add 'Object Identifiers'

trimstray · trimstray · commit beb3655ecdfc · 2021-08-18T13:17:48.000+02:00
- signed-off-by: trimstray &lt;trimstray@gmail.com&gt;
diff --git a/doc/HELPERS.md b/doc/HELPERS.md
@@ -7657,6 +7657,7 @@ For more information please look at these great explanations:
 - [Generate a multi domains certificate using config files](https://gist.github.com/romainnorberg/464758a6620228b977212a3cf20c3e08)
 - [Your OpenSSL CSR command is out of date](https://expeditedsecurity.com/blog/openssl-csr-command/)
 - [OpenSSL example configuration file](https://www.tbs-certificats.com/openssl-dem-server-cert.cnf)
+- [Object Identifiers (OIDs)](https://www.alvestrand.no/objectid/)
 
 ###### List available EC curves
 
