C++ (Cpp) mp_invmod_slow 예제들

예제 #1

파일: bn_mp_invmod.c 프로젝트: wengsht/1key

/* hac 14.61, pp608 */
int mp_invmod(mp_int * a, mp_int * b, mp_int * c)
{
	/* b cannot be negative */
	if (b->sign == MP_NEG || mp_iszero(b) == 1) {
		return MP_VAL;
	}
#ifdef BN_FAST_MP_INVMOD_C
	/* if the modulus is odd we can use a faster routine instead */
	if (mp_isodd(b) == 1) {
		return fast_mp_invmod(a, b, c);
	}
#endif

#ifdef BN_MP_INVMOD_SLOW_C
	return mp_invmod_slow(a, b, c);
#endif

	return MP_VAL;
}

예제 #2

파일: bn_mp_invmod.c 프로젝트: libtom/libtommath

/* hac 14.61, pp608 */
int mp_invmod(const mp_int *a, const mp_int *b, mp_int *c)
{
   /* b cannot be negative and has to be >1 */
   if ((b->sign == MP_NEG) || (mp_cmp_d(b, 1uL) != MP_GT)) {
      return MP_VAL;
   }

#ifdef BN_FAST_MP_INVMOD_C
   /* if the modulus is odd we can use a faster routine instead */
   if ((mp_isodd(b) == MP_YES)) {
      return fast_mp_invmod(a, b, c);
   }
#endif

#ifdef BN_MP_INVMOD_SLOW_C
   return mp_invmod_slow(a, b, c);
#else
   return MP_VAL;
#endif
}