diff --git a/bin/executable_showcert b/bin/executable_showcert
index 229acde..86f3be5 100644
--- a/bin/executable_showcert
+++ b/bin/executable_showcert
@@ -1,5 +1,7 @@
 #!/bin/zsh
 
+[[ -z $1 ]] && { echo "where to get the cert?" >&2; exit 1; }
+
 fetch() {
     if [[ -f $1 ]]
     then
diff --git a/dot_config/nginx/ssl/localhost.crt b/dot_config/nginx/ssl/localhost.crt
index 9194fdf..b906bcc 100644
--- a/dot_config/nginx/ssl/localhost.crt
+++ b/dot_config/nginx/ssl/localhost.crt
@@ -1,31 +1,36 @@
 -----BEGIN CERTIFICATE-----
-MIIFXzCCBEegAwIBAgIIHRxRuB6t75UwDQYJKoZIhvcNAQELBQAwPTELMAkGA1UE
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+Sm9/P3kEzvN0O68Lro7/ZT+RcCyXCNwrU1o7PB/GB9/IwRPVMfGVxA==
 -----END CERTIFICATE-----
diff --git a/dot_config/nginx/ssl/localhost.key b/dot_config/nginx/ssl/localhost.key
index b00c4f7..2443c2b 100644
--- a/dot_config/nginx/ssl/localhost.key
+++ b/dot_config/nginx/ssl/localhost.key
@@ -1,27 +1,28 @@
------BEGIN RSA PRIVATE KEY-----
-MIIEowIBAAKCAQEAyBHD2Gm3N1FswjLIKVqSUoOrsxiKAbIEtJtUUB9tgCMzIcYS
-auJMMuRed8KqPJe9Mg14I2jL9A1J8+SQtiHazKNITAWrjodYeVaSh7semIVt7IFe
-rUcUpuBYXoTxsPb0JNH8ekEZC2Mc8nkx6KaiF9tDdRVuhZQt72QvfsYCkJ35vU8Z
-oBRhylZVzBTvVYN9nWA+8vD+ullgbbUajJC99un0oaZljKBNRnUWM/siwAV8Mehb
-JyxbmzlZO8igJ2MnBLocbMxFzrgVNuHHtMppGl2bJy1E9inZP0+G8M/IBG/VXmLm
-yIpbqWodONRaezYxu+daca5iR6Rz9kV8jr/+3wIDAQABAoIBAAdzqfDAl0NnM/7T
-t2La7cJHBzkne9RuVgCIHI7TbNet9/SVFRCIF0B6Aw7A4GhbWn+nwsbG23nemNeN
-ttohzq16k3HJcEdhwSjb0Z9el9gkeCCr/OPFVv6UMpZqqznlKNjKPXYsQIuNCIH7
-g6Ffu3/Z+dw9jR1KlJ9rAt3c8DGEr9YbRXyWLvf8B+B0i0THjWjqmI6bJNJeZSTI
-nu7G7h/4ZQTSQQs22o+YgVxX9rKPmOFbf13OP3MJ8VfvdeeMeDzCchs8KwOq/tYJ
-vvYJs10Bl75XHKjsmjLpZX165T0zDfXLz8Kf5J1BsoMpbyd6jugCEXbSakZ2Cxwc
-OzNzeBkCgYEA/Ws3iz35nvdFUoe+0owaTepN/ENcxWaLBQsec4KOmKhZfuCA2B2Q
-EkyAk8j9n8pajZyvweU0cLcPX6hJdNXJ+wbegld236Fd7dYWCEmnSMVUTSP+AOHv
-VmJLi1jMvBNvUL54fXVvQ3nshFR41xOFW4+caWIB+ra8iZbHGSMke0sCgYEAyhtw
-2PbaGYndHTmYUUuUX/9rdaJKjol6t8Ljc2YaYdSKRgOBBIXU/+J0xrUaWQ857205
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-T3rI88c2TnIMnTajr9WQUcR9nr5IjOnJwsj7Gj0CgYBjISGlEiUnDcrMMdVvPua7
-O8AtwZv0i9wtqN/Mh3GIPbJkcyVzZH0K62oQZTrw2pL5eiU2T5Zn0PPuk0HItihA
-TbuUeOpDKDg55NjRfR421RnY4w9lAPxCakjqxV2w5FlS2G8BhIJ1fqgKS5DJcRVl
-b5PblT7496pgl95h8uE+aQKBgQCQyMm11Fl39Ch/+DOjAXbgspTj54hrxhcwr5/L
-mriJnv4TnA0AFXP6f9tSQokGhf7mA6QVML0hDT19cKcG/OpEW58fUNK3BVC/mifs
-FROU9zkb1UIl9u1gCmaObWhB7QLqHv/lCjwNT4ga+F8K/QqUO3Uw7odjgkNtF0pf
-jSU9rQKBgD2MASR1vY5ZeYb7LqVLRhOb+0lmXqxrOTiAHD4Z/9xacHREXTqIbIgS
-varoU7PEAWSNM5qULiVGcQS+4W1itjkLpYH5PtS6JPDfNDq+Jck6VnQgEfZ6+QCN
-tH5V1S6bcnx0dDuMhemcMHZMrxLhvNeBNZ2fHE2e7BLbhRFbfpcc
------END RSA PRIVATE KEY-----
+-----BEGIN PRIVATE KEY-----
+MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDKoBbe9YWPmC4J
+iVs/vqygmkVoIGv//0fxBtJ/eGDnpWoi/XeRLZz5UkvGSnuNSrOfY9wwB2pUaawE
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+/2EYtXEn9Eif+cos5IuRY3BtWkplqcoHQZsR/y7GRPRSOZhM/u/nkMsuPwKBgQCe
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+8RS+1JHOUBYQYLbXqziQRFn5
+-----END PRIVATE KEY-----