openssl req -newkey rsa:2048 -nodes -keyout my_domain.key -out my_domain.csr Writing new private key to 'my_domain.key' ----- 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]:BD State or Province Name (full name) [Some-State]:your_city Locality Name (eg, city) []:your_city Organization Name (eg, company) [Internet Widgits Pty Ltd]:your_org_name Organizational Unit Name (eg, section) []:your_org_dept_name Common Name (e.g. server FQDN or YOUR name) []:my_domain.com Email Address []:your_email Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []:strong_pass An optional company name []:second_org_name