Possible to change encryption used in vB?

[MaXeL3G3ND]

Hello there,

Today i was wondering, is it possible to change the encryption used in vBulletin,
to f.ex. lets say whirlpool instead? I also wonder how much work would be needed?

I don't want to hear about converting the passwords that are already stored,
i only want to know how hard it is possible to change the encryption used?

An example of a strong algorithm which works in PHP5 atleast: (havent tried in PHP4)

PHP Code:

echo hash( 'whirlpool', 'test' ); 


Which spits out test as a 512-bit whirlpool encryption.

Now i just wonder if anyone could guide me just a tiny but in what has to be done?

Cause i can already guess the commands are different if i'm going to try whirlpool.


Thank you for your time.

PS: I wondered which section to put it in, but due to it's about php programming
i thought this section would fit the best.

PPS: Yes i already know html, css, and some php already though i don't do advanced stuff.