From 8256685f8692dc99e4cca8575b4da68cf80799a3 Mon Sep 17 00:00:00 2001
From: Kurt H Maier <khm@pnnl.gov>
Date: Fri, 25 Mar 2022 10:24:44 -0700
Subject: [PATCH] xcatconfig:  add ed25519 host key support

---
 xCAT-server/sbin/xcatconfig | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/xCAT-server/sbin/xcatconfig b/xCAT-server/sbin/xcatconfig
index f1b1c2a71..1d0b5877b 100755
--- a/xCAT-server/sbin/xcatconfig
+++ b/xCAT-server/sbin/xcatconfig
@@ -1011,6 +1011,21 @@ sub genSSHNodeHostKey
 	else{
             push @sshkeylist,"/etc/xcat/hostkeys/ssh_host_ecdsa_key";
 	}
+
+    # see if this system supports the ed25519
+    xCAT::Utils->runcmd('rm -rf /tmp/ed25519_key >/dev/null 2>&1 ; /usr/bin/ssh-keygen -t ed25519 -f /tmp/ed25519_key  -P "" &>/dev/null', 0);
+    if ($::RUNCMD_RC == 0) {
+        xCAT::MsgUtils->message('I', "Generating SSH2 ed25519 Key...");
+        $cmd =
+"/usr/bin/ssh-keygen -t ed25519 -f /etc/xcat/hostkeys/ssh_host_ed25519_key -C '' -N ''";
+        $outref = xCAT::Utils->runcmd("$cmd", 0);
+        if ($::RUNCMD_RC != 0)
+        {
+            xCAT::MsgUtils->message('E', "Could not generate SSH2 ed25519 key.");
+        }
+	else{
+            push @sshkeylist,"/etc/xcat/hostkeys/ssh_host_ed25519_key";
+	}
     }
 
     if(@sshkeylist){