core-lightning/bitcoin/shadouble.c
Rusty Russell 85ff95e829 common: new directory for any shared objects.
To avoid everything pulling in HTLCs stuff to the opening daemon, we
split the channel and commit_tx routines into initial_channel and
initial_commit_tx (no HTLC support) and move full HTLC supporting versions
into channeld.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-08-29 17:54:14 +02:00

18 lines
490 B
C

#include "shadouble.h"
#include <ccan/mem/mem.h>
#include <common/type_to_string.h>
void sha256_double(struct sha256_double *shadouble, const void *p, size_t len)
{
sha256(&shadouble->sha, memcheck(p, len), len);
sha256(&shadouble->sha, &shadouble->sha, sizeof(shadouble->sha));
}
void sha256_double_done(struct sha256_ctx *shactx, struct sha256_double *res)
{
sha256_done(shactx, &res->sha);
sha256(&res->sha, &res->sha, sizeof(res->sha));
}
REGISTER_TYPE_TO_HEXSTR(sha256_double);