Function sphinx_compress

common/sphinx.c:837–857

}

struct sphinx_compressed_onion *
sphinx_compress(const tal_t *ctx, const struct onionpacket *packet,
		const struct sphinx_path *path)
{
	struct sphinx_compressed_onion *res;
	size_t payloads_size = sphinx_path_payloads_size(path);

	/* We can't compress an onion that doesn't have a rendez-vous node. */
	if (path->rendezvous_id == NULL)
		return NULL;

	res = tal(ctx, struct sphinx_compressed_onion);
	res->version = packet->version;
	res->ephemeralkey = packet->ephemeralkey;
	res->hmac = packet->hmac;

	res->routinginfo = tal_arr(res, u8, payloads_size);
	memcpy(res->routinginfo, packet->routinginfo, payloads_size);

	return res;
}

u8 *sphinx_compressed_onion_serialize(const tal_t *ctx, const struct sphinx_compressed_onion *onion)
{