In case you offer services and products on your website and you would like the payment information that clients submit to be secure, you will need an SSL certificate. Secure Sockets Layer is a protocol that encodes the information exchanged between a user and a server, but to receive an SSL, you need a Certificate Signing Request (CSR). This is Base64 encoded info that the SSL supplier will use to create the certificate. The CSR consists of your website address, Business name and Unit, postal address and e-mail of the business that will use the certificate. The Certificate Authority evaluates and approves the CSR before it gives an SSL certificate that is signed electronically with its private key as an authority. In order to set up an SSL, you need an overall of 4 batches of code - the CSR, a Private Key that is created once you generate the Request, the actual certificate along with a special Certificate Authority code, that's unique for each vendor.