core-lightning/connectd/handshake.h
Rusty Russell 66de6b84be channeld: use pointer for shared secret.
It's more natural than using a zero-secret when something goes wrong.

Also note that the HSM will actually kill the connection if the ECDH
fails, which is fortunately statistically unlikely.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2019-01-08 19:20:28 +01:00

58 lines
1.8 KiB
C

#ifndef LIGHTNING_CONNECTD_HANDSHAKE_H
#define LIGHTNING_CONNECTD_HANDSHAKE_H
#include "config.h"
#include <ccan/tal/tal.h>
#include <ccan/typesafe_cb/typesafe_cb.h>
struct crypto_state;
struct io_conn;
struct wireaddr_internal;
struct pubkey;
#define initiator_handshake(conn, my_id, their_id, addr, cb, cbarg) \
initiator_handshake_((conn), (my_id), (their_id), (addr), \
typesafe_cb_preargs(struct io_plan *, void *, \
(cb), (cbarg), \
struct io_conn *, \
const struct pubkey *, \
const struct wireaddr_internal *, \
const struct crypto_state *), \
(cbarg))
struct io_plan *initiator_handshake_(struct io_conn *conn,
const struct pubkey *my_id,
const struct pubkey *their_id,
const struct wireaddr_internal *addr,
struct io_plan *(*cb)(struct io_conn *,
const struct pubkey *,
const struct wireaddr_internal *,
const struct crypto_state *,
void *cbarg),
void *cbarg);
#define responder_handshake(conn, my_id, addr, cb, cbarg) \
responder_handshake_((conn), (my_id), (addr), \
typesafe_cb_preargs(struct io_plan *, void *, \
(cb), (cbarg), \
struct io_conn *, \
const struct pubkey *, \
const struct wireaddr_internal *, \
const struct crypto_state *), \
(cbarg))
struct io_plan *responder_handshake_(struct io_conn *conn,
const struct pubkey *my_id,
const struct wireaddr_internal *addr,
struct io_plan *(*cb)(struct io_conn *,
const struct pubkey *,
const struct wireaddr_internal *,
const struct crypto_state *,
void *cbarg),
void *cbarg);
/* helper which is defined in connect.c */
struct secret *hsm_do_ecdh(const tal_t *ctx, const struct pubkey *point);
#endif /* LIGHTNING_CONNECTD_HANDSHAKE_H */