From 7ac5360118f74eb02da73bdf9f24fd0c72ff5281 Mon Sep 17 00:00:00 2001
From: Markus-MS <45643263+Markus-MS@users.noreply.github.com>
Date: Tue, 16 Jul 2024 22:22:53 -0400
Subject: [PATCH] Merge commit from fork

---
 lib/elliptic/eddsa/index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/elliptic/eddsa/index.js b/lib/elliptic/eddsa/index.js
index d777983a..cb703a7c 100644
--- a/lib/elliptic/eddsa/index.js
+++ b/lib/elliptic/eddsa/index.js
@@ -52,6 +52,9 @@ EDDSA.prototype.sign = function sign(message, secret) {
 EDDSA.prototype.verify = function verify(message, sig, pub) {
   message = parseBytes(message);
   sig = this.makeSignature(sig);
+  if (sig.S().gte(sig.eddsa.curve.n) || sig.S().isNeg()) {
+    return false;
+  }
   var key = this.keyFromPublic(pub);
   var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);
   var SG = this.g.mul(sig.S());