If you offer goods and services on your site and you'd like the payment data that customers send to be risk-free, you need an SSL certificate. Secure Sockets Layer is a protocol that encodes the data exchanged between a user and a web server, but to get an SSL, you will need a Certificate Signing Request (CSR). This is Base64 encoded info that the SSL service provider will use to create the certificate. The CSR contains your web address, Business name and Unit, postal 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 which is signed in an electronic format with its private key as an authority. To install an SSL, you'll need a total of four batches of code - the CSR, a Private Key that is made when you generate the Request, the actual certificate as well as a special Certificate Authority code, that is unique for every single vendor.