Ecosystem/serai
Ecosystem/serai
1
0
Fork 0
mirror of https://github.com/serai-dex/serai.git synced 2025-01-22 02:34:55 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Use a do-while in multiexp, first to please a friend, and then to annoy them

Browse source 
It's also legitimately cleaner code.
This commit is contained in:
Luke Parker 2022-07-02 14:22:17 -04:00
parent a81a76da3b
commit 3acfb5b7d2
No known key found for this signature in database
GPG key ID: F9F1386DB1E119B6
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
crypto/multiexp/src/batch.rs
View file

@ -22,11 +22,12 @@ impl<Id: Copy, G: Group> BatchVerifier<Id, G> where <G as Group>::Scalar: PrimeF
let u = if self.0.len() == 0 { let u = if self.0.len() == 0 {
G::Scalar::one() G::Scalar::one()
} else { } else {
let mut weight = G::Scalar::random(&mut *rng); let mut weight;
// Ensure it's non-zero, as a zero scalar would cause this item to pass no matter what // Ensure it's non-zero, as a zero scalar would cause this item to pass no matter what
while weight.is_zero().into() { while {
weight = G::Scalar::random(&mut *rng); weight = G::Scalar::random(&mut *rng);
} weight.is_zero().into()
} {}
weight weight
}; };
self.0.push((id, pairs.into_iter().map(|(scalar, point)| (scalar * u, point)).collect())); self.0.push((id, pairs.into_iter().map(|(scalar, point)| (scalar * u, point)).collect()));