Merging upstream version 1.76.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/vendor/elliptic-curve/src/point.rs b/vendor/elliptic-curve/src/point.rs
index 25b872a0e..ee4eded44 100644
--- a/vendor/elliptic-curve/src/point.rs
+++ b/vendor/elliptic-curve/src/point.rs
@@ -32,6 +32,18 @@ pub trait AffineCoordinates {
     fn y_is_odd(&self) -> Choice;
 }
 
+/// Normalize point(s) in projective representation by converting them to their affine ones.
+#[cfg(feature = "arithmetic")]
+pub trait BatchNormalize<Points: ?Sized>: group::Curve {
+    /// The output of the batch normalization; a container of affine points.
+    type Output: AsRef<[Self::AffineRepr]>;
+
+    /// Perform a batched conversion to affine representation on a sequence of projective points
+    /// at an amortized cost that should be practically as efficient as a single conversion.
+    /// Internally, implementors should rely upon `InvertBatch`.
+    fn batch_normalize(points: &Points) -> <Self as BatchNormalize<Points>>::Output;
+}
+
 /// Double a point (i.e. add it to itself)
 pub trait Double {
     /// Double this point.