primitives/hashing/
random_oracle.rs

1use crate::{
2    algebra::elliptic_curve::{Curve, Point},
3    hashing::hashing_utils,
4    utils::InPlaceCodec,
5};
6
7pub struct TaggedRandomOracle<'ro> {
8    tag: &'ro [u8],
9}
10
11impl<'ro> TaggedRandomOracle<'ro> {
12    pub fn new(tag: &'ro [u8]) -> Self {
13        Self { tag }
14    }
15
16    pub fn hash_x<C: Curve>(&self, input: &Point<C>, x: u8) -> Point<C> {
17        let bytes =
18            hashing_utils::flatten_slices(&[self.tag, &[x], input.to_inplace_bytes().as_ref()]);
19        Point::new(C::hash_to_curve(&bytes))
20    }
21}

primitives/hashing/random_oracle.rs

primitives/hashing/
random_oracle.rs