If you offer services and products on your website and you would like the payment details that people submit to be secure, you should use an SSL certificate. Secure Sockets Layer is a protocol which encrypts the information exchanged between a user and a server, but to get an SSL, you'll need a Certificate Signing Request (CSR). This is Base64 encoded data that the SSL supplier will use to create the certificate. The CSR contains the website address, Business name and Unit, postal address and e-mail of the organization which will use the certificate. The Certificate Authority studies and approves the CSR before it issues an SSL certificate which is signed in an electronic format with its private key as an authority. To install an SSL, you'll need an overall of 4 batches of code - the CSR, a Private Key that is made after you generate your Request, the actual certificate along with a specific Certificate Authority code, which is unique for every single vendor.