From 91e05655f6b6b1b3ca02f233620800b23b398d6a Mon Sep 17 00:00:00 2001
From: Sunny Chung <sunnychung@live.hk>
Date: Tue, 19 Dec 2023 23:58:24 +0800
Subject: [PATCH] update documentation

---
 doc/features/ssl-configuration.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/features/ssl-configuration.md b/doc/features/ssl-configuration.md
index ba597119..f98176cb 100644
--- a/doc/features/ssl-configuration.md
+++ b/doc/features/ssl-configuration.md
@@ -48,6 +48,17 @@ Accepted formats for a private key are:
 - Unencrypted PKCS #8 DER
 - Password-encrypted PKCS #8 DER
 
+An unencrypted PKCS #8 DER key file can be converted from a PEM file using OpenSSL.
+```
+openssl pkcs8 -topk8 -in clientKey.pem -out clientKey.pkcs8.der -outform DER -nocrypt
+```
+
+A password-encrypted PKCS #8 DER key file can be converted from a PEM file using OpenSSL.
+```
+openssl pkcs8 -topk8 -in clientKey.pem -out clientKey.pkcs8.encrypted.der -outform DER
+```
+
+
 ## Disable SSL Verification
 
 SSL certificate verification can be disabled. By default, SSL verification is enabled.