Secure Sockets Layer (SSL) is used to create an encrypted channel between the web server and web browsers to protect data during transmission over the Internet. SSL Certificates consist of a public key and private key. The public key is used to encrypt information and private key is used to decrypt. When a web browser visits a domain with SSL certificate it provides a level of encryption depending on the type of SSL certificate. For this reason, SSL certificates include multiple levels of encryption. Number of bits.
Certification entities are globally recognized companies (Verisign, Thawte, Geotrust) to authenticate the website or domain before issuing an SSL certificate. The certification seal shows that a site is protected by SSL service and has been authenticated according to strict standards. In the case of Verisign seal also indicates that the website has exceeded a daily scan to detect malicious code.
The SSL certificate recognizes the unique identity of a domain or web server, is like your personal id or passport. The person accesing that secured domain will have the confidence of knowing where is accessing and what person or company is behind it. When a browser connects to a server, the server sends the identifying information. To view the credentials of a website you can click on the padlock that shows the browser and see the credentials of that domain. An SSL certificate show your customers, that your website is safe so they can visit or buy on your website with total confidence.
EV SSL certificates are used to further increase customer confidence with an SSL certificate. Your visitors will known that that your company is legitimate when they see the green address bar in high security browsers. This at first glance does not seem something special according to studies by Verisign customers have experienced a notable increase in the number of transactions completed and a considerable impact on the results, with an average increase of 17.8%.