mirrors/core-lightning
1
0
Fork 0
mirror of https://github.com/ElementsProject/lightning.git synced 2024-11-19 09:54:16 +01:00
Code Issues Projects Releases Wiki Activity

hsmd: move HTLC TX signing next to commitment TX signing.

Browse Source 
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2018-09-20 12:36:42 +09:30 committed by Christian Decker
parent 6b6b7eac61
commit f8df069536
1 changed files with 43 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
hsmd/hsmd.c
View File

@ -525,6 +525,49 @@ static struct io_plan *handle_sign_remote_commitment_tx(struct io_conn *conn,
return req_reply(conn, c, take(towire_hsm_sign_tx_reply(NULL, &sig)));
}
static struct io_plan *handle_sign_remote_htlc_tx(struct io_conn *conn,
struct client *c,
const u8 *msg_in)
{
struct secret channel_seed;
struct bitcoin_tx *tx;
secp256k1_ecdsa_signature sig;
struct secrets secrets;
struct basepoints basepoints;
struct pubkey remote_per_commit_point;
u64 amount;
u8 *wscript;
struct privkey htlc_privkey;
struct pubkey htlc_pubkey;
if (!fromwire_hsm_sign_remote_htlc_tx(tmpctx, msg_in,
&tx, &wscript, &amount,
&remote_per_commit_point))
return bad_req(conn, c, msg_in);
get_channel_seed(&c->id, c->dbid, &channel_seed);
derive_basepoints(&channel_seed, NULL, &basepoints, &secrets, NULL);
if (!derive_simple_privkey(&secrets.htlc_basepoint_secret,
&basepoints.htlc,
&remote_per_commit_point,
&htlc_privkey))
return bad_req_fmt(conn, c, msg_in,
"Failed deriving htlc privkey");
if (!derive_simple_key(&basepoints.htlc,
&remote_per_commit_point,
&htlc_pubkey))
return bad_req_fmt(conn, c, msg_in,
"Failed deriving htlc pubkey");
/* Need input amount for signing */
tx->input[0].amount = tal_dup(tx->input, u64, &amount);
sign_tx_input(tx, 0, NULL, wscript, &htlc_privkey, &htlc_pubkey, &sig);
return req_reply(conn, c, take(towire_hsm_sign_tx_reply(NULL, &sig)));
}
/* FIXME: Derive output address for this client, and check it here! */
static struct io_plan *handle_sign_to_us_tx(struct io_conn *conn,
struct client *c,
@ -786,49 +829,6 @@ static struct io_plan *handle_check_future_secret(struct io_conn *conn,
secret_eq_consttime(&secret, &suggested))));
}
static struct io_plan *handle_sign_remote_htlc_tx(struct io_conn *conn,
struct client *c,
const u8 *msg_in)
{
struct secret channel_seed;
struct bitcoin_tx *tx;
secp256k1_ecdsa_signature sig;
struct secrets secrets;
struct basepoints basepoints;
struct pubkey remote_per_commit_point;
u64 amount;
u8 *wscript;
struct privkey htlc_privkey;
struct pubkey htlc_pubkey;
if (!fromwire_hsm_sign_remote_htlc_tx(tmpctx, msg_in,
&tx, &wscript, &amount,
&remote_per_commit_point))
return bad_req(conn, c, msg_in);
get_channel_seed(&c->id, c->dbid, &channel_seed);
derive_basepoints(&channel_seed, NULL, &basepoints, &secrets, NULL);
if (!derive_simple_privkey(&secrets.htlc_basepoint_secret,
&basepoints.htlc,
&remote_per_commit_point,
&htlc_privkey))
return bad_req_fmt(conn, c, msg_in,
"Failed deriving htlc privkey");
if (!derive_simple_key(&basepoints.htlc,
&remote_per_commit_point,
&htlc_pubkey))
return bad_req_fmt(conn, c, msg_in,
"Failed deriving htlc pubkey");
/* Need input amount for signing */
tx->input[0].amount = tal_dup(tx->input, u64, &amount);
sign_tx_input(tx, 0, NULL, wscript, &htlc_privkey, &htlc_pubkey, &sig);
return req_reply(conn, c, take(towire_hsm_sign_tx_reply(NULL, &sig)));
}
static struct io_plan *handle_sign_mutual_close_tx(struct io_conn *conn,
struct client *c,
const u8 *msg_in)