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Add lincomb_vartime function to LinearCombination trait #2286

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Merged
tarcieri merged 2 commits into from
Feb 6, 2026
+9 −0
Merged

Add lincomb_vartime function to LinearCombination trait #2286

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edb45c2
Add lincomb_vartime function to LinearCombination trait
randombit Feb 6, 2026
34b7a13
Update elliptic-curve/src/ops.rs
tarcieri Feb 6, 2026
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9 changes: 9 additions & 0 deletions elliptic-curve/src/ops.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -172,6 +172,15 @@ where
.map(|(point, scalar)| point * scalar)
.sum()
}

/// Calculates `x1 * k1 + ... + xn * kn`.
///
/// This is equivalent to [`LinearCombination::lincomb`] except
/// that it may leak the value of the points and/or scalars due to
/// variable-time behavior.
fn lincomb_vartime(points_and_scalars: &PointsAndScalars) -> Self {
Self::lincomb(points_and_scalars)
}
}

/// Modular reduction to a non-zero output.
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