From 3e27bf3c77901920a8463207d5a054244dad73f4 Mon Sep 17 00:00:00 2001
From: daxpedda <daxpedda@gmail.com>
Date: Tue, 29 Apr 2025 18:56:27 +0200
Subject: [PATCH] Implement `Zeroize` for `ed25519::Signature`

---
 ed25519/src/lib.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ed25519/src/lib.rs b/ed25519/src/lib.rs
index 01f3951f..d62e0cbc 100644
--- a/ed25519/src/lib.rs
+++ b/ed25519/src/lib.rs
@@ -292,6 +292,9 @@ use pkcs8::spki::{
     der::{self, asn1::BitString},
 };
 
+#[cfg(feature = "zeroize")]
+use zeroize::Zeroize;
+
 /// Size of a single component of an Ed25519 signature.
 const COMPONENT_SIZE: usize = 32;
 
@@ -446,3 +449,11 @@ impl fmt::Display for Signature {
         write!(f, "{:X}", self)
     }
 }
+
+#[cfg(feature = "zeroize")]
+impl Zeroize for Signature {
+    fn zeroize(&mut self) {
+        self.R = [0; 32];
+        self.s = [0; 32];
+    }
+}