From 3f47e668359c6afda6807be86e2bf93596611126 Mon Sep 17 00:00:00 2001
From: Jeremy Norris <jeremy.norris@localbackhaul.com>
Date: Wed, 8 Sep 2021 14:54:38 -0500
Subject: [PATCH] Fix bug where ext-info-c was incorrectly advertised during
 rekeying.

According to RFC 8308 section 2.1, ext-info-c should only advertised during the first key exchange.
---
 src/main/java/com/jcraft/jsch/Session.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/com/jcraft/jsch/Session.java b/src/main/java/com/jcraft/jsch/Session.java
index 80d807a7..205d70d9 100644
--- a/src/main/java/com/jcraft/jsch/Session.java
+++ b/src/main/java/com/jcraft/jsch/Session.java
@@ -701,7 +701,7 @@ private void send_kexinit() throws Exception {
     }
 
     String enable_server_sig_algs=getConfig("enable_server_sig_algs");
-    if(enable_server_sig_algs.equals("yes")){
+    if(enable_server_sig_algs.equals("yes") && !isAuthed){
       kex+=",ext-info-c";
     }