1 #include "tommath_private.h"
2 #ifdef BN_MP_EXPT_U32_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
4 /* SPDX-License-Identifier: Unlicense */
6 /* calculate c = a**b using a square-multiply algorithm */
7 mp_err mp_expt_u32(const mp_int *a, uint32_t b, mp_int *c)
13 if ((err = mp_init_copy(&g, a)) != MP_OKAY) {
17 /* set initial result */
21 /* if the bit is set multiply */
23 if ((err = mp_mul(c, &g, c)) != MP_OKAY) {
30 if ((err = mp_sqr(&g, &g)) != MP_OKAY) {
35 /* shift to next bit */