SSL Certificates are small data files that digitally bind a cryptographic key to an organization’s details. SSL is an acronym for Secure Sockets Layer. SSL provides a secure connection, allowing you to transmit private data online. Sites secured with SSL display a padlock in the browsers URL and possibly a green address bar if secured by an EV SSL certificate.
Buy SSL From comodo which is low cost and they are provided with high assurance. It features the strongest possible levels of encryption with dedicated customer support and unlimited server licenses.