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| author | Niels Möller <nisse@lysator.liu.se> | 2021-10-23 20:39:15 +0200 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2021-10-23 20:39:15 +0200 |
| commit | 26b0f47b458767ec5a3a4d7980498b03a4e8ded7 (patch) | |
| tree | 37da5c2d5cc0419ae338d001e65d012eac072b57 /ecc-curve448.c | |
| parent | 45028ff232dd90fd2afce6e1550a4ca3b0844612 (diff) | |
| download | nettle-26b0f47b458767ec5a3a4d7980498b03a4e8ded7.tar.gz | |
New function sec_zero_p.
Diffstat (limited to 'ecc-curve448.c')
| -rw-r--r-- | ecc-curve448.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/ecc-curve448.c b/ecc-curve448.c index bd87c5b8..2c3d54ba 100644 --- a/ecc-curve448.c +++ b/ecc-curve448.c @@ -158,15 +158,10 @@ static void ecc_curve448_inv (const struct ecc_modulo *p, static int ecc_curve448_zero_p (const struct ecc_modulo *p, mp_limb_t *xp) { - mp_limb_t cy; - mp_limb_t w; - mp_size_t i; - cy = mpn_sub_n (xp, xp, p->m, ECC_LIMB_SIZE); + mp_limb_t cy = mpn_sub_n (xp, xp, p->m, ECC_LIMB_SIZE); mpn_cnd_add_n (cy, xp, xp, p->m, ECC_LIMB_SIZE); - for (i = 0, w = 0; i < ECC_LIMB_SIZE; i++) - w |= xp[i]; - return w == 0; + return sec_zero_p (xp, ECC_LIMB_SIZE); } /* Compute x such that x^2 = u/v (mod p). Returns one on success, zero |