def test_derive_exceptions() -> None:
# root key, zero depth
rootmxprv = "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xprv = bip32.derive(rootmxprv, b"\x80\x00\x00\x00")
xprv = bip32.derive(xprv, ".")
# FIXME: this failure shoud be required
# errmsg = "public derivation at depth one level"
# with pytest.raises(UserWarning, match=errmsg):
# bip32.deserialize(bip32.derive(rootmxprv, 0))
for der_path in ("", "/1"):
with pytest.raises(ValueError,
match="empty derivation path root: must be m or ."):
bip32.derive(xprv, der_path)
for der_path in (";/0", "invalid index", "800000"):
with pytest.raises(ValueError, match="invalid derivation path root: "):
bip32.derive(xprv, der_path)
with pytest.raises(ValueError,
match="derivation path depth greater than 255: "):
bip32.derive(xprv, "." + 256 * "/0")
errmsg = "absolute derivation path for non-root master key"
with pytest.raises(ValueError, match=errmsg):
bip32.derive(xprv, "m / 44 h/0h/1h/0/10")
with pytest.raises(ValueError, match="index must be 4-bytes, not "):
bip32.derive(xprv, b"\x00" * 5)
errmsg = "int too big to convert"
for index in (256**4, 0x8000000000):
with pytest.raises(OverflowError, match=errmsg):
bip32.derive(xprv, index)
errmsg = "derivation path final depth greater than 255: "
with pytest.raises(ValueError, match=errmsg):
bip32.derive(xprv, "." + 255 * "/0")
rootxprv = "xprv9s21ZrQH143K2ZP8tyNiUtgoezZosUkw9hhir2JFzDhcUWKz8qFYk3cxdgSFoCMzt8E2Ubi1nXw71TLhwgCfzqFHfM5Snv4zboSebePRmLS"
temp = b58decode(rootxprv)
bad_xprv = b58encode(temp[0:45] + b"\x02" + temp[46:], 78)
errmsg = "invalid private key prefix: "
with pytest.raises(ValueError, match=errmsg):
bip32.derive(bad_xprv, 0x80000000)
xpub = bip32.xpub_from_xprv(rootxprv)
temp = b58decode(xpub)
bad_xpub = b58encode(temp[0:45] + b"\x00" + temp[46:], 78)
errmsg = "invalid public key prefix: "
with pytest.raises(ValueError, match=errmsg):
bip32.derive(bad_xpub, 0x80000000)
errmsg = "hardened derivation from public key"
with pytest.raises(ValueError, match=errmsg):
bip32.derive(xpub, 0x80000000)
def test_b58_trailing_zeros(self):
self.assertEqual(b58encode(b'\x00\x00hello world'),
b'11StV1DL6CwTryKyV')
self.assertEqual(b58decode(b'11StV1DL6CwTryKyV'),
b'\x00\x00hello world')
self.assertEqual(b58decode(b58encode(b'\0\0hello world')),
b'\x00\x00hello world')
self.assertEqual(b58encode(b58decode(b'11StV1DL6CwTryKyV')),
b'11StV1DL6CwTryKyV')
def test_derive_exceptions() -> None:
# root key, zero depth
rootmxprv = "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xprv = BIP32KeyData.b58decode(rootmxprv)
# FIXME
# assert xprv == _derive(xprv, "m")
assert rootmxprv == derive(xprv, "m")
assert rootmxprv == derive(xprv, "")
fingerprint = hashes.hash160(pub_keyinfo_from_key(xprv)[0])[:4]
assert fingerprint == _derive(xprv,
bytes.fromhex("80000000")).parent_fingerprint
for der_path in ("/1", "800000", "80000000"):
xkey = _derive(xprv, der_path)
assert fingerprint == xkey.parent_fingerprint
err_msg = "invalid literal for int"
for der_path in (";/0", "invalid index"):
with pytest.raises(ValueError, match=err_msg):
derive(xprv, der_path)
with pytest.raises(BTClibValueError, match="depth greater than 255: "):
derive(xprv, "m" + 256 * "/0")
with pytest.raises(BTClibValueError,
match="index are not a multiple of 4-bytes: "):
derive(xprv, b"\x00" * 5)
for index in (2**32, 0x8000000000):
with pytest.raises(OverflowError, match="int too big to convert"):
derive(xprv, index)
xprv = _derive(xprv, "1")
err_msg = "final depth greater than 255: "
with pytest.raises(BTClibValueError, match=err_msg):
derive(xprv, "m" + 255 * "/0")
rootxprv = "xprv9s21ZrQH143K2ZP8tyNiUtgoezZosUkw9hhir2JFzDhcUWKz8qFYk3cxdgSFoCMzt8E2Ubi1nXw71TLhwgCfzqFHfM5Snv4zboSebePRmLS"
temp = base58.b58decode(rootxprv)
bad_xprv = base58.b58encode(temp[:45] + b"\x02" + temp[46:], 78)
err_msg = "invalid private key prefix: "
with pytest.raises(BTClibValueError, match=err_msg):
derive(bad_xprv, 0x80000000)
xpub = xpub_from_xprv(rootxprv)
temp = base58.b58decode(xpub)
bad_xpub = base58.b58encode(temp[:45] + b"\x00" + temp[46:], 78)
err_msg = r"invalid public key prefix not in \(0x02, 0x03\): "
with pytest.raises(BTClibValueError, match=err_msg):
derive(bad_xpub, 0x80000000)
err_msg = "hardened derivation from public key"
with pytest.raises(BTClibValueError, match=err_msg):
derive(xpub, 0x80000000)
def test_trailing_zeros() -> None:
assert _b58encode(b"\x00\x00hello world") == b"11StV1DL6CwTryKyV"
assert _b58decode(b"11StV1DL6CwTryKyV") == b"\x00\x00hello world"
assert _b58decode(_b58encode(b"\x00\x00hello world")) == b"\x00\x00hello world"
assert _b58encode(_b58decode(b"11StV1DL6CwTryKyV")) == b"11StV1DL6CwTryKyV"
assert b58decode(b58encode(b"\x00\x00hello world"), 13) == b"\x00\x00hello world"
def test_hello_world() -> None:
assert _b58encode(b"hello world") == b"StV1DL6CwTryKyV"
assert _b58decode(b"StV1DL6CwTryKyV") == b"hello world"
assert _b58decode(_b58encode(b"hello world")) == b"hello world"
assert _b58encode(_b58decode(b"StV1DL6CwTryKyV")) == b"StV1DL6CwTryKyV"
assert b58decode(b58encode(b"hello world"), 11) == b"hello world"
def test_derive_exceptions() -> None:
# root key, zero depth
rootmxprv = "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xprv = derive(rootmxprv, bytes.fromhex("80000000"))
xprv = derive(xprv, "m")
for der_path in ("", "/1", "800000"):
derive(xprv, der_path)
err_msg = "invalid literal for int"
for der_path in (";/0", "invalid index"):
with pytest.raises(ValueError, match=err_msg):
derive(xprv, der_path)
with pytest.raises(BTClibValueError, match="depth greater than 255: "):
derive(xprv, "m" + 256 * "/0")
with pytest.raises(BTClibValueError,
match="index is not a multiple of 4-bytes: "):
derive(xprv, b"\x00" * 5)
for index in (256**4, 0x8000000000):
with pytest.raises(BTClibValueError, match="invalid index: "):
derive(xprv, index)
err_msg = "final depth greater than 255: "
with pytest.raises(BTClibValueError, match=err_msg):
derive(xprv, "m" + 255 * "/0")
rootxprv = "xprv9s21ZrQH143K2ZP8tyNiUtgoezZosUkw9hhir2JFzDhcUWKz8qFYk3cxdgSFoCMzt8E2Ubi1nXw71TLhwgCfzqFHfM5Snv4zboSebePRmLS"
temp = b58decode(rootxprv)
bad_xprv = b58encode(temp[0:45] + b"\x02" + temp[46:], 78)
err_msg = "invalid private key prefix: "
with pytest.raises(BTClibValueError, match=err_msg):
derive(bad_xprv, 0x80000000)
xpub = xpub_from_xprv(rootxprv)
temp = b58decode(xpub)
bad_xpub = b58encode(temp[0:45] + b"\x00" + temp[46:], 78)
err_msg = r"invalid public key prefix not in \(0x02, 0x03\): "
with pytest.raises(BTClibValueError, match=err_msg):
derive(bad_xpub, 0x80000000)
err_msg = "hardened derivation from public key"
with pytest.raises(BTClibValueError, match=err_msg):
derive(xpub, 0x80000000)
def b58decode(
cls: Type["BIP32KeyData"], address: String, check_validity: bool = True
) -> "BIP32KeyData":
if isinstance(address, str):
address = address.strip()
xkey_bin = base58.b58decode(address)
# pylance cannot grok the following line
return cls.parse(xkey_bin, check_validity) # type: ignore
def test_exceptions() -> None:
encoded = b58encode(b"hello world")
b58decode(encoded, 11)
wrong_length = len(encoded) - 1
with pytest.raises(BTClibValueError, match="invalid decoded size: "):
b58decode(encoded, wrong_length)
invalid_checksum = encoded[:-4] + b"1111"
with pytest.raises(BTClibValueError, match="invalid checksum: "):
b58decode(invalid_checksum, 4)
err_msg = "'ascii' codec can't encode character "
with pytest.raises(UnicodeEncodeError, match=err_msg):
b58decode("hèllo world")
err_msg = "not enough bytes for checksum, invalid base58 decoded size: "
with pytest.raises(BTClibValueError, match=err_msg):
b58decode(_b58encode(b"123"))
def test_wif():
# https://en.bitcoin.it/wiki/Wallet_import_format
prv = 0xC28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D
uncompressedKey = b"\x80" + prv.to_bytes(32, byteorder="big")
uncomprWIF = b"5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ"
wif = b58encode(uncompressedKey)
assert wif == uncomprWIF
key = b58decode(uncomprWIF)
assert key == uncompressedKey
compressedKey = b"\x80" + prv.to_bytes(32, byteorder="big") + b"\x01"
compressedWIF = b"KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617"
wif = b58encode(compressedKey)
assert wif == compressedWIF
key = b58decode(compressedWIF)
assert key == compressedKey
# string
compressedWIF = b"KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617"
key = b58decode(compressedWIF)
assert key == compressedKey
def test_utils(self):
# root key, zero depth
xprv = b"xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xdict = deserialize(xprv)
decoded_key = b58decode(xprv, 78)
self.assertEqual(xdict["version"], decoded_key[:4])
self.assertEqual(xdict["depth"], decoded_key[4])
self.assertEqual(xdict["parent_fingerprint"], decoded_key[5:9])
self.assertEqual(xdict["index"], decoded_key[9:13])
self.assertEqual(xdict["chain_code"], decoded_key[13:45])
self.assertEqual(xdict["key"], decoded_key[45:])
# zero depth with non-zero parent_fingerprint
f2 = b'\x01\x01\x01\x01'
invalid_key = b58encode(xprv[:5] + f2 + xprv[9:])
self.assertRaises(ValueError, deserialize, invalid_key)
# deserialize(invalid_key)
# zero depth with non-zero index
i2 = b'\x01\x01\x01\x01'
invalid_key = b58encode(xprv[:9] + i2 + xprv[13:])
self.assertRaises(ValueError, deserialize, invalid_key)
# deserialize(invalid_key)
# non-zero depth (255) with zero parent_fingerprint
d2 = b'ff'
invalid_key = b58encode(xprv[:4] + d2 + xprv[5:])
self.assertRaises(ValueError, deserialize, invalid_key)
# deserialize(invalid_key)
child_key = derive(xprv, 0)
# Derivation path final depth 256>255
self.assertRaises(ValueError, derive, child_key, "." + 255 * "/0")
#derive(child_key, "."+255*"/0")
# Empty derivation path
self.assertRaises(ValueError, derive, child_key, "")
#derive(child_key, "")
# Invalid derivation path root: ";"
self.assertRaises(ValueError, derive, child_key, ";/0")
#derive(child_key, ";/0")
# Derivation path depth 256>255
self.assertRaises(ValueError, derive, child_key, "." + 256 * "/0")
#derive(child_key, "." + 256*"/0")
# xkey is not a public one
self.assertRaises(ValueError, p2pkh_from_xpub, xprv)
def test_wif(self):
# https://en.bitcoin.it/wiki/Wallet_import_format
prvkey = 0xC28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D
uncompressedKey = b'\x80' + prvkey.to_bytes(32, byteorder='big')
uncompressedWIF = b'5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ'
wif = b58encode(uncompressedKey)
self.assertEqual(wif, uncompressedWIF)
key = b58decode(uncompressedWIF)
self.assertEqual(key, uncompressedKey)
compressedKey = b'\x80' + \
prvkey.to_bytes(32, byteorder='big') + b'\x01'
compressedWIF = b'KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617'
wif = b58encode(compressedKey)
self.assertEqual(wif, compressedWIF)
key = b58decode(compressedWIF)
self.assertEqual(key, compressedKey)
# string
compressedWIF = b'KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617'
key = b58decode(compressedWIF)
self.assertEqual(key, compressedKey)
def test_exceptions() -> None:
with pytest.raises(TypeError,
match="object supporting the buffer API required"):
b58encode(3) # type: ignore
encoded = b58encode(b"hello world")
b58decode(encoded, 11)
wrong_length = len(encoded) - 1
with pytest.raises(ValueError, match="invalid decoded size: "):
b58decode(encoded, wrong_length)
invalidChecksum = encoded[:-4] + b"1111"
with pytest.raises(ValueError, match="invalid checksum: "):
b58decode(invalidChecksum, 4)
with pytest.raises(ValueError,
match="'ascii' codec can't encode character "):
b58decode("hèllo world")
err_msg = "not enough bytes for checksum, invalid base58 decoded size: "
with pytest.raises(ValueError, match=err_msg):
b58decode(_b58encode(b"123"))
def test_b58_empty(self):
self.assertEqual(b58encode(b''), b'')
self.assertEqual(b58decode(b''), b'')
self.assertEqual(b58decode(b58encode(b'')), b'')
self.assertEqual(b58encode(b58decode(b'')), b'')
self.assertEqual(b58encode(''), b'')
self.assertEqual(b58decode(''), b'')
self.assertEqual(b58decode(b58encode('')), b'')
self.assertEqual(b58encode(b58decode('')), b'')
def test_serialize(self):
xprv = b"xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xprv_dict = deserialize(xprv)
xpr2 = serialize(xprv_dict)
self.assertEqual(xpr2, xprv)
# private key not in [1, n-1]
inv_key = (ec.n).to_bytes(ec.nsize, 'big')
decoded_key = b58decode(xprv, 78)
xkey = b58encode(decoded_key[:46] + inv_key)
self.assertRaises(ValueError, deserialize, xkey)
# deserialize(xkey)
xpub = xpub_from_xprv(xprv)
xpub2 = xpub_from_xprv(deserialize(xprv))
self.assertEqual(xpub, xpub2)
def test_serialization() -> None:
xkey = "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xkey_data = BIP32KeyData.b58decode(xkey)
decoded_key = base58.b58decode(xkey, 78)
assert xkey_data.version == decoded_key[:4]
assert xkey_data.depth == decoded_key[4]
assert xkey_data.parent_fingerprint == decoded_key[5:9]
assert xkey_data.index == int.from_bytes(decoded_key[9:13], "big", signed=False)
assert xkey_data.chain_code == decoded_key[13:45]
assert xkey_data.key == decoded_key[45:]
assert xkey_data.b58encode() == xkey
xpub = xpub_from_xprv(xkey)
xpub2 = xpub_from_xprv(xkey_data)
assert xpub == xpub2
def h160_from_address(b58addr: String) -> Tuple[str, bytes, str]:
"Return the payload from a base58 address."
if isinstance(b58addr, str):
b58addr = b58addr.strip()
payload = b58decode(b58addr, 21)
prefix = payload[:1]
for script_type in ("p2pkh", "p2sh"):
# with pytohn>=3.8 use walrus operator
# if network := network_from_key_value(script_type, prefix):
network = network_from_key_value(script_type, prefix)
if network:
return script_type, payload[1:], network
err_msg = f"invalid base58 address prefix: 0x{prefix.hex()}"
raise BTClibValueError(err_msg)
def test_b58_hello_world(self):
self.assertEqual(b58encode(b'hello world'), b'StV1DL6CwTryKyV')
self.assertEqual(b58decode(b'StV1DL6CwTryKyV'), b'hello world')
self.assertEqual(b58decode(b58encode(b'hello world')), b'hello world')
self.assertEqual(b58encode(b58decode(b'StV1DL6CwTryKyV')),
b'StV1DL6CwTryKyV')
self.assertEqual(b58encode("hello world"), b'StV1DL6CwTryKyV')
self.assertEqual(b58decode("StV1DL6CwTryKyV"), b'hello world')
self.assertEqual(b58decode(b58encode("hello world")), b'hello world')
self.assertEqual(b58encode(b58decode("StV1DL6CwTryKyV")),
b'StV1DL6CwTryKyV')
def _prv_keyinfo_from_wif(wif: String,
network: Optional[str] = None,
compressed: Optional[bool] = None) -> PrvkeyInfo:
"""Return private key tuple(int, compressed, network) from a WIF.
WIF is always compressed and includes network information:
here the 'network, compressed' input parameters are passed
only to allow consistency checks.
"""
if isinstance(wif, str):
wif = wif.strip()
payload = b58decode(wif)
net = network_from_key_value("wif", payload[:1])
if net is None:
raise BTClibValueError(f"invalid wif prefix: {payload[:1]!r}")
if network is not None and net != network:
raise BTClibValueError(f"not a {network} wif: {wif!r}")
ec = NETWORKS[net].curve
if len(payload) == ec.n_size + 2: # compressed WIF
compr = True
if payload[-1] != 0x01: # must have a trailing 0x01
raise BTClibValueError(
"not a compressed WIF: missing trailing 0x01")
prv_key = payload[1:-1]
elif len(payload) == ec.n_size + 1: # uncompressed WIF
compr = False
prv_key = payload[1:]
else:
raise BTClibValueError(f"wrong WIF size: {len(payload)}")
if compressed is not None and compr != compressed:
raise BTClibValueError("compression requirement mismatch")
q = int.from_bytes(prv_key, byteorder="big")
if not 0 < q < ec.n:
raise BTClibValueError(f"private key {hex(q)} not in [1, n-1]")
return q, net, compr
def test_deserialize():
xprv = "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi"
xprv_dict = deserialize(xprv)
decoded_key = b58decode(xprv, 78)
assert xprv_dict["version"] == decoded_key[:4]
assert xprv_dict["depth"] == decoded_key[4]
assert xprv_dict["parent_fingerprint"] == decoded_key[5:9]
assert xprv_dict["index"] == decoded_key[9:13]
assert xprv_dict["chain_code"] == decoded_key[13:45]
assert xprv_dict["key"] == decoded_key[45:]
# no harm in deserializing again an already deserialized key
xprv_dict = deserialize(xprv_dict)
xpr2 = serialize(xprv_dict)
assert xpr2.decode(), xprv
xpub = xpub_from_xprv(xprv)
xpub2 = xpub_from_xprv(deserialize(xprv))
assert xpub == xpub2
def test_exceptions():
with pytest.raises(TypeError, match="object supporting the buffer API required"):
b58encode(3)
encoded = b58encode(b"test")
wrong_length = len(encoded) - 1
with pytest.raises(ValueError, match="Invalid base58 decoded size: "):
b58decode(encoded, wrong_length)
invalidChecksum = encoded[:-4] + b"1111"
with pytest.raises(ValueError, match="invalid checksum: "):
b58decode(invalidChecksum, 4)
with pytest.raises(ValueError, match="'ascii' codec can't encode character "):
b58decode("hèllo world")
def test_mainnet(self):
# bitcoin core derivation style
rootxprv = "xprv9s21ZrQH143K2ZP8tyNiUtgoezZosUkw9hhir2JFzDhcUWKz8qFYk3cxdgSFoCMzt8E2Ubi1nXw71TLhwgCfzqFHfM5Snv4zboSebePRmLS"
# m / 0h / 0h / 463h
addr1 = b"1DyfBWxhVLmrJ7keyiHeMbt7N3UdeGU4G5"
indexes = [0x80000000, 0x80000000, 0x800001CF]
addr = p2pkh(xpub_from_xprv(derive(rootxprv, indexes)))
self.assertEqual(addr, addr1)
path = "m / 0h / 0h / 463h"
addr = p2pkh(xpub_from_xprv(derive(rootxprv, path)))
self.assertEqual(addr, addr1)
# m / 0h / 0h / 267h
addr2 = b"11x2mn59Qy43DjisZWQGRResjyQmgthki"
indexes = [0x80000000, 0x80000000, 0x8000010B]
addr = p2pkh(xpub_from_xprv(derive(rootxprv, indexes)))
self.assertEqual(addr, addr2)
path = "M / 0H / 0h // 267' / "
addr = p2pkh(xpub_from_xprv(derive(rootxprv, path)))
self.assertEqual(addr, addr2)
seed = "bfc4cbaad0ff131aa97fa30a48d09ae7df914bcc083af1e07793cd0a7c61a03f65d622848209ad3366a419f4718a80ec9037df107d8d12c19b83202de00a40ad"
xprv = rootxprv_from_seed(seed)
xpub = "xpub661MyMwAqRbcFMYjmw8C6dJV97a4oLss6hb3v9wTQn2X48msQB61RCaLGtNhzgPCWPaJu7SvuB9EBSFCL43kTaFJC3owdaMka85uS154cEh"
self.assertEqual(xpub_from_xprv(xprv).decode(), xpub)
ind = "./0/0"
addr = p2pkh(xpub_from_xprv(derive(xprv, ind)))
self.assertEqual(addr, b"1FcfDbWwGs1PmyhMVpCAhoTfMnmSuptH6g")
ind = "./0/1"
addr = p2pkh(xpub_from_xprv(derive(xprv, ind)))
self.assertEqual(addr, b"1K5GjYkZnPFvMDTGaQHTrVnd8wjmrtfR5x")
ind = "./0/2"
addr = p2pkh(xpub_from_xprv(derive(xprv, ind)))
self.assertEqual(addr, b"1PQYX2uN7NYFd7Hq22ECMzfDcKhtrHmkfi")
ind = "./1/0"
addr = p2pkh(xpub_from_xprv(derive(xprv, ind)))
self.assertEqual(addr, b"1BvSYpojWoWUeaMLnzbkK55v42DbizCoyq")
ind = "./1/1"
addr = p2pkh(xpub_from_xprv(derive(xprv, ind)))
self.assertEqual(addr, b"1NXB59hF4QzYpFrB7o6usLBjbk2D3ZqxAL")
ind = "./1/2"
addr = p2pkh(xpub_from_xprv(derive(xprv, ind)))
self.assertEqual(addr, b"16NLYkKtvYhW1Jp86tbocku3gxWcvitY1w")
# version/key mismatch in extended parent key
temp = b58decode(rootxprv)
bad_xprv = b58encode(temp[0:45] + b"\x01" + temp[46:], 78)
self.assertRaises(ValueError, derive, bad_xprv, 1)
# derive(bad_xprv, 1)
# version/key mismatch in extended parent key
xpub = xpub_from_xprv(rootxprv)
temp = b58decode(xpub)
bad_xpub = b58encode(temp[0:45] + b"\x00" + temp[46:], 78)
self.assertRaises(ValueError, derive, bad_xpub, 1)
# derive(bad_xpub, 1)
# no private/hardened derivation from pubkey
self.assertRaises(ValueError, derive, xpub, 0x80000000)
print("\n*** [7] Base58 encoding")
wif = b58encode(addr)
print(wif)
assert wif == b'KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617', "failure"
assert b58encode_check(
ExtKey
) == b'KwdMAjGmerYanjeui5SHS7JkmpZvVipYvB2LJGU1ZxJwYvP98617', "failure"
print("\n****** WIF to private key ******")
print("\n*** [1] Base58 WIF")
print(wif)
compressed = len(wif) - 51
print("compressed" if (compressed == 1) else "uncompressed")
print("\n*** [2] Base58 decoding")
addr = b58decode(wif)
print(addr.hex())
print("\n*** [3] Extended key (checksum verified)")
ExtKey, checksum = addr[:-4], addr[-4:]
verified = (sha256(sha256(ExtKey).digest()).digest()[:4] == checksum)
print(ExtKey.hex() + " (" + ("true" if verified else "false") + ")")
print(b58decode_check(wif).hex())
print("\n*** [4] Private key")
p2 = ExtKey[1:-1].hex() if compressed else ExtKey[1:].hex()
assert int(p2, 16) == p, "failure"
print(p2)
def hash_160_from_address(addr):
return base58.b58decode(addr)[1:21]
def test_empty() -> None:
assert _b58encode(b"") == b""
assert _b58decode(_b58encode(b"")) == b""
assert b58decode(b58encode(b""), 0) == b""
print(checksummed_payload.hex())
print("\n*** [7] Base58 encoding")
wif = base58._b58encode(checksummed_payload)
print(wif)
assert wif == b"5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ"
wif = base58.b58encode(payload)
assert wif == b"5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ"
print("\n****** WIF to private key ******")
print("\n*** [1] Base58 WIF")
print(wif)
compressed = len(wif) - 51
print("compressed" if (compressed == 1) else "uncompressed")
print("\n*** [2] Base58 decoding")
checksummed_payload = base58._b58decode(wif)
print(checksummed_payload.hex())
print("\n*** [3] payload (checksum verified)")
payload, checksum = checksummed_payload[:-4], checksummed_payload[-4:]
verified = sha256(sha256(payload).digest()).digest()[:4] == checksum
print(payload.hex() + " (" + ("true" if verified else "false") + ")")
print(base58.b58decode(wif).hex())
print("\n*** [4] Private key")
q2 = payload[1:-1].hex() if compressed else payload[1:].hex()
assert int(q2, 16) == q, "failure"
print(q2)
