What is SSL certificate encryption
SSL Encryption strength is a measure number of bits in the key used to encrypt data during an SSL session when the trust connection start.
The bigger the number, the longer it takes for computer(s) to decrypt enciphered data.
The strength of encryption on SSL depends only on the web-browser and the web-server it requests the connection to.
Most of SSL certificates now support up to 256-bit encryption. meaning 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 goes down to 128.
For example, Google Chrome browser supports up to 256-bit encryption and will match the level of encryption of website uses. Going forward the shift will be from 128 to 256.