elliptic-curve: relax Sized requirements on Rng (#1767)

baloo · web-flow · commit 28b6e0d3231f · 2025-02-23T22:58:08.000+01:00
diff --git a/elliptic-curve/src/scalar/nonzero.rs b/elliptic-curve/src/scalar/nonzero.rs
@@ -47,7 +47,7 @@ where
     C: CurveArithmetic,
 {
     /// Generate a random `NonZeroScalar`.
-    pub fn random<R: CryptoRng>(mut rng: &mut R) -> Self {
+    pub fn random<R: CryptoRng + ?Sized>(mut rng: &mut R) -> Self {
         // Use rejection sampling to eliminate zero values.
         // While this method isn't constant-time, the attacker shouldn't learn
         // anything about unrelated outputs so long as `rng` is a secure `CryptoRng`.

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,7 @@ where`
`47`	`47`	`C: CurveArithmetic,`
`48`	`48`	`{`
`49`	`49`	/// Generate a random `NonZeroScalar`.
`50`		`- pub fn random<R: CryptoRng>(mut rng: &mut R) -> Self {`
	`50`	`+ pub fn random<R: CryptoRng + ?Sized>(mut rng: &mut R) -> Self {`
`51`	`51`	`// Use rejection sampling to eliminate zero values.`
`52`	`52`	`// While this method isn't constant-time, the attacker shouldn't learn`
`53`	`53`	// anything about unrelated outputs so long as `rng` is a secure `CryptoRng`.