From f3f4fef0e92b05a91ae9ff79f7e81f7c78a9c2c4 Mon Sep 17 00:00:00 2001
From: daxpedda <daxpedda@gmail.com>
Date: Thu, 8 May 2025 00:40:24 +0200
Subject: [PATCH] Align `Ristretto255::random_scalar()` with spec (#142)

---
 src/group/ristretto.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/group/ristretto.rs b/src/group/ristretto.rs
index 39aa4c1..68c7523 100644
--- a/src/group/ristretto.rs
+++ b/src/group/ristretto.rs
@@ -96,9 +96,10 @@ impl Group for Ristretto255 {
 
     fn random_scalar<R: RngCore + CryptoRng>(rng: &mut R) -> Self::Scalar {
         loop {
-            let scalar = Scalar::random(rng);
+            let mut scalar_bytes = [0u8; 32];
+            rng.fill_bytes(&mut scalar_bytes);
 
-            if scalar != Scalar::ZERO {
+            if let Ok(scalar) = Self::deserialize_scalar(&scalar_bytes) {
                 break scalar;
             }
         }