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Constant-time field inversion

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WARNING: THIS IS NOT ACTUALLY CONSTANT TIME YET!

The jubjub and bls12_381 crates will replace our constant-time usages,
but we NEED to fix ff_derive because other users will expect it to
implement the Field trait correctly.
This commit is contained in:
Jack Grigg
2019-05-14 14:18:37 +01:00
parent e85a9f309f
commit 40749da9a7
25 changed files with 243 additions and 221 deletions
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4
pairing/benches/bls12_381/fr.rs
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@@ -217,7 +217,7 @@ fn bench_fr_square(b: &mut ::test::Bencher) {
}
#[bench]
fn bench_fr_inverse(b: &mut ::test::Bencher) {
fn bench_fr_invert(b: &mut ::test::Bencher) {
const SAMPLES: usize = 1000;
let mut rng = XorShiftRng::from_seed([
@@ -230,7 +230,7 @@ fn bench_fr_inverse(b: &mut ::test::Bencher) {
let mut count = 0;
b.iter(|| {
count = (count + 1) % SAMPLES;
v[count].inverse()
v[count].invert()
});
}