BN_with_flags
BN_with_flags(&local_B, B, BN_FLG_CONSTTIME);
BN_with_flags(&local_A, A, BN_FLG_CONSTTIME);
BN_with_flags(prk, priv_key, BN_FLG_CONSTTIME);
BN_with_flags(prk, priv_key, BN_FLG_CONSTTIME);
BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME);
BN_with_flags(pr1, r1, BN_FLG_CONSTTIME);
BN_with_flags(pr2, r2, BN_FLG_CONSTTIME);
BN_with_flags(d, rsa->d, BN_FLG_CONSTTIME);
BN_with_flags(d, rsa->d, BN_FLG_CONSTTIME);
BN_with_flags(d, rsa->d, BN_FLG_CONSTTIME);
BN_with_flags(d, rsa->d, BN_FLG_CONSTTIME);
if (!(BN_with_flags(factor, rsa->p, BN_FLG_CONSTTIME),
|| !(BN_with_flags(factor, rsa->q, BN_FLG_CONSTTIME),
BN_with_flags(factor, pinfo->r, BN_FLG_CONSTTIME);
BN_with_flags(c, I, BN_FLG_CONSTTIME);
BN_with_flags(dmq1, rsa->dmq1, BN_FLG_CONSTTIME);
BN_with_flags(dmp1, rsa->dmp1, BN_FLG_CONSTTIME);
BN_with_flags(cc, I, BN_FLG_CONSTTIME);
BN_with_flags(di, pinfo->d, BN_FLG_CONSTTIME);
BN_with_flags(xtmp, x, BN_FLG_CONSTTIME);
void BN_with_flags(BIGNUM *dest, const BIGNUM *b, int flags);