diff --git a/modules/system/ca.pub b/modules/system/ca.pub
index e1ef1197..4dec002e 100644
--- a/modules/system/ca.pub
+++ b/modules/system/ca.pub
@@ -1 +1 @@
-ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDV9egbTbIbVCV4TNr6IgvXw7fMEK4v/WKAHddkX4uvysL7l+H1cLM0TRDvGefUFoU7eYcEIRV9lwvjMo/xy0GKao76fylQ03gkrzTiPvztThpAfKKOIniXvzWoIP7/fzNwuW6GgUiM4JKvgJEieRTybclLRgauy2gqiwVZMAFksxG1fAPYGXIrhtVQ+WjN+0IIiayNlj1J6tJ9fQWc+BkNsoJJZBADf+qjTsqsVHjcABoo2vYRTYnSVzrsnjSu6ivGjSY0ImG+ASPqyluA7eSXe4XQkyxjuyBVTwwqTpZ0Y+DMESr/Fd5rQ3N/iylLcUVGexl7gHHFtJGiERloG8Bv Public key for Digital Signature
+cert-authority,principals="chn" ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDV9egbTbIbVCV4TNr6IgvXw7fMEK4v/WKAHddkX4uvysL7l+H1cLM0TRDvGefUFoU7eYcEIRV9lwvjMo/xy0GKao76fylQ03gkrzTiPvztThpAfKKOIniXvzWoIP7/fzNwuW6GgUiM4JKvgJEieRTybclLRgauy2gqiwVZMAFksxG1fAPYGXIrhtVQ+WjN+0IIiayNlj1J6tJ9fQWc+BkNsoJJZBADf+qjTsqsVHjcABoo2vYRTYnSVzrsnjSu6ivGjSY0ImG+ASPqyluA7eSXe4XQkyxjuyBVTwwqTpZ0Y+DMESr/Fd5rQ3N/iylLcUVGexl7gHHFtJGiERloG8Bv Public key for Digital Signature