You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.8 KiB
88 lines
2.8 KiB
#ifndef LIGHTNING_COMMON_HTLC_TX_H
|
|
#define LIGHTNING_COMMON_HTLC_TX_H
|
|
#include "config.h"
|
|
#include <common/htlc.h>
|
|
|
|
struct keyset;
|
|
struct preimage;
|
|
struct pubkey;
|
|
|
|
static inline u64 htlc_timeout_fee(u32 feerate_per_kw)
|
|
{
|
|
/* BOLT #3:
|
|
*
|
|
* The fee for an HTLC-timeout transaction:
|
|
* - MUST BE calculated to match:
|
|
* 1. Multiply `feerate_per_kw` by 663 and divide by 1000 (rounding
|
|
* down).
|
|
*/
|
|
return feerate_per_kw * 663ULL / 1000;
|
|
}
|
|
|
|
static inline u64 htlc_success_fee(u32 feerate_per_kw)
|
|
{
|
|
/* BOLT #3:
|
|
*
|
|
* The fee for an HTLC-success transaction:
|
|
* - MUST BE calculated to match:
|
|
* 1. Multiply `feerate_per_kw` by 703 and divide by 1000 (rounding
|
|
* down).
|
|
*/
|
|
return feerate_per_kw * 703ULL / 1000;
|
|
}
|
|
|
|
/* Create HTLC-success tx to spend a received HTLC commitment tx
|
|
* output; doesn't fill in input witness. */
|
|
struct bitcoin_tx *htlc_success_tx(const tal_t *ctx,
|
|
const struct bitcoin_txid *commit_txid,
|
|
unsigned int commit_output_number,
|
|
u64 htlc_msatoshi,
|
|
u16 to_self_delay,
|
|
u32 feerate_per_kw,
|
|
const struct keyset *keyset);
|
|
|
|
/* Fill in the witness for HTLC-success tx produced above. */
|
|
void htlc_success_tx_add_witness(struct bitcoin_tx *htlc_success,
|
|
const struct abs_locktime *htlc_abstimeout,
|
|
const struct pubkey *localkey,
|
|
const struct pubkey *remotekey,
|
|
const secp256k1_ecdsa_signature *localsig,
|
|
const secp256k1_ecdsa_signature *remotesig,
|
|
const struct preimage *payment_preimage,
|
|
const struct pubkey *revocationkey);
|
|
|
|
/* Create HTLC-timeout tx to spend an offered HTLC commitment tx
|
|
* output; doesn't fill in input witness. */
|
|
struct bitcoin_tx *htlc_timeout_tx(const tal_t *ctx,
|
|
const struct bitcoin_txid *commit_txid,
|
|
unsigned int commit_output_number,
|
|
u64 htlc_msatoshi,
|
|
u32 cltv_expiry,
|
|
u16 to_self_delay,
|
|
u32 feerate_per_kw,
|
|
const struct keyset *keyset);
|
|
|
|
/* Fill in the witness for HTLC-timeout tx produced above. */
|
|
void htlc_timeout_tx_add_witness(struct bitcoin_tx *htlc_timeout,
|
|
const struct pubkey *localkey,
|
|
const struct pubkey *remotekey,
|
|
const struct sha256 *payment_hash,
|
|
const struct pubkey *revocationkey,
|
|
const secp256k1_ecdsa_signature *localsig,
|
|
const secp256k1_ecdsa_signature *remotesig);
|
|
|
|
|
|
/* Generate the witness script for an HTLC the other side offered:
|
|
* scriptpubkey_p2wsh(ctx, wscript) gives the scriptpubkey */
|
|
u8 *htlc_received_wscript(const tal_t *ctx,
|
|
const struct ripemd160 *ripemd,
|
|
const struct abs_locktime *expiry,
|
|
const struct keyset *keyset);
|
|
|
|
/* Generate the witness script for an HTLC this side offered:
|
|
* scriptpubkey_p2wsh(ctx, wscript) gives the scriptpubkey */
|
|
u8 *htlc_offered_wscript(const tal_t *ctx,
|
|
const struct ripemd160 *ripemd,
|
|
const struct keyset *keyset);
|
|
|
|
#endif /* LIGHTNING_COMMON_HTLC_TX_H */
|
|
|