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| author | Denys Vlasenko | 2021-11-27 15:50:40 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2021-11-27 15:50:40 +0100 |
| commit | 8cbb70365f653397c8c2b9370214d5aed36ec9fa (patch) | |
| tree | f7fe3cb62bb2a4e0e68de2606fb646a508b78b1c | |
| parent | 4415f7bc06f1ee382bcbaabd86c3d7aca0b46d93 (diff) | |
| download | busybox-8cbb70365f653397c8c2b9370214d5aed36ec9fa.zip busybox-8cbb70365f653397c8c2b9370214d5aed36ec9fa.tar.gz | |
tls: P256: remove redundant zeroing in sp_256_map_8
Previous change made it obvious that we zero out already-zeroed high bits
function old new delta
sp_256_ecc_mulmod_8 534 494 -40
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | networking/tls_sp_c32.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/networking/tls_sp_c32.c b/networking/tls_sp_c32.c index 74ded2c..baed62f 100644 --- a/networking/tls_sp_c32.c +++ b/networking/tls_sp_c32.c @@ -1062,7 +1062,6 @@ static void sp_256_map_8(sp_point* r, sp_point* p) /* x /= z^2 */ sp_256to512z_mont_mul_8(r->x, p->x, t2 /*, p256_mod, p256_mp_mod*/); - memset(r->x + 8, 0, sizeof(r->x) / 2); sp_512to256_mont_reduce_8(r->x /*, p256_mod, p256_mp_mod*/); /* Reduce x to less than modulus */ if (sp_256_cmp_8(r->x, p256_mod) >= 0) @@ -1071,7 +1070,6 @@ static void sp_256_map_8(sp_point* r, sp_point* p) /* y /= z^3 */ sp_256to512z_mont_mul_8(r->y, p->y, t1 /*, p256_mod, p256_mp_mod*/); - memset(r->y + 8, 0, sizeof(r->y) / 2); sp_512to256_mont_reduce_8(r->y /*, p256_mod, p256_mp_mod*/); /* Reduce y to less than modulus */ if (sp_256_cmp_8(r->y, p256_mod) >= 0) |