How to generate CSR file
You can generate CSR using OpenSSL: openssl req -newkey rsa:2048 -keyout private_key.pem -out server.csr where req is a command to control x.509 certificates, -newkey — means “we need a new key” _rsa_ — hashing algorythm, and 2048 — the length of a key. To sign certificates after 2010 you need at least this length! Until 2010 it was possible to use 1024 bit key. -keyout — path to the file on the server ...