In case you offer services and goods on your site and you'd like the payment info that people upload to be protected, you will need an SSL certificate. Secure Sockets Layer is a protocol that encodes the data exchanged between a user and a web server, but to receive an SSL, you'll need a Certificate Signing Request (CSR). This is Base64 encoded info that the SSL supplier will use to issue the certificate. The CSR consists of the website address, Business name and Unit, mailing address and email of the organization which will use the certificate. The Certificate Authority reviews and approves the CSR before it issues an SSL certificate that is signed in an electronic format with its private key as an authority. To set up an SSL, you need an overall of 4 batches of code - the CSR, a Private Key that is made once you generate the Request, the actual certificate along with a specific Certificate Authority code, that is unique for every single vendor.