From 888be6133ccff1476cba139f1988c575e19d4561 Mon Sep 17 00:00:00 2001
From: Christopher Moore <chrisdcmoore@live.com>
Date: Sat, 9 Jan 2016 13:45:23 +0000
Subject: [PATCH] KEx availability depends on OpenSSL support

---
 lib/net/ssh/transport/kex.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/net/ssh/transport/kex.rb b/lib/net/ssh/transport/kex.rb
index 6f612d1112..6fca89c62d 100644
--- a/lib/net/ssh/transport/kex.rb
+++ b/lib/net/ssh/transport/kex.rb
@@ -10,7 +10,9 @@ module Net::SSH::Transport
     MAP = {
       'diffie-hellman-group-exchange-sha1'   => DiffieHellmanGroupExchangeSHA1,
       'diffie-hellman-group1-sha1'           => DiffieHellmanGroup1SHA1,
-      'diffie-hellman-group-exchange-sha256' => DiffieHellmanGroupExchangeSHA256
     }
+    if defined?(DiffieHellmanGroupExchangeSHA256)
+      MAP['diffie-hellman-group-exchange-sha256'] = DiffieHellmanGroupExchangeSHA256
+    end
   end
 end