SSL is the abbreviated form of secure socket layer. The SSL certificate has two main functions, namely identity verification and data encryption. The SSL certificate can verify the identity of an individual, an enterprise or a website. When your user visits the website, he can click on the security stamp on the page to know the specific information of your website. Among all types of certificates, the verification of EV SSL is the strictest so it is the most trustworthy certificate. The other important function of SSL certificate is encryption, which means that it can protect the personal information on your website and ensure that this information is not intercepted by outsiders.

The CA is the abbreviated form of certificate authority. As a neutral organization, the CA provides encryption for information transmission and verifies website and enterprise identity. Not all companies can be called CAs. At present, authoritative CA companies mainly include Digicert, Entrust, Comodo, Geotrust, Symantec, etc.Digicert, Entrust, Comodo, Geotrust, Symantec等。

SSL certificate is a standard of network security, which can protect website users information security while verifying website identity. An SSL certificate is indispensable for a shopping website. The SSL certificate encrypts the datum transmitted between the computer and the web server to protect the sensitive information of the visitors, such as name, address, password or credit card number. A website with an SSL certificate must be authenticated, so there is no possibility to be a phishing website. For users, an SSL certificate of website is a filter to identify whether it is safe or not.

In addition, the browser will prompt security for websites with SSL certificates, and users can see that the address bar starts with "https://" and is marked with a lock icon.

Three Types of SSL Certificates

IV SSL：IV (Individual Validation) SSL is a type of SSL certificate verifying the individual identity of a website manager. It can encrypt the confidential information of a website and verify the real identity of a website. It is not verified by CA, so the level of such certificates is lower.

DV SSL:(Domain Validation) SSL is only verified the ownership of the website’s domain by CA. It only encrypts the confidential information of a website, rather than verifies the real identity of a website. So, it is an entry level certificate and the verification process is very simple and completed in a matter of minutes.

Comprehensive Validation (OV, EV) SSL:This type of SSL certificate includes OV and EV SSL certificate that not only verifies the real identity of the website, but also encrypts the confidential information. It is the best guarantee for network security and the highest level among all certificates.

Wherever you want to transmit information securely, you need to deploy an SSL certificate. For example: SSL certificate can ensure that users visit your website safely; ensure the communication security of your company's internal website; make sure the safe sending of email; ensure the information security of inside and outside the server; ensure that the information obtained and sent through mobile devices is safe.