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Add init function for BP statics

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Considering they take 7 seconds to generate, thanks to #68, the ability 
to generate them at the start instead of on first BP is greatly 
appreciated.

Also performs minor cleanups regarding BPs.
This commit is contained in:
Luke Parker
2022-08-02 15:52:27 -04:00
parent 9221dbf048
commit a30568ff57
9 changed files with 68 additions and 24 deletions
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6
coins/monero/src/ringct/bulletproofs/scalar_vector.rs
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@@ -103,9 +103,13 @@ pub(crate) fn inner_product(a: &ScalarVector, b: &ScalarVector) -> Scalar {
(a * b).sum()
}
pub(crate) fn weighted_powers(x: Scalar, len: usize) -> ScalarVector {
ScalarVector(ScalarVector::powers(x, len + 1).0[1 ..].to_vec())
}
pub(crate) fn weighted_inner_product(a: &ScalarVector, b: &ScalarVector, y: Scalar) -> Scalar {
// y ** 0 is not used as a power
(a * b * ScalarVector(ScalarVector::powers(y, a.len() + 1).0[1 ..].to_vec())).sum()
(a * b * weighted_powers(y, a.len())).sum()
}
impl Mul<&[EdwardsPoint]> for &ScalarVector {