#!/usr/bin/env python

 #

 # data_tools - Various tools to manipulate data

 #

 # Copyright 2007 Sam Hart

 #

 # This program is free software; you can redistribute it and/or modify

 # it under the terms of the GNU General Public License as published by

 # the Free Software Foundation; either version 2 of the License, or

 # (at your option) any later version.

 #

 # This program is distributed in the hope that it will be useful,

 # but WITHOUT ANY WARRANTY; without even the implied warranty of

 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 # GNU General Public License for more details.

 #

 # You should have received a copy of the GNU General Public License

 # along with this program; if not, write to the Free Software

 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 #

 # Author: Sam Hart

 """

 Swarm utility functions

 A collection of utility functions used by Swarm

 """

 import sha

 def get_hash(str1, str2, str3):

     """

     get_unique_hash(str1, str2, str3):

     Given three strings, will return a unique hex hash

     """

     h = sha.new(str1)

     h.update(str2)

     h.update(str3)

     return h.hexdigest()