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| author | Niels Möller <nisse@lysator.liu.se> | 2020-11-01 10:22:48 +0100 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2020-11-01 10:22:48 +0100 |
| commit | 172448b05931e791ce3470b45afe8de4cdffaaad (patch) | |
| tree | cd7d238a5ba07568c71619a9bb7819e107cfe205 /ecc-eh-to-a.c | |
| parent | 98402b3b32b346a568c0d0d8e56a64f27116250c (diff) | |
| download | nettle-172448b05931e791ce3470b45afe8de4cdffaaad.tar.gz | |
Separate result area for ecc_mod_mul and ecc_mod_sqr.
* ecc-mod-arith.c (ecc_mod_mul, ecc_mod_sqr): Separate argument
for scratch area, reducing required size of result area. Update
all callers to naïvely keep using result in scratch area.
(ecc_mod_pow_2k, ecc_mod_pow_2k_mul): Simplified, also reducing
required size of result area.
Diffstat (limited to 'ecc-eh-to-a.c')
| -rw-r--r-- | ecc-eh-to-a.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ecc-eh-to-a.c b/ecc-eh-to-a.c index 869e8ad5..ce71e93f 100644 --- a/ecc-eh-to-a.c +++ b/ecc-eh-to-a.c @@ -61,11 +61,11 @@ ecc_eh_to_a (const struct ecc_curve *ecc, /* Needs 2*size + scratch for the invert call. */ ecc->p.invert (&ecc->p, izp, zp, tp + ecc->p.size); - ecc_mod_mul (&ecc->p, tp, xp, izp); + ecc_mod_mul (&ecc->p, tp, xp, izp, tp); cy = mpn_sub_n (r, tp, ecc->p.m, ecc->p.size); cnd_copy (cy, r, tp, ecc->p.size); - ecc_mod_mul (&ecc->p, tp, yp, izp); + ecc_mod_mul (&ecc->p, tp, yp, izp, tp); cy = mpn_sub_n (r + ecc->p.size, tp, ecc->p.m, ecc->p.size); cnd_copy (cy, r + ecc->p.size, tp, ecc->p.size); } |