-# Add rsa key if available
-#XXX: dsa is unsupported anymore
-if [ -e "$HOME/.ssh/id_rsa.pub" ]; then
- [ ! -d "$PWD/root/root/.ssh" ] && mkdir -m 0700 "$PWD/root/root/.ssh"
- cp -f "$HOME/.ssh/id_rsa.pub" "$PWD/root/root/.ssh/authorized_keys"
+# Prevent btmp warning
+cat << EOF > "$PWD/root/etc/tmpfiles.d/var.conf"
+# See tmpfiles.d(5) for details
+
+# Prevent msec warning about enforcing permissions
+f /var/log/btmp 0600 root utmp -
+EOF
+
+# Authorized keys
+if [ -e "$HOME/.ssh/id_rsa.pub" -o -e "$HOME/.ssh/id_ed25519.pub" ]; then
+ mkdir -m 0700 "$PWD/root/root/.ssh"
+ touch "$PWD/root/root/.ssh/authorized_keys"
+ chmod u=rw,go=r "$PWD/root/root/.ssh/authorized_keys"
+
+ # Add rsa key if available
+ if [ -e "$HOME/.ssh/id_rsa.pub" ]; then
+ cat "$HOME/.ssh/id_rsa.pub" >> "$PWD/root/root/.ssh/authorized_keys"
+ fi
+
+ # Add ed25519 key if available
+ if [ -e "$HOME/.ssh/id_ed25519.pub" ]; then
+ cat "$HOME/.ssh/id_ed25519.pub" >> "$PWD/root/root/.ssh/authorized_keys"
+ fi