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Redo the Bulletproofs impl

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Uses the IP-impl from the FCMP++ work.
This commit is contained in:
Luke Parker
2024-07-10 20:56:53 -04:00
parent 3ddf1eec0c
commit 7a68b065e0
12 changed files with 794 additions and 431 deletions
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18
coins/monero/ringct/bulletproofs/src/plus/aggregate_range_proof.rs
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@@ -20,15 +20,9 @@ use crate::{
// Figure 3 of the Bulletproofs+ Paper
#[derive(Clone, Debug)]
pub(crate) struct AggregateRangeStatement {
pub(crate) struct AggregateRangeStatement<'a> {
generators: BpPlusGenerators,
V: Vec<EdwardsPoint>,
}
impl Zeroize for AggregateRangeStatement {
fn zeroize(&mut self) {
self.V.zeroize();
}
V: &'a [EdwardsPoint],
}
#[derive(Clone, Debug, Zeroize, ZeroizeOnDrop)]
@@ -61,8 +55,8 @@ struct AHatComputation {
A_hat: EdwardsPoint,
}
impl AggregateRangeStatement {
pub(crate) fn new(V: Vec<EdwardsPoint>) -> Option<Self> {
impl<'a> AggregateRangeStatement<'a> {
pub(crate) fn new(V: &'a [EdwardsPoint]) -> Option<Self> {
if V.is_empty() || (V.len() > MAX_COMMITMENTS) {
return None;
}
@@ -180,7 +174,7 @@ impl AggregateRangeStatement {
// Commitments aren't transmitted INV_EIGHT though, so this multiplies by INV_EIGHT to enable
// clearing its cofactor without mutating the value
// For some reason, these values are transcripted * INV_EIGHT, not as transmitted
let V = V.into_iter().map(|V| V * INV_EIGHT()).collect::<Vec<_>>();
let V = V.iter().map(|V| V * INV_EIGHT()).collect::<Vec<_>>();
let mut transcript = initial_transcript(V.iter());
let mut V = V.iter().map(EdwardsPoint::mul_by_cofactor).collect::<Vec<_>>();
@@ -248,7 +242,7 @@ impl AggregateRangeStatement {
) -> bool {
let Self { generators, V } = self;
let V = V.into_iter().map(|V| V * INV_EIGHT()).collect::<Vec<_>>();
let V = V.iter().map(|V| V * INV_EIGHT()).collect::<Vec<_>>();
let mut transcript = initial_transcript(V.iter());
let V = V.iter().map(EdwardsPoint::mul_by_cofactor).collect::<Vec<_>>();