def bob_swap_tx(txid_to_spend, utxo_index, amount_to_send, hash_of_secret):
txout_script = coinExchangeScript(bob_public_key_BCY, alice_public_key_BCY,
hash_of_secret)
txout = create_txout(amount_to_send, txout_script)
txin_scriptPubKey = P2PKH_scriptPubKey(bob_address_BCY)
txin = create_txin(txid_to_spend, utxo_index)
txin_scriptSig = P2PKH_scriptSig(txin, txout, txin_scriptPubKey,
bob_secret_key_BCY, bob_public_key_BCY)
tx = create_signed_transaction(txin, txout, txin_scriptPubKey,
txin_scriptSig)
print('Bob swap tx (BCY) created successfully!')
return tx, txout_script
def redeem_swap(amount_to_send, alice_swap_tx, txin_scriptPubKey,
alice_secret_x):
txout_script = P2PKH_scriptPubKey(bob_address_BTC)
txout = create_txout(amount_to_send, txout_script)
txin = create_txin(b2x(alice_swap_tx.GetTxid()), 0)
tx = CMutableTransaction([txin], [txout])
bob_signature_BTC = sign_BTC(tx, txin_scriptPubKey)
txin_scriptSig = coinExchangeScriptSig1(bob_signature_BTC, alice_secret_x)
txin.scriptSig = CScript(txin_scriptSig)
VerifyScript(txin.scriptSig, CScript(txin_scriptPubKey), tx, 0,
(SCRIPT_VERIFY_P2SH, ))
print('Bob redeem from swap tx (BTC) created successfully!')
return tx
def return_coins_tx(amount_to_send, last_tx, lock_time):
txin = create_txin(b2x(last_tx.GetTxid()), 0)
txout = create_txout(amount_to_send, P2PKH_scriptPubKey(bob_address_BCY))
tx = CMutableTransaction([txin], [txout], nLockTime=lock_time)
return tx