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lnbase: make_received_htlc

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This commit is contained in:
Janus
2018-04-17 09:33:12 +02:00
committed by ThomasV
parent 6ba846bff0
commit fa86dda983
2 changed files with 44 additions and 4 deletions
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24
lib/lnbase.py
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@@ -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,