def test_invalid_address(self):
"""Test whether invalid addresses fail to decode."""
for test in INVALID_ADDRESS:
witver, _ = segwit_addr.decode("bc", test)
self.assertIsNone(witver)
witver, _ = segwit_addr.decode("tb", test)
self.assertIsNone(witver)
def test_valid_address(self):
"""Test whether valid addresses decode to the correct output."""
for (address, hexscript) in VALID_ADDRESS:
hrp = "bc"
witver, witprog = segwit_addr.decode(hrp, address)
if witver is None:
hrp = "tb"
witver, witprog = segwit_addr.decode(hrp, address)
self.assertIsNotNone(witver)
scriptpubkey = segwit_scriptpubkey(witver, witprog)
self.assertEqual(scriptpubkey, binascii.unhexlify(hexscript))
addr = segwit_addr.encode(hrp, witver, witprog)
self.assertEqual(address.lower(), addr)
def P2WSH(witnessScript):
# witnessScript for P2WSH is special, be careful.
dec = None
if witnessScript.startswith("bc"):
dec = decode("bc", witnessScript)
elif witnessScript.startswith("tb"):
dec = decode("tb", witnessScript)
if dec:
return hexlify(bytes.fromhex('0020') + bytes(dec[1]))
pk_added_code = bytes.fromhex('0020') + sha256(
bytes.fromhex(witnessScript)).digest()
return hexlify(pk_added_code)
def P2WPKH(value):
dec = None
if value.startswith("bc"):
dec = decode("bc", value)
elif value.startswith("tb"):
dec = decode("tb", value)
if dec:
return hexlify(bytes.fromhex('0014') + bytes(dec[1]))
pk_added_code = bytes.fromhex('0014') + hashlib.new(
"ripemd",
sha256(bytes.fromhex(value)).digest()).digest()
return hexlify(pk_added_code)
def elm_nosig(command_set,
text,
dest_addr,
coeff=10,
len_offset=100,
final_amount=1000):
payto = command_set['payto']
broadcast = command_set['broadcast']
pref = dest_addr[:2]
script = putPushdata(b"", text.encode()) + b"\x75\x51"
init_amount = coeff * (len(script) + len_offset) + final_amount
dest_script = segwit_addr.encode(pref, 0, el.sha256(script))
tx1 = payto(dest_script, init_amount * 0.00000001)['hex']
print("Transaction sending... " + tx1)
time.sleep(10)
tx1_hash = broadcast(tx1)
dest_addr_bytes = bytes(segwit_addr.decode(pref, dest_addr)[1])
tx1_parse = el.getTransaction(bytes.fromhex(tx1))[1]
target_out = list(
filter(lambda x: x.script == b'\x00\x20' + el.sha256(script),
tx1_parse.txouts))[0]
target_out_index = list.index(tx1_parse.txouts, target_out)
tx2_parse = el.TransactionSegwit(
2, 0, 1,
[el.Txin(bytes.fromhex(tx1_hash), target_out_index, b'', 0xFFFFFFFF)],
[el.Txout(final_amount, b'\x00\x14' + dest_addr_bytes)], [[script]], 0)
tx2 = el.putTransaction(b'', tx2_parse).hex()
print("Transaction sending... " + tx2)
time.sleep(10)
broadcast(tx2)
def address_to_script(addr):
witver, witprog = segwit_addr.decode(NetworkConstants.SEGWIT_HRP, addr)
if witprog is not None:
assert (0 <= witver <= 16)
OP_n = witver + 0x50 if witver > 0 else 0
script = bh2u(bytes([OP_n]))
script += push_script(bh2u(bytes(witprog)))
return script
addrtype, hash_160 = b58_address_to_hash160(addr)
if addrtype == NetworkConstants.ADDRTYPE_P2PKH:
script = '76a9' # op_dup, op_hash_160
script += push_script(bh2u(hash_160))
script += '88ac' # op_equalverify, op_checksig
elif addrtype == NetworkConstants.ADDRTYPE_P2SH:
script = 'a9' # op_hash_160
script += push_script(bh2u(hash_160))
script += '87' # op_equal
else:
raise BaseException('unknown address type')
return script
def is_valid_syscoin_address(address, network='mainnet'):
# bech32
try:
syscoin_hrp = "tsys" if network == 'testnet' else "sys"
witver, _ = segwit_addr.decode(syscoin_hrp, address)
if witver is not None:
return True
except:
address_version = None
# Only public key addresses are allowed
# A valid address is a RIPEMD-160 hash which contains 20 bytes
# Prior to base58 encoding 1 version byte is prepended and
# 4 checksum bytes are appended so the total number of
# base58 encoded bytes should be 25. This means the number of characters
# in the encoding should be about 34 ( 25 * log2( 256 ) / log2( 58 ) ).
# Support syscoin address (T-address on testnet and S-address on mainnet)
syscoin_version = 65 if network == 'testnet' else 63
# Check length (This is important because the base58 library has problems
# with long addresses (which are invalid anyway).
if ((len(address) < 26) or (len(address) > 35)):
return False
address_version = None
try:
decoded = base58.b58decode_chk(address)
address_version = ord(decoded[0:1])
except:
# rescue from exception, not a valid Syscoin address
return False
if (address_version != syscoin_version):
return False
return True
def address_to_script(addr, *, net=None):
if net is None:
net = constants.net
witver, witprog = segwit_addr.decode(net.SEGWIT_HRP, addr)
if witprog is not None:
if not (0 <= witver <= 16):
raise BitcoinException(
'impossible witness version: {}'.format(witver))
OP_n = witver + 0x50 if witver > 0 else 0
script = bh2u(bytes([OP_n]))
script += push_script(bh2u(bytes(witprog)))
return script
addrtype, hash_160 = b58_address_to_hash160(addr)
if addrtype == net.ADDRTYPE_P2PKH:
script = '76a9' # op_dup, op_hash_160
script += push_script(bh2u(hash_160))
script += '88ac' # op_equalverify, op_checksig
elif addrtype == net.ADDRTYPE_P2SH:
script = 'a9' # op_hash_160
script += push_script(bh2u(hash_160))
script += '87' # op_equal
else:
raise BitcoinException('unknown address type: {}'.format(addrtype))
return script
def is_valid_bech32(v):
'''Check vector v for bech32 validity'''
for hrp in ['sum', 'tsum', 'rsum']:
if decode(hrp, v) != (None, None):
return True
return False
from segwit_addr import encode
from segwit_addr import decode
from hash_util import hash160,hash256
hrp='tb' #testnet
#hrp='bc' #mainnet
pubkey1='21026ccfb8061f235cc110697c0bfb3afb99d82c886672f6b9b5393b25a434c0cbf3'
pubkey2='2103befa190c0c22e2f53720b1be9476dcf11917da4665c44c9c71c3a2d28a933c35'
pubkey3='2102be46dc245f58085743b1cc37c82f0d63a960efa43b5336534275fc469b49f4ac'
data='52'+pubkey1+pubkey2+pubkey3+'53'+'ae'
script_hash=hash256(data.decode('hex')).encode('hex')
witver=0
witprog=[int(x) for x in bytearray.fromhex(script_hash)]
#print witprog
address=encode(hrp, witver, witprog)
print address
data=decode(hrp, address)
#print data
def is_segwit_address(addr):
try:
witver, witprog = segwit_addr.decode(NetworkConstants.SEGWIT_HRP, addr)
except Exception as e:
return False
return witprog is not None
def is_valid_bech32(v):
'''Check vector v for bech32 validity'''
for hrp in ['bc', 'tb', 'bcrt']:
if decode(hrp, v) != (None, None):
return True
return False
def elm_sig(command_set,
text,
dest_addr,
coeff=10,
len_offset=100,
final_amount=1000):
payto = command_set['payto']
broadcast = command_set['broadcast']
createnewaddress = command_set['createnewaddress']
getprivatekeys = command_set['getprivatekeys']
pref = dest_addr[:2]
tmp_addr = createnewaddress()
tmp_addr_bytes = bytes(segwit_addr.decode(pref, tmp_addr)[1])
script = el.putPushdata(
b"",
text.encode()) + b"\x75\x76\xA9\x14" + tmp_addr_bytes + b"\x88\xAC"
init_amount = coeff * (len(script) + len_offset) + final_amount
dest_script = segwit_addr.encode(pref, 0, el.sha256(script))
tx1 = payto(dest_script, init_amount * 0.00000001)['hex']
print("Transaction sending... " + tx1)
time.sleep(10)
tx1_hash = broadcast(tx1)
dest_addr_bytes = bytes(segwit_addr.decode(pref, dest_addr)[1])
tx1_parse = el.getTransaction(bytes.fromhex(tx1))[1]
target_out = list(
filter(lambda x: x.script == b'\x00\x20' + el.sha256(script),
tx1_parse.txouts))[0]
target_out_index = list.index(tx1_parse.txouts, target_out)
hashtype = el.SIGHASH_ALL
tx2_in = [
el.Txin(bytes.fromhex(tx1_hash), target_out_index, b'', 0xFFFFFFFF)
]
tx2_out = [el.Txout(final_amount, b'\x00\x14' + dest_addr_bytes)]
tx2_parse = el.TransactionSegwit(2, 0, 1, tx2_in, tx2_out, [[script]], 0)
txdigest = el.witness_digest(tx2_parse, hashtype, 0, init_amount,
b'\x00\x20' + el.sha256(script), script)
txsign = sign_tx_hash(
txdigest,
bitcoin.deserialize_privkey(getprivatekeys(tmp_addr))[1], hashtype)
tx2_parse_signed = el.TransactionSegwit(2, 0, 1, tx2_in, tx2_out,
[[txsign[1], txsign[0], script]],
0)
tx2 = el.putTransaction(b'', tx2_parse_signed).hex()
print("Transaction sending... " + tx2)
time.sleep(10)
broadcast(tx2)