If you offer services and products on your website and you'd like the payment information that users upload to be secure, you'll 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 vendor will use to issue the certificate. The CSR features your website address, Business name and Unit, mailing address and e-mail of the entity that will use the certificate. The Certificate Authority studies and authorizes the CSR before it gives an SSL certificate which is signed electronically using its private key as an authority. In order to install an SSL, you need an overall of 4 batches of code - the CSR, a Private Key that is made after you generate your Request, the actual certificate plus a specific Certificate Authority code, that's unique for each vendor.