[Samba] SAMBA + open LDAP + password hashing

[Alberto Aldrigo | Ca' Tron RE]

Hi everybody,

I'm running an Ubuntu server as fileserver for Osx clients using 
netatalk and now I need to add support to samba for windows clients.

Every user has an account on  open LDAP user base and every account has 
a password stored using SSHA hashing.
I would like to know if I can use the same user base with samba and how 
to configure it to use ssha instead of NT/LM or if there is an alternative.

Thanks
Bye

*Alberto*