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Modularize Bulletproofs in prep for BP+

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This commit is contained in:
Luke Parker
2022-07-26 08:06:56 -04:00
parent 60e15d5160
commit 37b8e3c025
5 changed files with 159 additions and 88 deletions
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17
coins/monero/src/ringct/bulletproofs/scalar_vector.rs
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@@ -50,19 +50,20 @@ impl ScalarVector {
}
pub(crate) fn powers(x: Scalar, len: usize) -> ScalarVector {
let mut res = Vec::with_capacity(len);
if len == 0 {
return ScalarVector(res);
}
debug_assert!(len != 0);
let mut res = Vec::with_capacity(len);
res.push(Scalar::one());
for i in 1 .. len {
res.push(res[i - 1] * x);
}
ScalarVector(res)
}
pub(crate) fn sum(mut self) -> Scalar {
self.0.drain(..).sum()
}
pub(crate) fn len(&self) -> usize {
self.0.len()
}
@@ -81,7 +82,11 @@ impl Index<usize> for ScalarVector {
}
pub(crate) fn inner_product(a: &ScalarVector, b: &ScalarVector) -> Scalar {
(a * b).0.drain(..).sum()
(a * b).sum()
}
pub(crate) fn weighted_inner_product(a: &ScalarVector, b: &ScalarVector, y: Scalar) -> Scalar {
(a * b * ScalarVector::powers(y, a.len())).sum()
}
impl Mul<&[EdwardsPoint]> for &ScalarVector {