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| author | Frank Denis <github@pureftpd.org> | 2020-11-23 18:59:05 +0100 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2020-11-25 15:37:43 -0800 |
| commit | 83abb322478a148aeb6206e10f0f72e70d35c67d (patch) | |
| tree | f259c28f2f56bad086960c676b4f65b3cf5b4bc1 /lib/std | |
| parent | 58c2bec589d6d90db31744430407bc88695b5161 (diff) | |
| download | zig-83abb322478a148aeb6206e10f0f72e70d35c67d.tar.gz zig-83abb322478a148aeb6206e10f0f72e70d35c67d.zip | |
std/crypto - edwards25519 precomp: prefer doublings over adds
Doublings are a little bit faster than additions, so use them half
the time during precomputations.
Diffstat (limited to 'lib/std')
| -rw-r--r-- | lib/std/crypto/25519/edwards25519.zig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/std/crypto/25519/edwards25519.zig b/lib/std/crypto/25519/edwards25519.zig index f58f2fe8cc..008a4535b3 100644 --- a/lib/std/crypto/25519/edwards25519.zig +++ b/lib/std/crypto/25519/edwards25519.zig @@ -221,7 +221,7 @@ pub const Edwards25519 = struct { pc[1] = p; var i: usize = 2; while (i <= count) : (i += 1) { - pc[i] = pc[i - 1].add(p); + pc[i] = if (i % 2 == 0) pc[i / 2].dbl() else pc[i - 1].add(p); } return pc; } |