absolutebi/serai
1
0
Fork 0
mirror of https://github.com/serai-dex/serai.git synced 2025-12-08 20:29:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

Bulletproofs+ Verification

Browse Source
This commit is contained in:
Luke Parker
2022-08-01 23:30:24 -04:00
parent d07fe34a24
commit 9221dbf048
4 changed files with 178 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
coins/monero/src/ringct/bulletproofs/core.rs
View File

@@ -151,3 +151,24 @@ pub(crate) fn LR_statements(
lazy_static! {
pub(crate) static ref TWO_N: ScalarVector = ScalarVector::powers(Scalar::from(2u8), N);
}
pub(crate) fn challenge_products(w: &[Scalar], winv: &[Scalar]) -> Vec<Scalar> {
let mut products = vec![Scalar::zero(); 1 << w.len()];
products[0] = winv[0];
products[1] = w[0];
for j in 1 .. w.len() {
let mut slots = (1 << (j + 1)) - 1;
while slots > 0 {
products[slots] = products[slots / 2] * w[j];
products[slots - 1] = products[slots / 2] * winv[j];
slots = slots.saturating_sub(2);
}
}
// Sanity check as if the above failed to populate, it'd be critical
for w in &products {
debug_assert!(!bool::from(w.is_zero()));
}
products
}