electrum

Electrum Bitcoin wallet
git clone https://git.parazyd.org/electrum
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commit fa86dda9831be68ef92de7f44436b1c630acd31b
parent 6ba846bff02a6ff8d796d6ca4d67337c4451b83d
Author: Janus <ysangkok@gmail.com>
Date:   Tue, 17 Apr 2018 09:33:12 +0200

lnbase: make_received_htlc

Diffstat:
Mlib/lnbase.py | 24++++++++++++++++++++++++
Mlib/tests/test_lnbase.py | 24++++++++++++++++++++----
2 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/lib/lnbase.py b/lib/lnbase.py @@ -275,6 +275,30 @@ def make_offered_htlc(revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, pa + bytes([opcodes.OP_CHECKMULTISIG, opcodes.OP_ELSE, opcodes.OP_HASH160])\ + bfh(push_script(bh2u(bitcoin.ripemd(payment_hash)))) + bytes([opcodes.OP_EQUALVERIFY, opcodes.OP_CHECKSIG, opcodes.OP_ENDIF, opcodes.OP_ENDIF]) +def make_received_htlc(revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, payment_preimage, cltv_expiry): + for i in [revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, payment_preimage]: + assert type(i) is bytes + assert type(cltv_expiry) is int + + payment_hash = bitcoin.sha256(payment_preimage) + return bytes([opcodes.OP_DUP, opcodes.OP_HASH160]) \ + + bfh(push_script(bh2u(bitcoin.hash_160(revocation_pubkey)))) \ + + bytes([opcodes.OP_EQUAL, opcodes.OP_IF, opcodes.OP_CHECKSIG, opcodes.OP_ELSE]) \ + + bfh(push_script(bh2u(remote_htlcpubkey))) \ + + bytes([opcodes.OP_SWAP, opcodes.OP_SIZE]) \ + + bitcoin.add_number_to_script(32) \ + + bytes([opcodes.OP_EQUAL, opcodes.OP_IF, opcodes.OP_HASH160]) \ + + bfh(push_script(bh2u(bitcoin.ripemd(payment_hash)))) \ + + bytes([opcodes.OP_EQUALVERIFY]) \ + + bitcoin.add_number_to_script(2) \ + + bytes([opcodes.OP_SWAP]) \ + + bfh(push_script(bh2u(local_htlcpubkey))) \ + + bitcoin.add_number_to_script(2) \ + + bytes([opcodes.OP_CHECKMULTISIG, opcodes.OP_ELSE, opcodes.OP_DROP]) \ + + bitcoin.add_number_to_script(cltv_expiry) \ + + bytes([opcodes.OP_CLTV, opcodes.OP_DROP, opcodes.OP_CHECKSIG, opcodes.OP_ENDIF, opcodes.OP_ENDIF]) + + def make_commitment(ctn, local_funding_pubkey, remote_funding_pubkey, remotepubkey, payment_pubkey, remote_payment_pubkey, revocation_pubkey, delayed_pubkey, funding_txid, funding_pos, funding_satoshis, diff --git a/lib/tests/test_lnbase.py b/lib/tests/test_lnbase.py @@ -1,7 +1,7 @@ import json import unittest from lib.util import bh2u, bfh -from lib.lnbase import make_commitment, get_obscured_ctn, Peer, make_offered_htlc +from lib.lnbase import make_commitment, get_obscured_ctn, Peer, make_offered_htlc, make_received_htlc from lib.transaction import Transaction from lib import bitcoin import ecdsa.ellipticcurve @@ -67,27 +67,43 @@ class Test_LNBase(unittest.TestCase): remote_htlcpubkey = remotepubkey local_htlcpubkey = localpubkey + htlc2_payment_preimage = b"\x02" * 32 htlc2 = make_offered_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, htlc2_payment_preimage) - # HTLC 2 offered amount 2000 # wscript ref_htlc2_wscript = "76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a914b43e1b38138a41b37f7cd9a1d274bc63e3a9b5d188ac6868" + self.assertEqual(htlc2, bfh(ref_htlc2_wscript)) - self.assertEqual(htlc2, bfh(ref_htlc2_wscript)) # TODO comparison fails on payment_hash - + htlc3_payment_preimage = b"\x03" * 32 + htlc3 = make_offered_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, htlc3_payment_preimage) # HTLC 3 offered amount 3000 # wscript ref_htlc3_wscript = "76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a9148a486ff2e31d6158bf39e2608864d63fefd09d5b88ac6868" + self.assertEqual(htlc3, bfh(ref_htlc3_wscript)) + + htlc0_payment_preimage = b"\x00" * 32 + htlc0 = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, htlc0_payment_preimage, 500) # HTLC 0 received amount 1000 # wscript ref_htlc0_wscript = "76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a914b8bcb07f6344b42ab04250c86a6e8b75d3fdbbc688527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f401b175ac6868" + self.assertEqual(htlc0, bfh(ref_htlc0_wscript)) + + htlc1_cltv_expiry = 501 + htlc1_payment_preimage = b"\x01" * 32 + htlc1 = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, htlc1_payment_preimage, htlc1_cltv_expiry) # HTLC 1 received amount 2000 # wscript ref_htlc1_wscript = "76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a9144b6b2e5444c2639cc0fb7bcea5afba3f3cdce23988527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f501b175ac6868" + self.assertEqual(htlc1, bfh(ref_htlc1_wscript)) + + htlc4_payment_preimage = b"\x04" * 32 + htlc4 = make_received_htlc(local_revocation_pubkey, remote_htlcpubkey, local_htlcpubkey, htlc4_payment_preimage, 504) # HTLC 4 received amount 4000 # wscript ref_htlc4_wscript = "76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a91418bc1a114ccf9c052d3d23e28d3b0a9d1227434288527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f801b175ac6868" + self.assertEqual(htlc4, bfh(ref_htlc4_wscript)) + # to_local amount 6988000 wscript 63210212a140cd0c6539d07cd08dfe09984dec3251ea808b892efeac3ede9402bf2b1967029000b2752103fd5960528dc152014952efdb702a88f71e3c1653b2314431701ec77e57fde83c68ac # to_remote amount 3000000 P2WPKH(0394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b) remote_signature = "304402204fd4928835db1ccdfc40f5c78ce9bd65249b16348df81f0c44328dcdefc97d630220194d3869c38bc732dd87d13d2958015e2fc16829e74cd4377f84d215c0b70606"