Mercurial > dropbear

view libtommath/bn_mp_complement.c @ 1702:8f93f37c01de

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Allow DH to be completely disabled (#97) Reduces binary size by ~2kB by default and by 21kB with no other libtommath functions users, ex. with curve25519 kex and ed25519 key only.
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Thu, 28 May 2020 20:01:48 +0500
parents 1051e4eea25a
children
line wrap: on
line source

#include "tommath_private.h"
#ifdef BN_MP_COMPLEMENT_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

/* b = ~a */
mp_err mp_complement(const mp_int *a, mp_int *b)
{
   mp_err err = mp_neg(a, b);
   return (err == MP_OKAY) ? mp_sub_d(b, 1uL, b) : err;
}
#endif