If you offer services and products on your site and you would like the payment details that users send to be protected, you need an SSL certificate. Secure Sockets Layer is a protocol which encrypts the data exchanged between a user and a server, but in order to acquire an SSL, you will need a Certificate Signing Request (CSR). This is Base64 encoded information that the SSL service provider will use to create the certificate. The CSR features your web address, Business name and Unit, mailing address and e-mail of the entity that will use the certificate. The Certificate Authority studies and approves the CSR before it gives an SSL certificate that is signed digitally using 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 made once you generate your Request, the actual certificate along with a special Certificate Authority code, that's unique for each vendor.