crypto/bn/bn_nist.c

64 #define BN_NIST_256_TOP (256+BN_BITS2-1)/BN_BITS2
96 static const BN_ULONG _nist_p_256[][BN_NIST_256_TOP] = {
178 static const BN_ULONG _nist_p_256[][BN_NIST_256_TOP] = {
254     BN_NIST_256_TOP,
255     BN_NIST_256_TOP,
559     BN_ULONG t_d[BN_NIST_256_TOP],
560         buf[BN_NIST_256_TOP], c_d[BN_NIST_256_TOP], *res;
586         if (!bn_wexpand(r, BN_NIST_256_TOP))
589         nist_cp_bn(r_d, a_d, BN_NIST_256_TOP);
593     nist_cp_bn_0(buf, a_d + BN_NIST_256_TOP, top - BN_NIST_256_TOP,
594                  BN_NIST_256_TOP);
604     carry = (int)bn_add_words(t_d, t_d, c_d, BN_NIST_256_TOP);
610         for (i = BN_NIST_256_TOP; i != 0; --i) {
618     carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP);
623     carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP);
628     carry += (int)bn_add_words(r_d, r_d, t_d, BN_NIST_256_TOP);
633     carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
638     carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
643     carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
648     carry -= (int)bn_sub_words(r_d, r_d, t_d, BN_NIST_256_TOP);
655                               BN_NIST_256_TOP);
659                               BN_NIST_256_TOP);
665     mask = 0 - (size_t)(*u.f) (c_d, r_d, _nist_p_256[0], BN_NIST_256_TOP);
668     nist_cp_bn(r_d, res, BN_NIST_256_TOP);
669     r->top = BN_NIST_256_TOP;
751                               t_d, BN_NIST_256_TOP);