def test_key_derivation(self):
# BOLT3, Appendix E
base_secret = 0x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
per_commitment_secret = 0x1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100
revocation_basepoint_secret = 0x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
base_point = secret_to_pubkey(base_secret)
self.assertEqual(
base_point,
bfh('036d6caac248af96f6afa7f904f550253a0f3ef3f5aa2fe6838a95b216691468e2'
))
per_commitment_point = secret_to_pubkey(per_commitment_secret)
self.assertEqual(
per_commitment_point,
bfh('025f7117a78150fe2ef97db7cfc83bd57b2e2c0d0dd25eaf467a4a1c2a45ce1486'
))
localpubkey = derive_pubkey(base_point, per_commitment_point)
self.assertEqual(
localpubkey,
bfh('0235f2dbfaa89b57ec7b055afe29849ef7ddfeb1cefdb9ebdc43f5494984db29e5'
))
localprivkey = derive_privkey(base_secret, per_commitment_point)
self.assertEqual(
localprivkey,
0xcbced912d3b21bf196a766651e436aff192362621ce317704ea2f75d87e7be0f)
revocation_basepoint = secret_to_pubkey(revocation_basepoint_secret)
self.assertEqual(
revocation_basepoint,
bfh('036d6caac248af96f6afa7f904f550253a0f3ef3f5aa2fe6838a95b216691468e2'
))
revocationpubkey = derive_blinded_pubkey(revocation_basepoint,
per_commitment_point)
self.assertEqual(
revocationpubkey,
bfh('02916e326636d19c33f13e8c0c3a03dd157f332f3e99c317c141dd865eb01f8ff0'
))
def create_test_channels(*, feerate=6000, local_msat=None, remote_msat=None,
alice_name="alice", bob_name="bob",
alice_pubkey=b"\x01"*33, bob_pubkey=b"\x02"*33, random_seed=None):
if random_seed is None: # needed for deterministic randomness
random_seed = os.urandom(32)
random_gen = PRNG(random_seed)
funding_txid = binascii.hexlify(random_gen.get_bytes(32)).decode("ascii")
funding_index = 0
funding_sat = ((local_msat + remote_msat) // 1000) if local_msat is not None and remote_msat is not None else (bitcoin.COIN * 10)
local_amount = local_msat if local_msat is not None else (funding_sat * 1000 // 2)
remote_amount = remote_msat if remote_msat is not None else (funding_sat * 1000 // 2)
alice_raw = [bip32("m/" + str(i)) for i in range(5)]
bob_raw = [bip32("m/" + str(i)) for i in range(5,11)]
alice_privkeys = [lnutil.Keypair(lnutil.privkey_to_pubkey(x), x) for x in alice_raw]
bob_privkeys = [lnutil.Keypair(lnutil.privkey_to_pubkey(x), x) for x in bob_raw]
alice_pubkeys = [lnutil.OnlyPubkeyKeypair(x.pubkey) for x in alice_privkeys]
bob_pubkeys = [lnutil.OnlyPubkeyKeypair(x.pubkey) for x in bob_privkeys]
alice_seed = random_gen.get_bytes(32)
bob_seed = random_gen.get_bytes(32)
alice_first = lnutil.secret_to_pubkey(
int.from_bytes(lnutil.get_per_commitment_secret_from_seed(
alice_seed, lnutil.RevocationStore.START_INDEX), "big"))
bob_first = lnutil.secret_to_pubkey(
int.from_bytes(lnutil.get_per_commitment_secret_from_seed(
bob_seed, lnutil.RevocationStore.START_INDEX), "big"))
alice, bob = (
lnchannel.Channel(
create_channel_state(
funding_txid, funding_index, funding_sat, True, local_amount,
remote_amount, alice_privkeys, bob_pubkeys, alice_seed, None,
bob_first, other_node_id=bob_pubkey, l_dust=200, r_dust=1300,
l_csv=5, r_csv=4
),
name=f"{alice_name}->{bob_name}",
initial_feerate=feerate),
lnchannel.Channel(
create_channel_state(
funding_txid, funding_index, funding_sat, False, remote_amount,
local_amount, bob_privkeys, alice_pubkeys, bob_seed, None,
alice_first, other_node_id=alice_pubkey, l_dust=1300, r_dust=200,
l_csv=4, r_csv=5
),
name=f"{bob_name}->{alice_name}",
initial_feerate=feerate)
)
alice.hm.log[LOCAL]['ctn'] = 0
bob.hm.log[LOCAL]['ctn'] = 0
alice._state = ChannelState.OPEN
bob._state = ChannelState.OPEN
a_out = alice.get_latest_commitment(LOCAL).outputs()
b_out = bob.get_next_commitment(REMOTE).outputs()
assert a_out == b_out, "\n" + pformat((a_out, b_out))
sig_from_bob, a_htlc_sigs = bob.sign_next_commitment()
sig_from_alice, b_htlc_sigs = alice.sign_next_commitment()
assert len(a_htlc_sigs) == 0
assert len(b_htlc_sigs) == 0
alice.open_with_first_pcp(bob_first, sig_from_bob)
bob.open_with_first_pcp(alice_first, sig_from_alice)
alice_second = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(alice_seed, lnutil.RevocationStore.START_INDEX - 1), "big"))
bob_second = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(bob_seed, lnutil.RevocationStore.START_INDEX - 1), "big"))
# from funding_locked:
alice.config[REMOTE].next_per_commitment_point = bob_second
bob.config[REMOTE].next_per_commitment_point = alice_second
alice._fallback_sweep_address = bitcoin.pubkey_to_address('p2wpkh', alice.config[LOCAL].payment_basepoint.pubkey.hex())
bob._fallback_sweep_address = bitcoin.pubkey_to_address('p2wpkh', bob.config[LOCAL].payment_basepoint.pubkey.hex())
return alice, bob
def create_test_channels(feerate=6000, local=None, remote=None):
funding_txid = binascii.hexlify(b"\x01" * 32).decode("ascii")
funding_index = 0
funding_sat = ((local + remote) //
1000) if local is not None and remote is not None else (
bitcoin.COIN * 10)
local_amount = local if local is not None else (funding_sat * 1000 // 2)
remote_amount = remote if remote is not None else (funding_sat * 1000 // 2)
alice_raw = [bip32("m/" + str(i)) for i in range(5)]
bob_raw = [bip32("m/" + str(i)) for i in range(5, 11)]
alice_privkeys = [
lnutil.Keypair(lnutil.privkey_to_pubkey(x), x) for x in alice_raw
]
bob_privkeys = [
lnutil.Keypair(lnutil.privkey_to_pubkey(x), x) for x in bob_raw
]
alice_pubkeys = [
lnutil.OnlyPubkeyKeypair(x.pubkey) for x in alice_privkeys
]
bob_pubkeys = [lnutil.OnlyPubkeyKeypair(x.pubkey) for x in bob_privkeys]
alice_seed = b"\x01" * 32
bob_seed = b"\x02" * 32
alice_first = lnutil.secret_to_pubkey(
int.from_bytes(
lnutil.get_per_commitment_secret_from_seed(
alice_seed, lnutil.RevocationStore.START_INDEX), "big"))
bob_first = lnutil.secret_to_pubkey(
int.from_bytes(
lnutil.get_per_commitment_secret_from_seed(
bob_seed, lnutil.RevocationStore.START_INDEX), "big"))
alice, bob = (lnchannel.Channel(create_channel_state(funding_txid,
funding_index,
funding_sat,
True,
local_amount,
remote_amount,
alice_privkeys,
bob_pubkeys,
alice_seed,
None,
bob_first,
b"\x02" * 33,
l_dust=200,
r_dust=1300,
l_csv=5,
r_csv=4),
name="alice",
initial_feerate=feerate),
lnchannel.Channel(create_channel_state(funding_txid,
funding_index,
funding_sat,
False,
remote_amount,
local_amount,
bob_privkeys,
alice_pubkeys,
bob_seed,
None,
alice_first,
b"\x01" * 33,
l_dust=1300,
r_dust=200,
l_csv=4,
r_csv=5),
name="bob",
initial_feerate=feerate))
alice.hm.log[LOCAL]['ctn'] = 0
bob.hm.log[LOCAL]['ctn'] = 0
alice.set_state('OPEN')
bob.set_state('OPEN')
a_out = alice.get_latest_commitment(LOCAL).outputs()
b_out = bob.get_next_commitment(REMOTE).outputs()
assert a_out == b_out, "\n" + pformat((a_out, b_out))
sig_from_bob, a_htlc_sigs = bob.sign_next_commitment()
sig_from_alice, b_htlc_sigs = alice.sign_next_commitment()
assert len(a_htlc_sigs) == 0
assert len(b_htlc_sigs) == 0
alice.config[LOCAL] = alice.config[LOCAL]._replace(
current_commitment_signature=sig_from_bob)
bob.config[LOCAL] = bob.config[LOCAL]._replace(
current_commitment_signature=sig_from_alice)
alice_second = lnutil.secret_to_pubkey(
int.from_bytes(
lnutil.get_per_commitment_secret_from_seed(
alice_seed, lnutil.RevocationStore.START_INDEX - 1), "big"))
bob_second = lnutil.secret_to_pubkey(
int.from_bytes(
lnutil.get_per_commitment_secret_from_seed(
bob_seed, lnutil.RevocationStore.START_INDEX - 1), "big"))
alice.config[REMOTE] = alice.config[REMOTE]._replace(
next_per_commitment_point=bob_second,
current_per_commitment_point=bob_first)
bob.config[REMOTE] = bob.config[REMOTE]._replace(
next_per_commitment_point=alice_second,
current_per_commitment_point=alice_first)
alice.hm.channel_open_finished()
bob.hm.channel_open_finished()
return alice, bob
def test_commitment_tx_with_all_five_HTLCs_untrimmed_minimum_feerate(self):
to_local_msat = 6988000000
to_remote_msat = 3000000000
local_feerate_per_kw = 0
# base commitment transaction fee = 0
# actual commitment transaction fee = 0
per_commitment_secret = 0x1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100
per_commitment_point = secret_to_pubkey(per_commitment_secret)
remote_htlcpubkey = remotepubkey
local_htlcpubkey = localpubkey
htlc_cltv_timeout = {}
htlc_payment_preimage = {}
htlc = {}
htlc_cltv_timeout[2] = 502
htlc_payment_preimage[2] = b"\x02" * 32
htlc[2] = make_offered_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[2]))
htlc_cltv_timeout[3] = 503
htlc_payment_preimage[3] = b"\x03" * 32
htlc[3] = make_offered_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[3]))
htlc_cltv_timeout[0] = 500
htlc_payment_preimage[0] = b"\x00" * 32
htlc[0] = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[0]), htlc_cltv_timeout[0])
htlc_cltv_timeout[1] = 501
htlc_payment_preimage[1] = b"\x01" * 32
htlc[1] = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[1]), htlc_cltv_timeout[1])
htlc_cltv_timeout[4] = 504
htlc_payment_preimage[4] = b"\x04" * 32
htlc[4] = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, bitcoin.sha256(htlc_payment_preimage[4]), htlc_cltv_timeout[4])
remote_signature = "304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b70606"
output_commit_tx = "02000000000101bef67e4e2fb9ddeeb3461973cd4c62abb35050b1add772995b820b584a488489000000000038b02b8007e80300000000000022002052bfef0479d7b293c27e0f1eb294bea154c63a3294ef092c19af51409bce0e2ad007000000000000220020403d394747cae42e98ff01734ad5c08f82ba123d3d9a620abda88989651e2ab5d007000000000000220020748eba944fedc8827f6b06bc44678f93c0f9e6078b35c6331ed31e75f8ce0c2db80b000000000000220020c20b5d1f8584fd90443e7b7b720136174fa4b9333c261d04dbbd012635c0f419a00f0000000000002200208c48d15160397c9731df9bc3b236656efb6665fbfe92b4a6878e88a499f741c4c0c62d0000000000160014ccf1af2f2aabee14bb40fa3851ab2301de843110e0a06a00000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e04004730440220275b0c325a5e9355650dc30c0eccfbc7efb23987c24b556b9dfdd40effca18d202206caceb2c067836c51f296740c7ae807ffcbfbf1dd3a0d56b6de9a5b247985f060147304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b7060601475221023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb21030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c152ae3e195220"
htlc_obj = {}
for num, msat in [(0, 1000 * 1000),
(2, 2000 * 1000),
(1, 2000 * 1000),
(3, 3000 * 1000),
(4, 4000 * 1000)]:
htlc_obj[num] = UpdateAddHtlc(amount_msat=msat, payment_hash=bitcoin.sha256(htlc_payment_preimage[num]), cltv_expiry=0, htlc_id=None, timestamp=0)
htlcs = [ScriptHtlc(htlc[x], htlc_obj[x]) for x in range(5)]
our_commit_tx = make_commitment(
commitment_number,
local_funding_pubkey, remote_funding_pubkey, remotepubkey,
local_payment_basepoint, remote_payment_basepoint,
local_revocation_pubkey, local_delayedpubkey, local_delay,
funding_tx_id, funding_output_index, funding_amount_satoshi,
to_local_msat, to_remote_msat, local_dust_limit_satoshi,
calc_onchain_fees(len(htlcs), local_feerate_per_kw, True), htlcs=htlcs)
self.sign_and_insert_remote_sig(our_commit_tx, remote_funding_pubkey, remote_signature, local_funding_pubkey, local_funding_privkey)
self.assertEqual(str(our_commit_tx), output_commit_tx)
signature_for_output_remote_htlc = {}
signature_for_output_remote_htlc[0] = "304402206a6e59f18764a5bf8d4fa45eebc591566689441229c918b480fb2af8cc6a4aeb02205248f273be447684b33e3c8d1d85a8e0ca9fa0bae9ae33f0527ada9c162919a6"
signature_for_output_remote_htlc[2] = "3045022100d5275b3619953cb0c3b5aa577f04bc512380e60fa551762ce3d7a1bb7401cff9022037237ab0dac3fe100cde094e82e2bed9ba0ed1bb40154b48e56aa70f259e608b"
signature_for_output_remote_htlc[1] = "304402201b63ec807771baf4fdff523c644080de17f1da478989308ad13a58b51db91d360220568939d38c9ce295adba15665fa68f51d967e8ed14a007b751540a80b325f202"
signature_for_output_remote_htlc[3] = "3045022100daee1808f9861b6c3ecd14f7b707eca02dd6bdfc714ba2f33bc8cdba507bb182022026654bf8863af77d74f51f4e0b62d461a019561bb12acb120d3f7195d148a554"
signature_for_output_remote_htlc[4] = "304402207e0410e45454b0978a623f36a10626ef17b27d9ad44e2760f98cfa3efb37924f0220220bd8acd43ecaa916a80bd4f919c495a2c58982ce7c8625153f8596692a801d"
output_htlc_tx = {}
SUCCESS = True
TIMEOUT = False
output_htlc_tx[0] = (SUCCESS, "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")
output_htlc_tx[2] = (TIMEOUT, "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")
output_htlc_tx[1] = (SUCCESS, "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")
output_htlc_tx[3] = (TIMEOUT, "020000000001018154ecccf11a5fb56c39654c4deb4d2296f83c69268280b94d021370c94e219703000000000000000001b80b0000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e0500483045022100daee1808f9861b6c3ecd14f7b707eca02dd6bdfc714ba2f33bc8cdba507bb182022026654bf8863af77d74f51f4e0b62d461a019561bb12acb120d3f7195d148a554014730440220643aacb19bbb72bd2b635bc3f7375481f5981bace78cdd8319b2988ffcc6704202203d27784ec8ad51ed3bd517a05525a5139bb0b755dd719e0054332d186ac0872701008576a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a9148a486ff2e31d6158bf39e2608864d63fefd09d5b88ac6868f7010000")
output_htlc_tx[4] = (SUCCESS, "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")
htlc_output_index = {0: 0, 1: 2, 2: 1, 3: 3, 4: 4}
for i in range(5):
self.assertEqual(output_htlc_tx[i][1], self.htlc_tx(htlc[i], htlc_output_index[i],
htlcs[i].htlc.amount_msat,
htlc_payment_preimage[i],
signature_for_output_remote_htlc[i],
output_htlc_tx[i][0], htlc_cltv_timeout[i] if not output_htlc_tx[i][0] else 0,
local_feerate_per_kw,
our_commit_tx))