In case you offer services and products on your website and you'd like the payment information that clients send to be protected, you will need an SSL certificate. Secure Sockets Layer is a protocol which encrypts the data exchanged between a user and a web server, but in order to get an SSL, you need a Certificate Signing Request (CSR). This is Base64 encoded data that the SSL service provider will use to create the certificate. The CSR consists of your web address, Business name and Unit, postal address and e-mail of the business which will use the certificate. The Certificate Authority reviews and approves the CSR before it issues an SSL certificate that is signed electronically using its private key as an authority. In order to install an SSL, you will need a total of four batches of code - the CSR, a Private Key that is created when you generate your Request, the actual certificate as well as a special Certificate Authority code, that is unique for every single vendor.