In case you offer products and services on your website and you'd like the payment details that customers send to be protected, you need an SSL certificate. Secure Sockets Layer is a protocol which encrypts the info exchanged between a user and a server, but to get an SSL, you need a Certificate Signing Request (CSR). This is Base64 encoded data that the SSL vendor will use to issue the certificate. The CSR consists of the website address, Business name and Unit, postal address and e-mail of the entity that will use the certificate. The Certificate Authority evaluates and authorizes the CSR before it provides an SSL certificate that is signed in an electronic format with its private key as an authority. To be able to set up an SSL, you'll need an overall of 4 batches of code - the CSR, a Private Key that is created after you generate your Request, the actual certificate and a special Certificate Authority code, which is unique for each and every vendor.