Organizations that do not have existing CA infrastructure can obtain a CA private key and certificate through a well-known, external service, such as VeriSign™, or execute the following procedure to generate their own CA private key and certificate.
#openssl req -x509 -days 365 -newkey rsa:1024 -keyout /tmp/root_key.pem -out /tmp/root_req.pem
Generating a 1024 bit RSA private key
writing new private key to '/tmp/root_key.pem'
Enter PEM pass phrase:Trend
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) [GB]:DE
State or Province Name (full name) [Berkshire]:Bavaria
Locality Name (eg, city) [Newbury]:Munich
Organization Name (eg, company) [My Company Ltd]: Trend Micro
Organizational Unit Name (eg, section) :Global Training
Common Name (eg, your name or your server's host name) :EF
Email Address :email@example.com
After the completion of this procedure, the /tmp/root_key.pem file contains the private key encrypted with the “Trend” password. The /tmp/root_key.pem file contains the self-signed certificate that must be distributed to all clients and servers. Both are stored in the PEM-format.
The Organization (O) field for the CA and key owners must be the same.
After obtaining a CA private key and certificate:
Deploy the CA certificate on all servers.
Have all certificates issued in your organization signed by the CA.