From 45c6b993945f01076e386cb59988b1836a329999 Mon Sep 17 00:00:00 2001
From: Peter Dettman <peter.dettman@bouncycastle.org>
Date: Tue, 7 May 2024 22:44:37 +0700
Subject: Patch #1 for 2.3

- TLS: fix timing side-channel for RSA key exchange
- fix method Write(ReadOnlySpan<byte>) in LimitedBuffer
- ASN.1: Limit OID contents to 4096 bytes
- EdDSA: fix verification infinite loop
- EC: restrict m value in F2m curves
---
 crypto/test/src/math/ec/test/ECPointTest.cs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'crypto/test/src/math/ec')

diff --git a/crypto/test/src/math/ec/test/ECPointTest.cs b/crypto/test/src/math/ec/test/ECPointTest.cs
index 7a833a413..a5129f3fb 100644
--- a/crypto/test/src/math/ec/test/ECPointTest.cs
+++ b/crypto/test/src/math/ec/test/ECPointTest.cs
@@ -179,6 +179,26 @@ namespace Org.BouncyCastle.Math.EC.Tests
             }
         }
 
+        [Test]
+        public void TestLargeMInF2m()
+        {
+            int m = 2048;
+            int k1 = 1;
+            BigInteger aTpb = new BigInteger("1000", 2);
+            BigInteger bTpb = new BigInteger("1001", 2);
+            BigInteger n = new BigInteger("23");
+            BigInteger h = new BigInteger("1");
+
+            try
+            {
+                F2mCurve curve = new F2mCurve(m, k1, aTpb, bTpb, n, h);
+            }
+            catch (ArgumentException e)
+            {
+                Assert.AreEqual("F2m m value out of range", e.Message);
+            }
+        }
+
         /**
          * Calls <code>implTestAdd()</code> for <code>Fp</code> and
          * <code>F2m</code>.
-- 
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