[www-jigsaw] pkcs11 on Jigsaw

I tried to implement the use of Jigsaw server with USB token.

It seems to work, even because the usb token started to flash, but the error 
is that it cannot find any certificate on the usb token

HOW CAN I generate a certificate (and a key pair ) directly on the token, 
that Jigsaw can accept ?

thanks
Lapo