818ce381bbe38197e38184"
)
scriptPubKey = nulldata(string)
self.assertEqual(scriptPubKey.hex(), script.hex())
scriptPubKey = scriptPubKey_from_payload(script_type, payload)
self.assertEqual(scriptPubKey.hex(), script.hex())
script_type2, payload2, m2 = payload_from_scriptPubKey(scriptPubKey)
self.assertEqual(script_type, script_type2)
self.assertEqual(0, m2)
self.assertEqual(payload, payload2.hex())
