In case you wish to use an SSL Certificate on your site, so as to protect the payment and login info that users upload, you will need a Certificate Signing Request, also known as CSR. The Request contains all the information about the entity which will use the SSL in an encoded form, for example the exact web address for the site, the Business/Organization name, physical and email address. It has to be submitted to a vendor, or Certificate Authority, which reviews the provided info and based on it, issues the SSL certificate. The SSL set up requires four bits of code - the certificate, the CSR, a specific private key which is generated alongside the CSR and the SSL vendor private key. A site that has an SSL installed can be opened with https:// rather than the usual http:// and the information submitted for the CSR will be viewed in standard text format from an Internet browser.