def test_parse(self):
hex_merkle_block = '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'
mb = MerkleBlock.parse(BytesIO(bytes.fromhex(hex_merkle_block)))
version = 0x20000000
self.assertEqual(mb.version, version)
merkle_root_hex = 'ef445fef2ed495c275892206ca533e7411907971013ab83e3b47bd0d692d14d4'
merkle_root = bytes.fromhex(merkle_root_hex)[::-1]
self.assertEqual(mb.merkle_root, merkle_root)
prev_block_hex = 'df3b053dc46f162a9b00c7f0d5124e2676d47bbe7c5d0793a500000000000000'
prev_block = bytes.fromhex(prev_block_hex)[::-1]
self.assertEqual(mb.prev_block, prev_block)
timestamp = little_endian_to_int(bytes.fromhex('dc7c835b'))
self.assertEqual(mb.timestamp, timestamp)
bits = bytes.fromhex('67d8001a')
self.assertEqual(mb.bits, bits)
nonce = bytes.fromhex('c157e670')
self.assertEqual(mb.nonce, nonce)
total = little_endian_to_int(bytes.fromhex('bf0d0000'))
self.assertEqual(mb.total, total)
hex_hashes = [
'ba412a0d1480e370173072c9562becffe87aa661c1e4a6dbc305d38ec5dc088a',
'7cf92e6458aca7b32edae818f9c2c98c37e06bf72ae0ce80649a38655ee1e27d',
'34d9421d940b16732f24b94023e9d572a7f9ab8023434a4feb532d2adfc8c2c2',
'158785d1bd04eb99df2e86c54bc13e139862897217400def5d72c280222c4cba',
'ee7261831e1550dbb8fa82853e9fe506fc5fda3f7b919d8fe74b6282f92763ce',
'f8e625f977af7c8619c32a369b832bc2d051ecd9c73c51e76370ceabd4f25097',
'c256597fa898d404ed53425de608ac6bfe426f6e2bb457f1c554866eb69dcb8d',
'6bf6f880e9a59b3cd053e6c7060eeacaacf4dac6697dac20e4bd3f38a2ea2543',
'd1ab7953e3430790a9f81e1c67f5b58c825acf46bd02848384eebe9af917274c',
'dfbb1a28a5d58a23a17977def0de10d644258d9c54f886d47d293a411cb62261',
]
hashes = [bytes.fromhex(h)[::-1] for h in hex_hashes]
self.assertEqual(mb.hashes, hashes)
flags = bytes.fromhex('b55635')
self.assertEqual(mb.flags, flags)
def parse(cls, s):
'''Takes a byte stream and parses a merkle block. Returns a Merkle Block object'''
# version - 4 bytes, Little-Endian integer
version = little_endian_to_int(s.read(4))
# prev_block - 32 bytes, Little-Endian (use [::-1])
prev_block = s.read(32)[::-1]
# merkle_root - 32 bytes, Little-Endian (use [::-1])
merkle_root = s.read(32)[::-1]
# timestamp - 4 bytes, Little-Endian integer
timestamp = little_endian_to_int(s.read(4))
# bits - 4 bytes
bits = s.read(4)
# nonce - 4 bytes
nonce = s.read(4)
# total transactions in block - 4 bytes, Little-Endian integer
total = little_endian_to_int(s.read(4))
# number of transaction hashes - varint
num_hashes = read_varint(s)
# each transaction is 32 bytes, Little-Endian
hashes = []
for _ in range(num_hashes):
hashes.append(s.read(32)[::-1])
# length of flags field - varint
flags_length = read_varint(s)
# read the flags field
flags = s.read(flags_length)
# initialize class
return cls(version, prev_block, merkle_root, timestamp, bits, nonce,
total, hashes, flags)
def parse_header(cls, s):
'''Takes a byte stream and parses a block. Returns a Block object'''
# s.read(n) will read n bytes from the stream
# version - 4 bytes, little endian, interpret as int
version = little_endian_to_int(s.read(4))
# prev_block - 32 bytes, little endian (use [::-1] to reverse)
prev_block = s.read(32)[::-1]
# merkle_root - 32 bytes, little endian (use [::-1] to reverse)
merkle_root = s.read(32)[::-1]
# timestamp - 4 bytes, little endian, interpret as int
timestamp = little_endian_to_int(s.read(4))
# bits - 4 bytes
bits = s.read(4)
# nonce - 4 bytes
nonce = s.read(4)
# initialize class
return cls(version, prev_block, merkle_root, timestamp, bits, nonce)
def parse(cls, s):
# get the length of the entire field
length = read_varint(s)
# initialize the cmds array
cmds = []
# initialize the number of bytes we've read to 0
count = 0
# loop until we've read length bytes
while count < length:
# get the current byte
current = s.read(1)
# increment the bytes we've read
count += 1
# convert the current byte to an integer
current_byte = current[0]
# if the current byte is between 1 and 75 inclusive
if current_byte >= 1 and current_byte <= 75:
# we have an cmd set n to be the current byte
n = current_byte
# add the next n bytes as an cmd
cmds.append(s.read(n))
# increase the count by n
count += n
elif current_byte == 76:
# op_pushdata1
data_length = little_endian_to_int(s.read(1))
cmds.append(s.read(data_length))
count += data_length + 1
elif current_byte == 77:
# op_pushdata2
data_length = little_endian_to_int(s.read(2))
cmds.append(s.read(data_length))
count += data_length + 2
else:
# we have an opcode. set the current byte to op_code
op_code = current_byte
# add the op_code to the list of cmds
cmds.append(op_code)
if count != length:
raise SyntaxError('parsing script failed')
return cls(cmds)
def parse(cls, s, testnet = False):
magic = s.read(4)
if magic == b'':
raise IOError('Connection reset!')
if testnet:
expected_magic = TESTNET_NETWORK_MAGIC
else:
expected_magic = NETWORK_MAGIC
if magic != expected_magic:
raise SyntaxError('magic is not right {} vs {}'.format(magic.hex(), expected_magic.hex()))
command = s.read(12)
command = command.strip(b'\x00')
payload_length = little_endian_to_int(s.read(4))
checksum = s.read(4)
payload = s.read(payload_length)
calculated_checksum = hash256(payload)[:4]
if calculated_checksum != checksum:
raise IOError('checksum does not match')
return cls(command, payload, testnet = testnet)
from helper.helper import hash160, decode_base58, little_endian_to_int, hash256, int_to_little_endian
from Scripts.Script import p2pkh_script, p2sh_script, atomic_swap_output_script
from Transaction.Tx import Tx, TxIn, TxOut
import requests
import json
from crypto.Signature import PrivateKey
from Transaction.Tx import TxFetcher
from AtomicSwap.bob import bob_addr_btc
import time
from AtomicSwap.util import broadcast_tx
alice_secret_atomic_swap = "thisIsASecretPassword123".encode('utf-8')
len_alice_secret = len(alice_secret_atomic_swap)
print("Alice's secret is: ", alice_secret_atomic_swap)
alice_secret = little_endian_to_int(hash256(b'Alice'))
alice_private_key = PrivateKey(secret=alice_secret)
alice_public_key = alice_private_key.point.sec()
alice_addr_btc = 'n4mNGWL1ycLk45xgvEEn8V2uKbnpa7wr93'
fee = int(0.00005 * 100000000)
pay_amount = int(0.001 * 100000000)
lock_time = 3600 + int(time.time())
alice_locktime = lock_time
bob_locktime = lock_time
def hash_of_secret():
return hash160(alice_secret_atomic_swap)
def check_pow(self):
sha = hash256(self.serialize())
proof = little_endian_to_int(sha)
return proof < self.target()
def bits_to_target(bits):
exponent = bits[-1]
coefficient = little_endian_to_int(bits[:-1])
return coefficient * 256 ** (exponent - 3)
from helper.helper import little_endian_to_int, hash256, decode_base58
from crypto.Signature import PrivateKey
secret_Abel = little_endian_to_int(hash256(b'*****@*****.**'))
private_key_Abel = PrivateKey(secret=secret_Abel)
# private_key: cUz2mXMT2jyqdwXuFeZgy71tvF96vnvAmH8KvtsMdzhY2AtrJUJv
addr_Abel = private_key_Abel.point.address(testnet=True)
# my_addr = 'n4kJxHoZC9uTjfYAmeXSnHP9ss6YqiQja8'
h160_Abel = decode_base58(addr_Abel)
print("Abel's private key is: ", private_key_Abel)
print("Abel's address is: ", addr_Abel)
secret_Alice = little_endian_to_int(hash256(b'Alice'))
private_key_Alice = PrivateKey(secret=secret_Alice)
# private_key: cUz2mXMT2jyqdwXuFeZgy71tvF96vnvAmH8KvtsMdzhY2AtrJUJv
addr_Alice = private_key_Alice.point.address(testnet=True)
# my_addr = 'n4kJxHoZC9uTjfYAmeXSnHP9ss6YqiQja8'
h160_Alice = decode_base58(addr_Alice)
print("Alice's private key is: ", private_key_Alice)
print("Alice's address is: ", addr_Alice)
secret_Bob = little_endian_to_int(hash256(b'Bob'))
private_key_Bob = PrivateKey(secret=secret_Bob)
# private_key: cUz2mXMT2jyqdwXuFeZgy71tvF96vnvAmH8KvtsMdzhY2AtrJUJv
addr_Bob = private_key_Bob.point.address(testnet=True)
# my_addr = 'n4kJxHoZC9uTjfYAmeXSnHP9ss6YqiQja8'
h160_Bob = decode_base58(addr_Bob)
print("Bob's private key is: ", private_key_Bob)
print("Bob's address is: ", addr_Bob)
from helper.helper import hash160, decode_base58, little_endian_to_int, hash256
from Scripts.Script import p2pkh_script
from crypto.Signature import PrivateKey
from Transaction.Tx import Tx, TxIn, TxOut
from AtomicSwap.util import broadcast_tx
bob_secret = little_endian_to_int(hash256(b'Bob'))
bob_private_key = PrivateKey(secret=bob_secret)
alice_public_key = bob_private_key.point.sec()
bob_addr_btc = 'mtP5yN9q6bFdiWqwcDJsiobPBVVFdwQTvR'
fee = int(0.00005 * 100000000)
pay_amount = int(0.001 * 100000000)
alice_secret = "thisIsASecretPassword123".encode('utf-8')
len_alice_secret_atomic_swap = len(alice_secret)
def bob_redeem_tx(amount_to_send, alice_tx_id, alice_secret):
txout_h160 = decode_base58(bob_addr_btc) # hash160 of the public key
txout_script = p2pkh_script(txout_h160)
tx_out = TxOut(amount_to_send, txout_script)
tx_in = TxIn(bytes.fromhex(alice_tx_id), 1)
tx_obj = Tx(1, [tx_in], [tx_out], 0, testnet=True)
tx_obj.sign_input_atomic_swap_true_branch(alice_secret, 0, bob_private_key)
if tx_obj.verify():
print('Bob redeem from swap tx (BTC) created successfully!')
return tx_obj
if __name__ == '__main__':
