saymrwulf/pasta_curves-source
1
0
Fork 0
mirror of https://github.com/saymrwulf/pasta_curves-source.git synced 2026-09-04 20:03:39 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add example to hash_to_curve doc comment.

Browse source
This commit is contained in:
Sean Bowe 2021-02-02 12:39:58 -07:00 committed by Daira Hopwood
parent dc069dff31
commit b488355e13
1 changed files with 13 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
src/arithmetic/curves.rs
View file

@ -80,9 +80,21 @@ pub trait Curve:
fn jacobian_coordinates(&self) -> (Self::Base, Self::Base, Self::Base);
/// Requests a hasher that accepts messages and returns near-uniformly
/// distributed elements in the group, given domain prefix `hasher`.
/// distributed elements in the group, given domain prefix `domain_prefix`.
///
/// This method is suitable for use as a random oracle.
///
/// # Example
///
/// ```
/// use halo2::arithmetic::{Curve, CurveAffine};
/// fn pedersen_commitment<C: CurveAffine>(x: C::Scalar, r: C::Scalar) -> C {
/// let hasher = C::Projective::hash_to_curve("z.cash:example_pedersen_commitment");
/// let g = hasher(b"g");
/// let h = hasher(b"h");
/// (g * x + h * r).to_affine()
/// }
/// ```
fn hash_to_curve(domain_prefix: &str) -> Box<dyn Fn(&[u8]) -> Self + 'static>;
/// Returns whether or not this element is on the curve; should