From c754531690dccd54a59ec50db02f17991c66fd1a Mon Sep 17 00:00:00 2001
From: Kenny Root <kenny@the-b.org>
Date: Fri, 20 Feb 2026 11:39:42 +0800
Subject: [PATCH] Guard for older versions of Android

X25519 was not a good test to determine if Android has support for
X25519 that indicates platform support. We also need to check whether
XECPrivateKey is needed.
---
 .../java/com/trilead/ssh2/crypto/dh/X25519ProviderFactory.java   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/com/trilead/ssh2/crypto/dh/X25519ProviderFactory.java b/src/main/java/com/trilead/ssh2/crypto/dh/X25519ProviderFactory.java
index 2ffe61dc..51d7e52d 100644
--- a/src/main/java/com/trilead/ssh2/crypto/dh/X25519ProviderFactory.java
+++ b/src/main/java/com/trilead/ssh2/crypto/dh/X25519ProviderFactory.java
@@ -46,6 +46,7 @@ public class X25519ProviderFactory {
 	private static boolean isPlatformNativeAvailable() {
 		try {
 			KeyPairGenerator.getInstance("X25519");
+			Class.forName("java.security.spec.XECPrivateKeySpec");
 			return true;
 		} catch (Exception e) {
 			return false;