primitives/sharing/authenticated/
scalar_share.rs

1use std::ops::Mul;
2
3use super::{FieldShare, OpenFieldShare, PointShare};
4use crate::algebra::{
5    elliptic_curve::{BaseField, Curve, Point, ScalarField},
6    field::binary::Gf2_128,
7};
8
9// === Scalar shares === //
10
11pub type OpenScalarShare<C> = OpenFieldShare<ScalarField<C>>;
12pub type OpenBaseFieldShare<C> = OpenFieldShare<BaseField<C>>;
13pub type OpenBitShare = OpenFieldShare<Gf2_128>;
14
15pub type ScalarShare<C> = FieldShare<ScalarField<C>>;
16pub type BaseFieldShare<C> = FieldShare<BaseField<C>>;
17pub type BitShare = FieldShare<Gf2_128>;
18
19// === Curve point multiplication === //
20
21#[macros::op_variants(owned, borrowed, flipped)]
22impl<'a, C: Curve> Mul<&'a Point<C>> for ScalarShare<C> {
23    type Output = PointShare<C>;
24
25    #[inline]
26    fn mul(self, other: &'a Point<C>) -> PointShare<C> {
27        PointShare {
28            value: self.value * other,
29            keys: self.keys.iter().map(|key| key * other).collect(),
30            macs: self.macs.iter().map(|mac| mac * other).collect(),
31        }
32    }
33}
34
35#[macros::op_variants(owned, borrowed, flipped)]
36impl<'a, C: Curve> Mul<&'a ScalarShare<C>> for Point<C> {
37    type Output = PointShare<C>;
38
39    #[inline]
40    fn mul(self, other: &'a ScalarShare<C>) -> PointShare<C> {
41        PointShare {
42            value: other.value * self,
43            macs: other.macs.iter().map(|mac| mac * self).collect(),
44            keys: other.keys.iter().map(|key| key * self).collect(),
45        }
46    }
47}
primitives/sharing/authenticated/scalar_share.rs

primitives/sharing/authenticated/
scalar_share.rs
