def build_transaction(transidsarr, transindexarr, pubeysarr, amountsarr,
privatekey):
tx_ins = buildinputs(transidsarr, transindexarr)
tx_outs = buildoutputs(pubkeysarr, amountsarr)
tx_obj = Tx(version=1,
tx_ins=tx_ins,
tx_outs=tx_outs,
locktime=0,
testnet=True)
hash_type = SIGHASH_ALL
z = tx_obj.sig_hash(0, hash_type)
pk = PrivateKey(secret=privatekey)
sighash = SIGHASH_ALL
z = tx_obj.sig_hash(0, sighash)
#print(z)
sig = pk.sign(z)
#print("r: " + str(sig.r))
#print("s: " + str(sig.s))
der = pk.sign(z).der()
sig = der + bytes([sighash])
sec = pk.point.sec()
tx_obj.tx_ins[0].script_sig = Script([sig, sec])
#print("serialized:")
#print(hexlify(Script([sig,sec]).serialize()))
#print("----------")
return hexlify(tx_obj.serialize())
def test_example_1(self):
tx_ins = []
prev_tx = bytes.fromhex(
'8be2f69037de71e3bc856a6627ed3e222a7a2d0ce81daeeb54a3aea8db274149')
prev_index = 4
tx_ins.append(TxIn(prev_tx, prev_index))
tx_outs = []
h160 = decode_base58('mzx5YhAH9kNHtcN481u6WkjeHjYtVeKVh2')
tx_outs.append(
TxOut(
amount=int(0.38 * 100000000),
script_pubkey=p2pkh_script(h160),
))
h160 = decode_base58('mnrVtF8DWjMu839VW3rBfgYaAfKk8983Xf')
tx_outs.append(
TxOut(
amount=int(0.1 * 100000000),
script_pubkey=p2pkh_script(h160),
))
tx_obj = Tx(1, tx_ins, tx_outs, 0, testnet=True)
z = tx_obj.sig_hash(0)
pk = PrivateKey(secret=8675309)
der = pk.sign(z).der()
sig = der + SIGHASH_ALL.to_bytes(1, 'big')
sec = pk.point.sec()
tx_obj.tx_ins[0].script_sig = Script([sig, sec])
want = '0100000001494127dba8aea354ebae1de80c2d7a2a223eed27666a85bce371de3790f6e28b040000006b483045022100fa3032607b50e8cb05bedc9d43f986f19dedc22e61320b9765061c5cd9c66946022072d514ef637988515bfa59a660596206de68f0ed4090d0a398e70f4d81370dfb012103935581e52c354cd2f484fe8ed83af7a3097005b2f9c60bff71d35bd795f54b67ffffffff0280d54302000000001976a914d52ad7ca9b3d096a38e752c2018e6fbc40cdf26f88ac80969800000000001976a914507b27411ccf7f16f10297de6cef3f291623eddf88ac00000000'
self.assertEqual(tx_obj.serialize().hex(), want)
def test_example_6(self):
tx_ins = []
prev_tx = bytes.fromhex(
'0d6fe5213c0b3291f208cba8bfb59b7476dffacc4e5cb66f6eb20a080843a299')
prev_index = 13
tx_ins.append(TxIn(prev_tx, prev_index, Script([]), 0xffffffff))
tx_outs = []
change_amount = int(0.33 * 100000000)
change_h160 = decode_base58('mzx5YhAH9kNHtcN481u6WkjeHjYtVeKVh2')
change_script = p2pkh_script(change_h160)
tx_outs.append(TxOut(amount=change_amount,
script_pubkey=change_script))
target_amount = int(0.1 * 100000000)
target_h160 = decode_base58('mnrVtF8DWjMu839VW3rBfgYaAfKk8983Xf')
target_script = p2pkh_script(target_h160)
tx_outs.append(TxOut(amount=target_amount,
script_pubkey=target_script))
transaction = Tx(1, tx_ins, tx_outs, 0, testnet=True)
z = transaction.sig_hash(0)
private_key = PrivateKey(secret=8675309)
der = private_key.sign(z).der()
sig = der + SIGHASH_ALL.to_bytes(1, 'big')
sec = private_key.point.sec()
transaction.tx_ins[0].script_sig = Script([sig, sec])
want = '010000000199a24308080ab26e6fb65c4eccfadf76749bb5bfa8cb08f291320b3c21e56f0d0d0000006b4830450221008ed46aa2cf12d6d81065bfabe903670165b538f65ee9a3385e6327d80c66d3b502203124f804410527497329ec4715e18558082d489b218677bd029e7fa306a72236012103935581e52c354cd2f484fe8ed83af7a3097005b2f9c60bff71d35bd795f54b67ffffffff02408af701000000001976a914d52ad7ca9b3d096a38e752c2018e6fbc40cdf26f88ac80969800000000001976a914507b27411ccf7f16f10297de6cef3f291623eddf88ac00000000'
self.assertEqual(transaction.serialize().hex(), want)
def check_htlc(node, commitment_tx, secret):
tx_in = TxIn(bytes.fromhex(commitment_tx.id()), 2)
tx_out = TxOut(amount=commitment_tx.tx_outs[2].amount,
script_pubkey=commitment_tx.tx_outs[0].script_pubkey)
spendingTx = Tx(1, [tx_in], [tx_out], 0, True)
z = spendingTx.sig_hash(0)
signature = node.private_key.sign(z).der() + SIGHASH_ALL.to_bytes(1, 'big')
combined = Script(
[signature, node.public_key.sec(),
str.encode(secret), b'1']) + commitment_tx.tx_outs[2].script_pubkey
return combined.evaluate(z, None)
def build_transaction2(transidsarr,
transindexarr,
pubkeysarr,
amountsarr,
tnet=True):
tx_ins = buildinputs(transidsarr, transindexarr)
print("ins")
print(tx_ins)
tx_outs = buildoutputs(pubkeysarr, amountsarr)
print("pubkeys")
print(pubkeysarr)
print("outs")
print(tx_outs)
tx_obj = Tx(version=1,
tx_ins=tx_ins,
tx_outs=tx_outs,
locktime=0,
testnet=tnet)
#hash_type = SIGHASH_ALL
#z = tx_obj.sig_hash(0, hash_type)
#pk = PrivateKey(secret=privatekey)
for i in range(len(tx_ins)):
sighash = SIGHASH_ALL
z = tx_obj.sig_hash(i, sighash)
#print("getting sign:")
r, s = ardubridge.sign(z)
s = int(s)
others = N - s
if others < s:
s = others
#print("r: " + str(r))
#print("s: " + str(s))
sig = Signature(int(r), s)
der = sig.der()
sig = der + bytes([sighash])
#sec = pk.point.sec()
#print("public point:")
#print(int(pk.point.x.hex(), 16))
#print(int(pk.point.y.hex(), 16))
x, y = ardubridge.getpubkey()
if (x == -1 and y == -1):
return '-1'
#pub = S256Point(53237820045986896539096637357322002537362350769420441605069248472301971758546, 49407176618187043960559197373734381057571970898731550795341045595301080938882)
pub = S256Point(int(x), int(y))
sec2 = pub.sec()
tx_obj.tx_ins[i].script_sig = Script([sig, sec2])
return hexlify(tx_obj.serialize())
# output address that will receive the sat we have not spend
change_h160 = decode_base58('mvEg6eZ3sUApodedYQrkpEPMMALsr1K1k1')
change_script = p2pkh_script(change_h160)
change_output = TxOut(amount=change_amount, script_pubkey=change_script)
# output address that will receive our sat
target_amount = int(0.00006 * 100000000)
target_h160 = decode_base58('mwJn1YPMq7y5F8J3LkC5Hxg9PHyZ5K4cFv')
target_script = p2pkh_script(target_h160)
target_output = TxOut(amount=target_amount, script_pubkey=target_script)
tx_obj = Tx(1, [tx_in], [change_output, target_output], 0, True)
#print(tx_obj).hex()
# now we sign the transaction
z = tx_obj.sig_hash(0)
private_key = PrivateKey(little_endian_to_int(
hash256(b'dat_test_private_key')))
der = private_key.sign(z).der()
sig = der + SIGHASH_ALL.to_bytes(1, 'big')
sec = private_key.point.sec()
script_sig = Script([sig, sec])
tx_obj.tx_ins[0].script_sig = script_sig
print(tx_obj.serialize().hex())
# end
sat_in_bit = 100000000 fee = 0.0001 * sat_in_bit input_amount = tx_input.value(testnet=True) #creating the target output target_amount = int(0.005 * sat_in_bit) target_h160 = decode_base58(sender_address) target_script = p2pkh_script(target_h160) target_output = TxOut(amount=target_amount, script_pubkey=target_script) #creating the change output change_amount = int(input_amount - target_amount - fee) change_160 = decode_base58(receiver_address) change_script = p2pkh_script(change_160) change_output = TxOut(amount=change_amount, script_pubkey=change_script) #create the Tx object tx_obj = Tx(1, [tx_input], [change_output, target_output], 0, True) #signing the transaction z = tx_obj.sig_hash(0) #get sig_hash of the first input der = private_key.sign(z).der() sig = der + SIGHASH_ALL.to_bytes(1, 'big') sec = public_key.sec() script_sig = Script([sig, sec]) tx_obj.tx_ins[0].script_sig = script_sig print(tx_obj.serialize().hex()) print(sender_address) print(receiver_address)
print(len(h160))
print(hexlify(h160))
tx_outs.append(TxOut(
amount=int(t2*.97),
script_pubkey=p2pkh_script(h160),
))
h160 = decode_base58(taddr2)
tx_outs.append(TxOut(
amount=int(t2*.03),
script_pubkey=p2pkh_script(h160),
))
tx_obj = Tx(version=1, tx_ins=tx_ins, tx_outs=tx_outs, locktime=0, testnet=True)
# Step 3
hash_type = SIGHASH_ALL
z = tx_obj.sig_hash(0, hash_type)
pk = PrivateKey(secret=privatekey)
# sign with SIGHASH_ALL
sighash = SIGHASH_ALL
# get the sighash
z = tx_obj.sig_hash(0, sighash)
# sign with priv to get der
der = pk.sign(z).der()
# add the sighash as a single byte bytes([sighash])
sig = der + bytes([sighash])
# get the sec from priv
sec = pk.point.sec()
# create a new script that has sig and sec as the new input sig
tx_obj.tx_ins[0].script_sig = Script([sig, sec])
