Browsers with EV support display more information for EV certificates than for previous SSL certificates. Microsoft Internet Explorer 7, Mozilla Firefox 3, Safari 3.2, Opera 9.5, and Google Chrome all provide EV support.
The Extended Validation guidelines require participating Certificate Authorities to assign a specific EV identifier, which is registered with the browser vendors who support EV once the Certificate Authority has completed an independent audit and met other criteria. The browser matches the EV identifier in the SSL certificate with the one it has registered for the CA in question: if they match, and the certificate is verified as current, the SSL certificate receives the enhanced EV display in the browser's user interface. In most implementations, the enhanced display includes:
- The name of the company or entity that owns the certificate.
- The name of the SSL Certificate Authority (CA) that issued the EV certificate.
- A distinctive color, usually green, shown in the address bar to indicate that a valid EV certificate was received.
Read more about this topic: Extended Validation Certificate
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