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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-ecdsa-verify.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-ecdsa-verify.c')
| -rw-r--r-- | ecc-ecdsa-verify.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ecc-ecdsa-verify.c b/ecc-ecdsa-verify.c index c43bdadc..d88bf64c 100644 --- a/ecc-ecdsa-verify.c +++ b/ecc-ecdsa-verify.c @@ -102,10 +102,10 @@ ecc_ecdsa_verify (const struct ecc_curve *ecc, /* u1 = h / s, P1 = u1 * G */ ecc_hash (&ecc->q, hp, length, digest); - ecc_mod_mul (&ecc->q, u1, hp, sinv); + ecc_mod_mul (&ecc->q, u1, hp, sinv, u1); /* u2 = r / s, P2 = u2 * Y */ - ecc_mod_mul (&ecc->q, u2, rp, sinv); + ecc_mod_mul (&ecc->q, u2, rp, sinv, u2); /* Total storage: 5*ecc->p.size + ecc->mul_itch */ ecc->mul (ecc, P2, u2, pp, u2 + ecc->p.size); |