saymrwulf/pasta_curves-source
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Remove unnecessary identity check from Group::random impl

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Co-authored-by: ebfull <ewillbefull@gmail.com>
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str4d 2021-03-03 11:11:13 +13:00 committed by GitHub
parent 62e50ae6bd
commit 5e05845936
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1 changed files with 0 additions and 6 deletions
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src/pasta/curves.rs
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@ -65,12 +65,6 @@ macro_rules! new_curve_impl {
let x = $base::random(&mut rng); let x = $base::random(&mut rng);
let ysign = (rng.next_u32() % 2) as u8; let ysign = (rng.next_u32() % 2) as u8;
if x.is_zero() && ysign == 0 {
// This would be the identity if encoded, and Group::random must
// sample from the non-identity elements of the group.
continue;
}
let x3 = x.square() * x; let x3 = x.square() * x;
let y = (x3 + $name::curve_constant_b()).sqrt(); let y = (x3 + $name::curve_constant_b()).sqrt();
if let Some(y) = Option::<$base>::from(y) { if let Some(y) = Option::<$base>::from(y) {