[Wine] get unique code identifier for computer (license key calc)

[aleroot]

I've developed a windows application, that on windows get the hard disk number for generating a code number, with this number i've a keygen that generate a validation key for activate the program.

This application runned on wine return always the same code because the hard disk number is the same for wine.

How can i generate a valide unique code for the computer where application run under wine ?

Is there a way to calculate a per-machine unique number ?

Thanks.