On Wed, Mar 09, 2011 at 21:57 -0800, you wrote: > I think a universal hash should work here. There's already one in Hash.cc, Good idea! Robin -- Robin Sommer * Phone +1 (510) 722-6541 * robin at icir.org ICSI/LBNL * Fax +1 (510) 666-2956 * www.icir.org