From 25c4d02ed2ff20c5731bb3121dc8ae4a5b490527 Mon Sep 17 00:00:00 2001
From: Nikita Vilunov <nikita@vilunov.me>
Date: Mon, 6 Mar 2023 19:52:53 +0100
Subject: [PATCH] small certificates tip

---
 docs/cheatsheet.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/cheatsheet.md b/docs/cheatsheet.md
index b7b3855..03c1de7 100644
--- a/docs/cheatsheet.md
+++ b/docs/cheatsheet.md
@@ -18,3 +18,8 @@ Print content of a TLS certificate:
 
     openssl x509 -in certs/xmpp.pem -text
 
+Make sure `xmpp.key` starts and ends with:
+```
+-----BEGIN RSA PRIVATE KEY-----
+-----END RSA PRIVATE KEY-----
+```