In order to get an SSL certificate and key (for use by an httpd server, for example), you must first create a Certificate Signing Request (CSR). Here is a typical OpenSSL command and the resulting interactive session:
> openssl req -new -newkey rsa:2048 -keyout NAMEOFHOST.pem -nodes -out NAMEOFHOST.csr
If you already have an existing key and you simply need to generate a new csr you can use the following command:
> openssl req -new -key FILENAME -out NAMEOFSERVER.csr
You will then be asked to provide a few bits of information. The values you will have to enter are in bold below:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter ".", the field will be left blank.
-----
Country Name (2 letter code) [AU]:US
State or Province Name (full name) [Some-State]:Nebraska
Locality Name (eg, city) []:Omaha
Organization Name (eg, company) [Internet Widgets Pty Ltd]:Creighton University
Organizational Unit Name (eg, section) []:Your Department Name eg: DoIT
Common Name (eg, YOUR name) []: server name eg: people.creighton.edu
Email Address []:
Please enter the following "extra" attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
You can then view the contents of NAMEOFHOST.csr using a standard text editor. You will need to copy and paste everything including the -----BEGIN CERTIFICATE REQUEST----- and -----END CERTIFICATE REQUEST----- into the request form for a new certificate.