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This is prep work for when we sign htlc txs with SIGHASH_SINGLE|SIGHASH_ANYONECANPAY. We still deal with raw signatures for the htlc txs at the moment, since we send them like that across the wire, and changing that was simply too painful (for the moment?). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
154 lines
5.6 KiB
C
154 lines
5.6 KiB
C
#ifndef LIGHTNING_BITCOIN_SCRIPT_H
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#define LIGHTNING_BITCOIN_SCRIPT_H
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#include "config.h"
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#include "signature.h"
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#include "tx.h"
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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struct bitcoin_address;
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struct bitcoin_tx_input;
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struct preimage;
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struct pubkey;
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struct sha256;
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struct ripemd160;
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struct rel_locktime;
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struct abs_locktime;
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/* tal_count() gives the length of the script. */
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u8 *bitcoin_redeem_2of2(const tal_t *ctx,
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const struct pubkey *key1,
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const struct pubkey *key2);
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/* Create an output script using p2sh for this redeem script. */
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u8 *scriptpubkey_p2sh(const tal_t *ctx, const u8 *redeemscript);
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/* Create an output script using p2sh for this hash. */
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u8 *scriptpubkey_p2sh_hash(const tal_t *ctx, const struct ripemd160 *redeemhash);
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/* Create an output script using p2pkh */
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u8 *scriptpubkey_p2pkh(const tal_t *ctx, const struct bitcoin_address *addr);
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/* Create a prunable output script */
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u8 *scriptpubkey_opreturn(const tal_t *ctx);
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/* Create an input script which spends p2pkh */
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u8 *bitcoin_redeem_p2pkh(const tal_t *ctx, const struct pubkey *pubkey,
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const struct bitcoin_signature *sig);
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/* Create the redeemscript for a P2SH + P2WPKH. */
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u8 *bitcoin_redeem_p2sh_p2wpkh(const tal_t *ctx, const struct pubkey *key);
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/* Create scriptsig for p2sh-p2wpkh */
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u8 *bitcoin_scriptsig_p2sh_p2wpkh(const tal_t *ctx, const struct pubkey *key);
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/* Create scriptcode (fake witness, basically) for P2WPKH */
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u8 *p2wpkh_scriptcode(const tal_t *ctx, const struct pubkey *key);
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/* Create an output script for a 32-byte witness program. */
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u8 *scriptpubkey_p2wsh(const tal_t *ctx, const u8 *witnessscript);
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/* Create an output script for a 20-byte witness program. */
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u8 *scriptpubkey_p2wpkh(const tal_t *ctx, const struct pubkey *key);
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/* Same as above, but compressed key is already DER-encoded. */
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u8 *scriptpubkey_p2wpkh_derkey(const tal_t *ctx, const u8 der[33]);
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/* Encode an arbitrary witness as <version> <push:wprog> */
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u8 *scriptpubkey_witness_raw(const tal_t *ctx, u8 version,
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const u8 *wprog, size_t wprog_size);
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/* Create a witness which spends the 2of2. */
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u8 **bitcoin_witness_2of2(const tal_t *ctx,
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const struct bitcoin_signature *sig1,
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const struct bitcoin_signature *sig2,
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const struct pubkey *key1,
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const struct pubkey *key2);
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/* Create a witness which spends a p2wpkh. */
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u8 **bitcoin_witness_p2wpkh(const tal_t *ctx,
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const struct bitcoin_signature *sig,
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const struct pubkey *key);
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/* Create a witness which contains sig, another entry, and the witnessscript */
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u8 **bitcoin_witness_sig_and_element(const tal_t *ctx,
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const struct bitcoin_signature *sig,
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const void *elem, size_t elemsize,
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const u8 *witnessscript);
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/* BOLT #3 to-local output */
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u8 *bitcoin_wscript_to_local(const tal_t *ctx,
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u16 to_self_delay,
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const struct pubkey *revocation_pubkey,
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const struct pubkey *local_delayedkey);
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/* BOLT #3 offered/accepted HTLC outputs */
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u8 *bitcoin_wscript_htlc_offer(const tal_t *ctx,
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const struct pubkey *localhtlckey,
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const struct pubkey *remotehtlckey,
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const struct sha256 *payment_hash,
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const struct pubkey *revocationkey);
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u8 **bitcoin_witness_htlc_timeout_tx(const tal_t *ctx,
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const struct bitcoin_signature *localsig,
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const struct bitcoin_signature *remotesig,
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const u8 *wscript);
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u8 *bitcoin_wscript_htlc_receive(const tal_t *ctx,
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const struct abs_locktime *htlc_abstimeout,
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const struct pubkey *localkey,
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const struct pubkey *remotekey,
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const struct sha256 *payment_hash,
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const struct pubkey *revocationkey);
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u8 **bitcoin_witness_htlc_success_tx(const tal_t *ctx,
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const struct bitcoin_signature *localsig,
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const struct bitcoin_signature *remotesig,
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const struct preimage *preimage,
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const u8 *wscript);
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/* Underlying functions for penalties, where we only keep ripemd160 */
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u8 *bitcoin_wscript_htlc_offer_ripemd160(const tal_t *ctx,
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const struct pubkey *localhtlckey,
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const struct pubkey *remotehtlckey,
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const struct ripemd160 *payment_ripemd,
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const struct pubkey *revocationkey);
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u8 *bitcoin_wscript_htlc_receive_ripemd(const tal_t *ctx,
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const struct abs_locktime *htlc_abstimeout,
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const struct pubkey *localkey,
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const struct pubkey *remotekey,
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const struct ripemd160 *payment_ripemd,
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const struct pubkey *revocationkey);
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/* BOLT #3 HTLC-success/HTLC-timeout output */
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u8 *bitcoin_wscript_htlc_tx(const tal_t *ctx,
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u16 to_self_delay,
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const struct pubkey *revocation_pubkey,
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const struct pubkey *local_delayedkey);
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/* Is this a pay to pubkey hash? (extract addr if not NULL) */
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bool is_p2pkh(const u8 *script, struct bitcoin_address *addr);
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/* Is this a pay to script hash? (extract addr if not NULL) */
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bool is_p2sh(const u8 *script, struct ripemd160 *addr);
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/* Is this (version 0) pay to witness script hash? (extract addr if not NULL) */
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bool is_p2wsh(const u8 *script, struct sha256 *addr);
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/* Is this (version 0) pay to witness pubkey hash? (extract addr if not NULL) */
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bool is_p2wpkh(const u8 *script, struct bitcoin_address *addr);
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/* Are these two scripts equal? */
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bool scripteq(const u8 *s1, const u8 *s2);
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/* OP_DUP + OP_HASH160 + PUSH(20-byte-hash) + OP_EQUALVERIFY + OP_CHECKSIG */
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#define BITCOIN_SCRIPTPUBKEY_P2PKH_LEN (1 + 1 + 1 + 20 + 1 + 1)
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/* OP_HASH160 + PUSH(20-byte-hash) + OP_EQUAL */
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#define BITCOIN_SCRIPTPUBKEY_P2SH_LEN (1 + 1 + 20 + 1)
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/* OP_0 + PUSH(20-byte-hash) */
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#define BITCOIN_SCRIPTPUBKEY_P2WPKH_LEN (1 + 1 + 20)
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/* OP_0 + PUSH(32-byte-hash) */
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#define BITCOIN_SCRIPTPUBKEY_P2WSH_LEN (1 + 1 + 32)
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#endif /* LIGHTNING_BITCOIN_SCRIPT_H */
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