Improve projective mul by scalar perf

xJonathanLEI · Mar 27, 2024 · a3c22c3 · a3c22c3
1 parent 5de6c2d
commit a3c22c3
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/starknet-curve/src/ec_point.rs b/starknet-curve/src/ec_point.rs
@@ -138,7 +138,7 @@ impl ops::Mul<&[bool]> for &AffinePoint {
     #[allow(clippy::suspicious_arithmetic_impl)]
     fn mul(self, rhs: &[bool]) -> Self::Output {
         let mut product = AffinePoint::identity();
-        for b in rhs.iter().rev() {
+        for b in rhs.iter().rev().skip_while(|b| !*b) {
             product.double_assign();
             if *b {
                 product += self;
@@ -284,7 +284,7 @@ impl ops::Mul<&[bool]> for &ProjectivePoint {
     #[allow(clippy::suspicious_arithmetic_impl)]
     fn mul(self, rhs: &[bool]) -> Self::Output {
         let mut product = ProjectivePoint::identity();
-        for b in rhs.iter().rev() {
+        for b in rhs.iter().rev().skip_while(|b| !*b) {
             product.double_assign();
             if *b {
                 product += self;