[Zope] Unique IDs

Hi, What's the best way to generate a secure unique ID in Zope? I've tried generating a random integer then md5'ing it, but trying to do an md5.new() causes Zope to prompt for authentication. I'm running this as a user who's an out-of-the-box Manager - what other permission is needed? Or is there a better way of doing it? Cheers, Dan _________________________________________________________________ Daniel Fairs | daniel.fairs@spiderplant.net | www.spiderplant.net