mirror of
https://github.com/clearml/dropbear
synced 2025-01-31 02:46:58 +00:00
b4bd23b4d2
* update C files * update other files * update headers * update makefiles * remove mp_set/get_double() * use ltm 1.2.0 API * update ltm_desc * use bundled tommath if system-tommath is too old * XMALLOC etc. were changed to MP_MALLOC etc.
36 lines
823 B
C
36 lines
823 B
C
#include "tommath_private.h"
|
|
#ifdef BN_S_MP_PRIME_IS_DIVISIBLE_C
|
|
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
|
|
/* SPDX-License-Identifier: Unlicense */
|
|
|
|
/* determines if an integers is divisible by one
|
|
* of the first PRIME_SIZE primes or not
|
|
*
|
|
* sets result to 0 if not, 1 if yes
|
|
*/
|
|
mp_err s_mp_prime_is_divisible(const mp_int *a, mp_bool *result)
|
|
{
|
|
int ix;
|
|
mp_err err;
|
|
mp_digit res;
|
|
|
|
/* default to not */
|
|
*result = MP_NO;
|
|
|
|
for (ix = 0; ix < PRIVATE_MP_PRIME_TAB_SIZE; ix++) {
|
|
/* what is a mod LBL_prime_tab[ix] */
|
|
if ((err = mp_mod_d(a, s_mp_prime_tab[ix], &res)) != MP_OKAY) {
|
|
return err;
|
|
}
|
|
|
|
/* is the residue zero? */
|
|
if (res == 0u) {
|
|
*result = MP_YES;
|
|
return MP_OKAY;
|
|
}
|
|
}
|
|
|
|
return MP_OKAY;
|
|
}
|
|
#endif
|