In case you offer services and goods on your website and you would like the payment details that clients submit to be protected, you will need an SSL certificate. Secure Sockets Layer is a protocol that encrypts the data exchanged between a user and a server, but to acquire 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 contains your website address, Business name and Unit, mailing address and e-mail of the entity which will use the certificate. The Certificate Authority evaluates and authorizes the CSR before it gives an SSL certificate that is signed digitally with its private key as an authority. To be able to install an SSL, you'll need a total of four batches of code - the CSR, a Private Key that is made once you generate the Request, the actual certificate plus a special Certificate Authority code, which is unique for each and every vendor.