Function bitcoin_wscript_htlc_offer_ripemd160

bitcoin/script.c:604–649

BOLT #3: * * #### Offered HTLC Outputs * * This output sends funds to either an HTLC-timeout transaction after the * HTLC-timeout or to the remote node using the payment preimage or the * revocation key. The output is a P2WSH, with a witness script (no * option_anchors): * * # To remote node with revocation key * OP_DUP OP_HASH160 OP_EQUAL *

 *  OP_ENDIF
 */
u8 *bitcoin_wscript_htlc_offer_ripemd160(const tal_t *ctx,
					 const struct pubkey *localhtlckey,
					 const struct pubkey *remotehtlckey,
					 const struct ripemd160 *payment_ripemd,
					 const struct pubkey *revocationkey,
					 bool option_anchor_outputs)
{
	u8 *script = tal_arr(ctx, u8, 0);
	struct ripemd160 ripemd;

	add_op(&script, OP_DUP);
	add_op(&script, OP_HASH160);
	pubkey_to_hash160(revocationkey, &ripemd);
	script_push_bytes(&script, &ripemd, sizeof(ripemd));
	add_op(&script, OP_EQUAL);
	add_op(&script, OP_IF);
	add_op(&script, OP_CHECKSIG);
	add_op(&script, OP_ELSE);
	add_push_key(&script, remotehtlckey);
	add_op(&script, OP_SWAP);
	add_op(&script, OP_SIZE);
	add_number(&script, 32);
	add_op(&script, OP_EQUAL);
	add_op(&script, OP_NOTIF);
	add_op(&script, OP_DROP);
	add_number(&script, 2);
	add_op(&script, OP_SWAP);
	add_push_key(&script, localhtlckey);
	add_number(&script, 2);
	add_op(&script, OP_CHECKMULTISIG);
	add_op(&script, OP_ELSE);
	add_op(&script, OP_HASH160);
	script_push_bytes(&script,
			  payment_ripemd->u.u8, sizeof(payment_ripemd->u.u8));
	add_op(&script, OP_EQUALVERIFY);
	add_op(&script, OP_CHECKSIG);
	add_op(&script, OP_ENDIF);
	if (option_anchor_outputs) {
		add_number(&script, 1);
		add_op(&script, OP_CHECKSEQUENCEVERIFY);
		add_op(&script, OP_DROP);
	}
	add_op(&script, OP_ENDIF);

	return script;
}

u8 *bitcoin_wscript_htlc_offer(const tal_t *ctx,
			       const struct pubkey *localhtlckey,