Function invoice_secret

lightningd/invoice.c:138–150

We derive invoice secret using 1-way function from payment_preimage * (just a different one from the payment_hash!) */

/* We derive invoice secret using 1-way function from payment_preimage
 * (just a different one from the payment_hash!) */
static void invoice_secret(const struct preimage *payment_preimage,
			   struct secret *payment_secret)
{
	struct preimage modified;
	struct sha256 secret;

	modified = *payment_preimage;
	modified.r[0] ^= 1;

	sha256(&secret, modified.r,
	       ARRAY_SIZE(modified.r) * sizeof(*modified.r));
	CROSS_TYPE_ASSIGNMENT(&payment_secret->data, &secret.u.u8);
}

struct invoice_payment_hook_payload {
	struct lightningd *ld;