fix(curves): use ec_double for point doubling in scalar_mul (#431)

zeroprooff · web-flow · commit 61907e73d6b7 · 2026-01-27T08:43:31.000+08:00
diff --git a/crates/curves/src/scalar_mul.rs b/crates/curves/src/scalar_mul.rs
@@ -15,7 +15,7 @@ impl<E: EllipticCurve> AffinePoint<E> {
             if bit {
                 result = result.map_or_else(|| Some(temp.clone()), |r| Some(&r + &temp));
             }
-            temp = &temp + &temp;
+            temp = E::ec_double(&temp);
         }
         result.expect("Scalar multiplication failed")
     }

Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,7 @@ impl<E: EllipticCurve> AffinePoint<E> {`
`15`	`15`	`if bit {`
`16`	`16`	`result = result.map_or_else(\|\| Some(temp.clone()), \|r\| Some(&r + &temp));`
`17`	`17`	`}`
`18`		`- temp = &temp + &temp;`
	`18`	`+ temp = E::ec_double(&temp);`
`19`	`19`	`}`
`20`	`20`	`result.expect("Scalar multiplication failed")`
`21`	`21`	`}`