In case you offer services and goods on your website and you'd like the payment data that users submit to be protected, you'll need an SSL certificate. Secure Sockets Layer is a protocol that encrypts the data exchanged between a user and a web server, but in order to receive an SSL, you need a Certificate Signing Request (CSR). This is Base64 encoded information that the SSL vendor will use to create the certificate. The CSR consists of the web address, Business name and Unit, postal address and e-mail of the entity which will use the certificate. The Certificate Authority reviews and authorizes the CSR before it gives an SSL certificate that is signed electronically with its private key as an authority. In order to install an SSL, you'll need a total of 4 batches of code - the CSR, a Private Key that is created when you generate the Request, the actual certificate as well as a specific Certificate Authority code, that's unique for each and every vendor.