What is the encryption strength of GeoTrust certificates?
All GeoTrust SSL certificates now support up to 256-bit encryption. That means that if the user’s browser supports 256 and your web server supports 256, the SSL session will be 256. If 256 is not supported by both the browser and the server, the SSL session steps down to 128. Mozilla’s Firefox web browser now supports 256 and others, such as Microsoft, are likely to follow. Going forward the shift will be from 128 to 256.