mdw@git.distorted.org.uk Git - catacomb-python/blob - t/t-share.py

   1 ### -*-python-*-
   2 ###
   3 ### Testing (some) passsword management functionality
   4 ###
   5 ### (c) 2019 Straylight/Edgeware
   6 ###
   7
   8 ###----- Licensing notice ---------------------------------------------------
   9 ###
  10 ### This file is part of the Python interface to Catacomb.
  11 ###
  12 ### Catacomb/Python is free software: you can redistribute it and/or
  13 ### modify it under the terms of the GNU General Public License as
  14 ### published by the Free Software Foundation; either version 2 of the
  15 ### License, or (at your option) any later version.
  16 ###
  17 ### Catacomb/Python is distributed in the hope that it will be useful, but
  18 ### WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 ### General Public License for more details.
  21 ###
  22 ### You should have received a copy of the GNU General Public License
  23 ### along with Catacomb/Python.  If not, write to the Free Software
  24 ### Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  25 ### USA.
  26
  27 ###--------------------------------------------------------------------------
  28 ### Imported modules.
  29
  30 import catacomb as C
  31 import unittest as U
  32 import testutils as T
  33
  34 ###--------------------------------------------------------------------------
  35 class TestShare (U.TestCase):
  36
  37   def check_share(me, splitcls, splitargs, joincls, joinargs, secret):
  38
  39     split = splitcls(3, secret, *splitargs)
  40     me.assertEqual(split.threshold, 3)
  41     shares = [split.get(i) for i in T.range(5)]
  42
  43     join = joincls(3, *joinargs)
  44     me.assertEqual(join.threshold, 3)
  45     me.assertFalse(join.addedp(1))
  46     me.assertEqual(join.remain, 3)
  47     join.add(1, shares[1])
  48     me.assertTrue(join.addedp(1))
  49     me.assertEqual(join.remain, 2)
  50     me.assertRaises(ValueError, join.combine)
  51     join.add(0, shares[0])
  52     join.add(3, shares[3])
  53     me.assertEqual(join.remain, 0)
  54     me.assertEqual(join.combine(), secret)
  55
  56   def test_share(me):
  57     rng = T.detrand("share")
  58     p = C.MP(2)**127 - 1
  59     me.check_share(C.ShareSplit, [p, rng], C.ShareJoin, [p], rng.range(p))
  60
  61   def test_gfshare(me):
  62     rng = T.detrand("gfshare")
  63     me.check_share(C.GFShareSplit, [rng], C.GFShareJoin, [123],
  64                    rng.block(123))
  65
  66 ###----- That's all, folks --------------------------------------------------
  67
  68 if __name__ == "__main__": U.main()